Stone Masonry Wall Thickness
Thickness requirements of rubble stone walls.
Stone masonry wall thickness. The thickness of stone wall should not be smaller 406mm 16 in in any case. Stones are arranged at random in random rubble masonry. The size of the stones blocks should be in proportion to wall thickness. Decrease the stone thickness from the bottom to the top of wall.
The art of building a structure in stone with any suitable masonry is called stone masonry. The backing of masonry ashlar walls may be built of ashlar masonry or rubble masonry. The size of stones blocks should be in proportion to wall thickness. Ensure that the headers in the heart of the wall are the same size as in the face and extend at least 12 in 300 mm into the core or backing.
Empirically designed unreinforced bearing walls of one story buildings must be at least 6 in. The offsets to be provided in rubble masonry construction have to be 75 mm 3 inches on either side. In this masonry the joints are not of uniform. The brick masonry construction proceeds very quickly whereas the stone masonry construction proceeds vary slowly as the bricks are handy whereas stones are not.
Thickness of non load bearing masonry walls. For buildings more than one story high walls must be at least 8 in. Stone masonry may be broadly classified into the following two types. The stone masonry in which either undressed or roughly dressed stone are laid in a suitable mortar is called rubble masonry.
The minimum thickness of parapet wall can be assumed to be 203mm 8 inch and its height should not be larger than three times the wall thickness. The minimum thickness for unreinforced masonry shear walls and for masonry foundation walls is also 8 in. Avoid dumb bell shaped stones ensure that headers in walls of 2 feet 600 mm or less in thickness extend entirely through the wall. The minimum thickness of random rubble work that can be constructed with great care is 225 mm 9 and with ease 300 mm 1 ft.
Ashlar masonry this type of masonry is built from accurately dressed stones with uniform and fine joints of about 3mm thickness by arranging the stone blocks in various patterns. The minimum thickness of wall in stone masonry can be 35 cm whereas in brick masonry walls of 10 cm thickness can be constructed.