3′ Tuf-Rib

Technical Specifications
 Live Load (Strength)Uplift Load (Internal Pressure)
SPAN in Feet2'3'
28 Gauge Simple Span113451910113593321
28 Gauge Continuous Span119693618119744227




1.98 lb/LF

Paint System

Stormshield Xt-40, Energystar® Rated, Silicone Modified Polyester


40 Years

Available Material Type

Painted and Galvalume

Gauging System

Epic Steel follows the national A.I.S.I. (American Iron and Steel Institute) specifications manual for tolerances in galvanized sheet metal.
All gauges conform to ASTM A792 and ASTM A653 Grade E (80,000 min. yield)/ or Grade D (50,000 min. yield) unless otherwise designated at time of order.

Application Details:

Minimum Slope Requirement: 3:12

Screw Application: #10 Wood grip fasteners are designed for use with dimensional lumber. #14 Wafer fasteners are designed for use with plywood sheeting, OSB and wafer wood (7/16” minimum thickness). #12 Tek screws are designed to be used with structural steel up to 3/16” in thickness.

Roof Application: Fasteners to be applied along the side of every rib and attached to each purlin, 2’ on center.  Please note that it is the responsibility of the builder to ensure that purlins are adequately spaced to meet specific engineering requirements.

EPIC Steel is neither partially nor solely responsible for improper installation or defects as a result of installation.*Certain colors may be subject to an order minimum and longer lead time. Epic Steel recommends obtaining a color chip prior to placing an order. Please contact your Epic Steel representative to learn more.

This is Epic Steel’s most economical metal roofing system. With clean and traditional lines, this panel delivers quality and versatility that is unmatched for the price by any other 40-year roofing material in the industry.

This exposed fastener panel covers 36” after overlap with 9” on center ribs that are ¾” in height. Formed at Epic Steel’s facility, this panel is cut to length and available in just 1-2 days.

Attributes: Economical, Easy to Install, Fast Turnaround, Versatile, For Use on Open Purlins or Solid Substrate, Manufactured With an Anti-Siphon Groove Overlap System.

  • 1 ½” Bearing Length
  • Load Span Tables Based on Working Stress
  • Flexural Design analysis according to AISI “Specification for the Design of Light Gauge Cold-Formed Steel
  • Structural Members” May 1981
  • Continuous Span Loading applies to sheets continuous over 3 or more spans
  • Weight of sheet has not been allowed for when calculating live loads and uplift.
  • Deflection (L/180) limiting live loads based on deflection of span
  • Metal thickness based on minimum ASTM specifications for allowable load calculations
  • Loads may be increased by ⅓ for wind loads


Note: The load tables have been compiled for the design of steel roofing and siding used in conjunction with either wood or steel framed structures.  EPIC Steel assumes no responsibility, either expressed or implied, for it’s use.

Simple Span: gives load specifications on a single length panel fastened at either end of the panel (essentially free spanning the length in question).

Continuous Span: gives load specifications on a single panel with at least 3 additional fastenings between either end of the panels.  Load limits are given in lbs. per sq.ft.

Wind SpeedLive Loads (lbs./sq. ft.)
70 mph12.6
80 mph16.4
90 mph20.8
100 mph25.6
110 mph31.0
120 mph36.9
130 mph43.3
Areas of discontinuity are subject to higher spikes in wind pressure, therefore a different coefficient in wind pressure will need to be considered and multiplied by a factor of 1.5.
Located just a mile & a half past the Missoula airport on the North side of the road.


406-542-1711 406-542-1911