1, pipe length, if there are CAD drawings, you can use Guanglianda installation calculation software to calculate them. If it is a paper version, manual calculation is faster. Measure the horizontal length in the plan with a ruler, and calculate the vertical length of the pipeline with elevation.

2. Valves are calculated by quantity, just count them directly on the drawing.

3. If the quota of volume 8 is set, there is no need to calculate the pipe fittings, which are already included in the quota.

I hope this helps.