Technical Documentation

Project
Specifications

Technical specifications for completed Rowan Metal Works projects — material grades, coating systems, production methods, dimensional tolerances, and quality control standards.

PS-001/Ref: P-001

Commercial Structural Steel Package

Material TypesWide Flange (W-Shape), HSS Tubing, Angle, Plate

Steel GradesASTM A992 (W-Shapes), ASTM A36 (Plate/Misc.), ASTM A500 Gr. B (HSS)

Total Weight±82 Tons

Largest MemberW18x97 x 40'-0" Beam

Finish TypeShop Primer

Coating SpecSherwin-Williams Macropoxy 646 EP Primer, 3–5 Mils DFT

Blast StandardSSPC SP 10 Near-White Blast

Production MethodCNC Plasma Cut, Saw Cut, Drill Press, MIG/Stick Weld

Welding StandardAWS D1.1-2020 Structural Welding Code — Steel

Dimensional ToleranceAISC Code of Standard Practice Table 6.4.1

QC StandardVisual weld inspection per AWS D1.1, DFT per SSPC-PA 1

Installation Req.Delivered sequenced per erection drawing; erection by others

PS-002/Ref: P-002

Custom Stair & Railing System

Material TypesHSS Square & Rectangular Tubing, Flat Bar, Plate

Steel GradesASTM A36 Mild Steel

Stair Configuration2-Flight, 180° Return, 42" Guard Height

Railing Linear Footage±120 LF

Infill Type1/4" x 1-1/2" Flat Bar Vertical Pickets @ 4" OC

Finish TypePowder Coat

Coating SpecRAL 9005 Jet Black, Satin (30–50 GU), Polyester Powder

Film Thickness2.5–4.0 Mils DFT

Production MethodCNC Plasma Cut, Press Brake, MIG Weld, Shop Assembly

Code ComplianceIBC 2021 Section 1015 — Guards

Dimensional Tolerance±1/8" on overall stair dimensions

QC StandardVisual weld inspection, DFT spot checks per SSPC-PA 1

PS-003/Ref: P-003

Industrial Equipment Platforms

Material TypesW-Shape Beams, HSS Columns, Bar Grating, Pipe Railing

Steel GradesASTM A36 (Structural), ASTM A123 (Galvanizing)

Platform Count3 Independent Structures

Total Platform Area±1,800 SF

Design Live Load125 PSF Uniform

Decking Type1-1/2" W-19-4 Bar Grating, Welded, Banded

Finish TypeHot-Dip Galvanized

Coating SpecASTM A123 Hot-Dip Galvanizing, ±3.0 oz/SF avg

Handrail StandardOSHA 1910.23 — 42" Top Rail, 21" Mid Rail

Production MethodSaw Cut, MIG Weld, Shop Fabricated, Field Bolted Connections

Dimensional Tolerance±1/4" on platform level elevation

QC StandardASTM A123 galvanizing inspection, visual weld

PS-004/Ref: P-005

Powder Coating Production Run

Substrate6063-T5 Aluminum Extrusion

Part Count1,200 Pieces

Pre-TreatmentAlkaline Clean, Chrome-Free Conversion Coat

Coating TypeThermosetting Polyester Powder

ColorCustom Dark Bronze (Spectrophotometer Matched)

Gloss Level30–40 GU (Satin)

Film Thickness2.5–3.5 Mils DFT (5-Point Per Part)

Cure Schedule375°F Metal Temperature, 20 Min Hold

Performance StandardAAMA 2604-17

QC TestsAdhesion (ASTM D3359), DFT (ASTM D7091), Color (ASTM D2244)

Reject Rate< 1% (Strip & Recoat)

DocumentationFilm thickness log, color match records, adhesion test certs

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