HSE : IQA : Scaffolding

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The Safety Interview Question & Answer

Topic : Scaffolding

1. What is Scaffolding?
• Scaffolding is a temporary structure platform on elevated area which provide safe access to employees to work safely OR
• It is a temporary platform constructed for supporting both men and materials and working safety at a construction site.
2. What are the components of scaffolding?
• Component of scaffolding:
• Sole boards.
• Base plates.
• Posts.
• Ledger (Runner).
• Transom (Bearer).
• Right angle or double couplers.
• Couplers (end to end coupler, Adjustable couplers, Girder coupler, single coupler).
• Braces (Longitudinal brace, Zig Zag brace, transverse braces).
• Planks (LVL, Solid sawn, metal plank, Metal deck).
• Top rail, Mid rail.
• Toe board.
3. What is platform made of?
• Solid sawn wood planks, laminated veneer lumber (LVL) planks, fabricated planks or fabricated platforms.
4. What are the common types of Scaffolding?
• Tube and coupler Scaffolding (Dependent Scaffolding).
• System Scaffolding (Independent scaffolding). 
• Mobile scaffolding.
• Bracket scaffolding.
• Suspension/Suspended scaffolding.
5. What is tag system of scaffolding?
• Green tag means scaffolding is safe and can be used without full body harness.
• Yellow tag means scaffolding cab be used only after using fall arrest system (Full body harness).
• Red tag means scaffolding is not allowed to use except scaffolders who erects or dismantle it.
6. What does Tag show?
• Inspection date and due date of scaffolding.
• Scaffolding type.
• Capacity (Light duty, medium duty or heavy duty).
• Name and signature of supervisor / Inspector who signed it.
7. What are the hazards associated with scaffolding erection or dismantling?
• Working near power line.
• Not using fall protection.
• Incompetent/ Untrained scaffold.
• Unstable ground.
• Working under/ near by erecting and dismantling area.
8. List some Precautions about scaffolding erection, Alterations or dismantling?
• Ensure 
• Permit to work is obtained.
• Trained/ Certified scaffolders are engaged in job.
• Ground is level and stable.
• Competent person (Supervisor) should supervise job.
• Ensure fall protection is used where needed (such as full body harness requirements at or above 6 feet).
• Barricade the area to stop entry of unauthorized persons.
• Install signage’s (Scaffolding erection is in progress, Keep away).
• Safe distance should be maintained from power line.
• Scaffolding shall not be used during erection, dismantling or alteration.
• Red tag shall be used while erecting, dismantling or alterations of scaffolding.
9. What are hazards while using scaffolding?
• Slip, trip and fall.
• Absence of fall protection (Guard rail system or fall arrest system).
• Overloading plate form.
• Worker near power line.
• Extreme of weather (Heavy wind, Rain).
• Insufficient access/ Poor access.
10. Tell me some Precautions for using scaffolding?
• Ensure platform is free of slippery hazard.
• Do not overload platform. (Use it as it is designed for, light, medium or heavy duty).
• Ensure fall protection is used (Guard rail system and PFAS).
• Workers should be trained (Fall protection trained).
• Do not modify scaffolding.
• Use the access to climb up or down.
• Do not throw materials from scaffolding.
• Workers shall not stay on platform of mobile scaffolding while shifting from place to another.
11. How to erect scaffolding?
• It should be erected on levels firm ground
• It erected by trained / skilled person
• It is constructed using metal pipes and wooden boards
• It should be design and constructed from good and sound material
• Not to be erected on loose earth
• Clamps should fixed
• Properly bracing
• Sole plate is necessary the base of vertical pipe
12. Safety precaution of scaffold?
• Wooden board not be painted
• Wooden board should not to any cracks
• Check for rust in pipes / clamps
• Clamps should fixed and good quality
• Boards thickness should be 3.4cms and no bending
• The construction must be rigid, properly based
• Use of good and sound materials
• The wooden bellies has not joints
• Vertical poles should not be more than 6 feet
• Chains, ropes used for the suspension of scaffoldings
• Never throw any materials from height
• Use safety harness while working at above 6 feet
• Properly ties to be arrangement