Floor beam span tables of residential structural design we will now look at roof rafter and beam design.
Long span roof design.
Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.
The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.
Let s consider a basic gable wood roof framing design.
Architectural appeal drives the design of such structures but many factors working simultane ously and in varying degrees must be analyzed in long span design.
Long span roofs are generally defined as those that exceed 12 m in span.
But the complexity of long span design increases exponentially when snow load wind load seismic load deflection serviceability and the dead weight of the floor or roof system are all factored in.
Aep span has been a trusted brand for over 45 years with showcase projects across the western united states.
Roof trusses are actually engineered all of our trusses have an engineer seal on them which means they have met universal standards trusses are built in a controlled environment out of the elements of weather.
Long span roof truss design hood roof.
Because of the quality and design multi r span roofing profile was chosen for toyota show rooms.
Aep span offers a portfolio of quality metal roof and walls which have been tested by an accredited third party and provides inspiring solutions architects can rely on to design and build with confidence.
Continuing on from part 3.
Puyat steel corporation s multi r span roofing profile received the architects choice award in year 2014 because of its evenness of aesthetics and strength.
They are commonly found in a wide range of building types such as factories warehouses agricultural buildings hangars large shops public halls gymnasiums and arenas.
Bonnet roofing systems are basically a mansard roof backwards.
This means the building process isn t affected by rain or snow trusses span greater distances without having to be supported.
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Here we have a wood framed gable roof.
Long span roofs can create flexible column free internal spaces and can reduce substructure costs and construction times.