5-131 Immediately prior to the installation of the seal element, the metal contact surfaces of the joint armor shall be clean, dry, and free of oil, rust, paint, or foreign material. Unless otherwise recommended by the seal manufacturer, the contact sur faces of the seal element shall be cleaned with normal but yl-acetate, using clean rags or mops, immediately prior to application of the lubricant-adhesive or sealant. The lubrican t adhesive or sealant shall be applied to the seal element and joint armor contact surfaces at the rate recommended by the manufacturer of the seal. The exposed ends of compression seals shall be sealed with appr opriately shaped pieces of foam rubber, bonded in place with sealant as described in Se ction 714.04, Sealant, or a bonding agent approved by the Resident.
520.07 Method of Measurement Expansion devices will be measure d by each unit,
complete in place and accepted. Each unit shall consist of one pair of matching elements, including anchorage system, seal, shipping and temperature adju stment devices, curb and sidewalk expansion dams and barrier sliding plates, as required .
520.08 Basis of Payment The accepted quantity of expansion dev ices will be paid for at
the Contract unit price each, which shall be full compensation for all materials including anchorage system, protective coating, equipment, labor and inci dentals necessary for furnishing and installing the expansion devices and, if require d, curb and sidewalk expansion dams and barrier sliding plates. Payment will be made under: P a y I t e m P a y U n i t
520.21 Expansion Device - Gland Seal Each 520.22 Expansion Device - Compression Seal Each
SECTION 521 - FINGER JOINT AND FABRIC TROUGH/FABRIC CURTAIN
521.01 Description This work shall consist of fabricating and installing finger joint
expansion devices and fabric troughs or fabric curtains when re quired, including the anchorage system, curb and sidewalk expansion dams, barrier sli ding plates as required, support components for fabric troughs or curtains when required , and any metal downspout(s) and/or chute(s) use d to guide the discharge from t he trough(s) when required, and all necessary materials and equipment required to complete the work as shown on the Plans and in accordance with these specifications.
521.02 Materials - Finger Joints Plates requiring a non-skid s urface shall conform to the
requirements of ASTM A786 or ASTM A36. Other plates shall conf orm to the requirements of ASTM A36 or AST M A572. Shapes shall conform to the requirements of ASTM A500, Grades A and B, or ASTM A992. Other weldable steels may be used with 5-132 approval of the Fabrication Engi neer. Anchor studs shall confo rm to the requirements of Section 711.06, Stud Shear Connectors, Anchor and Fasteners. B olts shall conform to the requirements of AASHTO M169 (ASTM A325).
521.03 General All work shall conform to the applicable provis ions of Section 504,
Structural Steel. Completed e xpansion devices and any required support components for troughs or curtains, expansion dams, barrier sliding plates, do wnspouts and chutes shall be hot dipped galvanized to the requi rements of AASHTO M111 (ASTM A123). Anchorage parts encased in concrete may be supplied in the ungalvanized c ondition. Each expansion device shall be shipped fully assembled, shall b e installed as a unit, and shall be equipped with shipping and temperature adjustment devi ces approved by the Resident. When a project is built in stages, and if desired by the Contractor, the expansion device may be shipped in two or more sections, as approved by t he Fabrication Engineer, with appropriate provisions for field splicing.
521.04 Materials- Fabric Trough or Curtain The fabric for the trough or curtain shall be
⅛ to 3/16 inch in thickness and shall consist of a single layer of 14.6 ounce woven nylon fabric, or the equivalent in multiple layers of woven nylon fab ric, laminated between two or more layers of neoprene rubber. The neoprene shall conform to the following requirements: Physical Properties: G r a d e ( D u r o ) 60 Original Physical Properties 60 +/- 5 Hardness ASTM D2240 Tensile Strength, Minimum 850 psi ASTM D412 Elongation at Break, Minimum Accelerated 300% Test to Determine Long Term Aging Characteristics Oven Aged - 70 Hours/212ºF, ASTM D573 Hardness, Points Change, Maximum +15 Tensile Strength, Change, Maximum - 15% Elongation at Break, Change, Maximum -40% Ozone - 1 PPM in Air by Volume 20% Strain No cracks 100 +/- 2ºF - ASTM D1149* 100 hours (*Samples shall be solvent wiped before test to remove any traces of surface impurities.) Compression Set - 22 Hours/ /212ºF ASTM D395 - Method B, 0/0 Maximum 35% ASTM D746 - Procedure B -40ºF Brittleness at No Failure Fluid Resistance - ASTM D471 70 Hours/212ºF in ASTM Oil No. 3