The present method of design for walls does not
accurately predict the strength and stiffness of walls
because load sharing and composite action are not taken
into consideration. This results in the use of higher
strength materials and walls which are overdesigned.
A new method of design for walls using...
The Philippines relies heavily on timber product exports for its foreign exchange requirements. In recent years, however, it adopted log export restrictions as a hedge against the rapid depletion of its timber resources. Although conducted independently, its ASEAN partners (Malaysia and Indonesia), have likewise instituted similar restrictions on their own...
Operations research is concerned with the science of decision and uses mathematical models to aid in making these decisions. In this thesis operations research is used in connection with the lumber industry. The problem of concern has to do with a lumber company that is unable to supply the mill...
A mathematical and then a numerical model were developed for simulating a
convective batch lumber drying process. The model incorporates mass and heat
transfer relationships within the lumber stack, as well as thermodynamic properties of
the wood and drying air. It takes into account a change of air properties along...
Variability in wood properties causes boards within a stack of lumber to
dry at different rates and reach different moisture content levels after drying is
completed. The consequence is that the boards will have properties that differ from
ones that were intended to be achieved by the drying process.