2481.1DESCRIPTION
This Work consists of waterproofing joints.
2481.2MATERIALS
2481.3CONSTRUCTION REQUIREMENTS
A General Remove form ties, fill cavities with mortar, and remove sharp protrusions before waterproofing . Before applying the primer, ensure the concrete has cured for 72 hours and is clean, dry, smooth, and free of voids. Clear the concrete of dust and other loose Material immediately before applying the primer. Apply the waterproofing system in dry, fair weather when the air temperature is above 40 °F. Protect waterproofing against damage during succeeding construction operations . Repair damaged waterproofing as approved by the Engineer, at no additional cost to the Department. B Membrane Waterproofing System Provide a self-adhering strip of waterproofing membrane at least 12 inches wide listed on the APL for the membrane waterproofing system. Prime the surface on the joint as recommended by the manufacturer. Center the membrane on the joint. Provide polyethylene sheeting with a thickness of 4 mils and provide rubberized asphalt with a Nominal thickness of 0.06 inches, for a total Nominal thickness of 0.06 inches. Ensure the face of the rubberized asphalt opposite the face bonded to the sheeting includes a removable covering. Allow the removable covering to remain on the membrane until placement of the membrane. The Contractor may make splices in the joint waterproofing membrane using an overlap of at least 6 inches at the splice. For splices on vertical face joints, ensure the upper strip overlays the lower strip.
2481.4METHOD OF MEASUREMENT
The Engineer will measure joint waterproofing by the length of the joints waterproofed.
2481.5BASIS OF PAYMENT
The Department will pay for joint waterproofing only if the Contract contains a specific Pay Item for waterproofing. If the Contract does not specify a Pay Item for waterproofing, the Department will include the cost of Joint waterproofing with other relevant Contract Unit Prices. The Department will pay for waterproofing on the basis of the following schedule: Item No. Item Unit
2481.503 Joint Waterproofing linear foot
Miscellaneous Construction
Waterproofing in other states
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