Field Guide
The erection manual, in your pocket.
Safety, anchors, H/500, turn-of-nut, screws, and every AGS sheet from the construction manual. Job-specific drawings still govern.
Drawings govern. Safety is the contractor’s.
When this guide and the field-use drawings disagree, the drawings win. The manufacturer is not the engineer of record, does not design foundations, and does not supply anchor bolts.
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On the phone, in the mud
Field calculators
H/500 · plumb & straight
Columns plumb to height/500. Beams, girts, and purlins straight to span/500.
± L / 500
5⁄8″
Allowable departure from plumb or straight. 300″ of member · 0.600″ decimal.
Guide example: 25 ft → ±⅝″.
Turn-of-nut
From snug-tight, flat surfaces only.
Required rotation
½ turn
L = 5.3d. Tolerance ±30°. Match-mark nut, bolt, and steel.
Minimum pretension · ¾″ · A325 / F1852 28 kips · A490 35 kips. Calibrate three assemblies of each diameter, length, and grade on a Skidmore.
Screw gun RPM
Variable speed 0–2000. Depth nosepiece. No impact. ≥ 6 amp.
Maximum RPM
2,000 RPM
Total thickness 0.018″ – 0.095″. Steady pressure. Three threads past the substrate. Swarf off the panel.
Jobsite
Safety, trucks, storage, tools.
Frame
Anchors, primary, secondary, bolts, weld.
Covering
Screws, panels, trim, AGS details.
Reference
Product specs and field calculators.
Construction details
AGS-001.1 through AGS-038.1
Corner, eave, ridge, rake, girts, jambs, base angle, rafter seats, rod bracing. Typical sheets — confirm every fastener on the job set.
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