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  Subsoil 

  Telescopic dome shaft 

  Compacted foundation refer page 2. 

  Backfill Material, 7mm Minus or washed sand 

 fill material must be porous see page 2. 
 

  Covering layer 

  PLATIN Rainwater Underground Tank 

  Concrete layer for surfaces used by passenger 

cars 

 

 

ß

 --> angle of cut to depth of the trench 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

5.1 

Construction site pre-check 

The following points should be clarified before installation commences: 
 
• The structural suitability of the ground (geotechnical report recommended)* 
• Maximum groundwater levels which occur and drainage capability of the subsoil 
• Types of load expected, for example: traffic loads 
• Location of all underground services 

* A geotechnical report conducted by civil testing engineers is strongly recommended to 
determine the physical characteristics of the subsoil before installation/excavation commences. 
For setback distance from neighbouring boundary and any buildings, please contact local council. 

5.2 

Trench 

To  ensure  that  sufficient  space  is  available  for  working,  the  base  area  of  the  trench  must  exceed  the 
dimensions  of  the  tank  by  > 100  mm  on  each  side; the  distance  from  solid  constructions  must  be  more 
than the depth of the trench away from the structure. 

If the depth of the  trench  is > 1250 mm an embankment must be designed  according  to meet all safety 
standards. The construction site must be level and must guarantee sufficient load-bearing capacity.  

The  depth  of  the  trench  must  be  sized,  so  that  the  maximum  earth  coverage  (see  point  2 

–  installation 

conditions) above the tank is not exceeded.  

 

A  layer  of  compacted,  Type  B  Crushed  Rock  (porous  round-grain  gravel  grain  size  8/16,  thickness 
approx. 100 - 150 mm) is applied as the foundation.  .  See Page 2. 

5. 

Installation and assembly 

ß

< 300 mm

< 300 mm

< 300 mm

< 300 mm

> 100 mm

ß

--> DIN  4124

6

3

1

4

2

5

> 100 mm

7

Summary of Contents for PLATIN

Page 1: ...1 18 SHALLOW EXCAVATION ...

Page 2: ...2 18 ...

Page 3: ...rtified to Quality standard ISO9001 2008 and AS NZS 4766 2006 Table of contents 1 INTRODUCTION 3 1 1 1 5 GENERAL NOTES ON SAFETY MAINTENANCE 4 2 INSTALLATION CONDITIONS 5 3 TECHNICAL DATA 6 4 TANK ASSEMBLY 6 5 INSTALLATION AND ASSEMBLY 7 5 1 Construction site 7 5 20 5 25 Trench Ground water Connecting several tanks 7 8 5 3 Insertion and filling 9 5 4 Plumbing connections 9 6 ASSEMBLING THE AND TEL...

Page 4: ...dvertent connection with the drinking water supply In order to avoid the wrong connection between the drinking water and the rain water pipe work all conduits and tappings of rain water have to be marked clearly with RAINWATER in writing and be in accordance with local standards All non drinking tank water outlets should be clearly marked RAINWATER and we recommend they be installed with vandal pr...

Page 5: ...c dome shaft class B in areas used by passenger cars without groundwater and stratum water Coverage heights with telescopic dome shaft with cast iron lid Maximum load of the area used by passenger cars 3 5 tonne without groundwater or stratum water Coverage heights on installation in groundwater the hatched area specifies the permissible immersion depth for the tank not under areas used by passeng...

Page 6: ...ome Graf Platin Tank 1500 Litres 3000 Litres 5000 Litres Weight 82 kg 180 kg 250 kg L 2100 mm 2450 mm 2890 mm W 1250 mm 2100 mm 2300 mm H 700 mm 735 mm 950 mm Htot 1015 mm 1050 mm 1265 mm Minimum Hole Size L x W x H 2300 x 1450 x 1155mm 2650 x 2300 x 1190mm 3090 x 2500 x 1405mm Htot Htot Maximum Height Std Shaft Lid Maximum Height Trafficable Minimum Height 185 H L B 440 Maxi Hges 140 Hges 600 340...

