Timber Joinery

Timber should  be  of quality viz  1st class hard/wood soft wood or 2nd class hard wood soft woodland of correct species as specified. This  requires bow ledge of timber  anatomy to some extent and  ability  to distinguish between different species, if necessary, with the help of a hand lens, magnifying 10 to  12 times and a sharp knife to make fresh cuts at ends of samples. Usual method is to compare pores/texture/pattern of known samples with that required to be identified. Forest Research Institute and College, Dehra Dun have published literature on the subject which may be studied for the purpose. Indian  Standards should  also be studied when published. Apart from the..species, timber trust  be sound, of uniform colour and texture, seasoned and free from knots, incipient decay and unwarped. Timber should be stored in dry  and well-vgntilated condition away frong  contact of dainty wall/earth.

Additional points are as under: 

1. See that the timber used is of correct species, matured growth,  properly seasoned and according to specification. Check the moisture content with a moisture meter. 
2. Watch that joints are properly  made. This is extremely  important :IS  few of the carpenters employed on joinery are really "skilled labour. 
3. See that adequate quantity of while lead/resin glue has  been provided in the joints. 
4. Check and get joinery  passed by your  superior officer to ensure that the finish of the work is good  and that the dimensions of various components are correct. 
5. Ensure that door frames are protected  from falling bricks/stones during construction. 
6. See that  doors with diagonal braces are properly hung so that the brace is in compression. 
7. Ensure that the door stoppers are fixed in line with  the middle hinge: both of which should be of the full thickness of the shutters.