Timberless-44 iSPAN Floor System

Lightweight Flooring System for Mid-Rise Structures

The Timberless-44 prefabricated iSPAN floor system is ideal for structures of up to 10 stories.


3″ Concrete


Wire or Fiber Mesh


3/4″ Dovetail Metal Decking


3 1/2″ Batt Insulation


48″ O.C. Max

Hat Channel

5/8″ Drywall

Lightweight, strong, and cost-effective.

The prefabricated Timberless-44 floor and decking system will provide superior overall performance, and is ideal for buildings up to 10 stories. The 3″ concrete pour provides a solid feel under foot while maintaining a light structure for the foundational elements. With joists at only 48″ O.C., expect reduced labor and materials to ultimately save on time and budget.

Timberless-44 is ideal for Mid-Rise projects like:





Student Housing

T-44: iSPAN System Details


Total System Weight of 44 lbs. psf.

Concrete Poured After Completion of Each Level

No Shoring Required, Saving Time with Sub Trades

Hat Channels & Drywall Installed at Bottom of Joists for Controlled Sound

All Components Non-Combustible

Quick Installation

Spans up to 30+ Feet

Cantilever Balconies

Ratings / Data

Fire Rating

UL I525 1 hr.

UL I525 2 hrs.

UL G-555

Sound Technical Data

STC 57 with Carpet / Pad

IIC 77 with Carpet / Pad


054000 Timberless-44 Load Bearing Cold-Formed Metal Framing

052126 Composite Steel Total Joist 18-0817

Timberless-44 STC Ratings

Timberless-44 UL Ratings

Timberless-44 Details

Timberless-44 Section Details

The process of getting started is easy with a Superior Framing Solution

Schedule a Project Discovery

Schedule a Project Discovery

Schedule a discovery call with our experienced sales and estimating team to ensure your project is a good fit for a cold-formed steel framing system.

System & Delivery Selection

System & Delivery Selection

Working with our sales team, we’ll help you specify the correct framing solution for your project.

Review & Approve Proposal

Preview & Approve Proposal

Once your system is selected, we’ll review your scope and schedule with you to make sure everything is clear and accounted for.

Design & Go Vertical

Design & Go Vertical

Once approved, our pre-construction team will coordinate with you to ensure accuracy, timelines and budgets. Then we go vertical!