Lecture 4 Professional training course .pdf
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The document outlines the process of preparing a detailed estimate for constructing a wall at Abrar University, including methodologies for calculating quantities such as earthwork and brickwork. It explains two main methods for measuring wall lengths: the long wall-short wall method and the centre line method, along with specific calculations and examples. The document also provides formulas for determining the lengths of long and short walls based on their dimensions.
Lecture 4 Professional training course .pdf
- 1. Instructor: Er. Ahmed Baasaay LECTURE 4 ABRAR UNIVERSITY
- 2. Estimation of a wall Prepare a detailed estimate of a wall of building from the given plan and section and general specifications
- 7. Exercise Prepare a detailed estimate of a wall of building from the given plan and section and general specifications:-
- 10. ABRAR UNIVERSITY
- 12. ABRAR UNIVERSITY
- 13. Methods of taking out quantities: The quantities like earthwork, foundation concrete, brickwork in plinth and superstructure etc., can be workout by any of the following two methods: 1. Long wall-short wall method. 2. Centre line method 3. Partly Centre line and long and wall method. ABRAR UNIVERSITY
- 14. 1. Long Wall and Short Wall Method - For the calculating quantity of various construction item, long wall and short wall method is used. - For measuring the long wall and short wall the external out-to-out length of walls running in the longitudinal direction generally is considered as “long wall” . - While the in-to-in internal length of walls running in the transverse direction is called as “short wall” or “cross wall”. - For calculating quantity multiply the length into the breadth and height of the wall. - Length of Long Wall = Center to Center Length of wall + Half Breadth on One Side + Half Breadth on the Other Side. - Length of Short Wall = Centre to Centre Length – Half Breadth on One Side - Half Breadth on One other Side
- 15. Explanation: Centre to center of long wall: 5m + 0.3/2 + 0.3/2 = 5.3m Centre to center of short wall: 4m + 0.3/2 + 0.3/2 = 4.3m Long wall = center to Centre length – 2 x half breadth = 5.3m + 2 x 0.3/2 = 5.6 Long wall = 5m + 2x0.3 = 5.6m Short wall = 4m Long wall= centre to centre of long wall + 2x half thickness of wall Long wall = 5.3m + 2 x 0.15m =5.6m Short wall= centre to centre of short wall – 2 x half thickness of wall • Short wall = 4.3m – 2 x 0.15 = 4m
- 16. G.L • - Centre to Centre length of long wall = 5+ (1/2×0.30) + (1/2 x 0.30) = 5.30 m - Centre to Centre length of short wall = 4+ (1/2 x 0.30) + (1/2×0.30) = 4.30 m - Long wall = 5.3 + 2 x 0.45 = 6.2m - Short wall = 4.3m – 2 x 0.45 = 3.4m Calculate the following quantities: Earthwork in Foundation, Concrete in foundation, Brickwork in plinth and superstructure