Purlins for different spans

AncillaryItems

Ancillary Items47 Sheeting Posts48 Wind Bracing49 Lightweight Access Walkways50 Services Supports

51 Suspended Ceiling Supports52 Cleats Standard Zed & C-Section53 Sheeting Post Cleats/Side Rail Closers

Side RailSystems

Roof Systems

Eaves Beams

Properties & Applications

Load Tables

Contents

8 Zed Profile Purlin Jointing Arrangements9 Zed Butt Purlin System Layout & Detailing

10-11 Zed Sleeved Purlin System2 Bays and Over - Layout & Detailing

12-13 Heavy End Bay Sleeved Purlin System5 Bays and Over - Layout & Detailing

14 Anti-Sag Rods & Eaves Braces15 Long Roof Slopes, Length > 20m16 Roof Variations17 Tiled Roofs Pitched & Mansard Roofs18 Cantilever Details19 Cleader Angles & Rafter Stays

20 Eaves Beams Dimensions & Properties21 Eaves Beams Fixing Details22 Eaves Beams Gutter Details23 Column Ties

24 C-Section and Zed Side Rail SystemJointing Arrangements

25 C-Section Butt Side Rail System26-27 C-Section Sleeved Side Rail System28-29 C-Section Double Span Side Rail System30-31 Zed Sleeved Side Rail System

32 Zed Butt Side Rail System33 Vertical Cladding Restraint Requirements

34-35 Vertical Cladding Restraint Fixing Details35 Side Rail Supports

36 Horizontal Cladding Arrangements & Restraints37 Horizontal Cladding Panel Support Details38 Horizontal Cladding Alignment

39-41 Horizontal Cladding Panel Joint Rail Options42 Horizontal Cladding Arrangements & Restraints43 Parapet posts44 Window Trimmers45 Doors Posts46 Firewall Restraint System Details

Side Rail Systems

Properties and Applications

Roof Systems

2 Introduction3 Contents4 Zed Section Dimensions & Properties

5 C-Section Dimensions & Properties6-7 Component Applications75 Accreditation and Software

Load Tables54 Introduction To Load Tables

54-57 Zed Purlin Sleeved System - 2 Bays and Over58-62 Zed Purlin Heavy End Bay System

- 5 Bays and Over63-64 Zed Purlin Butt System65-68 Zed & C-Section Sleeved Side Rail System

69-71 Zed & C-Section Butt Side Rail System72 C-Section Wall Restraint Single Span

& Double Span73 Eaves Beams74 Component Weights

Eaves Beams

2-7

8-19

20-23

24-46

47-53

54-74

2The Metsec Building Shell SolutionI Market leading MetSPEC computer design software.

I Total compatibility of Zed and C-Section ranges.

I Profile heights from 142mm to 342mm and thicknessesfrom 1.3mm to 3.2mm.

I Full range of accessories.

I Drawing office data checks.

I Direct data transfer to rolling lines.

I Computer marking of sections.

I Bar code labelling.

I Quality assured to BS EN ISO 9002:1994.

I Pre-hot dipped galvanized steel, G275 coating,guaranteed yield strength, 390 N/mm2.

Investing in Quality and ServiceBuilding on our reputation as market leaders in the production of clean,

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tolerance sections.

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Metsecs vast experience in Electronic Data Interchange hasestablished us as leaders in the field. Data from Metsecs owndetailing software MetCAM or from specialist 3D draughting systemscan simply be e-mailed to the Metsec Drawing Office for direct issueto production.Metsec EDI means the benefits include reduced time in producingand transferring details. Also, by eliminating a potential source oferrors, improved efficiency and greater customer satisfaction isachieved.

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StruCAD: 01332-545800X-Steel: 0113-3071200

SECTION Lt Lb E FDepth mm mm mm mm mm

142-262 19 21 44 42

302-342 20 22 55 52

The Section reference of a Zed Profile 342mm deepand 3.2mm thick = 342 Z 32 The first 3 digits ofthe section reference indicate the depth of the sectionin millimetres (ie 342 equals 342mm deep).The fourth digit is a letter that signifies the profiletype (ie Z for Zed Profile). The last two digits indicatethe material thickness (ie 32 equals 3.2mm).

SLEEVES

The sleeve reference is the same as the Purlin it isbeing used in conjunction with, except that it isprefixed with an S for a standard sleeve and HSfor a heavy end bay sleeve ie PS 342 Z 32 - Standard 342 Z 32 sleeve.

HEBS 342 Z 32 - Heavy End Bay 342 Z 32 sleeve.

Zed Section Dimensions and Properties

Zed

Sect

ion

Dim

ensi

ons

and

Prop

ertie

s

NOMINAL DIMENSIONSSECTION WEIGHT AREA DEPTH TOP BOTTOM t

REFERENCE kg/m cm2 mm FLANGE FLANGE mm142 Z 13 2.94 3.75 142 60 55 1.3142 Z 14 3.16 4.03 142 60 55 1.4142 Z 15 3.38 4.31 142 60 55 1.5142 Z 16 3.60 4.58 142 60 55 1.6142 Z 18 4.03 5.13 142 60 55 1.8142 Z 20 4.46 5.68 142 60 55 2.0172 Z 13 3.35 4.27 172 65 60 1.3172 Z 14 3.60 4.59 172 65 60 1.4172 Z 15 3.85 4.91 172 65 60 1.5172 Z 16 4.10 5.22 172 65 60 1.6172 Z 18 4.59 5.85 172 65 60 1.8172 Z 20 5.08 6.48 172 65 60 2.0172 Z 23 5.81 7.40 172 65 60 2.3172 Z 25 6.29 8.01 172 65 60 2.5202 Z 14 3.93 5.01 202 65 60 1.4202 Z 15 4.21 5.36 202 65 60 1.5202 Z 16 4.48 5.70 202 65 60 1.6202 Z 18 5.02 6.39 202 65 60 1.8202 Z 20 5.56 7.08 202 65 60 2.0202 Z 23 6.35 8.09 202 65 60 2.3202 Z 25 6.88 8.76 202 65 60 2.5232 Z 15 4.79 6.11 232 76 69 1.5232 Z 16 5.11 6.50 232 76 69 1.6232 Z 18 5.73 7.29 232 76 69 1.8232 Z 20 6.34 8.08 232 76 69 2.0232 Z 23 7.26 9.24 232 76 69 2.3232 Z 25 7.86 10.01 232 76 69 2.5262 Z 16 5.57 7.10 262 80 72 1.6262 Z 18 6.25 7.96 262 80 72 1.8262 Z 20 6.92 8.82 262 80 72 2.0262 Z 23 7.92 10.09 262 80 72 2.3262 Z 25 8.59 10.94 262 80 72 2.5262 Z 29 9.90 12.61 262 80 72 2.9302 Z 20 7.89 10.06 302 90 82 2.0302 Z 23 9.04 11.52 302 90 82 2.3302 Z 25 9.80 12.49 302 90 82 2.5302 Z 29 11.31 14.41 302 90 82 2.9342 Z 23 10.13 12.90 342 100 92 2.3342 Z 25 10.98 13.99 342 100 92 2.5342 Z 29 12.68 16.15 342 100 92 2.9342 Z 32 13.94 17.76 342 100 92 3.2

t

X X Depth

TOP FLANGE

Cy

YCx

Lt

Lb

Y

E

F

4

SECTION PROPERTIESIxx Iyy Zxx Zyy rxx ryy Cx Cy Mc,x Mc,ycm4 cm4 cm3 cm3 cm cm cm cm kNm kNm

121.1 31.3 16.86 5.36 5.65 2.87 7.19 5.53 5.55 2.09130.1 33.5 18.10 5.74 5.65 2.87 7.19 5.52 6.26 2.24138.9 35.7 19.34 6.12 5.64 2.86 7.19 5.52 6.97 2.39147.8 37.9 20.56 6.49 5.64 2.85 7.19 5.51 7.68 2.53165.2 42.1 23.00 7.24 5.63 2.84 7.19 5.50 9.03 2.82182.5 46.2 25.40 7.96 5.62 2.83 7.19 5.49 10.31 3.10198.7 38.7 22.87 6.10 6.79 3.00 8.69 6.02 6.98 2.38213.4 41.5 24.57 6.54 6.78 2.99 8.69 6.01 7.90 2.55228.1 44.2 26.25 6.97 6.78 2.98 8.69 6.01 8.85 2.72242.7 46.9 27.93 7.40 6.77 2.98 8.69 6.00 9.79 2.89271.6 52.2 31.26 8.25 6.76 2.97 8.69 5.99 11.63 3.22300.2 57.4 34.55 9.09 6.75 2.95 8.69 5.98 13.40 3.54342.5 64.9 39.42 10.30 6.74 2.93 8.69 5.97 15.90 4.02370.4 69.8 42.63 11.10 6.73 2.92 8.69 5.96 17.50 4.33310.8 41.5 30.49 6.53 7.84 2.86 10.19 6.01 9.41 2.55332.2 44.2 32.59 6.97 7.83 2.86 10.19 6.00 10.55 2.72353.5 46.9 34.68 7.40 7.83 2.85 10.19 6.00 11.69 2.88395.8 52.2 38.83 8.25 7.82 2.84 10.19 5.99 13.92 3.22437.7 57.4 42.94 9.08 7.81 2.83 10.19 5.98 16.08 3.54499.8 64.9 49.03 10.29 7.79 2.81 10.19 5.96 19.16 4.01540.7 69.8 53.04 11.09 7.78 2.80 10.19 5.95 21.14 4.32500.4 65.0 42.59 8.78 9.01 3.25 11.75 6.94 12.56 3.42532.7 69.0 45.34 9.32 9.00 3.24 11.75 6.94 14.02 3.64596.8 76.9 50.79 10.40 8.99 3.23 11.75 6.93 16.98 4.06660.3 84.6 56.20 11.47 8.98 3.22 11.75 6.92 19.92 4.47754.6 95.9 64.22 13.02 8.97 3.20 11.75 6.90 24.19 5.08816.8 103.3 69.51 14.04 8.96 3.19 11.75 6.89 26.92 5.48728.3 78.1 54.83 10.03 10.08 3.30 13.28 7.25 16.02 3.91816.2 87.1 61.45 11.20 10.07 3.29 13.28 7.24 19.54 4.37903.4 95.9 68.01 12.34 10.06 3.28 13.28 7.23 23.08 4.811033.0 108.7 77.76 14.03 10.05 3.26 13.28 7.22 28.28 5.471118.5 117.1 84.20 15.13 10.04 3.25 13.28 7.21 31.63 5.901287.4 133.4 96.91 17.27 10.02 3.22 13.28 7.19 38.06 6.731362.7 135.7 89.15 15.48 11.58 3.65 15.29 8.23 27.81 6.041559.1 154.2 102.00 17.61 11.57 3.64 15.29 8.22 34.67 6.871689.0 166.2 110.50 19.01 11.55 3.62 15.29 8.21 39.18 7.411945.9 189.6 127.31 21.73 11.53 3.60 15.29 8.18 47.87 8.482228.1 206.6 128.89 21.18 13.07 3.98 17.29 9.21 40.77 8.262414.5 222.9 139.67 22.87 13.06 3.97 17.29 9.20 46.50 8.922783.8 254.7 161.03 26.18 13.04 3.94 17.29 9.18 57.73 10.213057.8 277.9 176.88 28.61 13.03 3.93 17.29 9.17 65.86 11.16

SECTION A LDepth mm mm mm

142 43 13

172,202 43 14

232,262 43 16

302 53.5 18

342 53.5 20

C-Section Dimensions and Properties

L

Cx(D/2)

t

X

Y

Cy Y

B

X

L

Depth

A

A

The Section reference of a C-Section 342mm deepand 3.2mm thick = 342 C 32. The first 3 digits of thesection reference indicate the depth of the section inmillimetres (ie 342 equals 342mm deep).

