Must know

Question 1

Moisture content of lumber at the time of installation

Answer 1

not more than 19%

Question 2

OSB, Waferboard and plywood marking information

Answer 2

1) the manufacturer
2) the standard to which it is produced
3) the material is of an exterior type

Question 3

Unreinforced Concrete compressive strength for garage floors, carport floors and all exterior flatwork

Answer 3

32 MPa after 28 days

Question 4

Unreinforced Concrete compressive strength for interior floors other than those for garages and carports

Answer 4

20 MPa after 28 days

Question 5

Unreinforced Concrete compressive strength for all other applications other than garage floors, carport floors, exterior and interior floors

Answer 5

15 MPa after 28 days

Question 6

Air entertainment of concrete used for garages and carport floors

Answer 6

5 to 8%

Question 7

Combination rooms (opening between the areas)

Answer 7

occupies the larger of 3 m2 or 40% or more of the wall measured on the side of the dependent area.
AND shall not contain doors or windows.

Question 8

Barrier-free installation between 900mm and 1100mm

Answer 8

1) door pull on both sides of the water closet stall door near the latch.
2) Controls for electrical switches, intercom switches
3) Door opening devices that are the only means of door operation
4) the centre of the control for power door operator

Question 9

Barrier-free exterior walk

Answer 9

• width of not less than 1100
• gradient not exceeding 1 in 20
• gradient more than 1 in 20: Ramp
• free from obstruction
• have a level area of 1670 by 1670 adjacent to the entrance door (at least 600 beyond the latch side of the door when it opens towards the walk then 300)
• level difference not more than 200: Curb Ramp

Question 10

Barrier-free doorway clear width

Answer 10

minimum 860 mm

Question 11

Barrier-free doors in a series (distance between doors)

Answer 11

1500 + width of the door

Question 12

Barrier-free door clearance on the latch side (except where there is a power door operator)

Answer 12

600 if the door swings towards the approach side
300 if the door swings away from the approach side
300 if there is a sliding door

Question 13

Barrier-free ramp

Answer 13

• minimum width of 900
• the maximum gradient of 1 in 12
• a level area of 1670 by 1670 at doorways (at least 600 beyond the latch side of the door when it opens towards the ramp then 300)
• (1670 by ramp width) at 9m intervals OR 90-degree change of direction
• equipped with handrails

Question 14

Assisting listening device

Answer 14

classrooms, auditoria, meeting rooms, theatres

100 m2 AND an occupant load of more than 75

Question 15

Barrier-free water closet

Answer 15

• The clear width of 1500 in diameter
• has door requirements
• has water closet requirements
• have a coat hook
• has toilet paper dispenser requirements
• ## grab bar

Question 16

The water/cementing materials ratio for slab-on-ground

Answer 16

no higher than 0.55. The lesser the better

Question 17

Drain tile or Pipe diameter

Answer 17

Min 100 mm

Question 18

Barrier-free path of travel unobstructed width

Answer 18

at least 1.10 m