Page 7: ...e installation excavation commences For setback distance from neighbouring boundary and any buildings please contact local council 5 2 Trench To ensure that sufficient space is available for working the base area of the trench must exceed the dimensions of the tank by 100 mm on each side the distance from solid constructions must be more than the depth of the trench away from the structure If the ...

Page 8: ...stallation adjacent to surfaces used by vehicles If the underground tanks are installed adjacent to surfaces which are used by heavy vehicles weighing over 3 5 tonne the minimum distance away from these surfaces is at least the depth of the trench 5 2 4 Connection of several tanks When two or more tanks are to be connected together this is done by joining the tanks together by using the GRAF Plati...

Page 9: ... must not be used under any circumstances Note The surrounding trench must be a minimum 100mm wider on all sides than then the tank 5 4 Plumbing connections All feed and overflow pipes must be plumbed with a decline of at least 1 in the direction of flow possible subsequent settling must be taken into consideration in this case If the tank overflow is connected to the public storm water this must ...

Page 10: ...ace of the site 6 2 Telescopic dome shaft on which persons may walk Important To prevent loads from being transferred onto the tank 7mm Minus is filled in layers around the telescope and is evenly compacted Damage to the tank dome and telescope must be avoided during this step The cover is then positioned and is sealed and tightened to prevent entry by children 6 3 Telescopic dome shaft over which...

Page 11: ...r 955 mm with standard lid and shaft respectively 1055 mm with vehicle lid and shaft 8 Inspection and servicing The entire system must be checked for leaks cleanliness and stability at least every three months The entire system should be serviced at intervals of approx 5 years In this case all parts of the system must be cleaned and their function checked Servicing should be carried out as follows...

Page 12: ...itable for roof areas up to 350 square metres The mesh width in the sieve insert is 0 35mm 9 2 Technical Specifications 9 3 Installation of inflow pipe and overflow siphon The emergency overflow siphon pictured at top on page on the left and on Page 13 is installed at 90 degrees to the inlet and outlets of the tank the Rodent Guard is inserted in the opening of the trap 9 4 Filter Installation Con...

Page 13: ...n the metal ring with an arrow on the inlet side When installing the filter cartridge pay attention that the joint seam of the sieve surface is positioned upward 9 7 Regular Maintenance To ensure maximum water yield the filter must be checked for dirt and debris immediately following the first rainfall occurrence after the tank installation It must also be checked after any major rainfall event an...

Page 14: ... base 2 Lift tank s off truck using suitable lifting equipment 3 Use digger to lift tank s into the hole 4 Back fill must be compactable porous with a maximum size of 7mm 5 Install geotextile cloth over tank and ditch and up to ground level if ground water could be above the shoulder of the tank 6 Connect plumbing 1 3 fill tank with water and then back fill ...

Page 15: ...eece Branch for assistance 7 Insert tank seal and plumbing connection fittings 8 Connect Minimax Filter Package see instructions pages 12 13 9 Lube up rubber seal with liquid soap provided before inserting Shaft Lid 10 Install Graf Telescopic Shaft Lid man hole to tank and complete landscaping 10 Pictorial Installation Guidelines of Graf Platin Tank cont 10 1 Installer Support Service ...

Page 16: ...tem 11 2 Detention Retention Tank Detain Retain With a national focus on water savings by collecting rainwater the installation of a detention retention coupled with a quality filtration system enables clean quality rainwater to be collected in the Graf Platin Tank Sized and set up correctly the tank will detain a specific amount of water required by the council before letting it go slowly back in...

Page 17: ...17 18 11 4 Two 5 000L Tanks Detention Retention System 11 5 Height of Detention Outlet Storm Water Detention Retention ...

Page 18: ...18 18 ...

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