The fourth digit is a letter that signifies the profiletype (ie C for C Profile). The last two digits indicatethe material thickness (ie 32 equals 3.2mm).

SLEEVES

See page 27 for C-Section sleeve referencesand weights.

C-Se

ctio

n Di

men

sion

s an

d Pr

oper

ties

5

NOMINAL DIMENSIONSSECTION WEIGHT AREA DEPTH FLANGE t

REFERENCE kg/m cm2 mm mm mm142 C 13 2.94 3.75 142 64 1.3142 C 14 3.16 4.03 142 64 1.4142 C 15 3.38 4.31 142 64 1.5142 C 16 3.60 4.58 142 64 1.6142 C 18 4.03 5.13 142 64 1.8142 C 20 4.46 5.68 142 64 2.0172 C 13 3.35 4.27 172 69 1.3172 C 14 3.60 4.59 172 69 1.4172 C 15 3.85 4.91 172 69 1.5172 C 16 4.10 5.22 172 69 1.6172 C 18 4.59 5.85 172 69 1.8172 C 20 5.08 6.48 172 69 2.0172 C 23 5.81 7.40 172 69 2.3172 C 25 6.29 8.01 172 69 2.5202 C 14 3.93 5.01 202 69 1.4202 C 15 4.21 5.36 202 69 1.5202 C 16 4.48 5.70 202 69 1.6202 C 18 5.02 6.39 202 69 1.8202 C 20 5.56 7.08 202 69 2.0202 C 23 6.35 8.09 202 69 2.3202 C 25 6.88 8.76 202 69 2.5232 C 15 4.79 6.11 232 76 1.5232 C 16 5.11 6.50 232 76 1.6232 C 18 5.73 7.29 232 76 1.8232 C 20 6.34 8.08 232 76 2.0232 C 23 7.26 9.24 232 76 2.3232 C 25 7.86 10.01 232 76 2.5262 C 16 5.57 7.10 262 80 1.6262 C 18 6.25 7.96 262 80 1.8262 C 20 6.92 8.82 262 80 2.0262 C 23 7.92 10.09 262 80 2.3262 C 25 8.59 10.94 262 80 2.5262 C 29 9.90 12.61 262 80 2.9302 C 20 7.89 10.06 302 89 2.0302 C 23 9.04 11.52 302 89 2.3302 C 25 9.80 12.49 302 89 2.5302 C 29 11.31 14.41 302 89 2.9342 C 23 10.13 12.90 342 97 2.3342 C 25 10.98 13.99 342 97 2.5342 C 29 12.68 16.15 342 97 2.9342 C 32 13.94 17.76 342 97 3.2

SECTION PROPERTIESIxx Iyy Zxx Zyy rxx ryy Cy Q Mc,x Mc,ycm4 cm4 cm3 cm3 cm cm cm kNm kNm

124.1 20.6 17.48 4.62 5.73 2.33 1.95 0.569 5.55 1.80133.3 22.0 18.77 4.95 5.73 2.33 1.95 0.606 6.25 1.93142.4 23.5 20.05 5.28 5.72 2.32 1.95 0.641 6.96 2.06151.4 24.9 21.32 5.60 5.72 2.32 1.95 0.673 7.66 2.18169.3 27.7 23.85 6.23 5.71 2.31 1.95 0.729 9.05 2.43187.0 30.5 26.34 6.86 5.70 2.30 1.95 0.775 10.37 2.67203.6 26.8 23.68 5.46 6.86 2.49 1.99 0.505 6.95 2.13218.7 28.8 25.44 5.86 6.86 2.49 1.99 0.539 7.87 2.28233.8 30.7 27.18 6.24 6.85 2.48 1.99 0.571 8.80 2.44248.7 32.6 28.92 6.63 6.85 2.48 1.99 0.601 9.74 2.59278.3 36.3 32.36 7.39 6.84 2.47 1.99 0.656 11.62 2.88307.6 39.9 35.77 8.13 6.83 2.46 1.99 0.702 13.45 3.17351.0 45.2 40.82 9.21 6.81 2.45 1.99 0.757 16.05 3.59379.5 48.7 44.13 9.92 6.80 2.44 1.99 0.787 17.70 3.87317.3 30.2 31.42 5.95 7.91 2.44 1.83 0.497 9.35 2.32339.2 32.2 33.58 6.35 7.90 2.43 1.83 0.527 10.49 2.48360.9 34.2 35.74 6.74 7.90 2.43 1.83 0.554 11.63 2.63404.1 38.1 40.01 7.51 7.89 2.42 1.83 0.605 13.90 2.93446.9 41.9 44.25 8.26 7.88 2.41 1.83 0.646 16.12 3.22510.2 47.5 50.52 9.37 7.86 2.40 1.83 0.696 19.30 3.65551.9 51.1 54.65 10.09 7.85 2.39 1.83 0.723 21.33 3.93503.0 44.4 43.36 7.90 9.04 2.69 1.98 0.476 12.50 3.08535.4 47.1 46.16 8.39 9.04 2.68 1.98 0.503 13.94 3.27599.9 52.5 51.71 9.36 9.03 2.67 1.98 0.552 16.86 3.65663.7 57.9 57.22 10.31 9.02 2.66 1.99 0.596 19.77 4.02758.4 65.7 65.38 11.70 9.00 2.65 1.99 0.648 24.00 4.56820.9 70.8 70.77 12.61 8.99 2.64 1.99 0.677 26.71 4.92733.9 55.3 56.03 9.19 10.12 2.78 1.99 0.463 15.94 3.59822.5 61.7 62.79 10.26 10.11 2.77 1.99 0.510 19.42 4.00910.4 68.0 69.49 11.31 10.10 2.76 1.99 0.552 22.93 4.411040.9 77.2 79.46 12.85 10.09 2.75 1.99 0.605 28.09 5.011127.0 83.2 86.03 13.85 10.08 2.74 1.99 0.633 31.42 5.401297.2 94.9 99.02 15.80 10.06 2.72 2.00 0.679 37.81 6.161369.3 95.7 90.68 14.22 11.61 3.07 2.17 0.500 27.71 5.551566.7 108.8 103.76 16.17 11.59 3.05 2.17 0.554 34.51 6.311697.2 117.3 112.40 17.45 11.58 3.05 2.18 0.585 38.96 6.811955.4 134.1 129.49 19.95 11.56 3.03 2.18 0.634 47.55 7.782231.5 144.2 130.50 19.56 13.08 3.33 2.33 0.510 40.77 7.632418.2 155.7 141.41 21.12 13.07 3.32 2.33 0.542 46.42 8.242788.0 178.1 163.04 24.18 13.05 3.30 2.33 0.594 57.43 9.433062.4 194.5 179.08 26.41 13.04 3.29 2.34 0.624 65.40 10.30

Component ApplicationsCo

mpo

nent

App

licat

ions

6

C-Section Wind Bracing Eaves Beam C-Section Roof Light/Vent TrimmersROOF PLAN

Column Ties C-Section Parapet Posts Parapet Capping Rail

C-Section Brickwork Restraints

C-Section Wind Bracing

C-Section Window Header & Cill Rail 44

SIDE ELEVATION

28

23

48 20 50

43 43

48

Component Applications

Com

pone

nt A

pplic

atio

ns

7

Eaves Brace

Round-Lok Anti Sag Rods

Cleader Angle

Zed Purlins

Side Rails

Side Rail Support System C-Section Door Posts 4535 C-Section Sheeting Posts 47

GABLE ELEVATION

14

14

19

08

24

Zed Profile PurlinJointing Arrangements

Zed

Prof

ile P

urlin

Join

ting

Arra

ngem

ents

8

Sleeved System - Single Span Lengths

For buildings with 2 bays and over wherea heavy end bay system is precluded andrafter spacings up to 15 metres. Standardsleeves are fitted at all penultimate rafterconnections and staggered on all internalbays.

Heavy End Bay System - Single Span Lengths

For buildings with 5 bays and over andrafter spacings up to 15 metres. Heaviergauge purlins are fitted in the end bays withlighter purlins fitted on internal bays.Penultimate rafter joints are fully sleeved inthe same gauge material as the end baypurlins and are longer than the standardsleeve. Internal bays are sleeved at everyjoint with standard sleeves of the samegauge material as the inner bay purlins.

Heavy End Bay Double Span - Double Span Lengths

As above except inner bay purlins aredouble span in max lengths of 15 metres.

Load Tables -58 62

Details 12

Load Tables -63 64

Details 9

Load Tables -54 57

Details 10

2 Bays Minimum & rafter spacing up to 15m

4 Bays Minimum & rafter spacing up to 7.5m

Sleeved System - Double Span Lengths

As above but standard sleeves are fittedat all penultimate rafter connections andstaggered on all internal bays.

5 Bays Minimum & rafter spacing up to 15m

5 Bays Minimum & rafter spacing up to 7.5m

1 Bay Minimum & rafter spacing up to 12m

Butt System

This system can cater for odd bays andcan be used in both inset and oversailapplications.

Zed

Butt

Purli

n Sy

stem

Lay

out &

Det

ailin

g

9

Zed Butt Purlin SystemSingle/Odd Bays Layout & DetailingRoof purlins Zed Profile Butt System suitable forbuildings with single bays or more, up to andincluding 25 roof pitch.

The Butt System offers a simple cleat connection and isintended for smaller buildings, short or uneven span orlight loading conditions.

The butt system caters for spans up to 12m dependingon the load to be applied and where the cladding orliner tray offers adequate lateral support by virtue of itsfixing, ie fixed according to the cladding manufacturersinstructions.

