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CrossLamTM by Structurlam

CrossLamDesign Guide

Cross Laminated Timbers have been manufactured in Europe for more than 10 years and are now being used throughout Europe for floors, walls and ceilings. Structurlam has created it’s own line of cross laminated timbers called CrossLam. CrossLam has 3, 5, 7 or more layers of dimensional softwood lumber stacked on one another at right angles and glued together in a press, over their entire surface area. The size of the panel is limited by the size of the press allowing Structurlam to manufacture panels up to 12 metres long by 3 metres wide.

The purpose of this guide is to provide technical information to allow architects and engineers to specify CrossLam. Should your project require wall panels, Structurlam can provide a fully engineered CrossLam solution.

Intro

Introduction 02Carbon Footprint 02Benefits of CrossLam 03Panel Characteristics 04Technical Approvals 04Span Tables 05-07

Table of contents

Carbon FootprintThe environmental benefits of CrossLam speak for themselves. Because CrossLam is made of wood, it possess a number of inherent positive environmental characteristics common to all wood products. These include carbon storage, less manufacturing greenhouse gas emissions than non-wood materials, and an overall lighter environmental footprint than non-woodmaterials, according to life cycle assessment studies.

Benefits of CrossLamStructurlam’s CrossLam has all the advantages of prefabricated buildings plus some distinctive features and benefits.

State-of-the-art-facility:• Structurlam has invested in the world’s best technology to produce CrossLam. This allows us to efficiently produce large volumes of world class, third party certified structural panels. Sizematters:• Structurlam has invested in a large commercial press that can produce panels that are up to 3.0 m x 12.2 m (10’ x 40’) and up to 309 mm (12.2”) deep.Accuracyandaesthetics:• With the installation of the Rex Big Master planer, Structurlam can finish smooth all 4 sides. This ensures a perfect fit and the option to expose panel surfaces. This is combined with our large panel CNC machining capability to frame any requirements. Fullyengineeredsolution:• The team at Structurlam can provide you with a fully engineered design solution including floors, roof, walls and all connection details. It is a key component to the service we provide our customers.Installation:• We can install any size of project.Environmentallyfriendlyresins:• Polyurethane resin is formaldehyde and colour free.

CrossLam vs. other Building MaterialsLightweight: up to 6 times lighter than concrete.•Cost competitive against steel and concrete.•Negative carbon footprint.•CrossLam can be used jointly with other material such as steel or concrete, •heavy timbers, and light wood frame. Rapid construction time: CrossLam reduces construction time. •Skilled labour benefits: The erection of the structure mostly requires carpentry •skills and power tools.Material savings: 1/3 thinner than concrete. •

FLOOR SLAB COMPARISON CROSSLAM VS. CONCRETE

MAX SPANS

(m)

CrossLam PANEL

THICKNESS (mm)

SLAB THICKNESS REQUIRED

(mm)

RATIO CLT/CONC THICKNESS

(%)

VIBRATION CONTROLLED

SPAN (m)

CONCRETE SLAB ONE END CONT

dx24 (m)

SLT3 99 150 66 3.5 2.4SLT5 169 200 85 4.9 4.1

SLT7 239 260 92 6.2 5.8SLT9 309 310 100 7.4 7.4

Text in red indicates CrossLam thickness advantage.

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Panel Layouts

Max Panel Size 3.0m x 12.2m (10.0’ X 40.0’)Max Thickness 309 mm Production Widths 1.2 m & 2.4 m (4.0’ X 8.0’)Moisture Content 12% (+/-2%) at time of productionGlue Specifications Purebond polyurethane adhesiveWood Species SPF No.1/No.2, other species available upon requestSurface Qualities Planed 4 sides Squareness Panel face diagonals shall not differ by more than 3.2mmStraightness Deviation of edges from a straight line between adjacent panel corners shall not exceed 1.6 mmDimensional Tolerances Thickness: +/- 1.6mm (1/16 in) or 2% of the CrossLam thickness whichever is greater Width: +/- 1.6 mm (1/16 in) per foot (305 mm) of CrossLam width Length: +/- 3.2 mm (1/8 in) up to 6100 mm (20 ft) and +/- 3.2 mm (1/8 in) for each additional 6100 mm (20 ft) in length

