Glulam Curved Roof Construction Details

Much of this growth is attributed to the fact that glulam beams are available from building material dealers and distributors in stock sizes typical widths.

Glulam curved roof construction details.

Connections for glulam beams are typically made with bolts or steel dowels and steel plates. They are commonly used for large curved or arching members to build vaulted roofs domes and even bridges. In timberlab s unique system each single piece of timber is graded to ensure the design values are met. Curved glulam is manufactured by bending the laminated boards before they are bonded together with adhesives clamped and cured.

Curved roof shapes are currently the height of fashion at least on upmarket builds. 3 1 8 3 1 2 5 1 8 and 6 3 4 inches. This is a strength value which corresponds well with what is currently applied as design value for glulam. In structural terms they tend to be variants on flat roofing using curved timber glulam beams under a plywood covering.

Use beam stress combinations e g. Inside radius of 20 0 or more allows use of 2 nominal laminations. We can manufacture most custom curved shapes including s curves side curves parabolic arches double compound curves and tight radius curves with a radius as tight as 2 0. Can manufacture a variety of different types of curved glulams including the standard constant radius curve tudor arches and peak and cambered glulams.

Glulam arches with tie rods had the considerable wide span of 43 m. Glulam uses stress rated seasoned and selected timbers usually radiata pine or douglas fir. Timberlab glulam timber beams are load bearing structural members for roofs floors and other construction situations e g. Glued laminated timber constitutes an ever increasing percentage of the framing materials used in residential construction.

Glue laminated timber glulam is a structural engineered wood product commonly used for beams and columns in residential and commercial applications. Do not place glulam in direct contact with masonry or concrete. Use beam stress combinations e g. It was shown that for large building structures.

Glulam construction offers superior strength and stiffness over dimensional lumber and pound for pound it is stronger than steel. One of the greatest advantages of glulam is that it can be manufactured in a wide variety of sizes. They are generally covered in either a metal like zinc or copper or with a green roof made up of turf planted with sedums. Allow for dimensional changes in glulam due to potential in service moisture cycling.

Glulam beams with constant cross section and radius for barrel or dome roof profiles. Optimal roof pitch is 2 12 to 3 12 though other roof pitches are possible. Avoid moisture entrapment at connections. The tension allowed for the glued beams was 136 kg cm2 13 6 n mm2.

Avoid the use of details that induce tension perpendicular to grain stresses in a member.