ARMY TM 10-8340-224-13AIR FORCE TO 35E5-6-1NAVY NAVFAC-P-337.A1-12. LOCATION AND DESCRIPTION OF MAJOR PARTS (CONT)(1) Arch Assembly. The arch assembly consists of twoaluminum side arch assemblies and an aluminum roof arch assembly.The arch assembly can easily be folded into a closed “W”configuration for easy handling and transport. A non-sectionalized arch assembly and a sectionalized arch assembly arecurrently fielded. The difference between both types is that thesectionalized arch assembly consists of two interlocking piecesthat are joined and held together by a quick release pin. Thenon-sectionalized arch assembly overall length is 113 inches andthe sectionalized arch assembly overall length is 98 inchesallowing easy transport by USAF aircraft.(2) Header Assembly. The header assembly is made fromaluminum rectangular tubing with a cross section of 1 1/4 x 2 1/2inches and has an overall length of 98 inches. Steel plates areriveted to the ends to allow attachment to the arch assembly.(3) Purlin Assembly. The purlin assembly is made fromtubular aluminum approximately 96 inches long x 1 1/2 inches indiameter. Folding diagonal braces which have “U” shaped crosssections are riveted to each end of the purlin. At the end ofeach brace is a rotating brace stud and brace shackle. The bracestud and the purlin end fitting lock into slots in the archassembly. Five purlins, one at the ridge, one at both eaves andone at each base are required to join two arch assemblies.(4) Eave Extender Assembly. The cave extender assembly ismade from tubular aluminum with a single foot, web–reinforcedbase welded to the bottom of the center length of tubing. Twohitch clip pins are fastened to the extender.(5) Ridge Extender Assembly. The ridge extender assemblyis made from tubular aluminum with a two-footed, web–reinforcedbase welded to the bottom of the center length of tubing. A hitchclip pin is fastened to the extender(6) Frame Sections Cover Assembly. The frame sectionscover assembly is diaper shaped, made of heavyweight, coatedcloth with interior straps to secure frame components andexterior straps which bind the assembly together.(7) Door Sill Assembly. The door sill assembly is madefrom tubular aluminum with a four foot long rotating door sillbolted to the center of the tubular section. Folding diagonalbraces which have a “U” shaped cross section are riveted to eachend of the door sill assembly. At the end of each brace is arotating brace stud and brace shackle. The brace stud and thedoor sill end fitting lock into slots at the base of the archassembly.1-10
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