Sapwood consist of
1
Which of the following tree yield hardwood
Hardwood - Oak, Teak, Shishum, Poplar, Marple
The radial splits which are wider on the outside of the log and narrower towards the pith are known as
Heartshakes is opposite to starshakes
In which of the following pairs both trees yield soft wood?
Conifers (Softwood): Deodar, chir, fir, kail, pine
Which of the following Timber is suitable for making sports goods?
The disease of dry rot in Timber is caused by
Due to lack of ventilation the tember became dry powder
Plywood has the advantage of
Slats of plywood fitted crossing each other so have greater strengh in all direction.
Which of the following direction the strength of timber is maximum
The moisture content in a well seasoned Timber is
Normal or seasoning reduces moisture upto 12 to 15%
The trunk of tree left after cutting all the branches is known as
The age of a tree can be known by examining
Closer the annular Rings greater the strength
Plywood is made by bonding together thin layer of wood in such a way that the angle between grains of any layer to grains of adjacent layer is
The Plywood
The practical limit of the moisture content achieved in air drying of timber is
Buy natural air seasoning moisture can be achieved up to 12-15%
First Class Timber has an average life of
First class Timber more than ten year life. Moderate Timber 5 to 10 year life. Low quality Timber less than 5 year life.
The seasoning of timber is required to
Seasoning is a process of reducing moisture content by drying under controlled condition.
Plywood is specified by
10mm ply, 12mm ply, 20mm ply etc
Wastage of timber is maximum in the case of
Ordinary Sawing is economical and minimum waste. Radial is most wastage and strongest timber. Tangential is weakest.