»click here for available colors   Agro Rib Roofing & Siding Weather | Agro | Industrial | Standing | Colors Agro Rib roofing and siding is designed to withstand the toughest weather conditions. The ¾ inch deep profile offers high rigidity and superior strength. Its clean crisp appearance will give your building the look it deserves. Agro Rib is a practical choice for both industrial and agriculture applications. ALLOWABLE UNIFORM LOADS (lb per ft2) GAUGE PURLIN OR GIRT SPACING (in.) 16" 20" 24" 30" 36" 42" 48" 29 280 143 83 42 25 15 10 26 400 205 118 61 35 22 15 NOTE: - Based on continuous load over three equal spans - Allowable loads determined by material strength or by limiting defection of 1/180 of the span - High tensile steel having a minimum yielding stress of 65,000 psi LENGTHS: 1 foot through 25 feet in one inch increments GALVANIZED COATINGS: Hot-dipped zinc coated steel conforms to the requirements of ASTM A525M (coating designation Z275) PREPAINTED COATINGS: Exterior dry thickness of 1.0 mil., underside dry film thickness of .5 mil. Prepainted coating applied over Z275 galvanize. (Inquire on color selection)