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18
Seismic strapping
Tronic 1000 T – 6 720 821 421 (2017/10)
7 Seismic strapping
Fig. 7
[A] Extra centre strap for water heaters exceeding 200L
[B] Storage water heaters to be restrained with 25x1
galvanized steel straps tensioned when fixed in place.
Straps to be fixed to wall framing with:
- 1 No. 8 coach screw with 30x2 thick washer, or
-2 No. 20x2.5 thick washers.
Screws to penetrate timber framing a minimum of 50.
[C] 50x50 vertical blocking full height of water heater, fixed
to wall framing with 1 No. 100x3.75 nail at 600
maximum centres
[1] Storage water heating
[2] Light timber frame wall
New Zealand regulations require storage tanks to be fixed with
seismic strapping as per NZS4603 or NZS4607.
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