This system can cater for single bays,therefore can be used in conjunction

with other systems detailed in thisbrochure,or as a system in its

own right.

For full cleat detailssee page 52.

C

56

86

116

146

176

195

235

B

42

42

42

42

42

52

52

F

50

50

50

50

50

60

60

A

142

172

202

232

262

302

342

BUTT SYSTEMDetailing Dims in mm

70

SINGLE SPAN33

F

OVERALL LENGTH

A C

B

OVERALL LENGTH

32 32

CL CL CL

P1 and P1X opposite hand P2

**

General DetailingInformation

All web holes 18mmdiameter for M16 bolts.

All dimensions in millimetres.

Clearance between purlins atall joints is 6mm.

End fixing holes aresupplied as shown, other18mm diameter holes whichmay be required are piercedin pairs on standard gaugelines.

P1

P1

P1

P1

P1

P1

P1

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P2

P1x

P1x

P1x

P1x

P1x

P1x

P1x

Computer controlledproduction techniques apply

the clients individual mark numbersto all purlins automatically during

the manufacturing process.

* Anti Sag Rod Holes

Load Tables -63 64

Typical single span arrangement indicating the purlin positions.

Single Span System

Roof purlins for buildings with 2 bays and over,up to and including 25 roof pitch.

The sleeved system optimises the use of steel byincorporating sleeves at the penultimate rafter with astaggered sleeving arrangement on internal bays.The sleeved system caters for spans up to 15mdepending on the load to be applied and where thecladding or liner tray offers adequate lateral supportby virtue of its fixing, ie fixed according to thecladding manufacturers instructions.To enable the purlin and sleeve to nest together thesleeve is inverted. For full cleat details see page 52.

Computer controlled productiontechniques apply the clients individual marknumbers to all purlins automatically duringthe manufacturing process.

Zed Sleeved Purlin System 2 Baysand Over where Heavy End BaySystem* is precluded

Zed

Slee

ved

Purli

n Sy

stem

2 B

ays

and

Over

- La

yout

10

Double Span System

End bay purlins are single span, with double span purlinson internal bays. The maximum span between rafters is 7.5m thereforemaximum double span length is 15m. Consideration mustbe given to the handling of longer lengths.

A sleeve must always occur at a joint position.

Single Span System

Single span lengths can be supplied to suit individualrequirements.

Penultimate rafter connections are sleeved with astaggered sleeving arrangement on internal bays.

See opposite for individual mark number details

Typical single span arrangement indicating purlinand sleeve positions.

P1

P1

P1

P1

P1

P1

P4

P3

P4

P3

P4

P3

P4x

P4

P4x

P4

P4x

P4

P3

P4x

P3

P4x

P3

P4x

P1x

P1x

P1x

P1x

P1x

P1x

Typical double span arrangement indicating purlinand sleeve positions.

P1

P1

P1

P1

P1

P1

P3

P3

P3

P 2

P 2

P 2

P 2

P 2

P 2

P1x

P1x

P1x

P1x

P1x

P1x

P3

P3

P3

* Lighter purlins can be fitted on internal bays when aHeavy End Bay System is adopted (see page 12)

Load Tables -54 57

Zed Sleeved Purlin System 2 Baysand Over where Heavy End Bay System*is precluded

Zed

Slee

ved

Purli

n Sy

stem

2 B

ays

and

Over

- De

taili

ng

11

OVERALL LENGTH

CENTRE LINE OF RAFTERS CENTRE LINE OF RAFTERS

WIDE FLANGE WIDE FLANGE

NARROW FLANGE

CENTRE LINE OF RAFTERS CENTRE LINE OF RAFTERS

WIDE FLANGE

NARROW FLANGE

CENTRE LINE OF RAFTERS

WIDE FLANGE

WIDE FLANGE

WIDE FLANGE

NARROW FLANGE

NARROW FLANGE NARROW FLANGE

3 3

3 332 32

D

D

D

32 32D D

C AE

C AB

F

C

3 32 D D3232

3 32 D 3 3

P1 and P1X (opposite hand)

P2

P3

P4 and P4X (opposite hand)

E

VARIABLE OVERHANG

F

50

50

50

50

50

60

60

G

614

714

834

954

1054

1354

1654

E

44

44

44

44

44

55

55

D

240

290

350

410

460

610

760

C

56

86

116

146

176

195

235

B

42

42

42

42

42

52

52

A

142

172

202

232

262

302

342

SLEEVED SYSTEMDetailing Dimensions in mm

General Detailing Information

All web holes 18mm diameter forM16 bolts.

All dimensions in millimetres.

Clearance between purlins at all jointsis 6mm.

All holes are pierced in pairs onstandard gauge lines.

For full cleat details see page 52.

* Lighter purlins can be fitted on internal bays when aHeavy End Bay System is adopted (see page 12)

* ANTI SAG RODHOLES, SEE PAGE 14FOR DETAILS.

8 HOLE SLEEVEFOR 232 SERIESAND ABOVE,ALL OTHERS6 HOLE SLEEVE.

70

G G

G G

70

G

70

Load Tables -54 57

* *

* *

*

Roof purlins for buildings with 5 bays or more, up to and including 25 roof pitch.

The Heavy End Bay System invariably provides the mosteconomic solution by utilising the benefits of the sleevedsystem but further maximising this by the use oflighter gauge purlins on internal bays.

This system caters for spans up to 15 metres dependingon the load to be applied and where the cladding orliner tray offers adequate lateralsupport by virtue of its fixing,i.e. fixed according to the claddingmanufacturers instructions.

To enable purlin and sleeveto nest together the sleeveis inverted.

Purlin & Sleeve Arrangement

End bay purlins (ie P1 & P1X) and penultimate raftersleeves are of the same heavier gauge, whilstinner bay purlins (ie P2, P3, P5, P5X, P6, P6X) andsleeves are of the same lighter gauge. A sleeve mustalways occur at a joint position.

Computer controlledproduction techniquesapply the clients individualmark numbers to all purlinsautomatically during themanufacturing process.

Heavy End Bay Sleeved Purlin System5 bays and Over - Layout

Heav

y En

d Ba

y Sl

eeve

d Pu

rlin

Syst

em -

Layo

ut

12 Load Tables -58 62

F

50

50

50

50

50

60

60

G

614

714

834

954

1054

1354

1654

J

750

914

1074

1300

1500

1700

2000

E

44

44

44

44

44

55

55

D

240

290

350

410

460

610

760

H

308

390

470

583

683

783

933

C

56

86

116

146

176

195

235

B

42

42

42

42

42

52

52

A

142

172

202

232

262

302

342

HEAVY END BAY SYSTEMDetailing Dimensions in mm

Single Span HEB SystemP1

P1

P1

P1

P1

P1

P5

P5

P5

P5

P5

P5

P3

P3

P3

P3

P3

P3

P5x

P5x

P5x

P5x

P5x

P5x

P1x

P1x

P1x

P1x

P1x

P1x

Double Span HEB System

P1

P1

P1

P1

P1

P1

P1x

P1x

P1x

P1x

P1x

P1x

P5x

P5x

P5x

P 6

P 6

P 6

P 2

P 2

P 2

P 2

P 2

P 2

P 6x

P 6x

P 6x

P5

P5

P5

Consideration must be given to the handling of longer lengths.

Heavy End Bay Sleeved Purlin System5 bays and Over - Detailing

Heav

y En

d Ba

y Sl

eeve

d Pu

rlin

Syst

em -

Deta

iling

13Load Tables -58 62

P1 & P1X (opposite hand) P5 & P5X (opposite hand)

P6 & P6X (opposite hand)

P2

P3

WIDE FLANGEWIDE FLANGE WIDE FLANGE

WIDE FLANGE WIDE FLANGE

WIDE FLANGE

WIDE FLANGE

WIDE FLANGE

NARROW FLANGENARROW FLANGE

NARROW FLANGE NARROW FLANGE

D

E

D

D D

32

3232

32

A CE

H

OVERALL LENGTH

CENTRE LINE OF RAFTERS CENTRE LINE OF RAFTERS

CENTRE LINE OF RAFTERS CENTRE LINE OF RAFTERS

* ANTI SAGROD HOLES

WIDE FLANGE

70H H 3232

F

C

A CB

H H32 32 DD 3232

3

33

323

3

G

G

G

NARROW FLANGE

NARROW FLANGE

NARROW FLANGE

NARROW FLANGE

D D3232D

CENTRE LINE OF RAFTERS CENTRE LINE OF RAFTERS

WIDE FLANGE

3 3

323

D

CENTRE LINE OF RAFTERS

WIDE FLANGE

323General Detailing Information All web holes 18mm diameter

for M16 bolts.

All dimensions in millimetres.

Clearance between purlinsat all joints 6mm.

All holes are pierced in pairson standard gauge lines.

For full cleat details see page 52.

70

70

G

G

J

70

G

VARIABLE OVERHANG

70

70

J

* *

* *

* *

*

Anti-Sag Rods & Eaves BracesAn

ti-Sa

g Ro

ds &

Eav

es B

race

s

14

Round Lok Anti-Sag Rod

Without Anti-Sag rods With Anti-Sag rods

25

25

Purlin Centres

Diameter 16mm

StandardGauge Linesfor Purlin

28

28

Lateral Support Angle (Sag Bar)/Eaves Braces For 302 & 342 series and all non restrainingcladding applications

Eaves Braces 142, 172, 202, 232 & 262 series as drawnEaves Strut as noted

Purlin Centres

A

28 28

28

B

All holes 18mm for M16 bolts.Material: 45 x 45 x 2mm thick.

As other end forEaves Strut

For 142,172, 202, 232, 262 series

SECTIONA

B

142

2856

172

4386

202

58116

232

73

146

262

88

176

Bolted Apex TieRound Lok Apex Tie

Metsec Round lok anti-sag rods and lateral supportangles are designed to restrain purlins against twistunder wind uplift conditions and contribute supportduring sheeting.

Round lok anti-sag rods are used for 142, 172, 202, 232and 262 series and 45 x 45 x 2mm thick lateral supportangles for 302 and 342 series. On roof pitches over25, purlin spacings over 2.4m or heavy claddingapplications,the lateral support angles must be used onall sections.

When no anti-sag rods are used, temporary spacer bars and propping may be required during the sheeting of the roof.

For roof pitches greater than 25use the MetSPECcomputer design program to determine section andbracing requirements.

Whenever round lok anti-sag rods are used the eavesbrace should be included as indicated in the drawingand the rows made continuous over the apex.

The bolted apex strut detail is adopted when usingnon-restraining cladding, 302 and 342 series purlinsor roof pitches over 25. In all other cases where an anti-sag system is required,Metsec tubular sag rods and apex ties are used.All eaves braces are manufactured from 45 x 45 x 2.0mm galvanised angle.

