A pipe offset is calculated when a pipe is altered in both the vertical and horizontal planes of a piping system. This type of occurrence is known as a "rolling offset." Following Pythagoras' theorem, the first number, or true offset, is calculated by taking the offset squared and adding the rise squared to obtain the true offset squared. Take the square root of the answer to obtain the offset.
Know MoreOnce the true offset is known, the pipe fitter can utilize a table to find out the setback and diagonal center. Most fitting constants are 45 degrees in the plumbing trade. If the fitting angle is 60 degrees, the diagonal for the pipe is equal to the true offset times 1.155. If the fitting angle is 45 degrees, the true offset is multiplied by 1.414 to obtain the diagonal. For any fitting angle that is 22.5 degrees, the true offset is multiplied by 2.613 to get the answer for the diagonal.
The setback for fitting a pipe equals the true offset multiplied by 0.577 for a fitting angle of 60 degrees. The true offset multiplied by 1.000 equals the setback for a 45-degree fitting angle. Multiply the true offset by 2.414 for the setback for a 22.5-degree fitting angle. Using the above calculations, the true offset for a 45-degree fitting is 14.42 inches and the same number for the setback.
Learn more in PlumbingSchedule 80 pipe ranges in nominal thickness from 0.10 inches for 1/8-inch pipe size to 1.22 inches for 24-inch pipe size according to Engineering Toolbox. The 1/8-inch schedule 80 pipe has an external diameter of 0.41 inches and an internal diameter of 0.22 inches.
Full Answer >Fixing loose connections in the pipes typically tackles the problem, according to Do It Yourself. Inspect the seals and pipes where necessary by detaching the drain basket and drain pipe with a wrench to unlock the washer. If any cracks are seen on the seals and pipes, then replacement is necessary.
Full Answer >To repair a PVC pipe leak, begin by releasing the water pressure from the pipe. There are several ways to repair a PVC pipe leak, but the simplest method is to sand the surface of the pipe and apply epoxy. Make sure to allow an hour for the curing process.
Full Answer >To properly cut cast iron pipe, use a snap cutter, which cuts accurately without damaging the rest of the pipe. First, stabilize the pipe, and then mark a cut line. Finally, use the snap cutter to cut the pipe.
Full Answer >