1721 - FABRIC TROUGH 1700-31
1721.1 Description
This specification covers a material to be installed as a trough below the finger type and sliding plate type expansion joints (or for other applications as shown in the Contract Documents) to carry drainage off the bridge, and prevent saltwater and debris from running down on other bridge members.
1721.2 Requirements
Provide fabric trough material composed of one or two ply tightly woven nylon fabric bonded to, laminated, or covered on both sides with a high density neoprene, ethylene-propylene-diene-monomer (EPDM), or buna-nitrile PVC, that complies with TABLE 1721-1. TABLE 1721-1: REQUIREMENTS FOR FABRIC TROUGH Property Requirement Test Method Thickness (mm) 3 to 5 Mass (g/sq m minimum) 3560 Durometer Hardness (Shore A) 50A to 75A ASTM D 2240 Low Temperature Brittleness (22 hrs. @ -29ºC, then wrapped around a 75 mm diameter mandrel) No Cracks Tensile Strength, kg/25 mm minimum, both directions 363 ASTM D 412 Elongation, %, maximum 35 ASTM D 412 Tear (Die C), kg/25 mm minimum 55 ASTM D 624 Ozone Resistance (100 hours of exposure of 20% elongated samples @ 38ºC and 100 PPHM ozone.) No Cracks ASTM D 1149 Provide material that is resistant to abrasion, sunlight, oils, and saltwater.
1721.3 Test Methods
Use the ASTM methods cited above.
1721.4 Prequalification
None required.
1721.5 Basis of Acceptance
Receipt and approval of a Type B certification as specified in DIVISION 2600, and visual inspection for condition.
Get an email when 1721 changes
Kansas revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.