WITH CORRECT SOLUTIONS.

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NASCLA EXAM

WITH CORRECT SOLUTIONS.

The frame of scaffold shall be tied into the building or structure at a maximum of how many feet vertically? - correct answer- 26 feet

For asphalt roof slopes of 4:12 or greater, how many layers of

underlayment are required? - correct answer- 1

What is the acceptable difference of air temperature from the supply and return in an HVAC system? - correct answer- Between 15 and 20 degrees Fahrenheit (8-11 degrees Celsius).

This difference, also known as the "delta T," indicates the effectiveness of the cooling or heating process.

What are masonry exterior non-load bearing walls that are not wholly supported at each story? - correct answer- Curtain wall

What do contour lines on a topographical map that form a closed loop without hachures represent? - correct answer- Hill 1 / 4

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Depending on whether they are drawn with or without hachures (short, perpendicular lines inside the loop). Hills are indicated by closed loops without hachures, where the innermost loop represents the highest point of the hill. Depressions, on the other hand, are shown by closed loops with hachures, and the innermost hachured loop indicates the lowest point of the depression.

What is the minimum fire-resistance rating for an elevator shaft wall that is 5 stories in height? - correct answer- 2 hours

The financial status of a company at any given time is shown by? - correct answer- Balance sheet

Large precast wall panels that are the full height of the building are often produced by what method? - correct answer- Tilt-up construction

When measured perpendicularly from the rear wall, what should the minimum depth of clearance be around an accessible water closet? - correct answer- 56 inches

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Smoke control systems shall have: - correct answer- Smoke

control systems should effectively control smoke movement, maintain usable egress routes, and restrict smoke spread. They should activate immediately upon receiving an activation command, and their components should operate within specific timeframes. Smoke control systems also require proper maintenance, testing, and documentation

What CAN be used for fire blocking between floors? - correct answer- 2x lumber, plywood, OSB, drywall, mineral wool, and glass fiber batt insulation.

Loose-fill insulation material, insulating foam sealants and caulk materials shall NOT be used as a fireblock unless specifically tested

What is the minimum thickness of aluminum used for open valleys? - correct answer- 0.024 inches

What is the correct way to store metal decking on a job site? - correct answer- Keep bundles elevated off the ground, preferably on pallets or ties, with one end higher for drainage.

Cover bundles with tarps or waterproof materials, ensuring good ventilation, and consider securing them with straps to 3 / 4

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prevent movement. Avoid long-term storage on the ground and keep them away from roads to prevent damage from road spray.

Cement plaster over exterior wall studs requires galvanized

weep screed with a: - correct answer- Cement plaster over

exterior wall studs requires a weep screed with a minimum vertical attachment flange of 3 1/2 inches (89 mm). This weep screed should be a corrosion-resistant, galvanized sheet with a minimum thickness of 0.019 inches (0.48 mm), also known as No. 26 galvanized sheet gage.

Adjacent combustible members entering into a concrete or masonry fire wall from opposite sides shall have a separation

of: - correct answer- At lease 4 inches

How thick is "heavy duty" steel decking? - correct answer- 15/16", .017 - .040 thick

What does 3Ф represent? - correct answer- Three-phase electric power.

This is a type of alternating current (AC) system that uses three wires to transmit electricity, making it a common method used in electrical grids worldwide

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