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C-channel Building Details


Explore the Details About Our Popular C-channel Buildings

C-channel frames are more resistant to rust.

Olympia’s C-Channel Structures

The c-beams are bolted back-to-back against a haunch plate, which reinforces the structures stability, making it stronger and durable for a clear-span structure.

  • A limited 60-year structural warranty is given on wind loads, snow loads and seismic conditions.
  • Our steel has a coating of galvanized steel (55% aluminum and 45% zinc) applied at the steel mill. This is a permanent coating of rust protection. Our competitors apply a temporary coating of a water-based primer, which will eventually evaporate leaving the steel vulnerable to rust.
  • We apply a permanent coat because when rust forms on the frames it eventually runs to the sheeting, causing corrosion and holes.
  • Olympia is the only company in the US that adds a permanent, galvanized coating on their frame and components.

Rigid Frame Structures

  • Our competition only offers a 50-year warranty on their steel frame.
  • Our competition doesn’t galvanize, but applies a coating of primer to their metal frame. This only provides temporary protection against rust because primer eventually evaporates leaving the metal unprotected.
  • Hand welds are necessary to join the last 12 inches of each end of the beam and the plates which attach to each end of the beam.
  • Hand welds are inconsistent and if not welded correctly can cause structural failure. Rust is also more prone to occur where the hand welding connects.

C-channel frame structure is heavier than an i-frame structure.

A typical example of a 40′ W x 60′ L x 20′ H, with a 40 psf roof snowload…

  Column Rafter
C-channel 430 lbs 510 lbs
I-frame 410 lbs 408 lbs

C-channel structures are heavier


Olympia’s stainless steel fasteners have a lifetime warranty!

Stainless steel capped fasteners with a lifetime warranty

Olympia’s Fasteners

  • A limited lifetime warranty against corrosion. No other company provides warranties for their fasteners.
  • Olympia’s fasteners are made of stainless steel, which is composed of 18 parts chrome and 8 parts nickel for more resistance to rust.
  • We provide these screws and warranty because if the fastener rusts and corrodes, it’ll eventually spread onto the sheeting and cause holes in the panel.
  • They’re painted to match the color of the wall panels so the building will look more attractive.
  • Olympia is the only company in the US that provides a warranty for their fasteners.
Competition's fasteners discolor and rust

Rigid Frame Fasteners

  • Our competitors use long-life fasteners and don’t offer any warranty.
  • Some competitors use cadmium-plated fasteners which turn dark gray or black making the building unattractive over time.
  • Others use zinc, which will rust.

Olympia utilizes a Galvalume® PBR panel system to prevent leaks.

Olympia’s C-Channel Panels

  • All of our panels come with a limited 40-year rust-through perforation warranty against rust and corrosion. If a hole goes through the panel caused by corrosion, we will replace the panel.
  • Our panels are made with AZ55 Galvalume® steel – a composite of aluminum (55%) and zinc (45%) – that is extra resistant to rust.
  • The paneling is also available in many paint options. Our paint is also warrantied for 40 years against peeling and blistering, plus a 30 year warranty on fading and chalking. Our competitors only offer a 25-year warranty on the paint and no warranty on fading and chalking.

Competitor’s Paneling

  • The competition only offer a 25-year warranty against perforation for their panels.
  • The competition only offer a 25-year warranty on their paint with no warranty on fading or chalking.
  • The competition’s panels are made with galvanized steel and an R panel on the sides. It has a 1/3 overlap and will not protect against leaks.
  • Some of our competitors use PBR panels on the roof and R-panels for the walls. Others use only R-panels for both the roof and walls.

Olympia has the BEST warranties in the industry!

Olympia’s Warranties

  • 60-year structural warranty on wind loads, snow loads and seismic conditions. This includes the galvanized purlins, girts, columns and rafters.
  • Limited 40-year rust-through perforation warranty on AZ55 Galvalume® panels.
  • Limited 40-year paint warranty against chipping, cracking and peeling.
  • Limited 30-year warranty on chalking and paint color change.
  • Stainless steel capped fasteners with a limited lifetime warranty.

Competitor’s Warranties

  • The competition only offers a 50-year warranty on their interior structural framing.
  • The competition only offers a 25-year warranty on their panels.
  • The competition only offers a 20-year warranty on the paint.
  • The competition offers no warranty on chalking or fading.
  • The competition only uses lifetime fasteners and provides no warranty for their fasteners.

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Olympia’s panels are more resistant to rust and available in many colors.

Olympia’s C-Channel Painted Sidewall Panels

  • Olympia’s sidewall panels carry a 40-year limited warranty on the paint guarding against chipping, cracking and peeling.
  • We also provide an additional 30-year limited warranty against chalking or fading.
  • Sidewall panels come in several precision-coated colors.

Panel Colors

Trim Colors

Olympia's panels

Competitor’s Painted Sidewall Panels

  • Some of our competitors only offer a 20-year warranty on paint.
  • No reflective value nor any warranty on chalking or fading.
Competition's wall panel

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Olympia’s prefabricated c-channel buildings were designed for the do-it-yourselfer.

With our simple-to-follow assembly guide, and with the help of a few friends, you can save construction costs by erecting the building yourself. Our bolt-on, pre-fabricated structure does not need heavy equipment or an expensive crew to assemble. Just some friends, and a few days – and you’ll be done before you know it!


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A steel building expert will answer any questions you have.

C-channel building’s are less expensive than a wood or brick structure and more attractive than a quonset hut.

We like to think Olympia’s “do-it-yourself-style” buildings speak for themselves.