IS 4571 : 1977 Specification for Aluminium Extension Ladders for Fire Brigade use

1 Scope

1.1 This standard lays down the requirements regarding material,size, mass and performance tests of aluminium extension ladders forfire fighting purposes.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 617 : 1975Specification for aluminium and aluminium alloy ingotsand castings for general engineering purposes

IS 733 : 1975Specification for wrought aluminium and aluminium alloy,bars rods and sections (for general engineering purposes)

IS 930 : 1977Specification for wooden extension ladder for firefighting purposes

IS 1084 : 1969Specification for manila ropes

IS 1285 : 1975Specification for wrought aluminium and aluminium alloys,extruded round tube and hollow sections (for generalengineering purposes)

IS 3921 : 1966Specification for aluminium channels