Explain the foundation layout of load bearing structure by centre-line method.

Explain the foundation layout of load bearing structure by centre-line method.
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Foundation layout of load bearing structure by centre line method: 1.One corner of the foundation plan is fixed by measuring the distance from the border of the plot and wooden peg with a nail on the top is fixed to make the first corner of building. 2.From first corner, centre line of foundation is marked with peg. 3.Half width of foundation on either side is marked with peg. 4.Centre line of foundation of wall is set with base line string considering orientation of building. 5.Perpendicular centre line is set with string passing through first building corner centre line peg. 6.All distances on string are measured and pegs are marked. 7.Diagonal distance between pegs is verified on the site as per drawings and if not, then markings are shifted to do find correct. 8.Excavation lines are marked with lime sand powder on either side of centre line string. 9.Centre lines are extended and marked, construct pedestal @ 0.6 m height on the ground and about 2.0 m distance away from centre line. Pedestal top are marked with nail / cross line on plaster for further reference to establish centre line.

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