Elementary building construction and drawing : stage 1 (1907)
Burrell, Edward J · London : Longmans Green · leaf 100
wall. These fillets support rough boarding termed sound boarding cut \ inch less in width than the space between the joists ; on the sound boarding is sometimes spread a layer about 2 inches thick of a mixture of coarse stuff (rough mortar), sawdust, chopped straw, or hay, etc. This material goes… … Fig. 140. therefore a matter of great importance that all materials mixed with the mortar should be of a mineral nature. Silicate cotton, known also as slag-wool, manufactured from a by-product of iron smelting, is coming largely into use for this purpose. It is spread in a layer about one inch…
Building
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
