02-11-1985 Council Packet - Laserfiche WebLink

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The Contractor shall furnish the weirs and other material and the labor for placing the weirs in the sewers and shall assist the Engineer in making the measurements. The Contractor shall receive no additional compensation for making the leakage tests or corrective work necessary to reduce leakage below the maximum allowed by the specifications. 24,000.7.B. FORCE MAIN PRESSURE. TEST: After the pressure main or force main pipe has been installed and backfil.led as specified, all newly laid pipe, or any valved section of it shall, unless otherwise specified, be subjected to hydrostatic or air pressure testing conduct,.l under the observation and ap— proval of the Engineer as noted herein. 24,000.7.B1. Pressure During Tests: All pressure or force mhin pipe shall be subjected to hydrostatic or air pressure of 150 pounds per square inch. 24,000.7.B2. Duration of Pressure Test: The duration of each pressure teat shall be at least 30 minus tes. —' ' 24,000.7.B3. Procedure: All pipe or sections thereof shall be slowly filled with water if a hvdrostatic. test is used, and the specified test pressure, measured at the lowest point of elevation, shall be applied by means of a pump connected to the pipe is a satisfactory manner. The pump, pipe connection, gauges and all necessary apparatus shall be furnished by the Contractor. Cauges and measuring devices must meet with the approval of the Engineer and the necessary pipe taps made as required. 24,000.7.B4. Fxpelling Air Before Test: Before apply:ag hydrostatic test pressure, all air shall be expelled from the pipe. To accomplish this, taps "hall be made, if necessary, at points at highest elevation and afterward tightly plugged. 24,000.7.B5. Examination Under Pressure: Any crack or defective pipes, fit— tings, or valves discovered in consequence of tie pressure test shall he re— moved and replaced by the Contractor with sound material in the manner pro— vided and the test shall he repeated until satisfactory to the Engineer. 24,000.7.B6. Permissible i.eakage.: A drop it pressure over the 30 minute teat period exceeding 3 pounds hall be cause for rejection of the project. All leaks shall be corrected and the test repeated until the pressure drop is within the 3 pound limit. 24,000.7.C. ••_11)C!CTIVITY TEST: Conductivity "hall he provided throughout the force main --item by use of copper straps or approved conductive gaskets with ,opper inserts. All fittings shall he mechanical joint with ccpprr ctretps. Lead tipped gaskets will not be approved for conductivity. ,:opper Jumper straps between sections of p i pP shall be nor 1 ^"s t hav I �x 3/4" strap bolted to shot welded pipe stratus of the same siz. . Ko't a ghat', '+e S/lh" diameter bronze. For all locations+ whore Rhin. welded xtr•ip" H-• not available, field welds shall he made using the Cadweld method wit!) size l2 cartridges. Each field weld shall he properly made after fillnL' the "„rfa;e of 24 , 00(' - 15 04h r, r iItht 1981, 4onv a t ron, lovvne , An,t.s r l i k 6 Associates, Inc.