Wind up lift tables from P54 give the minimumSag Rod requirements for the various systems.

However it is recommended that whateverthe wind loading the maximum span withoutAnti-Sag rods should be as shown in thetables opposite.

Sleeve, Butt andEnd Bays Only for Heavy End

Bay System

Inner Bays Only forHeavy End Bay System

PURLIN REF SPAN142172202/232262302/342

6.1m6.6m7.2m7.6m8.1m

PURLIN REF SPAN142172202/232262302/342

6.6m7.2m7.6m8.1m8.6m

Long Roof Slopes, Length > 20m

Long

Roo

f Slo

pes,

Len

gth

> 20

m

15

1. For roof slopes less than 20m in length diagonaltie wires can be omitted. Where no anti-sag rods arerequired for wind uplift, for stability during erectionand cladding we recommend the inclusion of aneaves strut and apex tie. Temporary spacer bars andpropping may also be required.

2. The details shown on this page assume that adequate restraint to the purlins is provided by thecladding or liner tray screw fixed at 600mm maximum spacings to the purlins. Additional screwsmay be necessary to zones of high local wind loadssuch as eaves and verges.

NB. An Eaves strut may also be required to suit thedesign of the Metsec Eaves Beam.

Restraint fixing details similar to Page 34for Vertical Cladding

20m

max

.

SPANEaves Beam

20m

max

.

20m

max

.20

m m

ax.

20m

max

.20

m m

ax.

SPANEaves Beam SPAN

Eaves Beam

1

1

1

23

2

2

3

TOP OF PURLIN

Anti-Sags

Eaves Brace

DTW

Eaves Strut

ROOF PLAN 2-SAGROOF PLAN 3-SAG

ROOF PLAN 1-SAG

Anti-Sags

Eaves Brace

DTW

Eaves Strut

Anti-Sags

Eaves Brace

DTW

Eaves Strut

Eaves Purlin

* ** All diagonal tie wires must be connected

to bottom holes in the purlin cleat.

*

TOP OF PURLIN TOP OF PURLIN

70 70

70 70

Roof VariationsRo

of V

aria

tions

16

Non Restraining CladdingWhen using cladding which is notfixed in accordance with Note 2 onpage 15 it is necessary to providepermanent lateral restraint to thepurlins. The MetSPEC purlin designSoftware will provide a comprehensivedesign solution to any non restrainingcladding application.

NB:- Bolted apex struts and 45mm x45mm lateral support angles must beused throughout.

Steep Slopes >25 PitchThe sheeting and fixings are deemedadequate in carrying the component ofload in the plane of the roof slope onpitches up to 25 degrees. For roofpitches greater than 25 the purlins aredesigned for the downslope roof loads. The MetSPECpurlin design software will quickly determine thepurlin section and bracing requirements for anyapplication.

NB:- Bolted apex struts and 45mm x 45mm lateralsupport angles must be used throughout in lieu ofround lok anti-sag rods.

Duo-Pitch Mono-Pitch Steep Slopes Tiled Roofs None Restraining2.4m inheavy cladding applications

Mono-Pitched Roofs

Tiled RoofsPitched & Mansard Roofs

Tile

d Ro

ofs

Pitc

hed

& M

ansa

rd R

oofs

17

The Metsec lateral support member asshown should be used in the roof planand wherever possible, should be tiedacross the apex, or fixed to a laterallyrigid component. In addition to this,diagonal tie wires must be installed asdescribed below.

Bolted apex struts and 45mm x 45mmlateral support angles must be usedthroughout.

The MetSPEC purlin design softwarecan be used to quickly determine thepurlin section and bracing requirementsfor any application.

3.6m (max)

3.6m (max)

3.6m (max)

3.6m (max)

3.6m (max)

3.6m (max)

Apex detail as above

Typical arrangement when 2 lateralsupports are used

Typical arrangement when 1 lateral support is used

Illustration shows purlins at1.2m centres, however themaximum purlin centresshould not exceed 1.8m.

600mm

max.

Cantilever DetailsCa

ntile

ver D

etai

ls

18

StabilityWith cantilevers it is recommended that the ends arebraced together to provide stability and prevent rotation.Various details are used for this purpose with a typicalexample shown below.

A cleader angle fixed to the top and the bottom ofthe purlin will offer sufficient restraint as well asproviding a base for fixing the sheeting and flashing.Cleader angles should be positively fixed across theapex to prevent down slope movement.

Mono Pitched Roofs and roof slopes exceeding 25Diagonal Tie Wire systems to be included. Alternatively,a suitable fixing to a structural member must be includedat the top of the slope to resist down slope movement.

Diagonal tie wires must be fixed back to the bottom holesin the purlin cleat.

Note:-For other specialist cases or heavier cladding systems(i.e. tiles and battens) consult our design office.

End Bay Purlin

Rafter

Column

Soffit Cladding

Side Cladding

Roof Cladding

Cleader Angle

Diagonal tie wire requiredfor mono pitchedroofs and roof slopesexceeding 25o

Cleader Angle

When it is required to provide a canopy bycantilevering the purlins over the gable, simple rulesare given below to enable the engineer to meetthese requirements.

PerformanceIn the approach given it is assumed the sections areinstalled in one continuous length i.e. backing spanand overhang and that the sheeting offers full lateralrestraint to the section.

Deflection CriteriaPurlins selected from this Technical Manual obey adeflection criteria of SPAN /180 for conventional steeldecking.

The end deflection of a cantilever should be compatiblewith this and we recommend the cantilever should not exceed 28% of the backing span, to meet thisrequirement.

Cleader Angles & Rafter Stays

Clea

der A

ngle

s &

Raf

ter S

tays

19

CL

CL

CL

Metsec Cleader Angles are manufactured frompre-hot dipped galvanised steel angle. They are used to provide a sheeting face for cladding along gablerafters or at roof hip intersections.

Two sizes of cleader angle are available:

45 x 45 x 2mm thick = 1.37 kg/m

100 x 100 x 2mm thick = 3.17 kg/m

Maximum length = 7.5m

We suggest that the 45 x 45 x 2mm cleader angleis used on purlin centres up to and including 1.8m.Above this 100 x 100 x 2mm cleader angle shouldbe used.

The details show cleader spanning over two purlinspacings, however multiple spacings can be readilyaccommodated. Providing the thickness of the cleaderangle (2.0mm) does not present any problems asimple overlap can be used. The overall length wouldtherefore be the purlin centres plus 28mm each end.

The cleader angle can be fitted to either the top orbottom purlin flange to suit the required detail.

Where possible the standard sleeve fixing holes may beused for rafter stay fixings, providing the inclination of thestay is not too steep.

Rafter stays supplied by Metsec are normally45 x 45 x 2mm thick angle. On deep sections or latticetrusses, it may be necessary to increase the size of the anglesection used to suit the individual contract requirements.

Where the supporting steelwork is constructed usingdeep universal beam sections, lattice trusses, etc.,rafter stay fixing holes can be added to suit individualrequirements (ideally to suit angle of rafter stay 45o).

* Dimension to suit standard sleeve piercing

A typical detail showing the side cladding fixed tothe purlin with a cleader angle.

* *

= =

Eaves BeamsDimensions & Properites

Eave

s Be

ams

Dim

ensi

ons

& P

rope

rties

20 Load Tables 73

The Metsec Eaves Beam is a purpose designed profilefor use as an eaves purlin, top sheeting rail and guttersupport.

Maximum SpanThe Metsec Eaves Beam caters for spans up to 15mdepending on the load to be applied.

PerformanceMetsec Eaves Beams are designed as single spanbeams with combination loading in accordance withBS 5950:Part 5.

The load tables represent their performance under theconditions stated but cannot cover all of the manyfunctions possible. For this reason, and to help thedesigner, comprehensive geometrical design data isgiven in the physical properties table.

SpecificationEaves Beams are manufactured from pre-hot dippedgalvanised steel with a minimum guaranteed yieldstress of 390 N/mm2.

CapacityBased on single span condition.

Web holes can be plain or counterformed to suit thefixing requirement. See opposite for details.

NoteFor Bracing Requirement see p14.

Depth

D

B

C

23

Cy

65

100

Angle 0- 25in 5 increments

All holes 18mm diameterfor 16mm bolts.

23

t

Q poN/mm2Mc,ykNm

Cycm

Mc,xkNm

3.513.513.073.082.842.842.562.56

0.6330.7140.5570.6680.6170.6790.6100.641

0.6280.7090.5530.6650.6150.6780.6090.642

15.54119.39521.66830.77936.80345.41756.76864.706

6.9177.8767.1668.8148.964

10.26510.46411.436

402.9460.2800.7991.6

1435.51653.92644.52904.7

I xxcm4

170 E 20

170 E 23

230 E 20

230 E 25

270 E 25

270 E 29

330 E 29

330 E 32

SECTION REFERENCE

2.02.32.02.52.52.92.93.2

8.069.229.26

11.4912.4914.4116.1517.76

6.327.247.279.029.80

11.3112.6813.94

Weightkg/m

Areacm 2

170170230230270270330330

SECTION REFERENCE

Depthmm

Flangemm

tmm

Iyycm4

Zyycm3

rxxcm

ryycm

NOMINAL DIMENSIONS

SECTION PROPERTIES

170 E 20

170 E 23

230 E 20

230 E 25

270 E 25

270 E 29

330 E 29

330 E 32

100100100100100100100100

4242424247474848

4242424247474747

8686

146146176176235235

Zxxcm3

115.1131.1127.3156.5164.5188.4199.7218.2

47.4054.1569.6386.23

106.33122.51160.27176.04

17.7420.2018.3722.6022.9826.3226.8329.32

7.037.019.259.23

10.6510.6312.7112.70

3.763.743.693.673.613.593.493.48

DimB mm

DimC mm

DimD mm

Eaves Beams Fixing Details

Eave

s Be

ams

Fixi

ng D

etai

ls

21Load Tables 73

Eaves beam

Packing Plate

Stiffener CleatReferenceEBS. 170EBS. 230EBS. 270EBS. 330

Side rail support

Stiffener Cleat slot18 x 24

Eaves brace

VIEW IN DIRECTION OF ARROW A

A

86

= =

30 30

Centres - see table

30

30

35 35

70

Packing Plate

Cladding flush withcolumn face

Cladding outsidecolumn face

32* 323

Length - see table

Hole 36mm

Metsec Eaves Beams are designed to providean unobstructed side sheeting face by the use ofcounterformed web holes that accept 16mm diametercountersunk set screws.

The packing plate accommodates the counterformingand enables standard eaves braces to be fitted, thoughthe overall length of the eaves brace needs to bereduced by 6mm.

