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12 FIELD CONNECTION PRACTICES tor stated that the use of drift pins before bolting ensures proper alignment. The erectors offered little opinion about field connection prac- tices. One, however, opined that long-span straight bridges can have their splices tightened under the no-load condition. The same erector pointed out that erecting a structure and hav- GENERAL CONSIDERATIONS ing to go over it again to tighten certain members adds to cost. That erector stated that the key is to survey the elevations dur- One astute erector briefly summarized the key aspects for ing erection before tightening anything. Furthermore, it stated success in this way: Accurate shop fabrication, accurate loca- that geometry control is most important; preferring con- tion and elevation of supports, maintaining proper elevations centric, not oversized, holes in all members to ensure align- at splices, and complete installation of connections before ment, spacing, and cross-slope geometry with the exception releasing falsework all contribute to a successful steel erec- of secondary members such as lateral bracing. Another erec- tion job.