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Mound Road <br /> Over Stevens Creek <br /> Section 19-00935-00-BR <br /> SN 058-3062 ' <br /> City of Decatur <br /> Construction Requirements: The Contractor shall submit details and calculations, prepared and <br /> sealed by an Illinois Licensed Structural Engineer, of the support system he/she proposes to <br /> use for approval of the Engineer prior to ordering of material and implementation. Such approval <br /> shall in no way relieve the Contractor of responsibility for the safety of the structure. The ' <br /> supports used shall be such that vertical adjustments may be made in order to maintain the <br /> existing beam profile. Prior to starting substructure repairs, the temporary supports shall be <br /> used to place an upward reaction on the affected beams designated in the plans, equal to but ' <br /> not larger than the dead load reactions given in the plans, thus relieving the superstructure dead <br /> load reaction from the substructure unit to be repaired. It is not the intention to raise the affected <br /> beams. As the vertical load is incrementally increased to the specified load, if vertical movement <br /> is detected the load shall not be increased further. <br /> Additionally, if the work is to be completed under stage construction without traffic directly over <br /> the beams being shored then the Temporary Shoring and Cribbing shall be designed to carry ' <br /> the Dead Load plus 1/2 (Live Load + Imp) as shown in the plans. If work is to be completed with <br /> traffic directly over the beams being shored then the Temporary Shoring and Cribbing shall be <br /> designed to carry the Dead Load plus full (Live Load + Imp) as shown in the plans. , <br /> Basis of Payment: The work specified herein, as shown on the plans and as directed by the <br /> Engineer, shall be paid for at the contract unit price EACH for TEMPORARY SHORING AND <br /> CRIBBING for each beam support location required. <br /> SLOPE WALL CRACK SEALING ' <br /> Description: This work shall consist of sealing cracks in slope wall with a non-sag elastomeric <br /> polyurethane sealant. <br /> Materials: Materials shall be according to the following: ' <br /> (a) Non-sag Elastomeric Polyurethane Sealant meeting the requirements of ASTM C-920, Type <br /> S, Grade NS, Class 35, Use T. ' <br /> CONSTRUCTION REQUIREMENTS <br /> General: The sealing material shall be applied to the cracks or portions thereof that are ' <br /> detailed in the plans or as directed by the Engineer at the time of construction. <br /> The areas for slope wall crack sealing shall be prepared by removing all dust, debris, or <br /> disintegrated material from the crack by the use of oil-free compressed air. Any cracks holding <br /> oil or grease shall be chipped out to clean concrete. For cracks deeper or wider than 1/4 inch, a <br /> Backer Rod should be placed in the crack before applying the sealant. The backer rod <br /> diameters shall be 1/8 inch wider than the crack width. The backer rod shall be a closed-cell, , <br /> plastic-foam, chemically inert, waterproof rod compatible with the sealant used. <br /> The sealant shall be applied according to the manufacturer recommendations and as directed <br /> by the Engineer. Excess sealant should be cleaned up immediately. <br /> Method of Measurement: This work will be measured for payment in place in feet. ' <br /> Basis of Payment: The work specified herein, as shown on the plans and as directed by the , <br /> Engineer, shall be paid for at the contract unit price per FOOT for SLOPE WALL CRACK <br /> SEALING. <br /> 2 <br />