Page 74 - Student Hand Book - Scaffolding - L&T CSTI Serampore

G = dead load

Q = live load (including impact, if any).

Where environmental loads will be such that work is unlikely to proceed under those conditions,
then the worst case may be restricted to dead loads, expected live loads from stacked materials

and environmental loads. For permissible stress design, the sum of the dead and live loads ap-
plied shall be increased by 15 percent, to allow for re-use of materials.

Design Loads

Dead Loads

The dead load (G) shall include the self-weight of the scaffold structure and components includ-
ing working platforms, catch platforms, access platforms, stairways, ladders, screens, sheet-

ing, platform brackets, suspension ropes, secondary ropes, traversing ropes, tie assemblies,
scaffolding hoists, electrical cables and any other attachments, where appropriate.

Environmental Loads

Where appropriate, the environmental loads shall include the following:

Wind loads in accordance with IS Codes imposed on the scaffold, including any guardrails, toe
boards, stacked materials, screens, sheeting, platform ropes, guy wires and other attachments

Snow loads in accordance with IS Codes

Rain and ice loads, where it is considered likely that the scaffold and claddings will be subjected

to rain or a build-up of ice

Earthquake loads in accordance with IS Codes.

Live Loads

The live load (Q) shall include the following:

The weight of persons

The weight of materials and debris

The weight of tools and equipment

Impact forces

Supporting Structure

General

The supporting structure shall be capable of supporting the most adverse combination of loads
applied by the scaffold during the period of its service.

Participant Handbook : Scaffolding 74