Archive for January, 2010
Tubular Steel Roof Truss | Trussed large span Constructions
Posted by BenzuJK in Building Construction on January 20, 2010
Tubular Steel roof trusses are used for large span constructions such as factories, industry worksheds, shopping malls, huge exhibition centres, multiplexes etc. They are generally used for spans as large as 25-30m.
Tubular Steel Roof Truss
Tubular Steel Roof Truss
- It is in two halves with bolted joints at P and Q, the remaining joints being 5mm fillet welds made in the workshop.
- The main tie member rises 130mm from L to N to counteract any appearance of sag that would be evident if it were horizontal.
- A bend a N reduces the midspan height to 2m so that the half truss is a manageable size for transportation.
Plate Girders | Structural Steel Components
Posted by BenzuJK in Building Construction on January 13, 2010
- The plate girders are used to carry the loads beyond the capacity of universal beams. They consist of plates and angles riveted together.
- Plates and angles form an I-section.
- They are used in building construction and also in bridges.
- Plate girders are economically used for spans upto 30m.
- In common, section used for plate girders are shown in figure.
Figure (A)
Simple Plate Girder
It shows the simplest form of plate girder.
Dormer Window | Architectural Construction
Posted by BenzuJK in Building Construction on January 8, 2010
- A dormer window is one which projects from the roof or as an extension of the main windows.
- It is used to provide daylighting within the roof space when it is used as a room. It also serves as an architectural feature of interest.
Dormers - as an architectural feature
Dormers are useful in Bungalow construction for providing additional habitable rooms with the normal roof structure.
The building regulations state that the ceiling height of the room must be atleast 2.3m, not less than half the area of the room measured at a height of 1.5m above floor level.