One Way Roof Design

It is a common roof on sheds and other outbuildings and is frequently used on carports patios porches and small additions to a house.

One way roof design.

A slanted shed roof can easily be built if one of the walls of the shed stands taller than the opposite one. The load on the slab is carried by the short span in one direction. Usages vary slightly from region to region or from one builder or architect to another. The bonnet roof is identified with the extending ledge around the base of the roof.

Roof shapes differ greatly from region to region. Longer span l shorter span b 2. When a slab is supported on all four sides and the ratio of long span to short span is equal or greater than two it will be considered as one way slab. Significantly cheaper to build than a gable or multi slope roof since there s less material in the roof.

The intent is to create a uniform edge on the outside but a varying profile on the inside along the sloping roof. Some of the prominent examples of the one way slabs are the cantilever slabs chajjas and verandahs. One way is to design the roof to have a parapet wall covering the roof edge. Roof type chart 1.

Normal weight aggregate concrete is specified with a density of 145 pcf. It s steep pointed roof which extends all the way to the ground. It also is often used on dormers extensions built on a basic roof to provide more light or space inside. Another is to create a custom gravel stop drip edge flashing piece that changes profile along the length of the roof to compensate for the change in pitch.

Design a one way slab for the inside of a building using the span loads and other data given in figure 1. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering. The butterfly roof is an. The shorter span of one way slab is provided with the main reinforcement while the longer span is provided with the distribution reinforcement.

If both walls are the same height you can either raise one by adding plates to it or you can build a frame for the wall separately and then install this on top of the wall. Once your walls are uneven you can build a slanted roof to fit. Assuming cover 3 4 in figure 1 the minimum thickness for one way slab simply supported l 20 using table 1 aci 9 5 2 1. Roof terminology is also not rigidly defined.

The a frame is very easy to identify. The other part of the.