Which method is known as Long Wall short wall method?

Estimate of Building Work By Long Wall Short Wall Method

What is long wall and short wall method of estimation?

Estimate is the method for finding out the quantity of various construction item and materials which are used in construction work. The required dimensions, length, breadth and depth or height, are to be taken out from the drawings i.e. plan, elevation and sections.

What is long wall method?

In the longwall mining method, mine development is carried out in such a manner that large blocks of coal, usually 100 to 300 metres wide and 1,000 to 3,000 metres long, are available for complete extraction (see photograph ).

How the center line method is different from long wall short wall method?

In long wall and short wall method the walls are taken separately, while in the centre line method, the centre line lengths of all the walls are combined.

What is long and short wall?

Explanation: In longwall and short wall method, The wall along the length of the room is considered to be long wall and the wall perpendicular to the length of the room is considered to be short wall.

What are the estimation methods?

Here are six common estimating methods in project management:

• Top-down estimate.
• Bottom-up estimate.
• Expert judgment.
• Comparative or analogous estimation.
• Parametric model estimating.
• Three-point estimating.

What are the methods of estimation?

What is Centre line method?

What Is Center Line Method? In this method of estimation, the total center line length of walls in a building is first calculated, then the center line length is multiplied with the breadth and depth of the respective items to get the total quantity at a time.

What are different methods of estimation?

There are different methods for estimation that are useful for different types of problems. The three most useful methods are the rounding, front-end and clustering methods.

How do I estimate a wall?

Find the total square feet of the wall(s) by multiplying ceiling height by total wall length….An important formula to remember is:

1. Width divided by 12 = number of feet.
2. Number of feet multiplied by 3 (1 yard) = square feet/width (square feet per lineal yard)
3. Divide square feet of wall space to cover by square feet/width.

What is center line method?

What is the difference between centre line method and long wall-short method?

In such cases, centre line method is applied to external walls and long wall-short wall method is used to internal walls. This method suits for different thicknesses walls and different level of foundations. Because of this reason, all Engineering departments are practicing this method.

What are the different methods of wall estimation?

Long wall – Short wall Method. 1 Long wall – Short wall Method. In Long wall – Short wall method of estimation, the external wall along the length of the room is intended to be Long 2 Center Line Method. In Center Line method of estimation, measurements of the wall are taken up-to center. 3 Crossing Method.

How do you calculate the length of a short wall?

Hence, the length of short wall is calculated and is obtained by subtracting half breadth from its centre line length at each end. The length of long wall is generally decreased from earth work to brick work in super structure though the short wall is raised.

What is the center line method of estimation?

Center Line Method. In Center Line method of estimation, measurements of the wall are taken up-to center. Internal measurements are generally taken. The thickness of half wall from one side and thickness of half wall from another side in internal measurements are added in order to determine the length of Center Line of room walls.