Page 43 - Build 151

door sill
aluminium door joinery 12 mm minimum
nished oor level
air seal
oor structure
150 mm minimum (if sill is in a rebate in concrete, the 150 mm is from the bottom of the rebate)
channel grating
1:40 fall away from building
exterior surface
drainage channel with minimum 1:200 fall to outlet
ashing tape
width and length as per E2/AS1
Figure 4 Level threshold with drainage channel.
Provide handrails between 900–1,000 mm high for safety or as an aid
to walking. Where a person can fall 1 m or more from a footpath, ramp or landing, a barrier complying with Building Code Acceptable Solution F4/AS1 must also be provided.
Level entry to the house
Entry into the house should be level (see Figure 3). This may require careful design and construction to prevent moisture ingress.
Concrete slab oors must be at least 150 mm above permanent paving and 225 mm above unpaved ground, while suspended timber oors are likely to be at least 400 mm above ground. Nevertheless, Acceptable Solution E2/AS1 allows level access in accordance with paragraph 7.3 and Figures 17A and 17B.
A concrete oor slab must have a drainage channel located across the door opening (see Figure 4) that:
● is wide enough to meet the surface water capacity requirements in E1/AS1
paragraph 3.2 for speci c design
● under E2/AS1 is at least 150 mm deep
● is no more than 3.7 m long
● has a minimum 1:200 fall to a drainage outlet
● has a removable grating with gaps that cannot trap wheelchair wheels
and mobility aids
● has a continuous 12 mm gap between grating and threshold.
Exterior drainage must comply with E2/AS1 including a minimum 1:40 fall away from the channel.
A timber oor may have a timber deck with level access. It must have a continuous 12 mm minimum wide gap between the decking and the
Figure 5
Channel grating across level threshold (grating parallel to opening preferable).
threshold or doorsill. All weathertightness requirements of the opening must comply with clause E2 External moisture as shown in E2/AS1 (see Figure 6).
A non-cantilevered deck may be at the same level as the threshold in accordance with E2/AS1 paragraph 7.3 and Figure 17A. It must also have a continuous 12 mm minimum wide gap between the decking and the external wall. If the deck is enclosed, the underlying membrane plus removable surface of tiles, pavers or timber decking should be as shown in E2/AS1.
Roof the entrance to provide shelter. It should also be well lit at night, preferably with a sensor light. Provide su cient manoeuvring room for a wheelchair.
Build 13519—Decemberr201153//JJanuarry201164 — 41
PHOTO – LIFEMARK