SCAFFOLDING INTERVIEW QUESTIONS & ANSWERS
*How do you handle stressful situations or tight deadlines while working on scaffolding projects?
-Prioritize Tasks
-Create a Schedule
-Communicate Effectively
-Stay Flexible and Adaptive
-Manage Stress
-Focus on Solutions
*Why safety is important
-Morale
-Legal
-Financial
*What is the definition of tower scaffold?
-A tower scaffold is an independent scaffold consisting of four vertical standards connected longitudinally and transversely to create a scaffold of one bay.
*What is the height & base ratio for tower scaffold?
Internal tower 1:4
External tower: 1:3
*Explain the scaffold assembly procedure
*Step by step assembly procedures
• Site Assessment and Planning
• Inspect the Site.
• Plan the Layout
• Safety Measures
• Laying the Base
• Building the Frame
• Level and Square
• Bracing.
• Platform or Decking
• Access
• Safety Features Check the Scaffold(DROP BAR/LADDER HAND RAIL)
• Tagging and Signage
*What is the standard code for pre-fabricated mobile tower?
EN 1004-1
*What is the height & base ratio for mobile tower scaffold?
Internal tower 1:3.5
External tower: 1:3
*What is the height & base ratio for free standing birdcage scaffold?
Internal tower 1:3
External tower: 1:1
*What steps do you take to maintain and inspect scaffolding equipment?
Regular Inspections
Follow Manufacturer Guidelines
Check Load Ratings
Clean and Lubricate
Repair or Replace Damaged Parts
Address Corrosion
Store Properly
Train Personnel
Keep Records
*Maximum height for independed scaffold
16m maximum height top of the lift
*Explain the foundational slope ratio acceptable for scaffold
1 vertical & 10 horizontal 1:10
*Explain the plumb tolerances for scaffold standard
20mm within 2mtr
50mm throughout height of scaffold
*How much maximum loading on inside board
75 kg/m2 very light duty
*Which precaution should be observed while dismantling of scaffold?
*Which need to be considered in selecting anchors for tying scaffold structures are
• The base material and suitability of the structure
• Working load compared to recommended or allowable load
• The way loads are transferred through the ties and the direction they are applied - tension, shear,Bending or a combination.
• The need for testing
• The potential for corrosion
*Standard code of scaffold couplers
EN-74/BSEN-1139/AS-NZS-1576
*Which factor should be considered while manual handling
• The TASK
• The INDIVIDUAL CAPABILITY
• The LOAD
• The working ENVIRONMENT
(These can be easily remembered by the acronym TILE)
*Full body safety harness code
BS EN 361:2002
Personal protective equipment against falls from a height. Full body harnesses
EN 355: Personal Protective Equipment against Falls from a Height - Energy Absorbers
*What safety measures do you prioritize when working at heights?
*Explain the Unsuitable Scaffold Anchor Points
supported with putlog clips (single couplers)
joint
Standards unless a suitable anchor device is used designed for the purpose
Puncheons
Transoms at foot level or below
Putlog transoms or bridle tubes
Underslung tubes below ledgers on non-load-bearing couplers
Reveal or prop tie assemblies
Vertical braces or other diagonal tubes
protruding end of transom, needle or dropper
*How many Types of knot are used in scaffolding?
Rolling hitch -scaffold tube
Timber hitch -scaffold board
Bowline
Figure of eight
*Maximum & minimum overhang of the board
Should not excessed 150mm & should not less 50mm
*Minimum overlap of the board One board sited on another board
300mm
*Explain the oversail scaffold
An "oversail" scaffold is a type of scaffolding structure that extends out beyond the edge of a construction site, often to provide access to otherwise unreachable areas
600mm
*Explain the LOLER certification
Lifting Operations and Lifting Equipment Regulations 1998 (LOLER)
The employer must arrange for thorough inspections as per LOLER, with gin wheels inspected every year and all accessories (including ropes) inspected every six months
*The access opening in the platform for the ladder
450mm x 600mm.
*Explain the Benefits of system scaffold
Speed and Efficiency
Safety and Stability
Cost-effectiveness
*Explain work at height rules and regulation
The Factories Act, 1948 - Section 32
Work at height regulation-2005
OSHA -1926 Subpart M-Fall Protection
NASC-SG4:22 Preventing Falls in Scaffolding Operations
*Explain the capacity of Supplementary couplers
are active couplers that add strength to the connection.
Two BS EN 74-1 Class A couplers (right angle couplers only) 9.1kN
Two BS EN 74-1 Class B couplers (right angle couplers only)15.2 kN
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