To calculate the number of FP24 risers needed, measure from the top of the temporary covers (factory set with standoffs in place) to the finish grade. If the depth from cover to grade is 2½" or less, the cover adapter may be elevated and no risers are needed. The cover adapter may also be lowered up to 2½"; Trimming may be required.
Riser Quantity
Fast Pitch® (FP24) riser quantity:
From top of temporary cover
Fast Pitch® (FP24) riser quantity:
From centerline of inlet
To calculate the number of FP24 risers needed, measure from the centerline of the pipe to the finish grade. If no risers are needed, the cover adapter may be elevated and or lowered to meet grade. The cover adapter may be lowered up to 2½"; Trimming may be required. Riser quantity is for a single cover. Multiply the riser quantity by tank covers.
