Atlanta and North Georgia since 1925

engineered lumber

The Simpson Strong-Tie Quality Policy

We help people build safer structures economically. We do this by designing, engineering and manufacturing "No Equal" structural connectors and other related products that meet or exceed our customers' needs and expectations.

Simpson SDW Strong-Drive

The Strong-Drive® SDW screw is a 0.22" diameter, high-strength structural wood screw specifically designed for fastening multi-ply wood members such as plated trusses, engineered-lumber products and solid-sawn lumber. The SDW installs easily with no pre-drilling and is available in optimized lengths for fastening 2, 3 and 4-ply trusses or 1 3/4" engineered lumber

Building Green?
engineered lumber
Confused about what green products to select to earn points toward National Green Building Certification?
Georgia-Pacific has made it a little easier – our
Wood I Beam™ joists and GP Lam® LVL have been Green Approved by the NAHB Research Center. This means you can be assured that Broadspan engineered lumber products comply with specific green practice criteria in the National Green Building Standard.
See our product listing on for more information.
Many complex roof framing questions can be answered with a good calculator. Hip/Valley rafter questions come up on almost every job. Click on the image below to go to for help with roof framing calculations.

Engineered Lumber Products

Lummus Supply Company was the first building materials dealer in Atlanta to offer I-joist and LVL products dating all the way back to the early 1980's. We were the first to offer CAD layouts of floor systems using I-joist and LVL beams. We were the first and we are still the best value for your engineered lumber products dollar. We design, cut and deliver joist,beams and rim board to your job, on time and on budget.

We are always happy to work with your architect or engineer to develop  cost effective and structurally suitable solutions for your framing needs.

Our design team has decades of experience and uses the latest version of advanced software to design floors that  not only meet

code requirments but live up to customer comfort levels as well. Our designs are typically 25% better that the building codes require so that we can meet our customers comfort expectations. Contact our design staff to learn more about our Customer Comfort Floor Systems.

Lummus Supply Co

Engineered Products Division


Experienced designers using  advanced software and state of the  art fabrication machinery means quality built into every floor package we deliver.
Our investment in  precision equipment means you get consistency and accuracy in every job,every time.
You think our people are proud of what we do? You bet we are! We were the first to offer precision cut I- Joist systems in Georgia and we don't intent to rest on our laurels. We are always striving to improving our processes. As new equipment and software becomes available you can be sure that we will remain on the leading edge of floor system technology for builders who want the best for their customers.
These rimboards come in depths that match BCI® Joists and long lengths. Construction time is reduced. No special backing is required for siding or deck attachment. Manufactured to achieve maximum nailing values, BOISE CASCADE® Rimboard can handle seismic and high wind loads.
VERSA-LAM® laminated veneer beams and headers eliminate twisting, shrinking and splitting, and deliver flatter, quieter floors and structures. Sized to match our BCI® and AJS® Joists and other elements of the SIMPLE FRAMING SYSTEM®, VERSA-LAM® offers quick assembly and is precision cut into more than 18 standard sizes. Because they have no camber and strength is consistent throughout, VERSA-LAM® LVL products have no top or bottom side. With better properties VERSA-LAM® beams support heavier loads and longer spans than comparable glulam or dimension lumber products. Price competitive with laminated strand products, VERSA-LAM® offers all of the advantages of authentic laminated veneer lumber. These beams are manufactured in multiple widths and depths to match BCI® joists.
TrimJoist™ is the marriage of an open web floor truss and a trimmable, wooden I-joist, bringing the best features of each to the relationship. As the name TrimJoist indicates, our product can be trimmed on the construction site for a custom fit. No more custom made floor trusses! If you have been using open web trusses this could be the perfect product for you.