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THUMB RULE TO CALCULATE THE THICKNESS OF RETAINING WALL – BREAST WALL – PARAPET WALL


In this article, I will try to explain the THUMB RULE TO CALCULATE THE THICKNESS OF RETAINING WALL, BREAST WALL, PARAPET WALL

THUMB RULE TO CALCULATE THE THICKNESS OF RETAINING WALL – BREAST WALL – PARAPET WALL

CONSTRUCTION OF HILL ROAD:

RETAINING WALL:

The RETAINING WALLS are the most important in HILL ROAD CONSTRUCTION to provide

adequate stability to the road way and to the slop. The RETAINING WALLS are usually constructed on the valley side of the road way and also cut hill side to prevent slide towards the roadway. The thickness of the RETAINING WALL at the top is usually kept as 60 cm and at the bottom at may be kept according to the following thumb rule:

1- For RETAINING WALLS less than 6 m in height, THICKNESS OF THE RETAINING WALL at the bottom is equal to 0.4 times the height of the RETAINING WALL.

2- For RETAINING WALLS more than 6 m in height, THE THICKNESS OF THE RETAINING WALL at the bottom is equal to 0.4 times the height plus 30 cm.

3- A better of 1 I 12 slope may be given to the wall on the outside.


BREAST WALL:

The BREAST WALLS are constructed on the hill side of the roadway to retain the earth from slippage. The THICKNESS OF THE BREAST WALLS may be kept according to the following thumb rule:

1- The BREAST WALLS may be kept 60 cm thick throughout and sloped along the natural slope of the earth, it has to protect.


PARAPET WALL:

The PARAPET WALLS are usually required on the valley side of the roadway in order to guide the vehicles properly to the roadway. The THICKNESS OF PARAPET WALLS may be kept according to the following thumb rule:

1- THE THICKNESS OF THE PARAPET WALLS is uniform throughout and may be kept as 60 cm.

2- The Height of the PARAPET WALLS is usually kept as 75 cm above the berm level.

I Hope that this article will help you a lot in understanding about the THUMB RULE TO CALCULATE THE THICKNESS OF RETAINING WALL, BREAST WALL, PARAPET WALL

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