Workplace Safety, Tools, Equipment and Environmental Practices
What this domain tests
This section tests site safety rules, correct use of tools and equipment, scaffolding and ladder practice, first aid and fire response, and the environmental duties of a building maintenance worker.
Core rules and concepts
- PPE: helmet, safety shoes, gloves, goggles or face shield, dust mask, and full body harness above 1.8 m or near openings.
- Scaffolding: double scaffolding for masonry, working platform at least 1 m wide, fully boarded, with guardrails at about 1 m and 0.5 m and toe boards.
- Ladders: set at about 1:4 (one metre out for every four metres up), tied at the top, and extending about 1 m above the landing.
- Excavation deeper than 1.5 m in loose soil must be shored or sloped; keep spoil and materials at least 1 m from the edge.
- Electrical safety: three-pin plugs, proper earthing, no temporary bare joints, and earth-leakage protection on site distribution boards.
- Fire: CO2 or dry-powder extinguisher for electrical fires, water or foam for Class A combustible solids; know the nearest first-aid box and emergency number.
- Environment: segregate construction and demolition waste as per the C&D Waste Management Rules, 2016; control dust by sprinkling water and covering loads; prevent silt from entering drains.
Worked example
A ladder is needed to reach a 3 m high landing. Vertical height 3 m plus 1 m extension above the landing = 4 m ladder length. Base offset at 1:4 = 3 ÷ 4 = 0.75 m from the wall. Tie the top, keep the base on firm level ground, and face the ladder while climbing with both hands free.
Traps that cost marks
Using water on an electrical fire; a ladder at 1:2 or 1:8; leaving a guardrail out because the platform is short; dumping debris in a drain or on the roadside.