A tank uses caterpiller-like treads instead of tires, because the treads give much better traction when traveling cross country (where most tank battles take place).
Rubber stair treads are commonly used in indoor and outdoor locations with high foot traffic, such as commercial buildings, schools, hospitals, and residential buildings. They provide a durable and slip-resistant surface to improve safety and protect the underlying stairs from wear and tear.
it upon the material used to build the septic tank
Because the rubber in tires was being used for war supplies including tank treads and jeep tires.
It takes a lot more force to keep treads rolling along than it takes to keep wheels rolling along. And they cause more wear on roads. So they're only used where they're absolutely needed.
Foam rubber tubes will protect them from cold.It would be helpful if you stated WHAT you want to protect them from !
"Gravitons"
Plaster of Paris.
Depending on the material inflamed. Water will at least suppress the heat, but fire suppressant foam is the most effective material used.
I used gelatin or a large water tank.
tennis ballsWell, yes, a tennis ball would clog up a septic tank, if you used enough of them. Any man-made material, esp. latex can stop septic action. Or perhaps the tank is just full.Try adding dry yeast to the tank.
A framing square. 16 inches by 24 inches