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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />11 <br />I <br />II <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br /> <br />1. IftIlODOcrIOB <br /> <br />Program SAMM 'computes earth loads on concrete pipe in accordance <br />with the methods presented in the Concrete Ripe Design Manual (March <br />1990) and the Concrete Pipe Handbook (January 1988), published by <br />the American Concrete Pipe Association. The name SAMM is derived <br />from the phrase Spangler and Karston Method and refers to <br />the indirect design method developed by Dean Anson Marston and <br />Professor M. G, Spangler in the early 1950's at Iowa State <br />Oniversity, <br /> <br />The user must select input values suitable to his specific <br />installation, The information presented in the computer output is <br />for review, interpretation, application and approval by a qualified <br />engineer who must assume full responsibility for verifying that said <br />output is appropriate and correct, There are no express or implied <br />warranties. The use of this product does not constitute endorsement <br />by ACPA or any other agents. <br /> <br />2, SIIIII PROGRAII UVAKY.lD <br /> <br />SAMM is a computer program that determines the required supporting <br />strength of a buried concrete pipe in terms of a D-load for <br />cirCUlar, elliptical or arch pipe. Tbe program allows the user to <br />perform calculations in either English or SI (metric) units. Where <br />necessary to convert between tbe English and SI (metric) systems, . <br />hard conversions are used. It will operate on an IBM PC, XT, AT or <br />similar IBM compatible computer with a minimum of 2561 RAM utilizing <br />MS-DOS 2.0 or greater with an 8087 or 80287 math coprocessor. <br /> <br />SAMM determines the required D-load for earth, live and surcharge <br />loads for standard installation conditions. Tbe installation types <br />include trenches, positive projecting embankments, negative <br />projecting embankments and jacked Or tunneled pipe. Trench <br />pipelines are those placed in natural ground. Embankment pipelines <br />are usually bedded in natural ground, but are overlaid by a <br />construction embankment. Tbe embankment group is further subdivided <br />into positive and negative exposed to direct embankment loading, <br />JaCked or tunneled installations are exposed to not only earth and <br />live loads but axial loading due to the jacking pressures. <br /> <br />-- <br /> <br />,...- ,..,- <br />.""",'v',..n"......,,, ""..v,/^"',,"v,,,,^, <br /> <br /> <br /> <br /> <br />T_ <br /> <br />-- --- <br />t - --- <br /> <br />t:__...._1 e__.__ _, \'_-'__'__ <br />