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.

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. Connections for glulam beams are typically made with bolts or steel dowels and steel plates. Glulam beams with constant cross section and radius for barrel or dome roof profiles.

It is a highly visible form of mass timber in contemporary projects with long spans framing signature designs left exposed to take advantage of wood s natural aesthetic. Curved glulam is manufactured by bending the laminated boards before they are bonded together with adhesives clamped and cured. Avoid eccentricity in joint details. In timberlab s unique system each single piece of timber is graded to ensure the design values are met.

Timberlab glulam timber beams are load bearing structural members for roofs floors and other construction situations e g. 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. Glulam uses stress rated seasoned and selected timbers usually radiata pine or douglas fir.

Curved roof shapes are currently the height of fashion at least on upmarket builds. They are generally covered in either a metal like zinc or copper or with a green roof made up of turf planted with sedums. Inside radius of 20 0 or more allows use of 2 nominal laminations. Glulam arches with tie rods had the considerable wide span of 43 m.

The tension allowed for the glued beams was 136 kg cm2 13 6 n mm2. Can manufacture a variety of different types of curved glulams including the standard constant radius curve tudor arches and peak and cambered glulams. Do not place glulam in direct contact with masonry or concrete. Use beam stress combinations e g.

Allow for dimensional changes in glulam due to potential in service moisture cycling. 3 1 8 3 1 2 5 1 8 and 6 3 4 inches. Optimal roof pitch is 2 12 to 3 12 though other roof pitches are possible. It was shown that for large building structures.

Use beam stress combinations e g. The cross sections were almost 3 m high and 30 cm wide. 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. Avoid moisture entrapment at connections.

Glued laminated timber constitutes an ever increasing percentage of the framing materials used in residential construction.