Client Name: Mr S Sample Site Address: Sample Address Sample Street Proposed Works: Beam Calculation for Removal of External Wall into Existing Extension Prepared and Completed by: Simon Helm 19 th December 2019
Client Name: Mr S Sample
Site Address:
Sample Address Sample Street
Proposed Works: Beam Calculation for Removal of External Wall
into Existing Extension
Prepared and Completed by: Simon Helm
19th December 2019
Project
Removal of External Wall
Project number
BRO191219 - Sample
Calcs for
Sample
Date
19th December 2019
Steel Beam Calculation
Existing External wall to Existing Single Storey Kitchen Extension
Beam details305 x 165 x 54 UB S275Beam effective span length: 5.1 metres
Width: 166.9 mmDepth: 310.4 mmWeb: 7.9 mmFlange: 13.7 mmRadius: 8.9 mmMass per metre: 54 kg/m
Project
Removal of External Wall
Project number
BRO191219 - Sample
Calcs for
Sample
Date
19th December 2019
Safety factors, restraints & deflection limitsPermanent load safety factor: 1.35Variable load safety factor: 1.5
Beam is fully restrained along its length: NoLength between lateral restraints: 5.1 metres
Variable load deflection limit: Span/360 = 14.17 mmTotal load deflection limit: Span/200 = 25.5 mm
Load details
UDL 1: Timber floor (domestic dwelling)
Permanent (dead) load per square metre: 0.6 kN/m2
Variable (live) load per square metre: 1.5 kN/m2
Width of load perpendicular to beam, or height of load supported by beam: 6 metres
UDL 2: 225mm Brickwork + Plaster or render on BOTH sides
Permanent (dead) load per square metre: 4.9 kN/m2
Variable (live) load per square metre: 0 kN/m2
Width of load perpendicular to beam, or height of load supported by beam: 2.6 metres
UDL 3: Ceiling beneath sloping roof
Permanent (dead) load per square metre: 0.3 kN/m2
Variable (live) load per square metre: 0.25 kN/m2
Width of load perpendicular to beam, or height of load supported by beam: 2.5 metres
UDL 4: Sloping roof, 0° to 30°
Permanent (dead) load per square metre: 1.15 kN/m2
Variable (live) load per square metre: 0.75 kN/m2
Width of load perpendicular to beam, or height of load supported by beam: 2.5 metres
Project
Removal of External Wall
Project number
BRO191219 - Sample
Calcs for
Sample
Date
19th December 2019
CalculationsBending momentsMc,y = 233kNm > 146.04kNm, Therefore OKMc,y value from Tata Steel 'blue book' to BS EN 1993-1-1Mb = 151.1kNm > 146.04kNm, Therefore OKMb value INTERPOLATED from Tata Steel 'Blue Book' to BSEN 1993-1-1C1 value conservatively taken as 1.0
Shear forcesShear capacity Vc = 422kN x 0.5 = 211kN >114.54kN, Therefore OKShear Capacity, Vc from Tata Steel 'Blue Book' to BS EN1993 -1-1Reduction of moment resistance by high coincident shearforce has been avoided by checking that the shear force isno more than 50% of the shear resistance
DeflectionVariable load deflection = 4.12mm < 14.17mm,Therefore OKTotal load deflection = 11.47mm < 25.5mm,Therefore OK
Notes
Mc,y value from Tata Steel 'Blue Book' to BS EN 1993-1-1
Mb value interpolated from Tata Steel 'Blue Book' to BS EN 1993-1-1
C1 value conservatively taken as 1.0
Shear Capacity, Vc from Tata Steel 'Blue Book' to BS EN 1993-1-1
Reduction of moment resistance by high coincident shear force has been avoided by checking that the shear force is notmore than 50% of the shear resistance
Ends of beam are to be laterally restrained. Ends of beams can be laterally restrained using one of the following methods;
1) End of beam built into masonry wall.2) End of beam fixed to a masonry wall.3) End of beam fixed to a column or a beam.
The designer is to ensure that the proposed detail adequately ensures that the end of the beam is laterally restrained.
No allowance has been made for destabilising loads which are outside the scope of these calculations (Destabilising loadswould not normally occur in a traditional masonry structure)
Prepared and completed by: Simon Helm - Please note all measurements to be checked on site!
660
280
Padstone Position
Steel Beam x 2 305 x 165 x 54
Bolted @ 600mm ctrsusing M12 bolts
300
248
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Date
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ClientLast Revised
Job No
Status: P Preliminary T Tender C Construction
Drg No
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19/12/2019 11:01:58
RemovalExternal Wall
Sample Calcs19th Dec 19
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Section 1 - Callout 1 - Sample Calcs1
1
Section Call Out - Detail
2600
2700
2100
Timber Floor
First Floor
Ground Floor
Existing Extension
Floor Void
Assumed Foundations
Timber Floor
Victorian Style HouseWall Thickness 225mm
No Cavity
By
Date
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ClientLast Revised
Job No
Status: P Preliminary T Tender C Construction
Drg No
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Status
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19/12/2019 11:01:58
RemovalExternal Wall
Sample Calcs19th Dec 19
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Section 11
4753
4600
248
1953
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Date
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ClientLast Revised
Job No
Status: P Preliminary T Tender C Construction
Drg No
Sheet No
Rev
Status
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19/12/2019 11:08:15
RemovalExternal Wall
Sample Calcs19th Dec 19
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Ground Floor Plan1
C 19th Dec 19
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Sample Calcs 1 1
Fitting Diagrams - RSJ Covers
RSJ
RSJ blocked and boarded
RSJ blocked and boarded with beam cover fixed
to wooden blocks
1.
2.
3.
Plasterboard
Timber Block
Product Code – BEAMLIFT
Product Description – 600 KG BEAM LIFTER
The Beam lifter (600KG) is a simpler and more robust device than all of its competitors. No
cables or guides just a simple screw mechanism which is similar to the acrow prop operation
can be wound up to required height. It is a compact detachable elevator on wheels for lifting
and fitting heavy loads such as steel beams.
Lifting capacity 600 kg. Maximum lifting height 3 m.
High precision by using screw thread adjustment.
Fully detachable and easy to build up.
Uses two elevators for fitting beams.
Rotational platform
Crane hook to lift loads from the ground.
1 year warranty