ball test

ball test

[′bȯl ‚test]

(civil engineering)

In a drain, a test for freedom from obstruction and for circularity in which a ball (less than the diameter of the drain by a specified amount) is rolled through the drain.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ball test

1. See Kelly ball test.

2. In a drain, a test for freedom from obstruction and for circularity; a ball (less than the diameter of the drain by a specified amount) is rolled through the drain.

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Kelly ball test, ball test

A test which uses a device consisting of a metal plunger (having a hemispherical bottom) which is guided by side stirrups; indicates the consistency of fresh concrete by the depth of penetration when the plunger drops.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.