A simpler method to calculate draining 45° elbow

Regarding the calculation of draining 45 degree elbows, there are still many friends who say that the tutorial is too complicated to understand. In this drainage installation, I have figured out a new method and shared it with everyone. I hope that everyone can understand the truth from it.

I want to combine two drainage risers with a centering distance of 23 cm. The distance between the oblique tee and the 45-degree elbow is 16 cm, which is 7 cm from the actual situation. The vertical distance differs by 7 cm. Then we calculate the length of the inclined tube of 7 cm vertically.

According to the calculation formula of the isosceles right triangle: the oblique side = right angle side × root number 2 (that is, 1.414), converted into 7 × 1.414 is equal to 10 cm, that is, the tube that adds another 10 cm can reach our riser wants size of.

On the side of the fitting, a pipe connection is also required. The actual length of the inclined pipe is 8 cm.

We use the length of the inclined tube calculated above and the length of the pipe on the fitting to calculate the total length of our inclined tube. 10+8=18, use this short tube with the original oblique tee and 45 degrees, the centering of the two tubes is 23 cm. What about the two 45-degree climbs? In fact, the same as above, we must first measure how much the two accessories are assembled. Use the actual height of the pipe to subtract the height of the fitting, then ×1.414 is the length of the net.

Under what circumstances does the calculated net pipe need to add parts, and under what circumstances?

In fact, this depends on the way the pipes are connected, such as PVC pipes, which are socket connections. The middle of the socket connection definitely needs a tube to connect. If we don't count the tube, the length will not be right.

If it is a clamp connection, the clean pipe does not need to add the accessory section, directly use the climbing height, minus the height of the fitting, and multiply by 1.414, which is the net pipe.

The same dish, not the same way! The same pipeline, not the same calculation method! The 45 degree elbow calculation method has been done twice. This calculation method is relatively simple and straightforward. As for whether it can be applied to various cross tubes, it depends on whether you can use the calculation formula of the isosceles right triangle. It is.