Advanced Scaffolding Interview Questions & Answers

Question 1. Would You Use Open-ended Hook Rods To Construct A Hung Scaffold?

Answer :

No, dont use open-ended hook rods to construct a hung scaffold.

Question 2. What Is This Minimum Diameter Of Flexible Steel Wire Rope You Would Use To Support A Hung Scaffold?

Answer :

11mm is the minimum diameter of flexible steel wire rope you would use to support a hung scaffold.

Question 3. Will A Grade (m) Chain Support A Greater Or A Lesser Load Than A Grade (t) Chain?

Answer :

Grade (M) chain support a lesser load than a Grade (T) chain.

Question 4. What Is The Minimum Working Load Limit For Beam Clamps, Trolleys And Shackles Used To Support A Hung Scaffold?

Answer :

500kg is the minimum working load limit for beam clamps, trolleys and shackles used to support a hung scaffold.

Question 5. What Would You Use To Protect A Flexible Steel Wire Rope From Damage When It Is Fixed Around The Sharp Edges Of A Beam?

Answer :

Beam chaffers (or half rounds or split tubes) use to protect a flexible steel wire rope from damage when it is fixed around the sharp edges of a beam.

Question 6. When A Ledger Is Supported In The Eye Of A Sling, How Would You Stop It From Sliding?

Answer :

Fix a coupler on each side when a ledger is supported in the eye of a sling.

Question 7. How Would You Stop Shackle Pins From Unwinding?

Answer :

To stop shackle pins from unwinding, Mouse them.

Question 8. What Sort Of Coupler Bolt-threads Are Unsuitable For Fixing Hung Standards?

Answer :

Use speed threads (or multi-start threads) to sort of coupler bolt-threads are unsuitable for fixing hung standards.

Question 9. Would You Extend The Length Of A Hung Standard By Fixing Scaffold Tubes With End-to-end Couplers?

Answer :

No, not possible to extend the length of a hung standard by fixing scaffold tubes with end-to-end couplers.

Question 10. What Is The Minimum Rated Working Load For A Trolley Used To Support A Suspension Rope?

Answer :

The minimum rated working load for a trolley used to support a suspension rope is 500kg.

Question 11. Would You Fix A Cradle’s Working Load Limit Sign To The Inside Or To The Outside Of The Cradle?

Answer :

You can fix a cradle’s working load limit sign to the inside of the cradle.

Question 12. What Is The Minimum Cradle Width For A Double Rope Suspended Scaffold?

Answer :

The minimum cradle width for a double rope suspended scaffold is 900mm.

Question 13. What Is The Maximum Cradle Width For A Double Rope Suspended Scaffold?

Answer :

The maximum cradle width for a double rope suspended scaffold is 1.7m.

Question 14. What Is The Minimum Width Of A Swing Stage Cradle?

Answer :

The minimum width of a swing stage cradle is 450mm.

Question 15. What Is The Maximum Width Of A Swing Stage Cradle?

Answer :

The maximum width of a swing stage cradle is 900mm.

Question 16. What Is The Minimum Width Of A Work Cage?

Answer :

The minimum width of a work cage is 750mm.

Question 17. What Is The Maximum Width Of A Work Cage?

Answer :

The maximum width of a work cage is 1.5m.

Question 18. What Is The Minimum Height Of A Stabilising Sheave Above The Platform Of A Work Cage?

Answer :

The minimum height of a stabilising sheave above the platform of a work cage is 2m

Question 19. Would You Fix The Inboard End Of A Needle With Friction Anchors?

Answer :

No, not possible to fix the inboard end of a needle with friction anchors. 

Question 20. Can Bags Of Sand Be Used To Counterweight A Needle?

Answer :

No, can't bags of sand be used to counterweight a needle.

Question 21. Would You Use Counterweights To Fix A Needle Which Supports Two Suspension Ropes?

Answer :

No, not use counterweights to fix a needle which supports two suspension ropes.

Question 22. What Is The Maximum Rope Tension Allowed On A Shackle Used To Support A Suspension Rope?

Answer :

80% of rated working load (or 80% of SWL) is the maximum rope tension allowed on a shackle used to support a suspension rope.

Question 23. What Is The Maximum Rope Tension Allowed On A Choked Sling Used To Support A Suspension Rope?

Answer :

40% of rated working load (or 40% of SWL) is the maximum rope tension allowed on a choked sling used to support a suspension rope.

Question 24. Where Two Trolleys Are Used To Support A Swing Stage, How Would You Stop Them From Spreading?

Answer :

Connect them with a spacer tie (or spreader bar) to atop trolleys from spreading when two trolleys are used to support a swing stage.

Question 25. When A Drum-type Scaffolding Hoist Is At Its Lowest Point, How Many Full Turns Or Rope Should Remain On The Drum?

Answer :

3 full turns or rope should remain on the drum when a drum-type scaffolding hoist is at its lowest point.

Question 26. With A Fully-loaded Drum-type Scaffolding Hoist, How Far Should The Drum Flange Extend Beyond The Built-up Rope?

Answer :

2 rope diameters should the drum flange extend beyond the built-up rope whith a fully-loaded drum-type scaffolding hoist.

Question 27. When A Climber-type Scaffolding Hoist Is At Its Lowest Point, What Is The Minimum Length Of Spare Rope?

Answer :

1m is the minimum length of spare rope, When a climber-type scaffolding hoist is at its lowest point.

Question 28. Would You Use Bulldog Grips To Secure A Suspension Rope?

Answer :

No, not use bulldog grips to secure a suspension rope.

Question 29. What Type Of Suspended Scaffold Does Not Need A Protective Device For Each Scaffolding Hoist?

Answer :

double rope suspended scaffold is a type of suspended scaffold does not need a protective device for each scaffolding hoist.

Question 30. What Type Of Scaffolding Hoist Must Be Fitted With A Load Limiting Device?

Answer :

An electronically powered scaffolding hoist is a type of scaffolding hoist must be fitted with a load limiting device. 

Question 31. Is A Person With A Basic Scaffolding Certificate Allowed To Construct A Mobile Frame Scaffold?

Answer :

Yes, a person with a Basic Scaffolding Certificate allowed to construct a mobile frame scaffold.

Question 32. Name Something Which Might Corrode Scaffolding Equipment?

Answer :

1. Acids
2. Alkalis
3. Salts

Question 33. What Type Of Scaffolding Material Would You Use To Construct A Scaffold Where There May Be A Danger Of Explosion?

Answer :

Non-conductive material (or timber) is a type of scaffolding material would you use to construct a scaffold where there may be a danger of explosion.

Question 34. How Would You Stop A Ring-type Gin Wheel From Sliding Along The Scaffold Tube?

Answer :

Fix a coupler on either side of the ring to stop a ring-type gin wheel from sliding along the scaffold tube.

Question 35. What Would You Do To Make Safe A Hook-type Gin Wheel With No Safety Catch?

Answer :

Mouse the hook (wire up the open hook) to make safe a hook-type gin wheel with no safety catch.