Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />overexcavated, the space between the pipe and the bore can be filled <br />with sand, grout, concrete or other suitable material, For this <br />type of installation, a bedding factor of three is recommended, If <br />the bore is slightly overexcavated and the space between the pipe <br />and the bore is not filled, a minimum bedding factor of 1.9 is <br />recommended. <br /> <br />2,4 Pipe Strength <br /> <br />Pipe strengths in SAMM are calculated in terms of either the <br />O.Ol-inch (0.3-mm) crack strength or ultimate strength in the <br />three-edge bearing test for reinforced concrete pipe, For <br />reinforced concrete pipe, three-edge bearing strength is divided by <br />the inside span of the pipe to obtain a strength classification <br />termed the O-load. <br /> <br />The O-load strength is determined by the equations: <br /> <br />00,01 . (WL + WE) (F.S.)/BfS <br /> <br />Dult . (WL + WE) (F.S.)/BfS <br /> <br />Where: D-load · pounds per linear foot per foot of inside <br />diameter (N/mlmm) <br />WL · live load (pounds per linear foot) (kN/m) <br />WE · earth load (pounds per linear foot) (kN/m) <br />F.S. . factor of safety <br />Bf · bedding factor <br />S · inside pipe span (inches)(mm) <br /> <br />3 . SAlIM USBR IBS'rRDC'1'IORS <br /> <br />3.1 IAStalIatioD <br /> <br />SAMM is supplied on one double sided, double density floppy <br />diskette, To use SAlIM you must have the hardware and software <br />described in Section 2 of this manual, Before running SAMM, make a <br />working copy of the program diskette so the original disk may be <br />used as a backup. The procedure for installation and start-up is a <br />follows: <br /> <br />3,1.1 Daal Dlak Drive. <br /> <br />Ose the DOS command .PO~. to format two blank diskettes, The DOS <br />manual contains all the necessary instructions if you are unfamiliar <br />with this procedure. One diskette will be for the program files, <br />The second diskette is for storing the data files, If you desire, <br />the data files can be placed on the same diskette as the program <br />files but having a separate diskette for files eliminates clutter on <br />the operating diskette, prOVides a central storage location for all <br />the data files and maximizes the number of working files you can <br />maintain, <br /> <br />5 <br />