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<br />TEL.: <br /> <br />Jun 05 95 <br /> <br />16:36~No,008 P,03 <br /> <br />Mr. Ray Burllside <br />.lune 5, J 995 <br />page 2 <br /> <br />........ <br /> <br />The total de~ign load fi.,r the roof joists j!; 56 pounds per square !'out X ()' (joist spacing) X <br />25' (joist span) ,.". 8,400 pounds. The newly superimposed Radiographic cquiprnentload is <br />600 pounds; and, asslIlning all of it is imposed upon one of the double joists, the total load is <br />9,000 pounds (8,400 pounds odginal roof load plus 600 pounds radiographic equipment load.) <br /> <br />r....om comparing the newly superimposed load at worst condition, 9,000 pounds, versus the <br />capflcity of the double joists, 16,350 pounds, the joists appear to be suHlcient to carry the <br />load~. A eheck of the end rcaclions (for shear) shows the maximum allowable end reaction to <br />be 4,200 pounds per joist, or 8,400 pounds fi.)r a double joist condition. The end reaction <br />under the superimposed loading is approximately 4,440 pounds, stili within tolerance. <br /> <br />We trust the above infi.mllfltion is what you were needing, however, should you need any <br />additional information, please feel free to contact us at your cOJlvenicllce. <br /> <br />Sincerely yours, <br />COMMONS MEDICAl, <br /> <br />~_...--...~ <br /> <br /> <br /> <br /> <br />~-'1l1 E. CI~-~- <br /> <br />Vice president- Architecture <br /> <br />CO: Walt Collins <br />