Posi Joist Flat Roof

The full version allows any size.

Posi joist flat roof.

Posi joist also known as metal web joists combine the light weight of timber with the strength of a steel web. This extension to a veterinary practice in north cheam in surrey required a flat roof approximately 130 metres square. The posi joist gives building designers the freedom to have a variety of internal room layouts without the constraints of solid and other engineered timber. Top hung joists can be supported from trimmers with no need for a hanger.

To build a roof joist for a flat roof you need some carpentry skills and a few basic tools. In roof applications posi joists are incredibly versatile and can be used for flat low and steep pitched roofs. Posi attic trusses combines the solid feel of a posi joist with the benefits of a conventional attic truss. Flat apartment floor.

Select floor or roof type. Flat roof joist calculator. Posi joist can adequately span for floors and for flat and pitched roofs often allowing for increased joist centres when compared to alternative systems. The strength of the posi joist floor provides greater room widths for increased living space within the attic delivering maximum value to the client.

This demo version is fixed at 1m clear span. These chords are plated together with a precision engineered and manufactured structural component called metal web these when combined form the easi joists. Maximum clear span of flat roof joists in metres for sc3 timber spacing between joists size of roof joist 400mm 450mm 600mm 47 x 97 1 84 1 81 1 74 47 x 120 2 43 2 39 2 27 47 x 145 3 08 3 02 2 87 47 x 170 3 75 3 67 3 42 47 x 195 4 41 4 31 3 92 47 x 220 5 04 4 85 4 41 75 x 170 4 50 4 38 3 99. It s span capability and wide timber flanges make it the more desirable alternative to all steel systems.

Their strength means they can span greater distances than other systems and often eliminate the need for beams and purlins. 1 enter joist details 1 1 span and joist spacing. The following easi joist. Code of practice for permissible stress design materials and workmanship and bs 5268 7 2 1989 structural use of timber section 7 2.

This is the distance between joist centres. How to install joists for a flat roof the roofing surface is installed over the joists while insulation is placed between them and the ceiling beneath is suspended from them.