E: info@deltapanels.com      Head Office: 731 Boundary Road, Richlands, Qld 4077    +61 7 3271 2170
 W: www.deltapanels.com     Sydney Depot:  11 The Old Northern Road, Narellan, NSW 2567   +61 02 4611 7712
ABN: 11 147 861 292
Version Date: 
08.05.2023
11
Full Shielding
FS
Partial Shielding
PS
No Shielding
NS
At least 2 rows of housing or similar size permanent structures surround the intended 
construction site. In Regions A & B, heavily timbered areas provide full shielding as 
long as they are within 100 metres.
Full shielding is only possible for houses within Topographical Classes T0, T1 and 
T2. The Full Shielding classification is only applicable to suburban developments 
with 10 or more houses and or similar sized structures, per hectare. The effects 
of roads or other open spaces within a distance of 100 metres in any direction are 
exempt.
Partial shielding is only possible for houses within Topographical Classes T0, T1,T2 
and T3.
To qualify there is a requirement to have at least 2.5 houses per hectare or equivalent 
structures situated upwind of the intended building location. This is typical of an 
acreage estate or housing based at the 2nd row from open water, abutting parklands 
or airfields.
This would be houses located on the edge of housing estates, the side of open 
water, airports, sporting fields and large open parklands.
The shielding effect of established trees and established building structures will have an effect on the upward 
wind pressures. With the exception of regions C & D where trees are not considered a shielding element. 
The 3 shielding classifications are:-
STEP 1        DETERMINING CORRECT WIND SPEED
Step 1.3        Shielding Determination

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