1008PREFORMED NEOPRENE COMPRESSION JOINT SEAL FOR BRIDGES

FOR BRIDGES

1008.1DESCRIPTION—This work is the furnishing and installation of preformed neoprene compression

seals for bridge joints.

1008.2MATERIAL—

the District Executive as to the brand of seal to be furnished. Provide a data sheet from the manufacturer showing the nominal dimensions and allowable joint openings for the seal to be furnished. Do not change the brand, except with written permission from the District Executive.

do not apply.

1008.3CONSTRUCTION—

the basic joint, top to bottom, to the width as indicated. Place two strips of foam joint filler in the joint, with one strip placed tightly on top of the other. Provide a depth of the upper strip equal to the depth of the seal groove plus 3/4 inch. After the joint is sawed, remove this upper strip of foam with the broken concrete.

seal groove width is the width of the formed basic joint plus the seal seating ledge on each side of the joint, provided by the sawcut. Provide a seal groove width and depth according to the manufacturer’s recommendations. Make joints true to alignment, ±1/4 inch, having vertical faces and uniform width throughout the length of the joint.

saw to the width and depth according to the manufacturer’s recommendations . Begin the saw -cut at the centerline of the bridge and proceed beyond the gutter line in one operation. Use a saw speed that minimizes spalling. Provide smooth, even seal seating ledges. Grind 1/8 inch to 1/4-inch x 45 -degree chamfer at the top corners along the entire length of the sawcut.

shown on the Standard Drawings. Grind 1/8 inch to 1/4-inch x 45-degree chamfer at the top corners along the entire length of the sawcut.

preparation and installation recommendations. Before installing the seal, remove foreign material, including broken concrete, and thoroughly clean the joint according to the manufacturer’s recommendations. Keep the joint in a dry or damp-dry condition. Swab the lubricant adhesive on the faces of the groove , and while the adhesive is wet, install the seal according to the manufacturer’s recommendations. Install the seal with the top surface continuous. Upturn seal continuous into barriers, curbs, and sidewalks as shown on the Standard Drawings. Do not install cocked or twisted seals. At walls, place the top of the seal in contact with the deck joint at a uniform depth of 1/4 inch minimum to 1/2 inch maximum below the deck surface. Ensure seals are waterproof at the gutter line.

Do not splice the seal u nless indicated. If splices are indicated, use only if splices are vulcanized and spliced by the manufacturer in the shop/factory and are watertight. If necessary to stretch the seal during installation, do not exceed 5% elongation. If the seal is damaged during installation, remove and install a new seal. Seal or cap the ends of the seal. After installation, flood seal with water and inspect for leaks and/or damage. Repair any leaks or damage as directed and according to the manufacturer’s recommendations.

1008.4MEASUREMENT AND PAYMENT—Linear Foot

Measured out-to-out along centerline of seal, including horizontal, vertical, inclined, or curved portions.