How do we find the centre of a plot that is irregular or stretched on one side, since the demonstration used a regular plot?
Finding the centre was covered in earlier classes. Either use software such as AutoCAD, or use the hanging method: cut out the shape, hang it from one point and mark the vertical line, then hang it from another point and mark again; the crossing is the centre. Joining diagonals gives the centre only for a regular plot.
Related questions
Can we join all the corners of an irregular plot into a square and take its diagonals as the centre?
No. When part of the plot is cut, the true centre shifts, yet the square drawn through the corners stays the same, so its diagonals give a wrong centre. Diagonals were used in the earlier zoning class only because that map was regular, with the open parking area at the side.
Is the hanging method an exact way to find the centre (nabhi) of an irregular plot or flat without software?
Yes. Pin the cut-out shape to a wall, mark the point exactly below the pin in a straight vertical line and draw that line; repeat from another point, and the crossing is the centre. It is plain science of the centre of mass, since the side with more area is heavier and hangs lower. Done accurately, it gives a 100% exact centre.
Some people slope the roof into the Brahmasthan and take the water down through a central pipe. Does that affect the house?
Yes, it is wrong. Even if the floors slope to the North-East, a roof whose whole slope falls into the Brahmasthan creates the same defect as a slope toward the centre.
A client's location shows coordinates. What do I do with them?
Copy them and paste them into the Google Earth search bar, which takes you to the place. Then draw a straight line along a wall of the building to get the degree. A degree taken from the centre is wrong; the centre only tells you which direction a room is in.
A gallery or balcony outside a room was open at first and later covered; should it be included in the map?
Include it in both cases, covered or not. You go there and move around in it, so it counts as part of the house.
A regular plot has small strips of land left open at the side and the front. Do we leave them out or zone the complete plot?
Zone the complete plot. Almost the whole plot is in use and even the small strips are being used, so the full plot is taken for zoning and for the degree.