56) Who can erect scaffolding
57) Who can inspect the components used for erecting a scaffold
A competent and certified scaffolding supervisor
58) What is tag system
A tag system is put on scaffolding, by a competent person, indicating the present condition whether it can be used and whether fall protection needed or not.
Red tag – Do not use (is being erected or dismantled)
Yellow tag – Can use with 100% fall protection (is incomplete or cannot be completed)
Green tag – Safe to use (scaffolding is complete)
59) Who can place a scaffold tag
Competent person (scaffolding supervisor)
60) What are the details in a scaffold tag
Location, Maximum loading capacity (kN/m2 or psf), Date erected and date inspected with foreman’s name and signature.
61) In which condition a scaffold cannot be erected
Extreme weather (strong wind, rain, ice), ground not stable, safe clearance (minimum 10 feet) can’t be maintained with live wire, certified workers and supervisor are not available, permit not available.
62) What is the minimum overlapping of two adjacent planks in a platform
Not less than 12 inches
63) What is a guard rail system
A barrier consisting of top rail and med rails, toe board and vertical up right erected to prevent men and materials falling from an elevated work area.
64) What is a toe board
Barrier secured along the sides and ends of a platform to guard falling of materials, tools, and other objects.
65) What is the minimum height of a toe-board
Minimum 4 inches
66) What is the height of the top-rail from the platform
38 inches to 45 inches
67) What are the requirements in placing an access ladder on a scaffold
Provide access when scaffold platforms are more than 2 feet above or below a point of access.
When using ladders, bottom rung must not be more than 24 inches high. Ladder to be at the correct angle (i.e. Feet out for every 4 feet in height) Ladders are to be tied at both sides not by the rungs. Make sure the ladder extends a safe distance (at least 90cm) above the landing stage. When the horizontal travel distance exceeds 15 meters provide at least two accesses. If the platform is longer, access shall be provided at every 30 meters. The ladder should be free from damage and should be color coded. All access ladders must be tagged.https://t.me/HSEjobvacancy
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