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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

All four →

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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