Stone lime should be obtained unslaked. Before being used it must be slaked and sifted through a screen of 400 meshes to the square inch.
Lime Mortar.
Lime mortar to consist of fresh lime mixed by measure with sand or soorki in one of the following proportions, as may be directed:—
(a) 1 Kunkar lime. 2 Soorki. (b) 1 Kunkar lime. 1 Soorki. 1 Sand. (c) 1 Kunkar lime. 2 Sand. (d) 1 Stone lime. 2 Soorki. 2 Sand. (e) 1 Stone lime. 3 Soorki. 1 Sand. (f) 1 Stone lime. 4 Soorki. (g) should not be used in the dry season as it sets too quickly.
The materials should be spread in layers not exceeding 3 inches in thickness, and then incorporated in a steam mortar mill, or bylechuki, with sufficient water to make it into a stiff paste. Mortar which has once commenced to set should on no account be used in any work.
Kunkar or Hydraulic lime must invariably be used for waterworks and for wet foundations.
Soorki.
Soorki must be made from well burnt brick-bats, and must pass through a sieve of 1
16 × 1
16 mesh. Freshly burnt bats must only be used.
Sand.
Sand must be clean, sharp, and free from dirt.