Plain web holes can be supplied and in such cases thepacking plate is not required and conventional 16mmdiameter XOX bolts are used.

End fixing cleat (supplied by others) boltedor welded to column.

Overall length of EavesBeam is column centresless 6mm(i.e. 3mm each end).

* Overall length of EavesBeam is column centresless half column widtheach end less 20mm(i.e. 10mm each end).

Material - 6mm mild steelgalvanised finish

Side Rail Support Systems up to a sheetingheight of 10m (see page 33 forrecommendations) can be suspended from thebottom f lange of the eaves beam. In such

cases a stiffening cleat (galvanised finish)must be included and the eaves braceoverall length reduced by a further 6mm(cleat thickness).

142172/170

202232/230262/270

302342/330

5686

116146176195235

116146176206236255295

PP1PP2PP3PP4PP5PP6PP7

SECTION SERIES

CRSmm

LENGTHmm

REFNo.

Eaves BeamsGutter Details

Eave

s Be

ams

Gutte

r Det

ails

22

General Note

Eaves Beams and Purlins should be selected from therespective load tables. If necessary, non-standard eavesbracings can be fabricated to suit individual cases.

It is essential to use bolted web connections whenfixing Eaves Beams to stanchions.

Detail at Column

Curved Eaves Detail Concealed Eaves Gutter Curved Base Detail

Detail within Span

Detail at Column Detail within Span

EXPOSED EAVES GUTTER

CONCEALED EAVES GUTTER

Curved Eaves DetailThe Purlin and Side Rail systems canbe used to provide support to roof andside cladding, using the appropriateload table for the system being used.

Eaves Braces and the Side Rail Supportsystem should be used dependant onspan and loading requirements.

Curved Base DetailTo complement the Curved Eaves detaila support system should be includedat the base of the Side Cladding asshown.The sloping Side Rail Supportmember being included dependingupon span and loading requirements.

If support can be taken from themasonry, the Sloping Side Rail Supportmay be omitted.

Concealed Eaves GutterThe Concealed Gutter is accommodated inconjunction with the curved eaves detailwith support given to the lower roofpurlin by the sloping Eaves PurlinSupport shown and the rainwater gutter.

The special Sloping Eaves Purlin Supportcan be supplied by Metsec if required.

The Side Rail Support system should beused dependant on span and loadingrequirements.

The use of lateral braced connections is necessary withinthe span of the Eaves Beam to resist horizontal windloading and torsion from eccentric gutter loads.

When braced to the first purlin, as shown, such forces aredispersed through the diaphragm action of the roof.

It is assumed that the compression flange of the EavesBeam is fully restrained by the sheeting.

Column Ties

Colu

mn

Ties

23

Metsec C-Section compound column ties offersignificant economic advantages from initialpurchase through to on site installation.

Supplied as single components,C Sections are installed on site toform a compound back to backmember and produce excellentstrength to weight characteristics.

The selection of C Sectionsand general design guidance isdetermined from the Metspeccomputer design software.

End Connection Details

Column Tie

C-Section & Zed Side Rail SystemJointing Arrangements

C-Se

ctio

n &

Zed

Sid

e Ra

il Sy

stem

Join

ting

Arra

ngem

ents

24

Load Tables 72

C-Section Details 28

Load Tables -65 68

Zed Profile Details 30

C-Section Details 26

Load Tables -65 68

Zed Profile Details 30

C-Section Details 26

Sleeved System - Single Span Lengths

Sleeves are fitted atpenultimate columnconnections and staggeredon internal bays.

Sleeved System - Double Span Lengths

Sleeves are fitted atpenultimate columnconnections and staggeredon internal bays.

Butt System

This system can cater forodd bays and can be usedin both inset and outsideapplications.

Double Span System -Window and BrickworkRestraints only

This system is used whendeflection is criticali.e. glazing supports andbrickwork restraints.

The sleeve is only includedwhen an odd number ofbays is encountered.

Load Tables -69 71

Zed Profile Details 32

C-Section Details 25

1 Bay Minimum & Column Spacing up to 15m

2 Bays Minimum & Column Spacing up to 15m

4 Bays Minimum & Column Spacing up to 7.5m

2 Bays Minimum & Column Spacing up to 7.5m

C-Section Butt Side Rail SystemSingle/Odd Bay Layout & Detailing

C-Se

ctio

n Bu

tt Si

de R

ail S

yste

m

25Load Tables -69 71

Side Rails - C-Section Butt System suitable forbuildings with single bays or more.The Butt System offers a simple cleat connectionand is intended for smaller buildings, shortor uneven span or light loading conditions.

This system can cater for single bays, therefore canbe used in conjunction with other systems detailed inthis brochure, or as a system in its own right.

The Butt system caters for spans up to 15m dependingon the load to be applied and where the claddingor liner tray offers adequate lateral support by virtueof its fixing, ie fixed according to the claddingmanufacturers instructions.

For full cleat details see page 52.

Computer controlled production techniquesapply the clients individual mark numbersto all rails automatically during themanufacturing process.

70

3

A

OVERALL LENGTH

C

B

H

3 OVERALL LENGTH32 32

SINGLE SPAN

CL CL CL

R1 and R1x (opposite hand) R2

* SIDE RAIL SUPPORT HOLESAS NECESSARY

C

56

86

116

146

176

195

235

B

43.0

43.0

43.0

43.0

43.0

53.5

53.5

H

50

50

50

50

50

60

60

A

142

172

202

232

262

302

342

BUTT SYSTEMDetailing Dims in mm

General Detailing Information All web holes 18mm diameter for M16 bolts.

All dimensions in millimetres.

Clearance between rails at all joints is 6mm.

All holes are pierced in pairs on standard gauge lines.

R1

R1

R1

R1

R1

R1

R1

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R1x

R1x

R1x

R1x

R1x

R1x

R1x

Single Span Layout Single span lengths plus a variable overhang at each end.

* *

Side Rails C-Section Sleeved System. For buildings with 2 bays or more.

The sleeved System optimises the use of steel byincorporating sleeves at the penultimate rafter with astaggered sleeving arrangement on internal bays.

The sleeved system caters for spans up to 15mdepending on the load to be applied and where thecladding or liner tray offers adequate support byvirtue of its fixing, i.e. fixed according to the claddingmanufacturers instructions.

For full cleat details, see page 52.

Computer controlled production techniquesapply the clients individual mark numbersto all rails automatically during themanufacturing process.

C-Section Sleeved Side Rail SystemIntroduction

C-Se

ctio

n Sl

eeve

d Si

de R

ail S

yste

m In

trodu

ctio

n

26

Double Span System

End Bay Rails are single span, with double span railson internal bays. The maximum double span rail is 15m,therefore the maximum span between columns is 7.5m.A sleeve must occur at every joint position.

Typical double span arrangement indicating purlinand sleeve positions.

Typical single span arrangement indicating rail and sleeve positions.

Single Span System

Single span lengths can be supplied to suit individualrequirements. Penultimate rafter connections are sleevedwith a staggered sleeving arrangement on internal bays.

Load Tables -65 68

R1

R1

R1

R1

R1

R1

R3

R4x

R3

R4x

R3

R4x

R4x

R4

R4x

R4

R4x

R4

R4

R3

R4

R3

R4

R3

R1x

R1x

R1x

R1x

R1x

R1x

R1 R4x R4 R3 R1x

R1

R1

R1

R1

R1

R1

R3

R3

R3

R 2

R 2

R 2

R 2

R 2

R 2

R1x

R1x

R1x

R1x

R1x

R1x

R3

R3

R3

Consideration must be given to the handling of longerlengths.

C-Section Sleeved Side Rail SystemDetailing

C-Se

ctio

n Sl

eeve

d Si

de R

ail S

yste

m D

etai

ling

27Load Tables -65 68

CENTRE LINE OF COLUMNS

OVERALL LENGTH

CENTRE LINE OF COLUMNS

CENTRE LINE OF COLUMNS CENTRE LINE OF COLUMNS

CENTRE LINE OF COLUMNS

3 3

3232D D

32D D

G

C AB

C EF

H

3 D D D3232

3 32 D 3 3

3333

R1 & R1X (opposite hand)

R2

R3

R4 & R4X (opposite hand)

32

32

F

H

50

50

50

50

50

60

60

G

614

714

834

954

1054

1354

1654

F

45.5

45.5

45.5

46.0

46.0

56.5

57.0

E

147

177

207

238

268

308

349

D

240

290

350

410

460

610

760

C

56

86

116

146

176

195

235

B

43.0

43.0

43.0

43.0

43.0

53.5

53.5

A

142

172

202

232

262

302

342

C-SECTION SLEEVED SYSTEMDetailing Dimensions in mm

C-Section Sleeves

The C-Section sleeve range includes one thickness perheight of profile as shown on the table below.

GAUGE mm

2.0

2.0

2.0

2.5

2.5

2.5

3.2

REF NUMBER

CS. 142

CS. 172

CS. 202

CS. 232

CS. 262

CS. 302

CS. 342

C-SECTION SLEEVED SYSTEM DETAILS

WEIGHT kg

2.39

3.32

4.27

6.72

8.42

12.28

21.97

General Detailing Information

All web holes 18mm diameter forM16 bolts.

All dimensions in millimetres.

Clearance between rails at all jointsis 6mm.

All holes are pierced in pairs onstandard gauge lines.

70

70

70

VARIABLE OVERHANG

* SIDE RAIL SUPPORTHOLES AS NECESSARY

*

* *

*

*

C-Section Double Span Side RailSystem Introduction

C-Se

ctio

n Do

uble

Spa

n Si

de R

ail S

yste

m In

trodu

ctio

n

28 Load Tables 72

Double Span Layout

This arrangement can beused where stringentdeflection limits are applied.i.e. glazing supports,brickwork restraints etc.

Maximum Span

The maximum double spansection length is 15m,therefore the maximumcolumn centres are 7.5m.

These details are to be used for conditions wherea double span gives an advantage over single spani.e. deflection governing.

Typical application: Wall and brickwork restraints,window cill or header rails where deflection due tohorizontal wind is to be limited to a specific deflectionratio. eg brickwork restraint commonly limited to aratio of , as shown in the load tables. If a deflectionlimit greater than is required, then calculate thecapacity for this by multiplying the capacity given inthe table by

e.g. Required capacity for = x

It is not permissible to use this method to calculatecapacities for deflection limits less than span/300.

For brickwork restraints it is assumed that the wall willsupport the C-Rail on the weak axis.

For cases where the wall will not be built until after therail erection or where the wall is not to be built up sothat it supports both the inner and outer flanges of theC-Section on the Y axis, the Metsec side rail supportand diagonal tie systems are required.

It is assumed in all cases that a cladding system issecurely fixed to the rail to stabilise the outer flange.

