HOW TO INSTALL TANKS

Saudi Polycon Underground Tanks

    1. Excavation
  • Select a site with good sub-soil drainage
  • Excavate to the depth that will provide a minimum of 15 cm of cover over the top of the tank. This will avoid over-expansion of the tank and possible leakage
  • Allow 45 to 60 cm on all sides of the tank. Failure to comply with allowance ranges could cause tank to collapse
  • Bed the tank on a smooth concrete floor. The tank must be leveled before installation
    • 2. Backfilling Exterior
  • Backfill with 30 cm layers and compact each layer. Always compact ends first
  • Maximum backfill over the top of the tank is 15 cm
  • Top of the backfill provides a concrete slab of 15 to 20 cm to avoid any external load on the top of the tank Caution: fill tank with water as you backfill, keeping water level even with backfill level as you go to prevent possible collapse.
    • 3. Backfill Materials
  • The preferred material for backfill surrounding and covering the tank is a sand/gravel mixture. This is required and the tank must be filled with water during the backfilling process
  • The rations of the sand/gravel mixture are: 100% smaller than 1-1/2 and about 50% smaller than
  • All fill should be free of any wood, masonry debris, silt or clay

    • CAUTION
  • Do not install any tank in water-saturated clay or high water table. The tank may collapse and its contents will escape
  • Tanks are not fire resistant. Do not store or install your tank near an open flame or expose it to heat that exceeds 750 degrees Celsius
  • Do not install any tank under the path of vehicles or heavy equipment
  • If the tank is pumped for normal maintenance, it should be refilled immediately
  • Tanks cannot be used for holding or pumping because they may collapse if left empty underground. Water should not be allowed to reach less than 25% of the tank’s full capacity
  • Protect your tank from sharp objects that could puncture it and cause leakage


    • Underground Fiberglass tanks

    1. Excavation
  • Select a site with good sub-soil drainage
  • Excavate to a depth that will provide a minimum of 20 cm of cover over the top of the tank. This will avoid possible damage to the tank
  • Allow 45 to 60 cm on all sides of the tank. Failure to comply with these allowance ranges could cause the tank to collapse
  • Provide a minimum of 15 cm selected bedding material over the concrete bed. Place the tank in a leveled position

    • 2. Backfilling Exterior
  • Sand bags may be places on the bottom side of the tank to prevent it from rolling or moving
  • Backfill should be carried out in 15 cm per level and should be done carefully to ensure no voids are left under the tank. If necessary, compact each laver individually
  • Maximum back fill over the top of the tank is 20 cm
  • Top of the back fill provides a concrete slab of 15 to 20 cm to avoid any external load on the top of the tank

    • Backfill Materials
  • The preferred material for backfill surrounding and covering the tank is a sand/gravel mixture
  • The rations of the sand/gravel mixture are: 100% smaller than 1-1/2 and about 50% smaller than
  • All fill should be free of any wood, masonry debris, silt or clay

    • CAUTION
  • Do not install any tank in water-saturated clay or in high water table. The tank may collapse and its contents will escape
  • Tanks are not fire resistant. Do not store or install your tank near an open flame or expose it to heat that exceeds 750 degrees Celsius
  • Do not install any tank under the path of a vehicle or heavy equipment
  • If the tank is pumped for normal maintenance, it should be refilled immediately
  • The tank may collapse if it is left empty underground for too long. Water should not be allowed to reach less than 25% of the tank’s full capacity
  • Protect your tank from sharp objects that could puncture it and cause leakage




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