1.5″ Type A Roof Deck
Type A Roof Deck is 1.5" deep. Also known as narrow rib, this structural metal roof deck provides a wide support surface for various types of rigid insulation and roofing materials.
Description
Roof deck products act alone in transferring horizontal and vertical loads into the building frame. Roof Deck does not work compositely with other building materials.
About O’Donnell Metal Deck:
Since 1996 O’Donnell Metal Deck has been fueled by a high performing team you can count on. The order process is seamless from the time you request a metal deck quote, place an order and metal decking is delivered.
Our multiple stock & manufacturing locations combined with years of experience allow O’Donnell Metal Deck to service any job throughout the USA. Our process allows reduces the end-to-end logistic costs for delivering what you need when you need it. Contact your local branch to get started.
WEST
SOUTH CENTRAL
MIDWEST
SOUTHEAST
NORTH
FAQs:
What is 1.5" Type A Roof Deck?
1.5" Type A Roof Deck, often referred to as Type A or Narrow Rib, is a low-strength metal roof deck profile with closely spaced ribs at 1″. It is considered outdated and is primarily used today for patching or matching existing structures built with this profile.
What gauges are available for 1.5" Type A Roof Deck?
We stock 16ga, 18ga, 20ga, and 22ga coils. The gauge selection affects the deck load capabilities. Confirm your gauge requirements or ask us for recommendations.
What finishes are offered for 1.5" Type A Roof Deck?
Standard finishes for Type A deck include G-60 galvanized and G-90 galvanized. Due to its limited market use today, prime-painted availability is limited. Learn more about metal deck finishes here.
What factors influence the cost of 1.5" Type A Roof Deck?
Factors affecting cost include current steel pricing, quantity ordered, gauge and finish selection, delivery location, and schedule. Be sure to account for waste when estimating. Contact your nearest branch for accurate pricing.
What lead times should I expect for 1.5" Type A Roof Deck?
-
- Stock lengths are generally available same-day or next-day for pickup or delivery.
- Custom-cut lengths in standard gauges (22–16) and finishes (G-60, G-90 or PTD) typically require 3–6 weeks. As this is an older profile -- we limit production runs due to a tedious tooling change over process.
Can you custom-cut 1.5" Type A Roof Deck to the length I need?
Yes. We regularly custom-cut deck to specified lengths to reduce waste and speed up installation.
How can I save money when buying 1.5" Type A Roof Deck?
To reduce cost, provide as much lead time as possible, use standard gauges and finishes, remain flexible on final specifications, and ask about availability of surplus or secondary materials.
Do you carry surplus or "secondary" 1.5" Type A Roof Deck at reduced prices?
Yes, we often have discounted surplus or secondary material with minor imperfections. Contact us to check current inventory.
A Deck Gauges:
A Deck Finishes:
Galvanized G-60 zinc coated steel is the standard in the deck industry.
Galvanized G-90 is typically specified for exterior applications or project specific needs.
PTD or primer painted is an impermanent, provisional coating and is gray on top and bottom.
Deck Options:
Hanger Tabs:
Hanger tabs are designed for the support of ceilings and you should consult your engineer for individual allowable loads on single hanger tabs.
Certifications
Fast Metal Deck Shop Drawings:
Our ability to provide fast steel deck approvals has made us one of the best metal deck supply and detailing companies in the United States. Our process begins with fast and direct communication with our customers and stakeholders to ensure maximum productivity and timeliness. The metal deck shop drawing process is as outlined below.
Approval Drawings
Our team gathers, reviews and interprets information from the contract bid documents.
EOR Review
Our steel deck layout is submitted to the design team for missing information or discrepancies to solve potential issues.
BOM Fabrication
Once approved by the engineer, our detailers submit their bills of material to be fabricated.
Field Use Plans
We'll issue easy to read structural steel erection plans for field use to save installation time.
Learn More about Metal Deck Shop Drawings.
SDI Members:
We only supply products certified by SDI members that meet the the strict standards for engineering, design, manufacturing and usage of steel decks.
Made in America:
Our products are made with US made steel. When mill certificates are required, we can provide you the material's physical and chemical properties. Contact Us for more information.
UL Classified:
SDI Recommeneded Spans:
Contact us for specific product submittals and load tables
| Recommended Maximum Spans for Construction and Maintenance Loads Standard | ||||||
|---|---|---|---|---|---|---|
| Type | Span Conditon | Span | Max. Recommended Spans Roof Deck Cantilever | |||
| Ft.-In. | Meters | Ft.-In. | Meters | |||
| A DECK | 22ga. | 1 | 3'-10" | 1.15 m | 1'-0" | .30 m |
| 22ga. | 2 or more | 4'-9" | 1.45 m | |||
| 20ga. | 1 | 4'-10" | 1.45 m | 1'-2" | .35 m | |
| 20ga. | 2 or more | 5'-11" | 1.80 m | |||
| 18ga. | 1 | 5'-11" | 1.80 m | 1'-7" | .45 m | |
| 18ga. | 2 or more | 6'-11" | 2.10 m | |||
Construction and maintenance loads:
SPANS are governed by a maximum stress of 26 ksi (180 MPa) and a maximum deflection of L/240 with a 200-pound (0.89 kN) concentrated load at midspan on a 1'-0" (300mm) wide section of deck. If the designer contemplates loads of greater magnitude, spans shall be decreased or the thickness of the steel deck increased as required. All loads shall be distributed by appropriate means to prevent damage to the completed assembly during construction.
A Deck Attachment Pattern:
Your project Engineer will determine your attachment requirements for your design loads, building code and project requirements. The following standard 1.5 A Deck attachment pattern has been provided as a minimum recommendation for the product specified. The attachments should be made to from deck to support, deck sidelap to deck sidelap and seck to perimeter supports.
| Specifications | |
|---|---|
| Gauges | 16, 18, 20, 22 |
| Height | 1.5" |
| Comparable Names | Type A, NR Deck, Narrow Rib, 1.5 A |
| Width | 36" |
| Finish | Prime Painted, Galvanized G-60, Galvanized G-90 |