For window cill support rails where the weight of thewindow is to be supported by the rail, see the side railsupport system for this condition, shown on P44.

Computer controlled production techniquesapply the clients individual mark numbersto all rails automatically during themanufacturing process.

SPAN300 SPAN

300

300The required

limit

300500

Table capacityfor span

SPAN500

Dimension X in sliding anchor fixing plate to suitstandard 18mm Dia. holes inMetsec rail

Sliding anchor support to top ofwall. Slotted ties to suit brickcoursing.

R 1

R3

R 2 R 1x

R 4 R 4x R3x

Typical double span arrangement for odd and even number bays

X

C-Section Double Span Side RailSystem Detailing

C-Se

ctio

n Do

uble

Spa

n Si

de R

ail S

yste

m D

etai

ling

29Load Tables 72

CENTRE LINE OF COLUMNS CENTRE LINE OF COLUMNS

OVERALL LENGTH

3

H

A CB

32

OVERALL LENGTH

CENTRE LINE OF COLUMNS CENTRE LINE OF COLUMNS

33

OVERALL LENGTH OVERALL LENGTH

CENTRE LINE OF COLUMNS CENTRE LINE OF COLUMNS

32D

F

32 D

D D32 3270

CE

G

R1 & R1x (opposite hand)

R2

R3 & R3x (opposite hand) R4 & R4x (opposite hand)

70 70

BUTTCONNECTION

This detail isonly used whenan odd numberof bays isencountered.

H

50

50

50

50

50

60

60

G

614

714

834

954

1054

1354

1654

F

45.5

45.5

45.5

46.0

46.0

56.5

57.0

E

147

177

207

238

268

308

349

D

240

290

350

410

460

610

760

C

56

86

116

146

176

195

235

B

43.0

43.0

43.0

43.0

43.0

53.5

53.5

A

142

172

202

232

262

302

342

C-SECTION DOUBLE SPAN SYSTEMDetailing Dimensions in mm

GAUGE mm

2.02.02.02.52.52.53.2

REF NUMBER

CS. 142CS. 172CS. 202CS. 232CS. 262CS. 302CS. 342

C-SECTION SLEEVE DETAILS

WEIGHT kg

2.393.324.276.728.42

12.2821.97

General Detailing Information

All web holes 18mm diameter forM16 bolts.

All dimensions in millimetres.

Clearance between rails at all jointsis 6mm.

All holes are pierced in pairson standard gauge lines.

VARIABLE OVERHANG

* SIDE RAIL SUPPORTHOLES AS NECESSARY.

* *

**

* *

Side Rails Zed Profile Sleeved System. For building with 2 bays or more.

The sleeved System optimises the use of steel byincorporating sleeves at the penultimate rafter with astaggered sleeving arrangement on internal bays.

The sleeved system caters for spans up to 15mdepending on the load to be applied and where thecladding or liner tray offers adequate support byvirtue of its fixing, i.e. fixed according to the claddingmanufacturers instructions.

To enable the side rail and sleeve to nest together thesleeve is inverted.

For full cleat details, see page 52.

Computer controlled production techniquesapply the clients individual mark numbersto all rails automatically during themanufacturing process.

Zed Sleeved Side Rail SystemIntroduction

Zed

Slee

ved

Side

Rai

l Sys

tem

Intro

duct

ion

30

Double Span System

End Bay Rails are single span, with double span rails oninternal bay. The maximum double span rail length is15m, therefore the maximum span between columns is7.5m. A sleeve must occur at every joint position.

Typical single span arrangement indicating rail and sleeve positions.

Single Span System

Single span lengths can be supplied to suit individualrequirements. Penultimate rafter connections are sleevedwith a staggered sleeving arrangement on internal bays.

See opposite for individual mark number details

Load Tables -65 68

R1

R1

R1

R1

R1

R1

R3

R3

R3

R 2

R 2

R 2

R 2

R 2

R 2

R1x

R1x

R1x

R1x

R1x

R1x

R3

R3

R3

R1

R1

R1

R1

R1

R1

R3

R4

R3

R4

R3

R4

R4

R4x

R4

R4x

R4

R4x

R4x

R3

R4x

R3

R4x

R3

R1x

R1x

R1x

R1x

R1x

R1x

R1 R4 R4x R3 R1x

Typical double span arrangement indicating railand sleeve positions.

Consideration must be given to the handlingof longer lengths.

Zed Sleeved Side Rail SystemDetailing

Zed

Slee

ved

Side

Rai

l Sys

tem

Det

ailin

g

31Load Tables -65 68

CENTRE LINE OF COLUMNS

OVERALL LENGTH

CENTRE LINE OF COLUMNS

WIDE FLANGE WIDE FLANGE

NARROW FLANGE

CENTRE LINE OF COLUMNS CENTRE LINE OF COLUMNS

WIDE FLANGE

NARROW FLANGE

CENTRE LINE OF COLUMNS

WIDE FLANGE

WIDE FLANGE

WIDE FLANGE

NARROW FLANGE

NARROW FLANGE NARROW FLANGE

NARROW FLANGE

WIDE FLANGEWIDE FLANGE WIDE FLANGE

3 3

3232D D

32 32D D

C AB

C A

EF

3 32 D D D3232

3 32 D 3 3

3333

R1 and R1X (opposite hand)

R2

R3

R4 and R4X (opposite hand)

E

VARIABLE OVERHANG

General Detailing Information

All web holes 18mm diameter forM16 bolts.

All dimensions in millimetres.

Clearance between rails at all jointsis 6mm.

All holes are pierced in pairs onstandard gauge lines.

F

50

50

50

50

50

60

60

G

614

714

834

954

1054

1354

1654

E

44

44

44

44

44

55

55

D

240

290

350

410

460

610

760

C

56

86

116

146

176

195

235

B

42

42

42

42

42

52

52

A

142

172

202

232

262

302

342

SLEEVED SYSTEMDetailing Dimensions in mm

70

70

G

70

* SIDE RAIL SUPPORTHOLES AS NECESSARY.

8 hole sleeve for 232 seriesand above, all others6 hole sleeve

*

* *

*

*

Zed ButtSide Rail System

Zed

Butt

Side

Rai

l Sys

tem

32

Side Rails - Zed Profile Butt System suitable forbuildings with single bays or more.

The Butt System offers a simple cleat connection and isintended for smaller buildings, short or uneven span orlight loading conditions.

This system can cater for single bays, therefore can be used in conjunction with other systems detailed in thisbrochure, or as a system in its own right.

The Butt system caters for spans up to 15m dependingon the load to be applied and where the cladding orliner tray offers adequate lateral support by virtue ofits fixing, ie fixed according to the claddingmanufacturers instructions.

For full cleat details see page 52.

Computer controlled production techniques applythe clients individual mark numbers to all railsautomatically during the manufacturing process.

R1

R1

R1

R1

R1

R1

R1

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R2

R1x

R1x

R1x

R1x

R1x

R1x

R1x

Typical single span indicating the rail position

Single Span Layout

Single span lengths plus a variable overhang at each end.

General Detailing Information

All web holes 18mm diameter for M16 bolts.

All dimensions in millimetres.

Clearance between rails at all joints is 6mm.

End fixing holes are supplied as shown, other 18mmdiameter holes which may be required are normallypierced in pairs on standard gauge lines.

70

SINGLE SPAN33

F

OVERALL LENGTH

A C

B

OVERALL LENGTH32 32

CL CLCL

R1 and R1X (opposite hand) R2

* SIDE RAIL SUPPORT HOLESAS NECESSARY

C

56

86

116

146

176

195

235

B

42

42

42

42

42

52

52

F

50

50

50

50

50

60

60

A

142

172

202

232

262

302

342

BUTT SYSTEM DetailingDims in mm

Load Tables -69 71

* *

Vertical CladdingRestraint Requirements

Verti

cal C

ladd

ing

Rest

rain

t Req

uire

men

ts

33

Side Rail systems can be supported by the inclusionof diagonal tie wires or suspended from a suitableeaves beam as shown.

Recommended sequence of Erection:-1. Fix bottom rail (R1) and sleeves if required.

2. Provide temporary props () to ensure a levelline is achieved.

3 Fix second rail (R2) and sleeves if required.

4 Fix side rail supports and diagonal tie wiresbetween R1 & R2 to ensure a level line isachieved to both rails.

Temporary props () may now be removed unlesssupport is solely taken from the eaves beam.

5. Fix the remaining rails and side rail supportsprogressively up the side of the building.

R1

R2

Eaves Beam

SRS

DTW

7.5m

max

R1

R2SRSSRS

DTW

10m

max

10m

max

2.5m

max

10.1m < SPANS 15m

6.1m < SPANS 10.1m

Additional Side Rail Supports

*Maximum heightsindicated are based ona total cladding weightof 15kg/m2 on elevation.For heavier claddingsthe maximum heightmay be derived on apro-rata basis.

**In all cases if theheight to eaves exceedsthe maximumrecommended height,additional tie wiresmust be included asshown.

Stiffener Cleatpage 21

If the diagonal tie wireangle falls below 25o,additional side railsupports should beincluded.

>25o

Vertical CladdingRestraint Fixing Details

Verti

cal C

ladd

ing

Rest

rain

t Fix

ing

Deta

ils

34

Metsec diagonal tie wires provide significant benefitsin terms of both drawing office detailing and siteerection time. They are delivered fully assembled toavoid the possibility of lost items on site. The assembly isprotected by galvanising and is provided with adjustableends for easy erection. To enable length of diagonal tiewire to be determined, the depth between rails (B) andthe distance between rail holes (A) must be given.Metsec will ensure the correct length is supplied.

A 70 70

DTW DTW

V1

35 35SPAN - 105

2

A

COLUMN CENTRES(SPAN)

(SPAN)

(SPAN)

COLUMN CENTRES

COLUMN CENTRES

B (Rail Crs)

Holes incleat

Holes in rails

SPAN - 1052

SRSSRSDTW DTWV2V5

Holes incleat

Holes in rails

SRS

SRSSRSSRS

DTW DTW DTW DTWV3

V6V4V7

Holes incleatHoles in rails

Holes in rails

Radial slots in the endbrackets accommodateangles between 250 and 650.

B (R

ail C

rs)

B (Rail Crs)

A35 70 70 35A

A35 7070 7070 35A A A7070

It is important that the end bracket is alwaysbolted to the cleat hole nearest the Stanchion.

3.2m < SPANS 6.1m

6.1m < SPANS 10.1m

10.1m < SPANS 15m

SPAN - 1053

SPAN - 1053

SPAN - 1054

SPAN - 1404

SPAN - 1404

SPAN - 1054

SPAN3

Vertical CladdingRestraint Fixing Details

Verti

cal C

ladd

ing

Rest

rain

t Fix

ing

Deta

ils

35

Side rail supports are bolted betweenthe lines of side rails in accordancewith the recommendations shown.

