Roof Design For Building

There is no great architectural splendour in these roofs.

Roof design for building.

1 3 5 design pressure coefficients for roof zones. Top 15 roof types plus their pros cons read before you build. For buildings with low slope roofs less than 2 12 slope the wind speed at eave height is used. Here we have a wood framed gable roof.

Flat garage roof design. Continuing on from part 3. It s steep pointed roof which extends all the way to the ground. This design is often incorporated to add to the beauty of the house.

The a frame is very easy to identify. The butterfly roof is an. The bonnet roof is identified with the extending ledge around the base of the roof. Also known as pitched or peaked.

Flat roof designs are quite common in residential buildings. It will be much more difficult to build a round roof onto a square building for instance so allow the shape of the structure to guide you. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. You can go for an extended roof that covers a few feet outside the external walls of the house.

Also known as the french roof the mansard is characteristic of french building architecture though many homes take advantage of it s framing design. Roof design wind pressures are determined using the wind speeds at the mean roof height of the building i e average of the eave and ridge heights. In cold climates the primary purpose of attic ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic. Most flat roofs are not really 100 flat but rather they are low sloped roofs that appear flat but have a little.

The two major categories of roof are flat and pitched and one of the main things that will determine the actual style of roof you need is the shape of the building. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. The other part of the.

Add the length of the overhang beyond this mark and. Position the square at the end of the rafter board with the tongue on your left and facing away from you. Roof type chart 1. It may consist of a flat roof on top but the main design element is the multi pitch sloped in what is essentially a hip roof on top of another hip frame.

Let s consider a basic gable wood roof framing design.