Structural, ornamental, and equipment installation
Erect the designed load path
Structural erection requires the right member, location, orientation, bearing, anchors, and connection. Match piece identification with the complete approved detail, not just one fitting hole. A cambered beam may be intentionally curved and must have the specified orientation. Verify columns in the required directions and against project control. Leveling shims, base arrangements, and bearing pads form part of the support system; improvised scrap is not automatically equivalent. Temporary bracing and bridging remain until the approved stability conditions permit removal. A completed structure's capacity does not describe every intermediate erection stage.
Fit-up discrepancies need controlled correction. Drift tools and approved fitting methods are different from damaging bolts or flame-enlarging holes without authorization. Reaming, slot changes, edge removal, or fastener substitution can affect connection geometry and must receive the appropriate disposition. Correct hole alignment alone does not establish correct gusset orientation or a complete connection.
Complete bolted and welded connections
Distinguish a snug-tightened condition from a specified pretensioned connection. Use the approved installation method, compatible fastener assembly, and required verification. Turn-of-nut reference marks track relative rotation from the specified initial condition. Direct tension indicators have their own placement and reading instructions. Lubrication and assembly condition can affect tightening behavior, so an arbitrary torque is not universal proof of achieved pretension. Slip-critical faying surfaces must retain the qualified interface condition.
A welding procedure specification controls relevant material and process variables alongside the drawings and welder qualifications. Check joint preparation, root geometry, consumables, storage, preheat, sequence, and applicable inspection requirements. Defects such as cracks or excessive undercut need an approved disposition rather than cosmetic concealment. Manage fumes and coating hazards. In a stated ideal equal-leg fillet model, theoretical throat is approximately 0.707 times the leg; that calculation does not replace the actual joint specification.
Install architectural and mechanical systems as systems
Ornamental and cladding work needs accurate dimensions, attachment, movement accommodation, finish protection, and compatible interfaces. Preserve designated fixed and sliding points instead of locking them with unauthorized welds. Precast bearing and temporary support, mass-timber connector geometry, and adhesive-anchor preparation and cure each require their own approved details. For equipment, correct soft foot before final alignment and recheck after support and fastening stages. Conveyor tracking needs systematic geometry and alignment checks. Thermal movement can be estimated from the supplied coefficient, length, and temperature change, but the approved system determines how that movement is accommodated.