Drafting

Question 1

Windows to double story homes need to be compliant with the NCC 3.9.2.5 to reduce the risk of small children falling from windows.

Answer 1

Protection is required from all bedrooms in new residential building where the floor below the window is more than 2m above the surface below.
A window that has no opening until 1.7m up needs no protection.
A window which has no opening or climbable element below 865mm need a screen that is child resistant.
If there is an opening or climbable element then there must be a screen which is permanent.

Question 2

Stairs
Min and max of riser 115 - 190
Min and max of going 240 - 355
Min and max of slope relationship and equation (2R+G) 550 - 700

Answer 2

Riser 115 - 190
Going 240 - 355
Slope Relationship (2R+G) 550 - 700

Question 3

WHAT IS THE MINIMUM AND

MAXIMUM NUMBER OF RISERS

Answer 3

2 min, 18 max

Question 4

What is maximum size sphere between treads with

open risers?

Answer 4

125mm

Question 5

Minimum depth of stair landing?

Answer 5

750mm

Question 6

How wide are stairs usually?

Answer 6

1m

Question 7

Downpipes must

(a) not serve more than ___ of gutter length for each downpipe; and
(b) be located as close as possible to _______

Answer 7

(a) not serve more than 12m of gutter length for each downpipe; and
(b) be located as close as possible to valley gutters

Question 8

BAL Assessment

Answer 8

Bushfire Attack Level (BAL) assessment

Question 9

Why use maxi bricks for external leaf?

Answer 9

If it will be rendered, maxi brick is quicker to lay but doesn’t look nice, the render will cover that.

Question 10

How many courses up should the window head sit?

Answer 10

25c is the standard.

Question 11

When you have a cantilevered balcony how much does the backspan need to be?

Answer 11

2/3rds of the entire length needs to be backspan.

Question 12

What are abutting cross walls?

Answer 12

Walls that are directly bonded to external walls
Or
Connected to upper floor or ceiling frame

Question 13

When in a garage it’s written FFL 0c RL 9.943

What’s RL stand for?

Answer 13

Reduced Level
(Reduced level is relevant to the ground levels. MUST be noted on site plan, floor plans and elevations).
Reduced level is relevant to the ground levels

Question 14

Translate:
SEWER JUNCTION IN 2.3 UP 0.8 
R.L.9.15 (TOP OF RISER) 
INVERT LEVEL 8.35 
About 1.0m deep (T.O.R)

(ground level is 10.63)

Answer 14

The sewer connection has been brought in 2.3m and up 0.8 from the main sewer line.

Depth of the sewer: ground level (10.63) minus invert lvl (8.35) = 2.28m

Question 15

In a normal scenario the second floor slab is how thick and why? If the slab spans more than 4.5m then how thick does it need to be?

Answer 15

172mm because that’s 2c

If the span is more than 4.5m a 3c (257mm) slab will be required.

Question 16

What is the purpose of bond breakers?

Answer 16

It is a galvanised steel sheet (g.s.s) installed between top of supporting brick wall and underside of slab. Stops materials bonding between top of brick and concrete
slab as concrete slab will initially shrink after curing and could pull the walls.

Question 17

What is formwork?

Answer 17

Temporary support for concrete, forms desired shape of concrete, supports concrete until it has sufficient
strength to support itself.

Question 18

Height, Width, Length of standard brick (brick courses) 
Standard = external leaf
Height 76mm
Width 110mm
Length 230mm

Answer 18

Height 76mm
Width 110mm
Length 230mm

Question 19

Height, Width, Length of Partition brick.
Height 162mm
Width 90mm
Length 305mm

Answer 19

Height 162mm
Width 90mm
Length 305mm

Question 20

What’s a Clerestory? (pronounced clear story)

Answer 20

a high section of wall that contains windows above eye level. The purpose is to admit light, fresh air, or both.

Question 21

What is an R-Value?

Answer 21

The R-value is a measure of the insulation batt’s resistance to heat flow, also known as thermal resistance. The greater the R-value, the greater the resistance to heat transfer, and the greater the insulating effect and subsequent energy savings.

Question 22

A PARCEL OF LAND YOU CAN’T BUILD ON?

Answer 22

EASEMENT

Question 23

What’s PILE FOOTING?

Answer 23

Piles are putting your footing all the way down into undisturbed earth, relevant for sewer lines. Engineer to design.

Question 24

minimum ceiling height in kitchen?

Answer 24

2.4m (some places can go to 2.1 depending on the classification of the room)

Question 25

What is efflorescence

Answer 25

Efflorescence is the migration of a salt to the surface of a porous material, where it forms a coating.

Question 26

Whats the vertical bit of timber in a wall/ceiling?

Answer 26

Stud

Question 27

what is effluent?

Answer 27

noun
liquid waste or sewage discharged into a river or the sea.

(effluence: a substance that flows out from something. the action of flowing out.)