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Description / Abstract:
Work specified—This Specification covers tightness
testing of liquid and gaseous environmental containment structures
designed to resist liquid or gaseous loads. Provisions of this
Specification shall govern except where other provisions are
specified in Contract Documents.
These test methods are for the tightness testing of concrete
environmental engineering liquid and gaseous containment
structures. The included tests are:
(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.
The tightness testing procedures and requirements contained
herein are applicable to reservoirs, basins, and tanks constructed
of concrete or a combination of concrete and other materials.
Preparatory items indicated are required, unless otherwise
specified, but the waiver of such items shall not change the test
criteria.
Each cell of multi-cell containment structures shall be
considered a single containment structure and tested individually
unless otherwise permitted.
The hydrostatic tightness testing procedures and requirements
herein are also applicable for tightness testing of open concrete
liquid transmission structures such as castin- place concrete
channels and conduits.
The hydrostatic tightness testing procedures and requirements
herein, where applicable, can be used for tightness testing of
concrete paved structures, such as channels and impoundments.
Work not specified—These provisions are not intended
for hazardous material primary or secondary containment structures,
cryogenic storage structures, highpressure gas tanks, or
miscellaneous precast concrete structures such as culverts, pipes,
and manholes.