* Standard gauge lines.

Side rail supports are fully assembledfrom pre-galvanised material.

SRS denotes Side Rail Supports

DTW denotes Diagonal Tie Wires

28 28* 28 28*

Face to faceof rails

(2.5m max)

45x45x2

142-262 series 302&342 series

100M12

V1

V2

DTW DTW

To Cleat boltsnearest to column face

To Cleat boltsnearest to column face

Sheeted face

To Cleat boltsnearest to column face

SRS

SRS

Sheeted face

Sheeted face

Sheeted face Sheeted face

V3 V4

To Cleat boltsnearest to column face

B4/1

7070

V6 302 and 342 series

To Cleat boltsnearest to column face

SRS

Sheeted face

V5 302 and 342 series

To Cleat boltsnearest to column face

Sheeted face

V7 302 and 342 series

SRS

DTWDTW

DTWDTW

DTW

DTWDTW

DTWDTW

DTW

SRS SRS

SRS

70 70

7070 70 70 70

70 7070

Horizontal CladdingArrangements & Restraints

Horiz

onta

l Cla

ddin

g Ar

rang

emen

ts &

Res

train

ts

Rail alignment and cladding supportprovided by steelwork contractor

36

10m

max

3.2m < SPANS 6.1m

6.1m < SPANS 10.1m 10.1m < SPANS 15m

C Section Side Rails

C Section Side RailsC Section Side Rails

DTW

C-Sectionas vertical

support

C-Sectionor PJR

as verticalsupport

>25o

>25o

>25oDTW

DTW

= =

= = =

= = = =

C-Sectionor PJR

as verticalsupport

10m

max

7.5m

max

3.5m

max

3.5m

max

In order to achieve the alignment tolerances asssociatedwith some horizontal cladding systems it is recommendedthat C-Section side rails are used in conjunction withHorizontal Cladding Support (HCS) or Panel Joint Rail(PJR) as vertical supports.

The maximum spacing of vertical supports to horizontalpanels is shown and is necessary to provide adequaterestraint to the rails. If this cannot be achieved thenplease refer to Metsec for advice.

Sequence of erection of the side rails, side rail supportsand diagonal tie restraints similar to therecommendations shown on pages 33 to 35 inclusive.

HORIZONTAL CLADDING SUPPORT (HCS)with rivetted end cleats

*

* *

*Maximum heights indicated are based on a totalcladding weight of 15kg/m2 on elevation.For heavier claddings the maximum height maybe derived on a pro-rata basis.

Horiz

onta

l Cla

ddin

g Pa

nel S

uppo

rt De

tails

37

C-SECTIONINTERMEDIATE SUPPORT TO PANEL

PJR SUPPORT AT JOINT IN PANEL

142

120

140CLADDING FACE

56

13

18

64

18

For economy it is recommended that Metsec HorizontalCladding Support (HCS) with riveted end cleats areused as vertical supports to the horizontal claddingpanels.

Joints in panels may require a wider flange for fixingpurposes which can be provided by using a MetsecPanel Joint Rail (PJR).

Alignment of the steel face can easily be achieved byadjustment of the horizontal rails on slotted cleats atstanchion positions.

Metsec have carried out comprehensive testing atStrathclyde University to verify the adequacy of thistype of support without slip under the required load.

See page 38 for test results.

Horizontal CladdingPanel Support Details

13

PANEL JOINT RAIL (PJR)with rivetted end cleats

SPAN(Rail Crs.) Pressure Suction Deflectionm Span/150

1.6 19.67 13.15 33.36

1.8 17.48 11.68 26.36

2.0 15.74 10.52 21.35

2.2 14.30 9.56 17.64

2.4 13.11 8.76 14.82

2.6 18.07 9.93 15.51

2.8 16.78 9.22 13.37

3.0 15.66 8.61 11.65

3.2 14.68 8.07 10.24

3.4 13.82 7.59 9.07

3.6 13.05 7.17 8.09

SAFE WORKING LOADS (kN)ON PJR AND HCS

PJR gauge up to 2.5m span = 1.6mm, otherwise 2.0mm.

Horiz

onta

l Cla

ddin

g Al

ignm

ent

38

Tighter tolerances are associated with some of thehorizontal cladding systems in todays market.These tolerances can be achieved by using MetsecC-Section rails supported on cleats with slotted holes.

Metsec have carried out comprehensive testing atStrathclyde University to support the use of slottedcleats without slip under the required loads.The recommended torque on a Grade 8.8 bolt is 244Nm.The results of these tests are shown in the table belowand are applicable to Metsec components.

Rail Max wind Dimensions forseries Load required Test Load Torque Detailing (mm)

(kN) (kN) (Nm) D1 D2

142 34.3 45 100 150 56172 45.3 52.5 125 180 86202 49.3 52.5 125 210 116232 52.3 60 150 240 146262 68.3 75 200 270 176302 74.4 82.5 225 310 195342 90.3 90 250 350 235

NB The use of Zed Section rails will reduce the maximum

allowable alignment permitted.

Slotted Cleats by others or to special order

Cleat reduced to clearflange/internal radius

302 & 342 SERIES

142 TO 262 SERIES

Nominal Cladding Face

Nominal Cladding Face

D273

D1

27ALIGNMENT

SLOTSSLOTS

18 ALIGNMENTD1

59 D2

36(x18)

SLOTS PERMITTED

45(x18)

SLOTS PERMITTED

COLUMN FACE

COLUMN FACE

CL CL

SLOTSCL SLOTSCL

Horizontal Cladding Alignment

Horiz

onta

l Cla

ddin

g Pa

nel J

oint

Rai

l Opt

ions

Horizontal CladdingPanel Joint Rail Options

39

NB The panel Joint Rail options shown are basedon a maximum panel length of 6m (longer panellengths are available). The details provided arefor guidance only and are intended to demonstratethe main principles which should be adopted.For simplicity, panels and column centres shouldbe compatible as shown.

Option 1 preferredPanel joints at columnlocations. C-Sectionsupport / restraint atmid span.

BA = SPAN - 135

2B = RAIL CRS

PJR C-SECTION PJR

3.2m < SPAN 6mCENTRES OF COLUMNS

A35 100 100 A 35 3535

Sheeted face

TOP CLEAT BOTTOM CLEAT

Sheeted face Sheeted face

Option 2Panel joints at mid span,C-Section suppports atcolumn locations ifrequired or otherwiseomit.B

C-SECTION C-SECTION

3.2m < SPAN 6m

A35 35 100 100 A 35 35

Sheeted face Sheeted face

CL PJR & COLUMN CL PJR & COLUMN

CENTRES OF COLUMNS

To Cleat boltsnearest to column face

To Cleat boltsnearest to column face

To Cleat boltsnearest to column face

To Cleat boltsnearest to column face

CL PJR & JOINT IN PANELS

* This detail cannot be used in conjunction withMetsecs standard BOC or WOC cleats

* *

A = SPAN - 1352

B = RAIL CRS

Horizontal CladdingPanel Joint Rail Options

40

PJR C-SECTIONC-SECTION

PJR C-SECTION PJR

6.0m < SPAN 12m

A335 100 100 A4 100 100

B

35

6.0m < SPAN 12m

A335 100 A4 100 10035

Sheeted face Sheeted face

Option 3Panel joints at 1/3 span and alternate column locations.C-Section support/restraint at 1/3 span. C-Sectionsupport at column if required or otherwise omit.

Horiz

onta

l Cla

ddin

g Pa

nel J

oint

Rai

l Opt

ions

C-SECTIONC-SECTION PJRPJR

6m < SPAN 9m

A135 100 A2CENTRES OF COLUMNS

CENTRES OF COLUMNS

CENTRES OF COLUMNS

A1100 353535

Sheeted face

Sheeted face

Sheeted face

Sheeted face Sheeted face Sheeted face

B

B

TOP CLEAT

To Cleat boltsnearest to column face

TOP CLEAT

To Cleat boltsnearest to column face

To Cleat boltsnearest to column face

NB The panel Joint Rail options shown are based on amaximum panel length of 6m (longer panel lengths areavailable). The details provided are for guidance only

100

* See notepage 39

*

A1 = SPAN - 1353

A2 = SPAN3

B = RAIL CRS

Horizontal CladdingPanel Joint Rail Options

Horiz

onta

l Cla

ddin

g Pa

nel J

oint

Rai

l Opt

ions

41

PJR C-SECTION

C-SECTION PJR

A4 A3 35 35100 100

Option 5 preferredPanel joints at midspan andat column locations.C-Section supports/restraintsat 1/4 points on span.

Option 6Panel joints at 1/4 span.C-Section supports/restraintsat midspan.C-Section supportat columns if requiredor otherwise omit.

A4 A3100100 3535

Option 4Panel joints at 1/3 span and alternate column locations.C-Section support/restraint at 1/3 span. C-Sectionsupport at column if required or otherwise omit.

C-SECTION PJR C-SECTION PJR

CENTRES OF COLUMNS

6m < SPAN 9m

A135 100 A2 A1100 353535

Sheeted face Sheeted face

B

To Cleat boltsnearest to column face

and are intended to demonstrate the main principleswhich should be adopted. For simplicity, panels andcolumn centres should be compatible as shown.

BOTTOM CLEAT

Sheeted face

*

*

A1 = SPAN - 1353

A2 = SPAN3

B = RAIL CRS

A3 = SPAN - 1354

A4 = SPAN - 2004

B = RAIL CRS

A3 = SPAN - 1354

A4 = SPAN - 2004

B = RAIL CRS

Horizontal CladdingArrangements & Restraints

Horiz

onta

l Cla

ddin

g Ar

rang

emen

ts &

Res

train

ts

42

Rail alignment by steelwork contractor.Cladding support provided by sheetingcontractor

Vertical top hat sections supplied and fixed to the siderails by sheeting contractor.

NB It is reccommended that top hats are positionedclose to the vertical side rail supports to avoid unduetwisting of the rails with some of the heavier claddingsystems.

Fixing and erection of the side rails, side rail supportsand diagonal tie restraints in accordance with therecommendations shown on pages 33 to 35 inclusive.

SRS

TOP HATS

3.2m < SPANS 6.1m

C Section Side Rails

6.1m < SPANS 10.1m

C Section Side Rails

10.1m < SPANS 15m

C Section Side Rails

Top hats fixedto horizontal side railsby sheeting contractor

C-Section Side Rails

Side Rail Support

DTW

TOP HATS

TOP HATS

SRS SRS

SRS SRS SRS

Parapet Posts

Para

pet P

osts

43

Parapet Posts can beconstructed from backto back C-Sections toform a compoundmember complete withall cleats.

