BS 5268-7.2:1989 - Structural use of timber. Recommendations for the calculation basis for span tables. Joists for flat roofs – BSI British Standards

BS 5268-7.2:1989

Structural use of timber. Recommendations for the calculation basis for span tables. Joists for flat roofs

Status : Withdrawn, Superseded   Published : June 1989 Replaced By : BS EN 1995-1-1:2004+A2:2014

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BS 5268-7.2:1989 recommends a calculation basis for the permissible clear span for joists for flat roofs and roofs with a slope of up to 10 degrees. The recommendations apply to joists at a maximum spacing of 610 mm centre-to-centre, this being the maximum spacing for which the “load-sharing” assumption may be adopted as described in BS 5268-2. The method of calculation makes no allowance for any contribution of the roof decking to the load resistance of the joists although it is assumed that the decking should be capable of providing lateral load distribution. It does not cover the design of joists taking account of a structural contribution by sheet material supporting the roofing where such action can be provided by adequate design of its attachments as in a stressed skin panel roof.

The uniform and concentrated loads recommended in BS 6399-1 and BS 6399-3 are considered.

BS 5268-7.2:1989 is applicable to the species and grades of timber given in BS 5268-2.




Standard NumberBS 5268-7.2:1989
TitleStructural use of timber. Recommendations for the calculation basis for span tables. Joists for flat roofs
StatusWithdrawn, Superseded
Publication Date30 June 1989
Confirm Date01 November 2007
Withdrawn Date24 November 2009
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)BS 648, BS 4471:Part 1, BS 4978, BS 5268:Part 2, BS 5268:Part 3, BS 5268:Section 7.1, BS 5268:Section 7.3, BS 5268:Section 7.4, BS 5268:Section 7.5, BS 5268:Section 7.6, BS 5268:Section 7.7, BS 6100:Section 2.1, BS 6100:Section 4.1, BS 6100:Section 4.2, BS 6100:Section 4.3, BS 6100:Section 4.4, BS 6399:Part 1, BS 6399:Part 3, ISO 3898, CIB-W18-1, NLGA 1979
Replaced ByBS EN 1995-1-1:2004+A2:2014
Draft Superseded By86/10303 DC
DescriptorsStructural timber, Wood, Roofs, Flat roofs, Pitch (roof), Joists, Design, Design calculations, Loading, Imposed loading, Dead loading, Bending stress, Domestic, Structural design, Architectural design, Spaced, Length, Tables (data), Equations, Shear stress, Deformation, Beams, Structural members
ICS91.060.20
91.080.20
Title in FrenchUtilisation du bois en construction. Recommandations relatives aux bases de calcul des portées. Tables de calcul. Solives de toitures terrasses
Title in GermanVerwendung von Holz im Bauwesen. Empfehlungen zur Berechnung von Spannweitentabellen. Dachbalken
CommitteeB/525/5
ISBN0 580 16587 6
PublisherBSI
FormatA4
DeliveryNo
Pages20
File Size492.4 KB
Price£105.00


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