FHWA FP-24Public Domain

Section 558 — Dampproofing

Division 550 — Bridge Construction|PDF pages 550–551

Description

558.01This work consists of dampproofing concrete and masonry surfaces.

Material

558.02Conform to the following Subsection: Dampproofing material 723.01

Construction Requirements

558.03Dampproofing. Cure the concrete or masonry surface according to Subsection 552.13, except do not use liquid membrane curing compound. Allow concrete surface to dry at least 10 days after completion of curing. Apply dampproofing to a dry, clean, and reasonably smooth surface that is free of dust and loose material. Apply dampproofing in dry weather when the air and surface temperatures are 45 °F or higher. Apply primer to the surface and allow it to dry. Apply two coats of asphalt at the rate of approximately 25 pounds per 100 square feet of surface per coat. Apply prime coat and asphalt coats uniformly, covering the surface, and work them into the surface . Allow first coat to dry before second coat is applied. Make the total of the final two asphalt coats approximately 3⁄32 inch thick. Allow asphalt coats to harden before allowing contact with water or backfill material.

558.04Acceptance. Material for da mpproofing will be evaluated under Subsections 106.02 and 106.03. Applying dampproofing will be evaluated under Subsections 106.02 and 106.04.

Measurement

558.05Measure the Section 558 pay items listed in the bid schedule according to Subsection 109.02 .

Payment

558.06The accepted quantities will be paid at the contract price per unit of measurement for the Section 558 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 .

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