TIMBER:

1.    Timber used for construction should be well seasoned  it should not contain moisture more than 12%

2.   The seasoning should be done by either natural or artificial seasoning

3.    Timber should be from the heart of hard wood tree

4.    It should be free from knots, shakes, warp, white patches, crakes and holes

5.    It should not be affected by termites

6.    The cross section of the timber should show uniform colour and texture

7.    The grains of the timber should be seen when cut

                        8.   The timer should be hard and strong but should be easy to work with using                                      tools. The timber should not split or crack when making Tennon, Mortises                                      and   other  joints
                        9.   Different species of timber can be used in different purposes 
                               A. Central province teak (CP teak), Ghana teak, Burma Teak can be used for                                frames , wooden trusses and rafters, furniture etc
                               B. Species such as Sal, Silver etc. should be used for rough work, door                                                frames, concealed frame work for partition false ceiling etc
                               C. Burmah teak, High quality CP teak, sesam etc, can be used for decorative                                      work which is polished