Refer to table: The formula for the size of thrust blocks needed to install water mains is: thrust per 100 PSI = required area of the thrust block. Bearing load of soil = per 100 PSI of water pressure. What size TB are needed for 6″ tee in sandy soil? (Note there will be a chart that you can use to figure the size of the block)

Refer to table: The formula for the size of thrust blocks needed to install water mains is: thrust per 100 PSI = required area of the thrust block. Bearing load of soil = per 100 PSI of water pressure. What size TB are needed for 6″ tee in sandy soil? (Note there will be a chart that you can use to figure the size of the block)