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IS 3696:1987 Part 2 is the Indian Standard (BIS) for safety rules for scaffolds: part 2 specific requirements for different types of scaffolds. This part of the code provides specific safety requirements for the erection, use, maintenance, and dismantling of different types of temporary scaffolds, including wooden, bamboo, steel tubular, suspended, and trestle scaffolds.
Lays down specific safety rules for different types of scaffolds such as pole scaffolds, trestle scaffolds, cantilever scaffolds, etc.
! Ensure base plates of steel tubular scaffolds are set on solid, firm ground or proper sole plates; never use loose bricks or makeshift supports.
! Suspended scaffolds must have their suspension ropes, counterweights, and hoist mechanisms rigorously inspected daily before use.
! Bamboo and timber scaffolds rely heavily on the quality of lashings; ensure coir or jute ropes used for lashing are in good condition and tightly secured.
OSHA 29 CFR 1926 Subpart LOccupational Safety and Health Administration (OSHA), US Department of Labor (US)
HighCurrent
Safety and Health Regulations for Construction - Scaffolds
Covers safety regulations for the design, construction, and use of all scaffolds in construction.
BS EN 12811-1:2003British Standards Institution (BSI) / European Committee for Standardization (CEN), UK/EU
HighCurrent
Temporary works equipment - Part 1: Scaffolds - Performance requirements and general design
Specifies performance requirements and methods for structural and general design of access and working scaffolds.
AS/NZS 1576.1:2010Standards Australia / Standards New Zealand (AU/NZ)
HighCurrent
Scaffolding - Part 1: General requirements
Provides general requirements for the design, construction, and use of scaffolding and its components.
ANSI/ASSP A10.8-2019American National Standards Institute / American Society of Safety Professionals (US)
HighCurrent
Safety Requirements for Scaffolding
Establishes safety requirements for the construction, operation, and use of scaffolds in construction and demolition.
Key Differences
≠The IS code is largely prescriptive, detailing specific dimensions and materials (including bamboo). Modern standards like OSHA 29 CFR 1926 Subpart L are more performance-oriented, focusing on achieving safety outcomes and placing significant emphasis on design by a 'qualified person' for non-standard configurations.
≠OSHA mandates the presence and specific duties of a 'competent person' for scaffold erection, modification, and inspection. IS 3696:1987 mentions supervision by a 'competent person' but the definition, responsibilities, and enforcement are less rigorous and detailed compared to the OSHA framework.
≠Fall protection triggers differ significantly. OSHA generally requires fall protection (guardrails or personal fall arrest systems) for any employee on a scaffold more than 10 feet (3.05 m) above a lower level. IS 3696:1987 specifies providing guardrails for scaffolds exceeding 2 meters in height, a lower threshold but with less detail on alternative fall protection systems.
≠IS 3696:1987 includes specific clauses for materials common in India, such as timber and bamboo, with detailed requirements for their use. Western standards like OSHA and BS EN focus almost exclusively on metal components (steel, aluminum) and engineered wood products, with no provisions for bamboo.
Key Similarities
≈Both the IS code and international standards mandate a structural factor of safety of 4 against failure. This principle ensures that the scaffold and its components can withstand four times the maximum intended load.
≈The fundamental requirement for a complete guardrail system consisting of a top rail, mid-rail, and toeboard is consistent across IS 3696 and standards like OSHA. The specified heights for the rails are also very similar.
≈All standards emphasize the critical importance of a solid and stable foundation. They require scaffolds to be erected on firm ground with adequate base plates and mud sills or other suitable foundations to distribute the load.
≈Both IS 3696 and international standards require regular inspections of scaffolds. The IS code specifies inspection before first use and at least weekly, while OSHA requires it before each shift. The underlying principle of verifying scaffold safety before and during use is a core similarity.
Parameter Comparison
Parameter
IS Value
International
Source
Structural Factor of Safety
4
4
OSHA 29 CFR 1926.451(a)(1)
Guardrail Top Rail Height
900 mm to 1150 mm
38 to 45 inches (970 mm to 1140 mm)
OSHA 29 CFR 1926.451(g)(4)(ii)
Toeboard Minimum Height
150 mm
3.5 inches (89 mm)
OSHA 29 CFR 1926.451(h)(4)(ii)
Fall Protection Trigger Height (General)
2.0 m (for guardrail fitment)
10 feet (3.05 m)
OSHA 29 CFR 1926.451(g)(1)(vii)
Access Ladder Extension above Platform
At least 1.0 m
At least 3 feet (0.9 m)
OSHA 29 CFR 1926.1053(b)(1)
Max. Platform Deflection (under load)
Not explicitly stated as a simple ratio in Part 1; referred to good engineering practice.
Not more than 1/60 of the span
OSHA 29 CFR 1926.451(f)(16)
Routine Inspection Frequency
At least every 7 days
Before each work shift
OSHA 29 CFR 1926.451(f)(3)
⚠ Verify details from original standards before use
Key Values4
Quick Reference Values
Factor of safety for wire ropes in suspended scaffolds10
Minimum height of toe boards150 mm
Height of guard rails above platform900 mm to 1050 mm
What is the minimum factor of safety for ropes used in suspended scaffolds?+
A minimum factor of safety of 10 is required for suspension wire ropes to ensure operational safety.
Can structural components of different materials be mixed in the same scaffold?+
No, mixing primary load-bearing parts of different materials (e.g., steel and bamboo) in the same structural framework is unsafe due to differing load distribution and flexibility characteristics.
What are the primary fall protection requirements for scaffold platforms?+
Working platforms must be equipped with guard rails at a height of 900 to 1050 mm and toe boards not less than 150 mm high to prevent personnel and tools from falling.