Timber Design A timber building, using timber floor joists spanning 5.0m, are required to be loaded for a duration of medium-term loading. The timber floor with total dead loads of 1.55 kN/m' and 1. imposed live loads respectively is to be constructed on a simply supported timber floor joists of grade GS, Caribbean Pitch Pine. Ignoring the joists self-weight, select an adequate section to support the above loads for the joist which are spaced at 400mm centre to centre. The sections are also to be checked for bending, deflection and shear capacity.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj