The vertical compression strut consists of a flattened EMT conduit crimped at the top and bottom to attach directly to the structure above and to the ceiling main runner using two number twelve sheet metal screws typical. An additional one-inch wide by twelve gauge minimum steel strap ties into the assembly for supplemental restraint, with clip attachment methods referenced elsewhere on the drawings. Maximum recommended lengths limit the vertical struts to six feet two inches for half-inch EMT conduit, eight feet six inches for three-quarter-inch EMT conduit, and ten feet for one-inch EMT conduit.
CRIMP TOP & BOTTOM FLAT TO ATTACH TO STRUCTURE ABOVE AND MAIN RUNNER WITH (2) #12 S.M. SCREWS (TYP.) MAIN RUNNER CROSS RUNNER • • • NOTE: MAXIMUM RECOMMENDED LENGTHS FOR VERTICAL STRUTS. 1/2" EMT CONDUIT: UP TO 6'-2" 3/4" EMT CONDUIT: UP TO 8'-6" 1" EMT CONDUIT: UP TO 10'-0" STEEL STRAP 1" WIDE X 12 GA. (MIN.), REFER TO 10/A13.3 FOR CLIP ATTACHMENT METHOD, SIM TO WIRE
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