5-129 Payment will be made under: Pay Item Pay Unit
519.60 Expansion Device - Asphaltic Plug Joint Linear F oot
SECTION 520 - EXPANSION DEVICES - NON-MODULAR
520.01 Description This work shall consist of furnishing and i nstalling expansion
devices including the seals, anchorage system and curb, sidewal k expansion dams and barrier sliding plates, where required, as shown on the Plans, in accordance with these specifications and per the seal manufacturer’s published recomm endations. Seals for expansion devices shall be either gland seals or comp ression seals as specified on the Plans.
520.02 Materials Materials shall meet the requirements specifi ed in the following
Sections of Division 700 - Materials: Expansion Device - Gland Seal Stud Shear Connectors, Anchors and Fasteners 711.06 Structural Steel 713.01 High Strength Bolts 713.02 S t e e l E x t r u s i o n s 713.08 E l a s t o m e r f o r S e a l E l e m e n t s 714.01 L u b r i c a n t A d h e s i v e 714.03 Gland Type Seals 714.06 Expansion Device - Compression Seal Stud Shear Connectors, Anchors and Fasteners 711.06 Structural Steel 713.01 High Strength Bolts 713.02 Elastomer for Seal Elements 714.01 Lubricant Adhesive 714.03 S e a l a n t 714.04 Compression Seals 714.05 Gland and compression seals shall be of the general configurati on as shown on the Contract documents and shall be one of the seals listed on the Department’s Qualified Products List.
520.03 Fabrication All work shall conform to the applicable pr ovisions of Section 504-
Structural Steel. The Contractor shall submit Working Drawings in accordance with Section 105.7, Working Drawings. 5-130 Seals shall be furnished and installed in one continuous length and splices will not be allowed, except as specified hereafter. As received from the supplier of the seal, seals may contain on e splice for each continuous length of 50 feet or greater. Sections under 50 fee t long shall not have any splices. Splices at abrupt angular changes in horizontal align ment will be allowed. Splices in gland type seals shall be shop vulcanized by the seal suppli er. Splices in compression seals may be either vulcanized or adhesive bonded. At abrupt a ngular changes in vertical alignment, the lower 75 percent of the depth of compression sea ls may be cut to allow short radius bends.
520.04 Protective Coating The expansion device, including the curb and sidewalk
expansion dams and barrier sliding plates, shall be galvanized in accordance with the requirements for Protective Coatings in Section 504, Structural Steel. The galvanizing on the metal surfaces in direct contact with neoprene seals shall be lightly sandblasted to a dull gray appearance in order to promote a high strength bond betwee n the seal and mating surface, and for smoothness for installation purposes. Alterna tely, this galvanized surface may be prepared to the manufacturer’s published recommendations for installation and bonding of seals. When specified on the Contract P lans, reinforcing steel shall b e anchored into drilled holes.
520.05 Delivery Unless otherwise specified on the Plans, expan sion devices shall be
shipped fully assembled and shall be installed as a unit. The unit shall be equipped with shipping and temperature adjustment devices approved by the Fab rication Engineer, and shall be preadjusted, in the fabrication facility, to the openi ng required at 45 degrees Fahrenheit.
520.06 Installation Expansion Devices shall be erected followi ng placement of the
structural deck slab. The devices shall be lowered into the bl ocked-out area of the deck slab, adjusted for the temperature in accordance with the Plans and Working Drawings, set to the proper height and fastened in place, in accordance with the Standard Details. Once the expansion devices are set in their final positions, all shi pping and temperature adjustment apparatuses shall be removed and the concrete for th e slab and abutment backwall blocked-out area shall be placed immediately. Seal elements shall be installed in accordance with the manufac turer's recommendations, using equipment manufactured sp ecifically for the purpose of in stalling the seal elements. The equipment shall not cause structural damage to either the s eal or the joint armor and shall not twist, distort or cause other malformations in the in stalled seal element. Any perforation or tearing of a seal element due to installation pr ocedures or construction activities will be cause for rejection of the installed seal el ement, requiring replacement by the Contractor at no cost to the Department. 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