【HVAC Version】Daily Question 20171104
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This post was last edited by hesonchang214 on 2017-11-8 09:52. Fill in the blanks: The main drainage pipes and horizontal main ducts should be fitted with (), and the diameter of the test ball used should be no less than () of the diameter of the drainage pipe. Answer: Ball Pass Test 2/3
Ball passage test, 2/3 (two-thirds)
Ball test: not less than 2/3 of the drainage pipe diameter
Ball passage test: not less than 2/3 of the diameter of the drainage pipe
Ball test: not less than 2/3 of the drainage pipe diameter
Ball test: not less than 2/3 of the drainage pipe diameter
Both the main drainage pipes and horizontal main ducts shall undergo a ball passing test, with the diameter of the ball used for this test being not less than 2/3 of the diameter of the drainage pipe.
Ball test: not less than 2/3 of the drainage pipe diameter