Question

Figure below is a section of a roof, identify the type _________

(a) Salt Box roof

(b) Hammerbeam roof

(c) Mansard Roof

(d) Pyramid roof

The question was asked in an interview for job.

Question is taken from Wooden and Steel Roof Truss in chapter Different Type Roofs, R.C.C of Civil Engineering Drawing

Answer 1

The correct answer is (b) Hammerbeam roof

To explain I would say: The hammerbeam roof was the culmination of the development of the arch-braced truss, allowing greater spaces to be spanned. The hammerbeam roof of Westminster Hall in London, designed by Hugh Herland and installed between 1395 and 1399, was the largest timber-roofed space in medieval Europe, spanning a distance of just over 20 metres (66 ft). It is considered to be the best example of a hammer-beam truss in England.

Hammer beam trusses can have a single hammerbeam or multiple hammerbeams. A false hammerbeam roof (truss) has two definitions: 1) There is no hammer post on the hammer beam as sometimes found in a type of arch brace truss or; 2)The hammer beam joins into the hammer post instead of the hammer post landing on the hammer beam.