The most critical areas of a glulam beam are the outside laminations. Thus, the strongest laminations are placed in these areas in either unbalanced or balanced layups.

Manufactured in a variety of widths (3 ⅛″ to 14 ¼″) and depths (6″ to 48″), and in lengths up to 66 feet, with or without camber, BOISE GLULAM is tremendously versatile. Grades range from Industrial to Architectural appearances where customers can choose the ideal strength and appearance combination. (Laminations are 10-12% MC maximum 15%.)

Tables 2, 3, 8 and 9 provide allowable loads for glulam beams used as simple span roof members for non‑snow loads (DOL factor = 1.25) and in snow load areas (DOL factor = 1.15).

BOISE GLULAM® Beams Floor Load Tables • Uniform PLF load values are limited by shear, moment, total load deflection limited to L/240 and live load deflection limited to L/360.

Glulam beam sizes. Typically, Glulam beam sizes are represented by their width and depth. Depth of Glulam beam are range from 7 1/4 inches (184mm) to 23 7/8 inches (606mm). Width of Glulam beam are range from 3-1/8″, 3-1/2″, 5-1/8″, 5-1/2″, 6-3/4 inches and 7 inches.

Standard depths for glulam members range from 114 mm (4-1/2′′) to 2128 mm (7′) or more in increments of 38 mm (1-1/2′′) and l9 mm (3/4′′). A member made from 38 mm (1-1/2′′) laminations costs significantly less than an equivalent member made from l9 mm (3/4′′) laminations.

Glulam beam sizes are represented by their width and depth. In the US, the depth of Glulam beam are range from 7 1/4 inches (184 mm) to 23 7/8 inches (606 mm). The width of Glulam beams are range from 3-1/8″, 3-1/2″, 5-1/8″, 5-1/2″, 6-3/4 inches and 7 inches.

Glulam is available in both custom and stock sizes. Stock beams are manufactured in commonly used dimensions and cut to length when the beam is ordered from a distributor or dealer. Typical stock beam widths used in residential construction include: 3-1/8, 3 …

Glulam products typically range in net widths from 2-1/2 to 10-3/4 inches, although virtually any member width can be custom produced. Because they are engineered products, glued laminated timbers are manufactured

The standard glulam sizes for spruce, redwood and larch beams are shown below. Click here for more technical information on species , strength grades, span tables , visual grades and connections details , or try our glulam beam price calculator.