What is a reinforcing pad?
Repads are also known as reinforcing pads. These are doughnut-shaped supports that wrap around the base of your branch joint. Essentially, when you weld a perpendicular branch, sometimes called a stub-in, onto your main pipe, repads add a layer of strength.
How are reinforcement pad dimensions calculated?
Dimensions Reinforcing Pad
- Material = same material as the run pipe.
- Width = half a diameter of the branch pipe (at least 50 mm)
- Thickness = same thickness as the run pipe, with a min. of 3 mm and a max. of 20 mm.
What is nozzle Repad?
A plate formed to the shape of the tank or vessel around a nozzle for extra strength. Also known as repad or weld pad.
What is a weep hole in piping?
A weep, a weep hole, or a weep-brick is a small opening that allows water to drain from within an assembly. Weeps are located at the bottom of the object to allow for drainage; the weep hole must be sized adequately to overcome surface tension.
Why reinforcement is provided in nozzle?
A reinforcing pad on the nozzle is provided when the area “lost” due to cutting the opening is more than the area “available” in the header portion and the nozzle portion (above the header and inside the header).
What is a reinforcement pad on a pipe?
The reinforcing pad is a ring cut from a steel plate that has a hole in the center equal to the outside diameter of the branch connection. It is slipped onto the branch pipe before the branch pipe is welded to the header.
When to use reinforcing pads?
Normally Reinforcing pads are used at stub-on and stub-in branch connections if required per the line list or if required per the branch chart in the piping material specification. By using reinforcing pads it is not required to strengthen the complete header pipe.
What is the maximum thickness of a reinforcing pad?
Sometimes, Reinforcing pads are provided in-between shoe or saddle support and parent pipe when parent pipe thickness is less than required. Normally Maximum thickness that is used in engineering companies as reinforcing pad thickness is 1.5 times parent pipe thickness.
What are reinforcing pads and welding saddles?
A precision manufactured reinforcing pad, the welding saddle has a short neck on the branch outlet that is designed to give additional support to the branch connection. Figure 3.35 shows single-line and double-line drawing representations of reinforcing pads and welding saddles. Figure 3.35. Reinforcing pads and saddles. O-lets.