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PRECAST CONCRETE METER BOXES, VALVE AND FIRE HYDRANT CHAMBER
  1. Scope - This specification covers the precast concrete components for the use in meter boxes, valve and fire hydrant chambers.
  2. Materials - These shall comply with all the requirements laid down in SABS 677-1969 for cement, sand, aggregate, reinforcement and water.
  3. General - These chambers may have the cast iron cover cast in or a concrete cover may be used.
  4. Dimensions - The actual dimensions shall not differ by more than the following values: Wall thickness - 3mm.
  5. Deviation from straightness - This shall not deviate by more than 5mm per metre of length.
  6. End Squareness - The maximum deviation from end squareness of the ends shall not exceed 6mm.
  7. Cover - The minimum thickness of the cover over all reinforcement shall be 10mm.
  8. Resistance to Proof Load - These valve boxes and chambers shall support a point load of 35KN spread over an area of 200 x 200 mm without showing any signs of failure.
  9. Marking - The following information shall be indelibly marked on the boxes and covers:

a. The manufacturer's trade name.
b. The date of manufacture


Type H w W
1 920 200 300
2 600 200 400
 

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