Girder depth selection enter table c35 girder

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Girder depth selection: Enter Table C35, Girder Sizes/Beam Span 35 ft, second row for 100 psf live loading. Under Girder Span: G1 (ft), third column for a 30 ft girder span. Read the range of the member sizes to be W24-W30. This indicates that the nominal girder depth could be as shallow as 24 in. for the W24 girder or as deep as 30 in. for the W30 girder. An intermediate nominal depth of 27 in. for a W27 could also be selected. Summary: 35 ft beam span: W21-W24 (note that actual depths will vary). 30 ft girder span: W24-W30 (note that actual depths will vary). Member cambers may be required (consult a structural engineer for specifics).
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SYSTEMS PAGE 80 Dead load includes system self weight (slab + steel) Superimposed dead load = 25 psf (partitions + MEP) Loads are uniformly distributed over bay area 3¼ in. lightweight concrete topping 2 in. composite metal decking 50 ksi steel yield 3 ksi concrete strength 2-hour fire rating Girder Girder Span B1 Span G1 10'-0" Max. Beam Beam Beam Beam Tables A to A40 Table A Beam Sizes Beam Span: B1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W10-W16 W14-W16 W16-W21 W18-W21 W21-W27 Office 100 W12-W16 W14-W18 W16-W24 W18-W24 W21-W27 Assembly 150 W14-W18 W18-W21 W18-W24 W21-W27 W24-W30 Storage Table A20 Girder Sizes Beam Span 20 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W16-W18 W18-W21 W21-W24 W24-W27 W24-W27 Office 100 W18-W21 W21-W24 W24-W27 W24-W30 W27-W30 Assembly 150 W21-W24 W21-W24 W24-W27 W24-W30 W30-W33 Storage
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PAGE 81 SYSTEMS Table A25 Girder Sizes Beam Span 25 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W16-W18 W16-W18 W18-W24 W21-W27 W24-W30 Office 100 W18-W21 W21-W24 W21-W27 W24-W30 W27-W33 Assembly 150 W21-W24 W21-W24 W24-W27 W30-W33 W30-W33 Storage Table A30 Girder Sizes Beam Span 30 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W16-W21 W18-W21 W18-W24 W24-W30 W27-W30 Office 100 W18-W21 W21-W24 W21-W27 W27-W30 W30-W33 Assembly 150 W21-W24 W21-W24 W24-W27 W30-W33 W33-W36 Storage Table A35 Girder Sizes Beam Span 35 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W18-W21 W21-W24 W24-W27 W24-W27 W27-W30 Office 100 W21-W24 W24-W27 W24-W30 W24-W30 W30-W33 Assembly 150 W14-W18 W18-W21 W18-W24 W21-W27 W27-W30 Storage Table A40 Girder Sizes Beam Span 40 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W21-W24 W21-W24 W24-W27 W24-W27 W27-W33 Office 100 W24-W27 W24-W27 W24-W27 W27-W30 W30-W33 Assembly 150 W21-W24 W24-W27 W24-W27 W30-W36 W33-W36 Storage
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SYSTEMS PAGE 82 Dead load includes system self weight (slab + steel) Superimposed dead load = 25 psf (partitions + MEP) Loads are uniformly distributed over bay area 4½ in. normal weight concrete topping 2 in. composite metal decking 50 ksi steel yield 3 ksi concrete strength 2-hour fire rating Girder Girder Span B1 Span G1 10'-0" Max. Beam Beam Beam Beam Tables B to B40 Table B Beam Sizes Beam Span: B1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W12-W16 W16-W21 W18-W24 W21-W24 W24-W27 Office 100 W14-W16 W16-W21 W18-W24 W21-W27 W27-W30 Assembly 150 W14-W18 W16-W18 W21-W24 W24-W30 W27-W33 Storage Table B20 Girder Sizes Beam Span 20 feet Girder Span: G1 (ft) Live Load, psf 20 25 30 35 40 Classification 50 W21-W24 W21-W24 W24-W27 W24-W27 W27-W33 Office 100 W24-W27 W24-W27 W24-W27 W27-W30 W30-W33 Assembly 150 W21-W24 W24-W27 W24-W27 W30-W36 W33-W36 Storage
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