508.1 General Description
This work consists of laying asphalt plank slabs as a wearing surface on a prepared bridge deck.
508.1.01 Definitions
General Provisions 101 through 150.
508.1.02 Related References
A. Standard Specifications Section 530—Waterproofing Fabrics B. Referenced Documents General Provisions 101 through 150.
508.1.03 Submittals
General Provisions 101 through 150.
508.2 Materials
Ensure that materials meet the requirements of the following Specifications: Material Section Pre-molded Asphalt Plank 825.2.01 Cutback Asphalt 821.2.01 Asphalt Cement 820.2.01
508.2.01 Delivery, Storage, and Handling
General Provisions 101 through 150.
508.3 Construction Requirements
508.3.01 Personnel
General Provisions 101 through 150.
508.3.02 Equipment
General Provisions 101 through 150.
508.3.03 Preparation
General Provisions 101 through 150.
508.3.04 Fabrication
General Provisions 101 through 150.
508.3.05 Construction
Construct the wearing surface of asphalt plank on a concrete base, timber base, or waterproofed base as follows: A. Concrete Base When laying the plank on a concrete base, construct the plank floor as follows: 1. Ensure that the concrete is dry and free from dust and rubbish. 2. Remove surplus talc and other powder from the base. 3. Apply approximately 1-gal (1 L) of cold cutback asphalt to each 100 ft.² (9 m²) of surface. 4. Brush the cutback asphalt coat out well and allow it to dry. 5. Mop the surface with approximately 50 lbs. (22 kg) of hot-applied asphalt cement for each 100 ft.² (9 m²) of surface. Imbed the plank in the cement as follows: a. Mop and lay the plank simultaneously before the cement cools. b. Lay the plank straight and smooth with staggered joints. Ensure that the plank is free of irregularities. c. Crowd each plank snugly against adjacent planks so that seams and spaces between planks are completely filled with asphalt cement. B. Timber Base When laying the plank on a timber base, construct the plank floor as follows: 1. Securely spike the wooden floor upon which plank will be laid. 2. Ensure that the surfaces of adjacent planks do not vary by more than 1/8 in. (3 mm). 3. Remove nails, dirt, rubbish, etc. before laying the asphalt plank. 4. Lay the plank the same as for a concrete base (see Subsection 508.3.05.A, Concrete Base). C. Waterproofed Base When laying the plank on a waterproofed base (see Section 530), lay the plank with the final mop of hot asphalt or tar described in Subsection 508.3.05.A.5. 1. Mop the surface and lay the plank simultaneously before the asphalt or tar cools. 2. Lay the plank as specified in Subsection 508.3.05.A.5 steps b and c.
508.3.06 Quality Acceptance
General Provisions 101 through 150.
508.3.07 Contractor Warranty and Maintenance
General Provisions 101 through 150.
508.4 Measurement
The Work is measured for payment in square yards (meters) of accepted plank: • The length calculated is measured along the surface. • The width calculated is the width of surface laid.
508.4.01 Limits
General Provisions 101 through 150.
508.5 Payment
This work will be paid for at the Contract Price per square yard (meter) for asphalt plank bridge floor complete in place. Payment will be made under: Item No. 508 Asphalt plank bridge floor _____ in (mm) thickness Per square yard (meter)
508.5.01 Adjustments
General Provisions 101 through 150.
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