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All pipes shall be so lai that the contact in the joint between two lengths of--pipe shall be <br />uniform throughout the circumference f the joint. Where curves in alignment are indicated on the drawings, <br />and the curves are flat, standazd pipe ay be used with the outside edge of the joint pulled away from the <br />seat to make a smooth curve, as descr' d herein. <br />The interior of the <br />the work progresses and shall be clea <br />securely placed in the ends of all pipe li <br />temporarily, or at the end of the day's <br />2005.05 <br />(a) General <br />ie shall be kept free from dirt, joint material, and foreign materia] as <br />upon its completion. Tight fitting stoppers or bulkheads shall be <br />s to prevent trash or dirt entering the pipe when the work is stopped <br />"Embedment", as used ' these specifications, is defined as that area beginning at the existing <br />trench bottom up to 6"42" above the top of pipe. <br />When the entire pipe <br />backfilled with enough granular n <br />pouring concrete around the pipe, <br />be floated. The embedment or <br />conditions. <br />All embedment shall <br />55% Relative Density (ASTM D204! <br />installed to 95% Standard Proctor <br />Embedment shall also be free of gra <br />(b) <br />Crushed stone or <br />free from frozen material, salt, or ve <br />tested in accordance with TxDOT Tc <br />for percentages by weight (TxDOT <br />Materials of other gradation and <br />as been checked for line and grade, the body of the pipe shall be <br />al or concrete on both sides to hold the pipe firrcily in position. When <br />should be taken in filling all voids around the pipe. The pipe shall not <br />ement material shall be cazefully worked to assure uniform laying <br />installed to 90% to 95% standard Proctor Density (ASTM C698) and <br />except under existing or future paving where the embedment shall be <br />)ensity, 70% Relative Density or where specified on the plans. <br />, roots, vegetation, clay ball, and other deleterious materials. <br />d-screened gravel shall consist of durable particles of crushed stone, <br />[able mattec It shall have a wear of not more [han 40 percent when <br />Method Tex-410-A. Gradation shall meet the following requirements <br />m 248, Standazd Crushed Rock-Aggregate Type A, Grade 4): <br />)0qo Passing 1" <br />- 60% Passing 1/2" <br />- 10% Passing #4 <br />- 5% Passing #8 <br />may be utilized if specifically approved by the Engineer. <br />Pipe shall be bedded in accordance with the standazd details shown in the plans and with the <br />class of embedment specified on the Isewer profile sheets. Whenever the prescribed maximum trench width <br />is exceeded, the Contractor shall util'uze at his own expense the class of embedment or encasement required <br />to provide the load-carrying capacity for the trench width as actually cut. <br />Item 2005-4 <br />