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CURVED ALIGNMENT Deflected Straight Line Radius Pipe Bends 48 American Concrete Pipe Association • www.concrete-pipe.org
ALIGNMENT FOR RADIUS PIPE Last Straight Pipe P.T. Direction of Laying Set P.C. Correct Alignment When radius pipe is used to negotiate a curve, the point of curve (P.C.) should be established at the midpoint of the last straight pipe and the point of tangent (P.T.) falls one-half of the standard pipe length back from the straight end of the last radius pipe. Incorrect alignment will result when the point of curve is established at the end of the last section of straight pipe. To assure the point of curve is at the proper station it may be necessary for a special short length of pipe to be installed in the line ahead of the point of curve. American Concrete Pipe Association • www.concrete-pipe.org 49
Page 1 and 2: CONCRETE PIPE & BOX CULVERT INSTALL
Page 3 and 4: Table of Contents I. CONCRETE PIPE
Page 5 and 6: I. CONCRETE PIPE INSTALLATION MANUA
Page 7 and 8: • laying sequence • required sp
Page 9 and 10: the path of the pipe as it is lower
Page 11 and 12: the job site in a greater number of
Page 13 and 14: ordinary rule or stadia rod can mea
Page 15 and 16: control point the depth from the co
Page 17 and 18: or three control points. Where line
Page 19 and 20: ance adequate enough to insure prop
Page 21 and 22: on pipe stresses. Compaction of the
Page 23 and 24: Installation Bedding Haunch and Low
Page 25 and 26: VERTICAL ELLIPTICAL PIPE STANDARD E
Page 27 and 28: For those projects still using the
Page 29 and 30: CLASS D BEDDING Used only with circ
Page 31 and 32: EMBANKMENT BEDDING CIRCULAR PIPE (M
Page 33 and 34: TRENCH BEDDING CIRCULAR PIPE (MILLI
Page 35 and 36: TRENCH BEDDINGS ELLIPTICAL & ARCH P
Page 37 and 38: EMBANKMENT BEDDINGS ELLIPTICAL & AR
Page 39 and 40: gasket and/or pipe manufacturer’s
Page 41 and 42: LUBRICATE GASKET Lubricate the gask
Page 43 and 44: and water. The joint surface is tho
Page 45 and 46: tion, and connected by means of a c
Page 47: ations and is best obtained from th
Page 51 and 52: SOIL DENSITY Several test procedure
Page 53 and 54: • • • • • stubs properly
Page 55 and 56: inlet pipe to the downstream manhol
Page 57 and 58: EXFILTRATION TEST American Concrete
Page 59 and 60: water leakage. The section of pipe
Page 61 and 62: or develop criteria for pipe larger
Page 63 and 64: ally not practical because of the c
Page 65 and 66: PRE-INSTALLATION PRECAUTIONS The Sa
Page 67 and 68: When unloading boxes, caution shoul
Page 69 and 70: SITE PREPARATION EXCAVATION Trenche
Page 71 and 72: used (less than 1 1/2 in. preferred
Page 73 and 74: INSTALLATION BOX ALIGNMENT It is cr
Page 75 and 76: tinuous strip, however if this is n
Page 77 and 78: When trench shields are removed tak
Page 79 and 80: III. SPECIFICATIONS Concrete pipe i
Page 81 and 82: ASTM C 118 (C 118M): Concrete Pipe
Page 83 and 84: including hydraulic transients, of
Page 85 and 86: or exfiltration acceptance limits t
Page 87 and 88: IV. APPENDIX DEFINITIONS Backfill o
Page 89 and 90: ial formed into a defined cross sec
Page 91: 1303 West Walnut Hill Lane, Suite 3

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