00503.00 412 Section 00503 - Bridge Deck Cold Plane Pavement Removal Description
00503.00 Scope - This Work consists of removing existing Pavement from bridge deck and bridge
approach slab surfaces . Equipment
00503.20 Equipment for Grinding on Bridge Decks - To remove Pavement from bridge decks and
bridge approach slab s, use micro -milling Equipment consisting of either cold plane or rotomill grinding machines that have carbide cutting tools on a rotary drum. Provide Equipment with a tooth spacing of not more than 1/4 inch, capable of leaving a smooth, uniform pattern of striations. Limit the gross operational weight of machines to comply with the load limitations of 00220.45. Limit machines to a forward speed of 2.5 feet per minute. Operate at a drum speed of at least 120 RPM. Construction
00503.40 Pavement Removal on Bridges - Remove Pavement from Bridge s according to the
following:
a.General: Do not grind into the existing concrete bridge deck or bridge approach slab. Before removing the wearing surfaces, do the following: • Determine the actual depth of Pavement to be removed. • Block all deck drains and all catch basins. Do not allow any grinding, chipping, sweeping, flushing, or shot blasting material to enter them. Remove all material that is within 12 inches of joints in a manner acceptable to the Engineer. Do not damage any joints. Remove AC, laitance, and residual film by approved hand methods in areas that cannot be reached by grinding machines. Repair all damage to abutting concrete surfaces or other surfaces that are damaged by the Contractor's operations at no additional cost to the Agency.
b.Scheduling - Schedule the Work so the full width and length of travel lane Pavement can be removed during the same shift. Remove the Shoulder area within 24 hours after removing the travel lane Pavement . If the depth of the existing Pavement to be removed is over 2 inches, then within the same Day construct a wedge of asphalt concrete, at a Slope of 1V:10H or flatter along each exposed longitudinal drop- off, and 1V:50H or flatter along each exposed transverse drop- off. Place we dges completely across the milled area at joints, deck drains, catch basins, and other Structure s. Maintain wedges as long as the area remains under traffic or until Pavement is replaced. Remove and dispose of wedges before placing new Surfacing s.
00503.41 Surface Tolerance - Test with a 12 -foot straightedge furnished and operated by the
Contractor, as directed. The variation of the top of the ridges from the testing edge of the straightedge, between any two ridge contact points, shall not exceed 1/4 inch.
00503.42 Disposal of Materials - Dispose of all materials according to 00290.20.
00503.90 413 00503.43 Maintenance Under Traffic - If the cold planed Pavement surface will be exposed to traffic, sweep and clean prior to allowing traffic to use the Roadway . Measurement
00503.80 Measurement - The quantities of Work performed under this Section will be measured on
the area basis. When the depth of Pavement to be removed is var iable, the depth is an estimate and will be considered approximate only. No guarantee is made that the actual depth will be the same as the estimated depth. Payment
00503.90 Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement , for the following items: Pay Item Unit of Measurement
a.Bridge Deck Cold Plane Pavement Removal, ____ Deep .............. Square Yard
b.Bridge Approach Slab Cold Plane Pavement Removal, ____ Deep Square Yard In items (a) and (b), t he depth will be inserted in the blank. If the depth is variable, the depth range will be inserted in the blank. Payment will be payment in full for furnishing all Equipment , labor, an d Incidental s necessary to complete the Work as specified. No separate or additional payment will be made for constructing, maintaining, and removing temporary wedges or for removal of fabric membranes .
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 478–479 of 1,268. View official source ↗