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Wood Tank Construction Specifications
Metric Version

Kitset Wood Tank Specifications
(Unless otherwise specified dimensions are mm.)
Baseboards:
200x25 Radiata Pine Wood treated to T.P.A.H.4.		   Shingles:
200x19 Radiata Pine "Weatherboard" with bandsawn outside face treated to T.P.A.H.3.		   Liners:
Food grade PVC 0.2mm/0.5mm
         
Staves:
150x40 or 100x40 single tongue and groove, bandsawn outside face, machined inside face and cut to length prior to treatment to T.P.A.H.4.		   Cables:
6mm & 9mm dia. 1/19 LHOL 160 Grade galvanized steel strand.
Minimum breaking loads 3,120 and 7,050 kg.		   OPTION
Platform:
Decking 200x25 Radiata Pine Wood treated T.P.A.H.4.
Joists 100x50 Radiata Pine treated T.P.A.H.4.
Bearers Double 150x50 Radiata Pine treated T.P.A.H.4.
No posts supplied.
       
Rafters:
100x50 or 150x50 Radiata Pine Wood treated to T.P.A.H.3. 		  Grips:
TimberTank special self-tightening cable grips hot dip galvanized.		  

 

Wood Tank Specifications
Baseboards:
200x25 Radiata Pine Wood treated to T.P.A.H.4.		   Shingles:
200x19 Radiata Pine "Weatherboard" with bandsawn outside face treated to T.P.A.H.3.		  

Liners:
Food grade PVC 0.2mm.
Food grade PVC 0.5mm
Bituthene 3000

Note: Polythene and Copolymer have proved unsatisfactory materials for liner membranes.

OPTION
Platforms are available for all tanks.
       
Staves:
150x50 or 150x40 single tongue and groove, bandsawn, outside face, machined inside face and cut to length prior to treatment to T.P.A.H.4.		   Cables:
9mm dia, 1/9 LHOL 160 Grade galvanized steel strand.
Minimum breaking load 7,050 kg.		  
       
Rafters:
150x50 or 200x50 Radiata Pine Wood treated to T.P.A.H.3 after machining.		   Grips:
TimberTank special self-tightening cable grips hot dip galvanized.		  

 

Wood Reservoir Specifications
Footing:
Concrete Footing Ring beam 900x75 unreinforced concrete, 17.5 MPa.		   Shingles:
200x19 Radiata Pine "Weatherboard" with bandsawn outside face treated to T.P.A.H.3.
     
Staves:
150x50 or 150x75 Radiata Pine Wood, double tongue and groove. Bandsawn outside face, machined inside face and cut to length prior to treatment to T.P.A.H.4.		   Cables:
150-600 cubic m. Reservoir 12mm Dia. LHOL 145 Grade galvanized steel strand. Minimum breaking load 18,500 kg to 24,200kg.
     
Rafters:
6.9m tank diameter rafters are 200x50 Radiata Pine Wood.
8.9m tank diameter rafters are 250x50 Radiata Pine Wood. Longer rafters Plywood "I" beam, finger jointed Radiata Pine top and bottom chord dimensions dependent on span of rafter. 12mm or 15mm plywood web. All roof timber treated to T.P.A.H.3.		   Liners:
0.5mm Food grade PVC with welded joints.
1mm Butyl Rubber with welded joints.
Bituthene 3000.

 

  
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