Also known asplumb lineplumb bobsoot sahulsut and sahulसाहुलसूत साहुलसावल
A wall that leans even slightly unbalances the gravitational force in the room; the person who sleeps there stays ill and troubled, has bad dreams and does not sleep well.
Sahul (plumb line)
Walls, especially bedroom walls
Gravitational force acts between the earth and every building, object and person. When columns, beams, walls, plaster and elevation are aligned with plumb line and level, the force stays balanced and the occupants remain healthy and alert; misalignment brings obstacles, illness and loss.
Sahul (plumb line)
Plinth beam, columns, beams, walls and elevation
Even a main door placed on a correct pad such as E3 or E4 gives no result if its threshold (dehleez) is not at water level or the door leans. A door leaning outward slowly empties the house, and one leaning inward invites illness.
Sahul (plumb line)
Main door and its dehleez (threshold)
In the Jain account, during the bhog bhoomi of the third era kalpavriksha trees granted every wish, until rising sin made them stop giving. Adi Prabhu then taught the six means of livelihood, asi, masi, krishi, vidya, vanijya and shilpa, and gave the complete knowledge of Vastu to his fourth son Vishwakarma.
Natural materials hold planetary energy while petroleum by-products hold none. Use fire-baked clay bricks, lime where possible, no more than two or three species of wood and black basalt road metal, and build walls in plumb with a honeycomb bond.
Whole building
Even an N4 door fails if it leans, has holes, stands at a dead end, is reached from the back of the house, or is obstructed by a pit, tree, pillar or T in front. Such defects (dwar dosh and dwar vedh) cancel the good of the pada.
Plumb line (sahul) to check the door
Main door and the area just inside and outside it
When the route to the boundary gate is heen bahu (anti-clockwise) or prishth bhang (circling the house), when there is any dwar vedh in front such as a T-point, shool vedh, pole, tree, pit or garbage, when the house faces a cremation ground, or when the door is out of plumb and leans inward or outward. In any of these cases even doors on N3, N4, E3, E4, S4 or W4 do not give their results.
First check whether the door is in plumb and level with a plumb line and water level, and whether a wall or another door stands in front of it. In this case the entrance was fine; the real cause was a full basement in the South and West portion, together with a problem in the North-East.
They are the mason tools for checking that a wall or door is true: a plumb bob hanging on a thread like a pendulum shows whether it is in one line from top to bottom. Masons also use a guniya (L-shaped square) and a water level, and a vastu consultant should carry the plumb line and water level.