BS 5975 2019 Extract - Flipbook - Page 6
BS 5975:2019
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BRITISH STANDARD
Standard solutions
Temporary works co-ordinator
General
The PC's TWC
The TWC (other than the PC's TWC)
Temporary works supervisor
General
Role of the TWS
Duties of the TWS
Design of temporary works
General
Design brief
Design guidance
Choice of temporary works
Selection of materials and components
Design output
Design check
Table 2 4 Categories of design check in temporary works
Resolution of queries raised by the design checker
Alterations
Standard solutions
Site considerations
Co-ordination, supervision and checking of work on site
Loading and unloading temporary works
Dismantling
Section 3: Falsework
General
Materials
General considerations
Testing and inspection
Steelwork (other than scaffold tube)
Timber
Table 3 4 Basic stresses and moduli of elasticity for the wet condition
Table 4 4 Softwood species which satisfy strength classes in accordance with BS 4978
Table 5 4 North American softwood species and grade combinations which satisfy strength
classes in accordance with national lumber grades authority (NLGA) and national grading rules
for dimension lumber (NGRDL) joist and plank rules
Table 6 4 Hardwoods which satisfy the strength classes graded to BS 5756:2007
Table 7 4 Preferred target sizes and actual dimensions for constructional sawn softwood timber
Table 8 4 Modification factor K3 for duration of load on falsework
Table 9 4 Modification factor K4 for bearing stress
Table 10 4 Maximum depth-to-breadth ratios
Figure 5 4 Shear stress on a timber beam of rectangular cross-section
Table 11 4 Depth modification factor K7 for solid timbers less than 300 mm depth
Table 12 4 Permissible stresses and moduli of elasticity for general falsework applications
Table 13 4 Permissible stresses and moduli of elasticity for load-sharing falsework applications
Table 14 4 Commercial grade timber suitable to produce mainly class C16 timber
Concrete and concrete components
Brickwork and blockwork
Other materials
II#© THE BRITISH STANDARDS INSTITUTION 2019 3 ALL RIGHTS RESERVED
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