scope:

Work specified-This Specification covers tightness testing of liquid and gaseous environmental containment structures that are designed to resist liquid or gaseous loads and to meet the provisions of ACI 350. Unless otherwise specified, test containment structures after the structure is complete and concrete has attained its specified compressive strength. Provisions of this Specification govern except where other provisions are specified in Contract Documents.

Tests specified herein include:

(a) Hydrostatic tightness test for open or covered containment structures

(b) Surcharged hydrostatic tightness test for closed containment structures

(c) Pneumatic tightness test for closed containment structures

(d) Combination hydrostatic-pneumatic tightness test for closed containment structures

Do not substitute one type of test for another type of test without acceptance of the Architect/Engineer.

Unless otherwise specified, tightness testing procedures and requirements contained herein are applicable to reservoirs, basins, tanks, and open liquid transmission structures such as cast-in-place channels and conduits.

Unless otherwise specified, consider each cell of multi-cell containment structures as a single containment structure, and tested individually.

Unless otherwise specified, preparatory items indicated in 2.3.1 are required but waiving such items does not change the test acceptance criteria.

If specified, hydrostatically tightness test concrete paved structures, channels, and impoundments.

This Specification is incorporated by Contract Documents and provides requirements for the Contractor.

This Specification governs for construction within its scope, except project-specific Contract Documents govern if there is a conflict.

This Specification governs if there is a conflict with referenced material and testing standards.

Contractor is permitted to submit written alternatives to any provision in this Specification for consideration.

Unless otherwise specified, do not use this Specification in conjunction with ACI 350.5M.

Ignore provisions of this Specification that are not applicable to the Work.

Values in this Specification are stated in SI units. A companion specification in inch-pound units is available.

The Notes to Specifier are not part of this Specification.

Work not specified-These provisions are not intended for structures such as hazardous material primary containment structures, cryogenic storage structures, high-pressure gas tanks, or miscellaneous precast concrete structures such as culverts, pipes, and manholes designed to meet requirements of other standards.