Supplied as singlecomponents for on-siteassembly before liftinginto position. C-Sectioncompound parapetposts offer significantcost savings againstconventional hot rolledsteelwork.

Parapet posts are fixeddirectly to the columns,with 8mm stand offpacks to maintain thesheeting line.

All necessary sheetingrails can be connectedto the parapet post byusing standard insetrail cleats fitted to thecompound section priorto lifting into position.

For further guidanceon the use andapplications ofC-Section parapet postsplease consult ourdesign department.

X

Purlins

MetsecColumn Ties

Pre-assembledparapet post

bolted directly tocolumn flange

Compound Parapet Postwith fitted cleats

Rails

Inset Rail Cleat

InsetRail Cleat

StiffenerCleat

View on X

Verticalslots in

cleat onlyto facilitateassembly

Y

Purlins

MetsecColumn Ties

Compound Parapet Post

Rails

Inset Rail Cleat

InsetRail Cleat

Columnwebplates(byOthers)

Packer Plates(by Others)

Column webplates

(by Others)

View on Y

PRE-ASSEMBLED (BY OTHERS)

INSITU ASSEMBLY

Window TrimmersW

indo

w T

rimm

ers

44

Used in conjunction with C-Section side rails, C-Sectionwindow trimmers provide the necessary surface fixingsfor windows, claddings and associated flashings.The window trimmer should ideally be of the samedepth as the main supporting rail and be connectedusing standard trimmer cleats. Counterformed holesprovide the necessary unobstructed fixing surface.

HeadRail

Cill Rail

Diagonal Tie wire

C-Section vertical strutbelow window

(Detail 2)

Full depth C-Section jamb(Detail 1)

Section on A - A

C-Section Rail

CounterformedHoles

Trimmer cleat

Cladding by others

StandardPacking Plate

C-Section vertical jamb

The sketch shows a complex arrangement of windows within a wallelevation, and illustrates how each bank of windows requires a systemof diagonal tie bracings in combination with vertical C-section struts.

Pre-fixed cleats on lengthsup to 2.5m

100 C 12C-Section strut

Counterformed Holes

HorizontalCladding Rail

Standard TrimmerCleat to suit

compatible SideRail and

C-Section strut

Jamb Connection(Detail 1)

Strut Connection(Detail 2)

Standard Packing Plate

C-Section Rails

A A

Door Posts

Door

Pos

ts

45

C-Section Door Post

Zed Profileor C-Section Side Rails

A A

C-Section Door Header

Metsec C-Sections can be used to provide trimmingto personnel doors.

C-Sections are connected to the framework ofthe cladding rail system using compatible depths of sections, and standard trimmer cleats.

The use of counterformed holes provide anunobstructive surface for the fixing of door jambor head rails.

Head Rail Connection

C-Section Cladding railscan be used toeingup or down

Vertical C-SectionStandard Trimming Cleat

View on A-ACounterformed HolesDoor Jambs

by others

Metsec Z or C-Section Side Rails

Vertical Door Post, same seriesas supporting side rail

Standard Packing Plate

Trimmer Cleat

Front Elevation

Firewall Restraint SystemDetails

Fire

wal

l Res

train

t Sys

tem

Det

ails

46

Length of rail

Special cleatwith slots

Standard Cleatplus sleeve (Clamped)

Special Cleatwith slots

Length of rail

Expansion Mode Expansion Mode

Even bay sleeved arrangement Single bay Butt arrangement

Standardcleat

End column

Special Cleatwith slots

Metsec Zed & C-Section Side Rail Systems combined with the appropriate fire resistance wall cladding systemhave performed satisfactorily in fire tests up to 4 hoursduration. The period of fire resistance is dependantupon the construction and materials used in the firewall cladding, therefore certification for the fireresistance period should be obtained from the claddingsupplier. Accessories and column stays need no facilityfor expansion and are supplied as standard items.

In isolation, the Eaves beam is part of the roof systemand therefore need not be fire protected, however, if therail system is suspended from this beam then it formspart of the rail system and requires fire protection.

The end bay, grids (5) to (6) is designed as a buttsystem keeping the depth of section similar to the restbut increasing the gauge to maintain rail centres.

The philosophy of rail expansion under fire, is thatwith the sleeved system the rail is locked at the sleevedposition and expansion occurs to the left and to theright of this connection into the slotted position andexpansion occurs to the left and to the right of thisconnection into the slotted cleats. Whereas with the butt system one side is locked and the free end isallowed to expand into the slotted cleat.

Utilising the standard slotted cleat detail, the rail lengthfor both systems equates to the distance of column tocolumn less 35mm. When cleating, clearance betweenends of rails should be increased to allow for expansionof the corresponding system, as shown.

Slotted Cleat Detail

The side rail to be used should be selected from theSleeved Rail load tables on pages 65-68

The side rail to be used should be selected from theButt Rail load tables on pages 69-71

30 32 35 26

CL

Standard gauge lines

50 (x18)Slot

3 2 3 2 3 1

Firewall Connection Arrangement1 2 3 4 5 6

CONNECTION DETAILS1 Standard Butt Connection2 Standard Sleeve Connection (Sleeve Arrangement is not to be staggered)3 Butt Connection with slotted holes in cleats (see slotted cleat detail).

Under fire conditions the rails expand. To achieve thenecessary movement the column fixing cleat should beslotted longitudinally. All fixing bolts should be fitted withcombustible washers which collapse under heat, thusloosening the bolts and allowing expansion. This reducesdistortion and buckling of the rail, ensuring integrity of thewall construction.

The diagrams illustrate an odd bay arrangementof rails for a fire wall. Grids (1) to (5) are designed assleeved systems with the sleeves and standard cleatspositioned on the same column lines, simplifying detailingand keeping one type of cleat on each column. The slottedcleats are positioned at alternate columns.

Steel Washer

Slotted holes

Combustible Washer

Rail

M16 Bolt

Steel Washer

Sheeting Posts

Shee

ting

Post

s

47

Gable Rafter

End Cleat byFabricator

Inset RailConnection

28 28

28

Restraint Stay Holes 18mm

45 x45 x 2 Restraint

Stay

The MetSPEC design software can be used to select these sections. Capacities have been derived by calculation in accordancewith BS 5950 Part 5.

Compound back to back C Sections areused for these members as shown.

To make compound, the sections are connected together in the web with pairs ofbolts (washer under bolt head and nut) atspacings along the sections as stated in the program with all bolts on standard webgauge lines.

The post must be adequately fixed to the main structure at the top and bottom toprovide an effective height factor of 0.85H.Connection at the ends to be via 2 or 4 boltsin web on standard web gauge lines.

The fabricator should ensure that the endbracket supporting the sections is suitablefor the load to be carried. Restraint staysmay be required, the spacings of these is asdetermined by the MetSPEC Software.

All fixing bolts are to be M16 Grade 8.8plated bolts complete with washers.

N.B. Maximum capacity is achieved usinga washer under both bolt head and nut forconnection of the sections to the supportsat ends, the Software allows for a choiceof one or two washers per nut/boltcombination.

65

40 25

25

25

3060

30Restraint

Stay Cleat

Holes 18mm

AA

B B

C C

Detail showing side rail connection to the outer flangeof the compound sheeting post

StayCleat 40

Gable Rafter

End Cleat by Fabricator2 or 4 bolts connection tosuit design specification

MetsecCompoundGable Post

Metsec Rails

Cleader Angle

Metsec Zed Purlin

Wind BracingW

ind

Brac

ing

48

Suggested cleat connection detail (roof bracing)

C-Section Tension member

Compound C-Section Compression member

Typical arrangement for C-Section Compressionand Tension Wind Bracing members

Typical End Bays Plan on Roof

Compound Compression Members

Tension Members

Optional Tension Members

CL CL

Tension Members may be single or back to back C-Sections

Metsec C-Sections can be used for applications whereaxial tension or compression loads are to be carried,The MetSPEC Design Software can be used to selectthese sections.

Capacities have been derived by calculation inaccordance with BS 5950 part 5.

The capacities are for axial compression or tensionloads only and do not take into account bendingmoments other than those due to self weight or endconnection eccentricity, (i.e. gutters etc to be supportedon other members). Connection of sections to supportbrackets at the ends must be via the web.

Back to back compound C-Sections are used for allcompression loads. Compound sections are connectedwith pairs of bolts (washer under bolt head and nut) on standard web gauge lines equally spaced asdetermined by the MetSPEC Software.

Tension load capacities are for single or back to backmembers all connected at ends to supports via the web.

The fabricator should ensure that the gusset or endbracket supporting the sections is suitable for the loadcarried. All fixing bolts are to be M16 grade 8.8 platedbolts complete with washers.

NB:- Maximum capacity is achieved with a washerunder both nut and bolt head, a reduction in capacityis involved if only one washer is used. End connectionbolts to support brackets are in pairs on standard webgauge lines, the Software gives a choice of two orfour bolts.

Side Elevation

Lightweight Access Walkways

Ligh

twei

ght A

cces

s W

alkw

ays

49

Lightweight Access Walkways constructed with Metseccomponents have been used on many internalapplications offering the advantages of less weightand ease of erection in areas of limited access as thecomponents can be delivered ready for assembly.

The main span beams consist of C-sections with lateralmembers giving torsional restraint at handrailstandard positions which must be cleated off the websof the C-s as illustrated.

Note:- For guidance on C-section sizes, contact theMetsec Purlin Design Office.

Flooring and handrails by others

Horizontal C-section strutsat handrail standard positions

LongitudinalC-sections

Hot Rolled Cleats to beam

DETAIL AT SUPPORT

DETAIL WITHIN SPAN

Services SupportsSe

rvic

es S

uppo

rts

50

There are many different types of services support clipsavailable in todays market. When fixing either to Zedprofile or C profile sections, the most common types andapplication are shown in the diagrams.

The maximum recommended safe working loads givenin the table below are intended for guidance only. Theyare for roof pitches less than 12o and will be conservativefor some of the more innovative or heavy duty clipsavailable. Please refer to the clip manufacturer foradvice.

NB Beware of published clip load capacities as thesemay be for the clip only. Unacceptable movement of thepurlin flange particularly on steep slopes may cause slipor failure of the fixings.

An equivalent service load used for the design of thepurlins may be calculated as follows:-

Point loads from services = 25kg at 1.2m spacing

Purlin centres = 1.8m

Equivalent service load = 25 x 9.81 x 10-3= 0.114kN/m2

1.2 x 1.8

By using a Metstrut channel fixed between purlin lines,loads can be evenly distributed as shown in detail D.

C-Section Trimming DetailUsing standard gauge line holes, a channel or angletrimmer can be fitted and used to carry heavier or largepieces o