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fabric reinforced diaphragm specification

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2001 SCEF Standard Specification
Tooth Dam Expansion w/Trough
(October 24, 2001)

 fabric reinforced diaphragm specification

2.3 GENERAL: This work includes the construction of a tooth expansion joint with a fabric reinforced drainage trough for highway bridge joints. Provide materials and workmanship in accordance with individual Department of Transportation's requirements, AASHTO/AWS Welding Specifications, the Contract Documents, and this Specification.

2.1 Fabricated Structural Steel: Shall conform to AASHTO M270/ASTM A707 Grade 36, shop coated with approved system, unless noted otherwise.
2.2 High Strength Bolts: Shall conform to AASHTO M164/ASTM A325.
2.3 Flat Washers: Shall conform to AASHTO M293/ASTM F594.
2.4 Stud Anchors: Shall conform to AASHTO M169/ASTM A593.
2.5 Flat Head Countersunk Screws: Shall conform to ASTM F738 Type 304 (Stainless Steel).
2.6 Galvanizing: Shall conform to AASHTO M111 (ASTM A123), with a minimum of 2 oz. of zinc per square foot.
2.7 Polyester Fabric: Shall meet the following requirements:

  • Number of Plies 2
  • Minimum Fabric Weight (oz./sq. yd.) 7.5
  • Minimum Tensile Strength (lbs./in.) (ASTM D378) 425


  • Dimensions and details are shown in section or plan are typical.
  • For dimensions D, D0, T, A, B, X, and Y refer to design drawings. A = distance from top of deck slab to top of stringer at c/l bearings and B = distance from top of diaphragm to top of stringer.

fabric reinforced diaphragm specification

Fabric-Reinforced Diaphragms Offer:

  • Positive Seal
  • Low Spring Rate
  • No Lubrication
  • No Breakaway Force
  • No Friction
  • High Strength
  • Functionality Over Wide Pressure Ranges
  • Low Cost
  • Simple Design
  • Versatility
  • Therefore, fabric reinforced diaphragm specification is widely used for many applications.






Dia•Com is a leading international provider of innovative, cost-effective molded diaphragm and fabric reinforced diaphragm specification solutions critical to the operation of essential systems and equipment in industrial, automotive, aerospace, medical instrumentation, and food and water processing applications. The company's reputation for excellence is based on superior quality in the design, manufacture and application of its high-performance, state-of-the-art, fabric-reinforced and homogeneous elastomeric diaphragm seals.

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