ENB205 Chapter Notes -Vinyl Acetate, Dendrochronology, Crc Press
Document Summary
For ultimate strength and to fit within the client"s criteria, a truss design will be used for the observation deck. Not only does a trussed cantilever better strength than a suspension design it also ensures that there are no obstructions to the view above the deck. This will give sightseers 360-degree views of the breathtaking scenery around them. Truss girders are an efficient and economical structural system where the material is fully utilised. For short to medium spans, it is more economical to use a parallel chord truss such as a warren, pratt or howe truss as these designs minimise the cost of fabrication and erection. However for short spans, a warren truss is more appropriate as it is more economical as it uses fewer materials than a howe or pratt truss. For aesthetic purposes, it is ideal to have an even number of bays on a pratt or warren design to avoid a central bay with cross diagonals.
