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Posted By Chas
Can anyone tell me the weight of a standard full length scaffold tube, and am I right in saying that for a non standard scaffold structure there should be a design drawing which gives an indication of the sequence of erection/dismantling. Thanks in advance.
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Posted By mivys
Tubes should be manufactured and tested in accordance with BS 1139. Common lengths are 6.3m
(21 ft), 1.5m (5 ft) and 1.8m (6 ft). The 3 main types are: black steel, galvanised steel and aluminium
alloy. Black and galvanised steel tubes usually weigh 4.37kg/m (2.9lb/ft), whereas aluminium tubes
usually weigh 1.67 kg/m (1.12lb/ft). Taken from HSE website btw...
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Posted By gerry d
I am pretty sure you`ll need a design drawing for non-standard scaffold construction. This, in my own experience is usually carried out by a specialist independent organisation.
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Posted By Safe System
All the above is correct. In regards to design scaffold the below was also taken from the HSE website.
Scaffold structures that need to be designed
1. Dead Shores
2. Flying shores
3. Raking shores
4. Cantilevered scaffolds
5. Truss-out Scaffolds
6. Access Birdcages
7. Façade retention
8. Access scaffolds with more than the 2 working lifts allowed with TG20 'Basic Scaffolds'
9. Buttressed free-standing scaffolds
10. Temporary roofs and temporary buildings
11. Support scaffolds
12. Loading Bays founded on the ground
13. Mobile and static towers outside base/height limitations
14. Free standing scaffolds outside base/height Limitations
15. Temporary ramps and elevated roadways
16. Staircases and fire escapes
17. Spectator Terraces and Seating Stands
18. Bridge scaffolds
19. Towers requiring guys or ground anchors
20. Offshore scaffolds outside Offshore Contractors Association (OCA) handbook
21. Pedestrian footbridges or walkways
22. Slung and Suspended scaffolds
23. Protection fans, Nets and Pavement Frames
24. Marine scaffolds
25. Boiler scaffolds
26. Power line crossings
27. Lifting gantries and towers
28. Steeple scaffolds
29. System scaffolds outside users guide parameters
30. Sign board supports
31. Sealing end structures
32. Temporary Storage on Site
33. Masts, Lighting Towers and Transmission Towers
34. Advertising hoardings/banners
35. Any scaffold structure subject to:
* Vibration
* High Loading
* Long term duration
* High risk areas
* Loading from passenger/goods hoists
Note: The above list is not exhaustive and any scaffold that does not comply with manufacturers guidelines as published in handbooks will require a specific design produced by a competent person.
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Posted By Safe System also For scaffolds that fall outside the scope of 'Basic Scaffolds' as described in bullet point above, the design information should describe the sequence and methods to be adopted when erecting, dismantling and altering the scaffold. more info available here: http://www.hse.gov.uk/co...tion/scaffoldinginfo.htm
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Posted By IOSH Moderator
There is useful information on the HSE website, but it is a breach of copyright to copy the text of it to this forum.
You can post links, or you can go the whole mile and get yourself a licence from the HSE to reproduce their material.
Jane Blunt
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Posted By Lwood
TG20:08 is the scaffold guidance document and the HSE website mentioned above should also be referred to.
All scaffold structures need a 'design' be it a standard design or a specialist task design. To produce anything other than the standard design mentioned above, you need a qualified scaffold designer.
L
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