Panel Characteristics

Name Layers Depth (mm)

Inner Lams (mm)

Outer Lams (mm)

SLT3 3 layers 99 inner lams 35 outer lams 32SLT5 5 layers 169 inner lams 35 outer lams 32SLT7 7 layers 239 inner lams 35 outer lams 32SLT9 9 layers 309 inner lams 35 outer lams 32

Technical Approvals CrossLam meets the requirements of the following standards:

CLT Plant Qualification Standard – draft- by FPInnovations• Standard for Performance Rated CLT ANSI/APA PRG 320 – draft – by APA•

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Notes: 1. Material is S-P-F No.1/No.2 for all laminations. 2. Outer laminations are 32mm thick; inner laminations are 35mm thick. 3. Specified modulus of elasticity and strength in major strength direction: E0 = 9500 MPa; fb,0 = 11.8 MPa; fv,0 = 1.5 MPa; fvr,0 = 0.5 MPa; fc,0 = 11.5 MPa; ft,0 = 5.5 MPa (ref: Table 5.3.1A of CSA-O86-09). 4. Specified modulus of elasticity and strength in minor strength direction: E90 = 9500 MPa; fb,90 = 11.8 MPa; fv,90 = 1.5 MPa; fvr,90 = 0.5 MPa; (ref: Table A3 ANSI/APA PRG 320-75% Draft January 2011). 5. Dead load includes panel self-weight plus 1.0 kPa flooring load. 6. Bold text indicates span governed by vibration; regular text indicates span governed by dead plus live load deflection limit of L/300. 7. All spans are assumed to be equal for multi-span panels. 8. Spans shown represent distance between the centerlines of supports. 9. Maximum spans shown are only to be used for preliminary design. 10. Engineer to ensure that L/300 deflection limit is appropriate for intended use. 11. The following factors were used for calculations: KD = 1.0; KS = 1.0; KT = 1.0; KH = 1.0.

CrossLam Floor Panel Load TableMAX. SPAN (mm) FLOOR LIVE LOAD (kPa, unfactored)

PANEL TYPE

SIZE (mm)

1.9

RESIDENTIAL

2.4OFFICE/

CLASSROOM

3.6MECHANICAL

ROOM

4.8ASSEMBLY/STORAGE

7.2

LIBRARY

SLT3 99 3490 3490 3220 2980 2650

SLT5 169 4920 4920 4920 4730 4220

SLT7 239 6200 6200 6200 6200 5720

SLT9 309 7370 7370 7370 7370 7180

SLT3 99 3700 3700 3650 3350 2920

SLT5 169 5150 5150 5150 5150 4650

SLT7 239 6500 6500 6500 6500 6350

SLT9 309 7800 7800 7800 7800 7800SLT3 99 3725 3725 3500 3220 2850

SLT5 169 5250 5250 5250 5100 4500

SLT7 239 6550 6550 6550 6550 6150

SLT9 309 7825 7825 7825 7825 7750trip

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CrossLam Floor Panel Load Table with 2” (50mm) Concrete ToppingMAX. SPAN (mm) FLOOR LIVE LOAD (kPa, unfactored)

PANEL TYPE

SIZE (mm)

