515WATERPROOFING AND DAMPPROOFING

386

Asphalt Plank Protection Layer. Over the waterproofing membrane constructed as specified in Subarticle (a) above, there shall be constructed a protection layer of plain asphalt plank 1.25 inches {32 mm} thick, Whole planks, in regular, straight courses, shall be used except as required to make closures and trim around openings and obstructions. Closing and trimming pieces shall be carefully cut to size. The entire surface of the membrane shall be covered with the plank. Before laying, all surplus talc or other powder shall be removed from the plank with a stiff brush or broom. Each plank shall be laid in a mopping of hot asphalt and the edge and end of planks in place shall be coated with hot asphalt before the next plank is placed. The asphalt used for this purpose shall be the same as that used in building up the membrane. Each individual plank shall be crowded tightly against the adjacent plank and the completed work shall have a uniform smooth surface without open cracks or spaces.

Waterproofing materials for Class D Waterproofing shall be installed in accordance with the manufacturer's requirements. No backfilling shall be done without the permission of the Engineer. Backfill shall be placed in such a manner that the waterproofing will not be damaged. No stones, broken concrete, bricks, or other material likely to damage the waterproofing material shall be placed adjacent to waterproofed surfaces.

The provisions of Subarticle (a) above shall govern.

Surfaces to be dampproofed shall be given one coat of hot primer before the first mop coat. The primer shall be well worked in to give a uniform coating. The priming coat shall be applied approximately 24 hours before applying the first mop coat. The primer shall be dry before this first mop coat is applied. After the primer is dry, the first mop coat of asphalt shall be applied hot over the entire surface to be dampproofed and well worked in. After the first mop coat is dry, a second mop coat shall be applied. The amount of material for each mop coat shall be not less than 4.5 gallons per hundred square feet {2 L/m²} of surface. Asphalt shall not be heated above a temperature of 350 ºF {175 ºC}. The material shall be stirred frequently while being heated. Kettles shall be equipped with armored thermometers and oil jackets. Backfilling shall be as provided by Subarticle (a) above.

515.04Method of Measurement

The quantity of Waterproofing and Dampproofing to be paid for under this Section shall be the actual number of square yards {square meters} of waterproofing of the various types as previously described and dampproofing, respectively, measured in place, completed and accepted.

515.05Basis of Payment

The quantity of Waterproofing and Dampproofing, measured as provided above, will be paid for at the contract unit price per square yard {square meter} for the particular type of waterproofing specified, which price and payment shall be full compensation for furnishing and placing all materials, including the protection course, and for all equipment, tools, and labor necessary for the satisfactory completion of the work.

515-A Class ____ Waterproofing - per square yard {square meter} 515-B Dampproofing - per square yard {square meter} BRIDGE AND SIDEWALK HANDRAIL 387

BRIDGE AND SIDEWALK HANDRAIL

517.01Description

This Section shall cover the work of fabricating, furnishing, and installing handrail on structures in accordance with details and at the location shown on the plans, all in conformity with the requirements noted herein or shown on the plans.

517.02Materials

Materials used in fabrication and installation shall conform to the applicable Section of the Specifications that the structure to which the railing is to be attached was constructed, the details shown on the plans, and the following:

53, Grade B; this grade of pipe to include rail elements and post.

with AASHTO M 111.

Class C, with nuts tapped after galvanization in accordance with ASTM A 563 {A 563M}.

galvanized after fabrication in accordance with AASHTO M 111.

Class C, with nuts tapped after galvanization in accordance with ASTM A 563 {A 563M}.

provided in Sections 630 and 864.

steel sidewalk handrail shall meet the requirements specified on the plans.

requirements of Section 501 and the details shown on the plans.

517.03Construction Requirements

Rail shall be erected in accordance with the best construction practices and in conformity with lines, elevations, and other details indicated on the plans. The plans will show construction details and will specify the type or alternate types of handrail to be used. Where the Contractor is permitted to choose the type rail he wishes to use, he shall indicate in the proposal his choice. One type, once selected, shall be used throughout the project.

517.04Method of Measurement

The accepted bridge and sidewalk handrail will be measured in linear feet {meters}, to the nearest 0.1 of a foot {0.1 m}, along the axis of the top rail between extreme limits of the handrail without deductions for laps, posts, or joints. All stair railing, posts, and appurtenances for one stair tower, including pipe railing on the superstructure but not a part of the bridge or sidewalk handrail, installed and accepted complete in place will be measured as one set of stair railing. No measurement or separate payment will be made for post or miscellaneous hardware required for installation of handrail and stair railing, such being considered incidental to the installation of the rail.

517.05Basis of Payment

The number of linear feet {meters} of bridge and/or sidewalk handrail and the number of sets of stair tower handrail, measured as provided above, will be paid for at the contract unit prices of the appropriate pay items complete in place, which shall be payment in full for all materials including rail elements, posts, hardware, and paint; for forms; for constructing, bracing, and erecting; and for all equipment, tools, labor and incidentals necessary to complete the items in accordance with plans and specifications.