What follows is advice from four manufacturers of water storage tanks and two tank consultants whose job it is to independently inspect water tanks as they are being built repaired or recoated.
Water storage tank roof rafter earthquake straps.
Commercially available strapping kits make this a relatively easy process.
Tank damage mode at hanshin awaji earthquake.
Rheem protech earthquake strap model sp13345 26 99 26 99.
Extensive requirements were added for anchor bolts and anchor straps.
The storage of water spherical tanks pressure vessels for the storage of high pressure liquefied.
Holdrite hr 80 360 360 degree galvanized steel water heater restraint up to 80 gallon 4 8 out of 5 stars 17 sioux chief 524 1022pk2 3 4 inch by 10 feet 22 gauge metal hanger strap 3 pack.
6 straps should be secured to the wall studs using lag bolts that are a quarter inch in diameter by 3 inches long.
If the existing strapping is not 4 inches up then it is rather easy to move the strap up.
Water heaters should be strapped so that in an earthquake they cannot shift about or move in any.
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Roof rafters designed using a roof live load greater than 50 lb ft 2 2 400 n m 2 may utilize higher allowable stresses when using material with minimum specified yield strength greater than a36 material.
The bottom strap on a water heater should be a minimum of 4 inches above the gas valve controls.
The sloshing phenomena and pressures by the sloshing on the tank roof have been presented.
These can be found in many hardware stores on the aisle displaying the water heaters.
In the three dimensional tank most developed models use shell element for the wall the roof and the tank bottom beam elements for the roof rafters and fluid element for liquid containing cylindrical tank.
Holdrite quick strap stainless steel gas electric tankless water heater expansion tank mounting bracket model qs u 16 61 16 61.
It begins with design.
Awwa also has standards for coating steel water storage tanks d102 14 and factory coated bolted carbon steel tanks d103 09.
Second secure tank with heavy gauge metal straps top and bottom.
The event of earthquake the design spectrum for sloshing in tanks the design pressure for silos.
Replace all copper and metal piping with flexible natural gas and water line connectors.
To obtain an illustrated copy of these standards contact the state and.
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