SC-3D

What is the minimum fire resistance rating of 6” thick CHB wall?

• 4 hours

• 3 hours

• 1 hour

• 2 hours

Answer explanation

(NBCP) walls and partitions shall have a one-hour fire-resistive rating: Solid masonry, 10 cm (4”) thick; hollow unit masonry, 15 cm (6”) thick

A fully cured concrete is achieved after how many days?

• 28 days

• 24 days

• 7 days

• 36 days

Which glass is ideal for shower partitions and is resistant to hot water?

• tempered

• annealed

• float

• laminated

Which glass is used for windshield?

• annealed

• tempered

• laminated

• float

Which glass is used in helping reduce the glare of the sun, improve the energy efficiency and provides protection from harmful UV rays?

• Reflective

• Float

• Annealed

• Tinted

Which is the most preferred or best type of glass for skylights?

• clear

• tempered

• annealed

• laminated

Which type of metals is not mixed because it can cause corrosion.

• stainless steel and copper

• copper and aluminum

• aluminum and stainless steel

• copper and zinc

Answer explanation

Corrosion develops when two dissimilar materials are combined in a corrosive electrolyte. This can occur when certain materials (such as aluminum) are in contact with stainless steel.

Which metal material produces a natural “patina” effect?

• stainless steel

• cast iron

• copper

• aluminum

What is the standard length of angle bar in the Philippines?

•  

  3 m - 6 m

• 6 m

• 3 m

• 2.4 m

In steel construction, which supports the roof sheathing or roof deck?

• girder

• purlin

• rafter

• joist