Cross-section of exogenous tree, Civil Engineering

The cross-section of exogenous tree is as shown in given figure.The following components are visible to the naked eye:

1522_cross section of exogenous tree.png

         Cross-section of exogeneous tree

1. Pith: It is the inner most part of the tree and therefore the oldest part of exogeneous tree when the plant becomes old, the pith dies and becomes and dark and fibrous. It varies in shape and size

2. Heart Wood: It is the portion surrounding pith. It is strong and dark in color. This portion is useful for several engineering purpose. It is the dead part of wood. It consists of various annular rings.

3. Sap Wood: It is the layer next to heart wood. It denotes contains sap and recent growth. It takes active part in the growth of trees by permitting sap to move in upward direction. Annual rings of sap wood are less sharply divided and are light in color. The sap wood is also called as alburnum.

4. Cambium Layer: It is a thin layer of fresh sap lying among sap wood and the inner bark. It has sap which is not still converted into sap wood. If the bark is removed & cambium layer is exposed to atmosphere then cells cease to be active and tree dies.

5. Inner Bark: It is a inner skin of tree defensive the cambium layer. It provides protection to cambium layer.

6. Outer Bark: It is the outer skin of the tree and contain of wood fibres. Sometimes it contains cracks and fissures.

7. Medullary Rags: These are thin radial fibers extending from pith to cambium layer. They together hold annular rings. In some of trees they are broken and some other they cannot be prominent.

Posted Date: 10/16/2012 3:10:59 AM | Location : United States







Related Discussions:- Cross-section of exogenous tree, Assignment Help, Ask Question on Cross-section of exogenous tree, Get Answer, Expert's Help, Cross-section of exogenous tree Discussions

Write discussion on Cross-section of exogenous tree
Your posts are moderated
Related Questions
Define Recommendations for Design of PTFE Sliding Bearing? Other Recommendations for Design of PTFE Sliding Bearing 1. Expansion bearings having sliding surfaces of PTFE sha

Explain the concept of average velocity

Process to calculate the Initial Tension The maximum stress induced in the prestressing tendon at the time of the stressing operation is known as initial tension in tendons. T

define compass survey and mention its objectives

Defnition of obstruction

describe two fundamentals purposes of surveying.

The data profile as shown in Figure is obtained. A best average of N values gave N 10 = 21, column loads including dead and live loads ranged from 500 kN to 950 kN. Determine the

Q. Temporary Repairs to rail fracture? If a welding party is not readily available, the fracture shall be repaired by using a cut-rail (not less than 4 meter long) and clamped/

Incoming water contains 2.5 mg/L as a substance of natural alkalinity (HCO 3 - ). The flow rate is 9.5 ML/day). (a) What feed rate is required if the alum dose is 7 mg/L and

this is our final year project .please help me to guide about it