5-114 the Special Detour is no longer n eeded and is closed to traffic ; the final 20 percent of the lump sum price will be paid when the Special Detour is removed and the area encompassing the Special Detour is acceptably restored. Traffic control devices, tempor ary erosion control, pavement, a nd dust control will be paid for in accordance with the applicable Contract items. Payment will be made under: P a y I t e m P a y U n i t
510.10 Special Detour, ___ foot Roadway L u m p S u m
Width Vehicular and Pedestrian Traffic N o t S e p a r a t e d 510.11 Special Detour, Pedestrian Traffic Only L u m p S u m
510.12 Special Detour, ___ foot Roadway L u m p S u m
Width Vehicular and Pedestrian Traffic S e p a r a t e d SECTION 511- COFFERDAMS
511.01 Description This work shall consist of the complete des ign, construction,
maintenance and removal of cofferdams and other related work, i ncluding dewatering and inspection, required to allow for the excavation of foundation units, to permit and protect the construction of bridge or other structural units and to protect adjacent Roadways, embankments or other structural units, in accordance with the C ontract.
511.02 Materials As specified in the cofferdam Working Drawing s.
511.03 Cofferdam Construction
A.Working Drawings. The Contractor shall submit Working Draw ings, showing the materials to be used and the proposed method of construction of cofferdams to the Department. Construction shall not start on cofferdams until s uch Working Drawings have been submitted. Any review of or comment on, or any lack of review of or comment on, these Working Drawings by the Department shall not result in an y liability upon the Department and it shall not relieve the Contractor of the respo nsibility for the satisfactory functioning of the cofferdam.
B.Construction. Construct cofferdams in conformance with the submitted Working Drawings. Cofferdams shall, in general, be carried below the e levation of the bottom of footings to adequate depths to ensure stability and adequate he ights to seal off water. Cofferdams shall be braced to withstand pressure without buckli ng, secured in place to prevent tipping or movement and be as watertight as necessary f or the safe and proper construction of the substructure Work inside them. With the ex ception of construction of a
Source: Maine Standard Specifications for Road and Bridge Construction, 2020 Edition. Pages 406–406 of 817.