structure. Never omit any part called for on thedetailed erection drawings. Each of the members,parts, and accessories is labeled by stencil; it is notnecessary to guess which part goes where. Refer to theerection plans and find the particular members youneed as you work.High-strength steel bolts are used at rigid-frameconnections: roof-beam splice and roof beam tocolumn. These high-strength bolts are identified by aY stamped into the head, as shown in figure 9-3. Allhigh-strength steel bolts and nuts should be tightenedto give at least the required minimum bolt tensionvalues. The bolts may be tightened with a torquewrench, an impact wrench, or an open-end wrench.When a PEB is not erected on a concrete slab, afloor system by the same manufacturer should be used.Read and follow the manufacturer’s instructions whenyou are installing the floor system.LayoutAfter the floor system or concrete slab has beenprepared, the next step is to uncrate and lay out thestructural parts. Lay the parts out in the followingmanner:Parts making up the frame assembly should belaid out, ready for assembly and in position forraising.Girts, purlins, and base angles should be di-vided (equally) along each side of the founda-tion.End-wall parts should be divided equally be-tween the two ends.Figure 9-3.—High-strength steel bolt.All miscellaneous parts should be centrally lo-cated.Panels and other parts not used immediatelyshould be placed on boards and protected fromthe environment and jobsite debris.Lay out the column and roof beams for assem-bly, using crate lumber to block up the frames.Erect the center frame first. Use the minimumnumber of high-strength bolts to bring theframe members together. Install the remainingbobs to get the proper tightness.Exterior AssemblyUse galvanized machine bolts to assemble the girtand purlin clips to the frame. Keep in mind that theend frames have girt and purlin clips on one side only.The center frame has girt and purlin clips on each sideof the frame.The cave girts should be attached to the caveangles with 5/16-inch left-hand nuts and shoulderbolts. An example is shown in figure 9-4. You willneed two cave angles for each cave girt. In fasteningthese together, remember the short section of the caveangle is always fastened to the left side of the cave girt.The long section of the cave angle is fastened to theright side of the eave girt.Use 3/8- by 1-inch galvanized machine bolts toattach the gable angle and doorjamb top clips to thebottom flange of the end frame roof beams.A-FRAME.— To erect the frame, place A-frameprops in position—one 8-foot frame at each side of thebuilding and a 10-foot frame in the center of theFigure 9-4.—Attaching eave angle to girt.9-4
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