Jack Arch Roof Section

A jack arch is a structural element in masonry construction that provides support at openings in the masonry.

Jack arch roof section.

The joists are spaced 1 0 to 1 5 m centre to centre and are supported at their ends either on walls or on longitudinal girders. Building construction practices including painting varnishing and allied finishing ced 13 designator of legally binding document. Code of practice for construction of jack arch type of bult up floor or roof. Unlike regular arches jack arches are not semicircular in form.

2 3 hand beater a wooden piece of triangular cross section used manually for beating and compacting lime concrete. The rise of the arch is kept 1 12th of the span. Jack arch roof is composed of arches of either brick or lime concrete supported on lower flange of r s j s. The minimum depth at the crown is kept at 150 mm.

2 4 jack arch floor or roof a type of built up floor or roof supported by iack arches having a levelling course of lime broken brick aggregate concrete laid over them and finiihed. Layer of concrete is then poured over the roof to straighten the roof. Alternate names are flat arch and straight arch. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

Jack arch roof detailed section. The concrete layer thickness over the crown of the arch is not less than 15cm.