WS Series WATERSTOP (WS-25/ WS-30) is a rubber ring which is compressed around the pipe circumference using Stainless Steel Clamps, pre-venting infiltration and exfiltration between the WS Series WATERSTOP and the pipe. It is then either grouted into an existing structure, or has a new structure poured around the pipe with the WS attached to the pipe.
WS Series WATERSTOPs meet or exceed the material physical property requirements only of the following specifications:
WS-30 Waterstops can be purchased for elipitical and arched pipe in a wide range of sizes.
|TYPICAL MATERIAL PHYSICAL PROPERTY TEST RESULTS for WS WATERSTOP (as in ASTM C 923 and C 1478)|
|Test||ASTM Test Method||Test Requirements||Typical Result|
ACID and 1N
|D 534, AT 22ºC FOR|
|NO WEIGHT LOSS|
NO WEIGHT LOSS
|TENSILE STRENGTH||D 412||1200 PSI, MIN.||1450 PSI|
|ELONGATION AT BREAK||D 412||350%, MIN||540%|
|HARDNESS||D 2240 (SHORE A DUROMETER)||±5 FROM THE|
|D 573, 70± 1ºC|
FOR 7 DAYS
|DECREASE OF 15%, MAX.|
OF ORIGINAL TENSILE
OF 20%, MAX. OF ELONGATION
|COMPRESSION TEST||D 395, METHOD B, AT|
70ºC FOR 22 HRS
|DECREASE OF 25%, MAX.|
OF ORIGINAL DEFLECTION
|WATER ABSORPTION||D 471 IMMERSE 0.75|
BY 2-IN.SPECIMEN IN
DISTILLED WATER AT
70ºC FOR 48 hrs
|INCREASE OF 10%, MAX.|
OR ORIGINAL BY WEIGHT
|OZONE RESISTANCE||D 1171||RATING 0||PASS|
|D 746||NO FRACTURE AT -40ºC||PASS|
|TEAR RESISTANCE||D 624, METHOD B||200 LBF/IN. (MIN.)||215 LBF/IN|
A Waterstop Grout Ring shall be employed in the connection of storm water pipes and other non watertight applications to precast concrete or poured in-place structures to help control infiltration and exfiltration and to meet the requirements of ASTM D 2321 Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications, Section 7.10-Manhole Connections.
The Waterstop connector shall consist of a rubber gasket and an external take up clamp to secure the Waterstop to the pipe before grouting or pouring in place. The rubber Waterstop shall be constructed solely of synthetic or natural rubber and shall meet and or exceed the physical property requirements of ASTM C 923, ASTM C 1478, and ASTM F 2510.
Minimum thickness of the cross section shall be 0.30 inches (7.6mm) and a minimum of 3-inches (76.2mm) in length. The Keylock portion shall extend into the concrete a minimum of 1.5-inches (38mm) to provide an adequate anchorage for mortar. Non-shrink grout shall be placed around the entire Waterstop and maintain a minimum thickness of 2-inches (50mm) between the rubber gasket and any existing or hardened concrete to permit proper consolidation around the Waterstop connection.
The external take-up clamp shall be constructed of Series 300 non-magnetic stainless steel and shall utilize no welds in its construction.
Selection of the proper size Waterstop and any in field testing requirements shall be in strict conformance with the recommendations of the Waterstop manufacturer. The Waterstop Grout Ring shall be WS-30 Series Waterstop as manufactured by Press-Seal Corporation of Fort Wayne, Indiana or approved equal.