Skillion Roof
A02 Full Size
Option 1: Spanman
Claire Robertson Student No. 638337 Semester 2/2013 Group 13
References: Ching, F D K, 1943, Building Construction Illustrated, John Wiley & Sons, Inc., New Jersey Author Unknown, 2013, Skillion Roof, Build, viewed 29th August 2013, <www.build.com.au> Author Unkown, 2013, Roof cladding materials and benefits, KBE, viewed 29th August 2013, <www.kbe.net.au>
I have decided to design a low slope Skillion roof. Skillion roofs are economical, fast and simple to construct with a strong design element (Build 2013). The flat plane angle means this roof design is very efficient in water drainage (Build 2013). While this skillion style roof design has historically been used for sheds and industrial buildings, but has recently become more regularly used in residential properties (Build 2013).
Aesthetic Design and Functionality I decided to use a skillion roof design because I believe its simplicity and practicality is quite beautiful. The style evokes a rural and industrial theme in the building.
A wall of windows joins the two sections of roof, as well as triangular windows joining the roof to the walls of the building. This introduction of windows allows a lot of natural light to flow into the building at all times of the day, reducing the electricity consumption and enhancing the buildings atmosphere. The over lapping of the two section of roof minimizes the amount of direct sunlight that will enter the building to stop it from over heating.
The roof over hangs the walls of the building on the northern, southern and eastern sides for design aesthetic and because it is more practical for users of the building if it is raining etc. The roof extends to create a balcony over the decking at the northern end of the
Materials and Construction The roof panels are supported by timber rafters, which run vertically, joining both sections of roof to each other and the walls of the building, while also framing the windows. The rafters absorb the tension forces created by the roof structure and carry them down into the walls of the building, while also protecting the windows from carrying these forces (Ching 1943). Two timber columns support the balcony at the northern end because the over hang is too large to be counter-levered (Ching 2013).
The eaves on the southern and eastern sides as well as the overhang of the southern roof piece are counter-levered and need to be sufficiently supported (Ching 1943). The rafters are covered with plywood sheathing in preparation for the metal roof cladding (Ching 1943). The roof cladding is corrugated iron to enhance the rural and industrial aesthetic of the roof design, as well as been a cost effective and efficient material because it is light weight and low maintenance (KBE 2013).