hi need ur help 4 dis . What data is needed to fabricate a 16 inch pipe elbow?
cut a 22 1/2 out of it
40
DPI - is an acronym for 'dots per inch'. It usually relates to the resolution of the printed output from printers, or the input resolution of scanners.
You can put up to a 2 inch pipe into a 4 inch. If you are putting 4 inch to 4 inch, either take out a section of the cast and put the PVC in or cut out a section and connect the PVC to the cast with rubber sleeves meant for this. You can use a saddle clamp for the 2 inch. It is a half round piece of PVC with a 2 inch connection in it. It is held on with two U bolts that go around the cast pipe. Put it where you need it and mark the 2 inch hole on the cast. Drill a series of 1/8 inch holes around this circle. when you get them all drilled, you can break out the plug. Try to keep it from falling into the cast pipe. Put the saddle clamp on and connect the PVC pipe as needed. Seal the saddle clamp to the cast pipe with plumbers putty.
see http://www.k-mac-plastics.net/data%20sheets/ATG-014S1.pdf i believe it is 1/3 for .325 inch thick
elbow senter making
90 degree
to ease the instalation of the elbow
1/2 inch
6 inch or 4 inch if it's a short radius
4 inch 5d bend 45degree elbow center how much
4 1/2 inch
39in.
2 inches
7/8 of an inch
To calculate the square meters of a duct you must add the total length of the straight duct work plus the loss of length from the elbows. A standard elbows measurement is 15 feet for each elbow with a 4 inch diameter or 20 feet for an elbow with a 6 inch diameter.
If the leak is in Elbow better change it. For a short time you can use welding to seal. It depends on the medium, temperature and pressure critically