Building Construction Materials(Timber)

SAPWOOD
Is the outermost part of a tree trunk or branch. It is the most lighter in colour than the rest. It made up of living cells that transport water and nutrients between inner tissues and outer bark. Its regulates water losses through evaporation and also offers protection over insects and other pests.
The sapwood is named course for its silky appearance when it dries out. This makes it difficult to remove without damaging the timber.

HEARTWOOD
This is the darker coloured wood in the centre of any tree trunk. It is made up of dead cells. That is to say is not affected by water and doesn't float during transportation. Heartwood is often used for construction and furniture because it is light and also very strong.

SOFTWOOD
Softwood has higher density than hardwood. It's used in construction, in not of high strength. Softwoods are made from conifers-pine, for trees and spruce.

HARDWOOD
Hardwood are the most densest and strongest of all woods. Their strength makes them ideal for furniture, cabinetry and flooring construction. Its species include birch, ash, oak and maple.

DIFFERENT TYPES OF TIMBER BASED ON WOOD

Baboon
Mahogany
Cedar
Oak
Walnut
Fir
Cherry
Brich
Pine
Plywood
Cane
Sycamore and many more.