Installation in shaft
During the installation of the pipes from the main line to the apartments in a building, one of the following techniques is used to allow the pipes to expand linearly.
1) When a branch is embedded in concrete, as shown as in Figure 11.0, the SN distance between the tee and wallopening should be ensured to allow for expansion of thepipe during change of temperature.
Figure 11
2) The hole diameter inside the wall should be bigger than the pipe diameter which passes through the wall as shown in Figure 11.1. The diameter of the hole must be specified in such a manner that the branch is able to move during expansion of the main pipe.
Figure 11.1
3) The L-shaped pipe segment in Figure 11.2 is used to compensate for length variations due to thermal expansion.
* The horizontal spacing of fixed clamps depends on thesize and type of pipe (see page 34).
Figure 11.2
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