1.9

RESIDENTIAL

2.4OFFICE/

CLASSROOM

3.6MECHANICAL

ROOM

4.8ASSEMBLY/

STORAGE

7.2

LIBRARYSLT3 99 3350 3230 2990 2800 2520

SLT5 169 4920 4920 4730 4450 4030

SLT7 239 6200 6200 6200 6020 5480

SLT9 309 7370 7370 7370 7370 6890

SLT3 99 3700 3700 3420 3180 2820

SLT5 169 5150 5150 5150 5050 4500

SLT7 239 6500 6500 6500 6500 6150

SLT9 309 7800 7800 7800 7800 7700

SLT3 99 3725 3600 3300 3070 2740

SLT5 169 5250 5250 5200 4860 4360

SLT7 239 6550 6550 6550 6550 5940

SLT9 309 7825 7825 7825 7825 7450

Notes: 1. Material is S-P-F No.1/No.2 for all laminations. 2. Outer laminations are 32mm thick; inner laminations are 35mm thick. 3. Specified modulus of elasticity and strength in major strength direction: E0 = 9500 MPa; fb,0 = 11.8 MPa; fv,0 = 1.5 MPa; fvr,0 = 0.5 MPa; fc,0 = 11.5 MPa; ft,0 = 5.5 MPa (ref: Table 5.3.1A of CSA-O86-09). 4. Specified modulus of elasticity and strength in minor strength direction: E90 = 9500 MPa; fb,90 = 11.8 MPa; fv,90 = 1.5 MPa; fvr,90 = 0.5 MPa; (ref: Table A3 ANSI/APA PRG 320 - 75% Draft January 2011). 5. Dead load includes panel self-weight plus 1.0 kPa flooring load, and weight of 2” (50mm) normal weight concrete topping. 6. Bold text indicates span governed by vibration; regular text indicates span governed by dead plus live load deflection limit of L/300. 7. All spans are assumed to be equal for multi-span panels. 8. Spans shown represent distance between the centerlines of supports. 9. Maximum spans shown are only to be used for preliminary design. 10. Engineer to ensure that L/300 deflection limit is appropriate for intended use. 11. The following factors were used for calculations: KD = 1.0; KS = 1.0; KT = 1.0; KH = 1.0.

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Notes: 1. Material is S-P-F No.1/No.2 for all laminations. 2. Outer laminations are 32mm thick; inner laminations are 35mm thick. 3. Specified modulus of elasticity and strength in major strength direction: E0 = 9500 MPa; fb,0 = 11.8 MPa; fv,0 = 1.5 MPa; fvr,0 = 0.5 MPa; fc,0 = 11.5 MPa; ft,0 = 5.5 MPa (ref: Table 5.3.1A of CSA-O86-09). 4. Specified modulus of elasticity and strength in minor strength direction: E90 = 9500 MPa; fb,90 = 11.8 MPa; fv,90 = 1.5 MPa; fvr,90 = 0.5 MPa; (ref: Table A3 ANSI/APA PRG 320 - 75% Draft January 2011). 5. Dead load includes panel self-weight plus 0.5 kPa roofing load. 6. Maximum span is governed by dead plus snow load deflection limit of L/300. 7. All spans are assumed to be equal for multi-span panels. 8. Spans shown represent distance between the centerlines of supports. 9. Maximum spans shown are only to be used for preliminary design. 10. Engineer to ensure that L/300 deflection limit is appropriate for intended use. 11. The following factors were used for calculations: KD = 1.0; KS = 1.0; KT = 1.0; KH = 1.0. 12. Shear stiffness has been reduced by 50% to account for creep deformation. 13. Snow load is based on BCBC 2006 with the following factors: Is = 1.0 for ULS; Is = 0.9 for SLS; Cw = 1.0; CS = 1.0; Ca = 1.0

CrossLam Roof Panel Load TableMAX. SPAN (mm) ROOF SNOW LOAD (kPa, unfactored)

PANEL TYPE

SIZE(mm)

1.1

PENTICTON

1.6

VANCOUVER

2.2

NANAIMO

2.9PRINCE

GEORGE

3.3

SQUAMISH

8.5

WHISTLERSLT3 99 4450 4120 3820 3550 3420 2510

SLT5 169 6800 6360 5950 5570 5390 4050

SLT7 239 8920 8420 7920 7450 7220 5520

SLT9 309 10900 10330 9770 9230 8970 6940

SLT3 99 5400 4950 4550 4200 4050 2900

SLT5 169 8250 7650 7100 6600 6350 4650

SLT7 239 10900 10150 9450 8850 8550 6350

SLT9 309 13300 12500 11700 11000 10600 8000

SLT3 99 5160 4750 4400 4050 3900 2850

SLT5 169 7900 7300 6800 6350 6100 4550

SLT7 239 10350 9700 9100 8500 8200 6150

SLT9 309 12650 11850 11200 10550 10200 7750trip

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For more information please contact us.

www.structurlam.com