487 SECTION 624 PREFORMED ELASTOMERIC JOINT SEALER
624.1 -DESCRIPTION : This work shall include furnishing and installing preformed elastomeric joint sealers for bridge decks in accordance with these Specifications and in reasonably close conformity with the lines and grades shown on the Plans or established by the Engineer. The joint sealer, to serve both as a filler and a sealer, shall be furnished in the form of an extruded compartmented tube .
624.2 -MATERIALS : Material for preformed elastomeric joint sealer shall conform to the requirements of subsection 708.2.
624.3 -PREPARATION OF JOINT : The joint shall be formed to provide the nominal opening at the specified temperature as shown on the Plans, edges of concrete or epoxy mortar adjacent to the joint shall be rounded t o a radius of not more than ¼ inch. A joint having insufficient opening may be required to be sawed or ground to the proper size. Where a joint opening is larger than that specified, the Contractor may be required to build up the joint with epoxy mortar or to furnish a larger size sealer as determined by the Engineer. The cost of any such additional work or material shall be borne by the Contractor. Before placement of the sealer, the joint shall be thoroughly cleaned by brushing, compressed air or othe r means, so that it is free from dust, oil, grease or other foreign materials.
624.4 -INSTALLATION : The sealer shall be installed by suitable hand or machine tools which will not cause injury to the material during installation. A lubricant or lubricant -adhesive shall be used if, and as, recommended by the manufacturer of the sealer. During installation, the sealer shall not be subjected to lengthwise stretching; the length to be installed sha ll be measured prior to installation and cut or marked to indicate the installed length. Sealer for transverse joints shall be in one continuous length; longitudinal joint sealers may be spliced at intervals of not less than fifty ( 50) feet except where i ntersected by transverse joints. The top surface of the sealer after installation shall be ¼ inch, with a plus 1/16 inch tolerance, below the adjacent roadway surface.
624.5 -METHOD OF MEASUREMENT : When this Item is called for on the Plans, the filler and joint sealer will be measured in place in linear feet.
624.6 -BASIS OF PAYMENT : The cost of preformed elastomeric joint sealer, complete in place, including lubricant or lubricant -adhesive will be paid for at the contract unit price bid for the item listed below, which price and payment shall be full compensatio n for furnishing all the materials and doing all the work prescribed in a workmanlike and acceptable manner including all labor, tools, equipment, supplies and incidentals necessary to complete the work.
624.7 -PAY ITEM : ITEM DESCRIPTION UNIT 624001 -* Preformed Elastomeric Joint Sealer Linear Foot
* Sequence number
488 SECTION 625 ROCK SOCKETED DRILLED SHAFT
625.1 -DESCRIPTION : The work of this section includes the furnishing of all materials and the construction of rock socketed drilled shaft foundations consisting of reinforced concrete placed within the drilled excavatio ns. Each rock socketed drilled shaft foundation shall consist of an upper drilled shaft portion in a steel casing and a lower rock socket portion.
625.2 -SUBMITTALS : The Contractor shall deliver all s ubmittals required by this specification to the Engineer no later than one month prior to constructing any rock socketed drilled shafts shown in the plans. No rock socketed drilled shafts shall be constructed prior to the Engineer ’s review and acceptance of all submittals.
625.2.1 -Experience:
utmost importance in obtaining a satisfactory rock socketed drilled shaft installation. The installation of the drilled shaft is required to be performed by a contractor or special ty subcontractor specializing in installing and having experience with rock socketed drilled shafts of similar length, diameter, and subsurface conditions as those shown in the contract documents.
years, for which the Contractor, or Contractor’s key personnel who will be the on -site supervisor, have installed rock socketed drilled shafts of a range of diameters and lengths similar to those shown in the plans, in similar quantities, and under similar subsurface conditions. The list of projects shall contain names and phone numbers of owners ’ representatives who can verify the participation in those projects.
qualifications. If in the opinion of the Engineer the Contractor’s qualifications are not adequate, the Contractor shall submit to the Engineer a proposed method of obtaining the necessary qualifications.
placement, concrete placement, and required wet hole condition work, casing installation and removal, slurry placement, and any other work required to complete the rock socketed drilled shaft, shall be perfo rmed by the approved contractor or specialty subcontractor.
625.2.2 -Site Inspection: A signed statement shall be submitted affirming that the Contractor (or the Subcontractor if applicable) has inspected the project site and the available subsurface information including any available soil or rock samples.
625.2.3 -Installation : The Contractor shall comply with applicable environmental regulations, including but not limited to the protection of river/stream water from degradation due to material exca vated from rock socketed drilled shaft locations or due to other harmful erosion, protection of the environment from slurry spillage or discharge if slurry is used, and general environmental protection of the area from all operations related to rock socketed drilled shafts.