Expansion Joints. The premolded expansion joint filler and sealer shall be as indicated on the drawings or as herein specified. The premolded joint filler shall be: Preformed resilient, bituminous-type filler, conforming to ASTM D994-71. The filler strips shall be the full depth of the indicated ½-inch thick joint. The Contractor shall provide smooth #5 bar dowels at all expansion joints and install the dowels with expansion caps as detailed at intervals of 18 to 24 inches on center. The Contractor shall drill holes 18” minimum on center for the sliding end of dowels, in existing abutting stone or masonry to prevent surface differential movement as indicated on the plans or as directed by the Engineer. The Contractor shall provide premolded joint filler for joints abutting curbs, manholes, hydrants, telephone poles and other fixed objects, unless otherwise indicated or directed. Expansion joints shall be provided at approximately 30 feet on centers at the nearest even multiple of the scoring interval. The joint filler shall extend full width and full depth of joint and shall have a cap insert or other suitable device to maintain a full joint width and an open joint of not less than ½ inch or more than 1 inch for the joint sealer. The joint sealer shall be of the polyurethane type (conforming to A.S.T.M. C920 Class 25).
Expansion Joints. Performed expansion joints shall be ½” bituminous impregnated expansion joint filler, type conforming to ASTM D994, or approved equal place where shown on the plans. The joint filler material shall be placed according to the manufacturer’s recommendations. The joint filler material shall be placed such that it’s top surface is one inch below the top surface of the new concrete. Joint sealant shall be a multi-component polyurethane type and shall comply with ASTM C920, Class 25. Joint sealants shall be installed according to the manufacturer’s recommendations. The Contractor shall supply smooth #35 bar dowels at all expansion joints and install the dowels, with expansion caps, 18” on center. Dowels shall be a minimum of 14” long. Depth of the dowels not shown of the plans or specified shall be as directed by the Engineer. Expansion joints for retaining walls shall be placed 90’ on center maximum, intermediate construction joints shall be placed 30’ on center maximum.
Expansion Joints. Joints shall be accurately depicted.
Expansion Joints. Expansion Joints shall be provided in the buildings wherever required. The conditions for providing expansion joints are as under:
Expansion Joints. TS-344 The expansion joints shall generally be of 10mm thick fiberboard impregnated with bitumen accurately cut, with butt joints and fixed vertical and straight .The top 10mm of the joint shall be filled with a grey polyurethane gun grade sealant which confirms with BS 4254. TS-345 Expansion joints shall continue into the tilted tile, skirtings and fillets.
Expansion Joints. 2.2.7 The interior of liquid fuel and natural gas piping
Expansion Joints. Expansion joints shall be avoided, as far as practicable, in covered slabs where no major temperature variations are observed.
Expansion Joints. For concrete structures retaining aqueous liquid, all eventual expansion joints are designed to accommodate repeated movement of the structure without loss of liquid. The joint is designed to suit the characteristics of the material available and should also provide for the exclusion of grit and debris that would prevent the closing of the joint. Detailing of places where the joint changes direction /or/ intersects with another joint should be uncomplicated. The expansion joint: At an expansion joint the Contractor shall provide a complete discontinuity in both reinforcement and concrete. An initial gap should be provided between adjoining parts of the structure to accommodate the expansion /or/contraction of the structure. Waterstop, joint fillers and joint sealing compounds are essential. The Joint Filler An elastic joint filler material cut in sheets of the thickness specified and/or shown on the drawings, shall be: − either placed in the forms before the first placed concrete is cast. − or, may be attached to the first placed concrete surface means approved by the Engineer. The elastic filler materials shall be of a quality approved by the Engineer and shall conform to US Federal Specification H-H-F-341a, or to a similar approved standard. Where the exposed sides of the joint are filled with an elastic joint sealant approved by the Engineer, sheets of foamed polystyrene may be substituted for the above described elastic filler. The sheet of filler material, shall be cut to fit the entire contact surfaces of the complete side of the joint. Where a waterstop is installed in the joint, the filler materials shall be placed on both sides of the waterstop so as to fit snugly about the bulb of the waterstop. Except where a groove for joint sealant is to be formed, the edges of the filler materials shall be placed flush with the finished surface of the concrete /or/ the bottom of the chamfers. Joints in the filler shall be made tight so that mortar from the concrete will not seep through to the opposite concrete surface. N.B.: Joint sealing compound cannot be expected to provide a liquid-tight seal for more than a proportion of the life of the structure and waterstops should always be provided in movement joints by the Contractor and installation must follow the recommendations of the manufacturer.
Expansion Joints. After the curing process for the overlay is completed, install new expansion joint sealing systems according to Section 449 of the Standard Specifications.
Expansion Joints. If used shall be high-alloy or annealed austenitic stainless and designed to withstand or protected against infrequent water-hammer events.
