Construction Hints

These are metals in which the valence band are completely filled and electrons are readily available for movement into the conduction band and creating an electron-hole pair in the structure of the material and apparent electrical conditions. Examples of semi conductor materials are group IV elements such as carbon, silicon, germanium, tin. Semi conductor can be classified into two forms : Intrinsic and Extrinsic semi conductor

Stress: This is the intensity of the internal force, which is the magnitude of the sum of forces within a section, is divided by the cross-section. Stress = F/A. (N/m²) Strain: This is the change in the dimension(s) of a material in a state of stress. It can either be comprehensive or tensile. Tensile stress results in extension  of length while comprehensive stress shortens the length of a material. Strain = L-Lo/ Lo

Defect of timber is any features that lowers the technical or commercial value of timber and may leaf to its rejection or its relegation to a lower grade. Example of such are ; Twisting, Decay, swelling etc

Seasoning of timber is the process of allowing timber to dry under atmospheric conditions or reducing moisture content from timber.. This could be Naturally or Artificially induced seasoning.. 1. Natural seasoning : Allowing timber to dry without direct sun light exposure. This could take as much as 6 months. 2. Artificial seasoning : drying of timber using oven. This could take 2 weeks.

                   FACILITY :                                                               DATE :                                             DESCRIPTION REMARKS FIRE 1 Are the numbers of fire extinguishers adequate (check the minimum requirement)? 2 What is the due date for re-inspection of the fire extinguishers? 3 Check the condition of the extinguishers(not rusted or damaged?) ...