D26 QUIZ OF THE DAY

Which part of a roof is provided at the intersection of two sloping surfaces forming an internal angle?

• Ridge
• Eaves
• Valley
• Hip

Answer explanation

Valley is the internal angle formed when two sloping surfaces of a pitched roof meet inward.

The inclined member of a truss which extends from the foot to the ridge is known as?

• Tie Beam
• Common Rafter
• Principal Rafter
• Batten

Answer explanation

Principal Rafter is the inclined member of a truss that supports purlins and the roof load.

Which of the following roof types has a flat surface at the top but slopes in four directions?

• Deck Roof
• Hip Roof
• Gambrel Roof
• Mansard Roof

Answer explanation

Deck Roof is characterized by slopes on all four sides with a flat surface on the top.

Which roof covering material is stratified and obtained from quarries or mines?

• Polycarbonate
• Slate
• Asbestos Sheet
• Cement Sheet

Answer explanation

Slate is a stratified rock, available in different sizes and used for roof coverings.

Statement 1: A jack rafter is longer than a common rafter. Statement 2: Jack rafters meet hip or valley rafters. Choose the correct option.

• Both statements are true
• Both statements are false
• Only Statement 1 is true
• Only Statement 2 is true

Answer explanation

Jack rafters are shorter than common rafters and meet at hip or valley rafters, making Statement 2 correct.

Statement 1: Purlins are placed perpendicular to the principal rafter. Statement 2: Purlins are meant to support common rafters.

• Both statements are true
• Both statements are false
• Only Statement 1 is true
• Only Statement 2 is true

Answer explanation

Purlins are laid perpendicular to principal rafters and support common rafters. Hence both are correct.

Statement 1: Ridge board is a vertical member used in trusses. Statement 2: Ridge board is placed at the top of the roof where two slopes meet.

• Both statements are correct
• Only Statement 1 is correct
• Only Statement 2 is correct
• Both statements are incorrect

Answer explanation

Ridge board is a horizontal member at the junction of roof slopes. Statement 2 is correct.

Statement 1: Hip roof has 4 slopes. Statement 2: Gable roof has 3 slopes.

• Both are true
• Both are false
• Only Statement 1 is true
• Only Statement 2 is true

Answer explanation

Hip roof has four slopes; gable roof has two. Statement 1 is true.

Statement 1: Wall plate distributes roof load to masonry wall. Statement 2: Wall plate is embedded on top of wall to support rafters.

• Both are true
• Both are false
• Only Statement 1 is true
• Only Statement 2 is true

Answer explanation

Wall plate helps distribute roof load and is placed at the top of masonry walls to receive rafters.

In a Mansard Roof, the break in slope is found in how many directions?

• Two
• One
• Four
• Three

Answer explanation

Mansard roofs have a break in slope in all four directions, making them different from gambrel roofs.