28
Rules for
measuring height of
height of walls.
BUILDING (CONSTRUCTION) REGULATIONS, 1966
43. (1) For the purposes of regulations 45 and 46, the height of the lowest or only storey shall be measured from the base of storeys and the wall, and the height of any other storey shall be measured from the level of the underside of the floor structure of the storey to the level of the underside of the floor structure next above il or, if there is no such storey, then to the highest part of the wall or, in a storey comprising a gable, to half the height of the gable.
Kules for measuring length of walls,
(2) The height of a party wall comprising a gable shall be measured from its base to the base of the gable; the height of any other wall comprising a gable shall be measured from its base to half the height of the gable; and the height of any wall not comprising a gable shall be measured from its base to its highest part excluding any parapet which does not exceed 4 feet in height.
44. (1) For the purposes of regulations 45 and 46, walls shall be deemed to be divided into distinct lengths by piers. buttresses, chimneys or dividing walls. Such piers, buttresses. chimneys or dividing walls shall be bonded into the walls, and-
(a) in the case of a pier or buttress shall-
(i) extend upwards from the base of the wall to the top of the wall;
(ii) be, at any height, not less in thickness (measured so as to include the wall) than three times the thickness of the wall; and
(iii) be not less in breadth than twice the thickness of the wall;
(6) in the case of a chimney shall have a horizontal sectional area, excluding any fireplace opening or flue, of not less thon the area required for a pier or buttress and an overall thickness of not less than three times the thick- ness of the wall it is deemed to divide; and
(c) in the case of a dividing wall shall, if an internal load bearing wall comply with the requirements of regulation 4701) and in any case be of a thickness of at least one half of that prescribed by regulation 45 or 46 in respect of the wall which it is deemed to divide and shall have a length measured at right angles to the buttressed wall equal to not less than 3 of its height.
BUILDING (CONSTRUCTION) REGULATIONS, 1956
(2) All measurements of length of walls shall be made from the centres of the return walls, dividing walls, piers, buttresses or chimneys.
29
of external
45. Except as provided in regulations 53 and 61 every Thickness external and every party wall built of bricks or building blocks in a building other than a public building or a building of the warehouse class shall be--
walls and party walle of buildings other than public buildings or buildings
(a) of not less thickness than that specified in Table X; (b) built in cement mortar or cement lime mortar containing of the
not more than 6 volumes of sand to i volume of cement. warehouse
clau..
TABLE X.
Thickness of external and party walls of buildings other than publie buildings or buildinga of the warehouse clasa.
Height of wall
Not
Length of wall
Thickness of wall
Exceeding Exceeding Exceeding
Not Exceeding
Feet.
Feet.
12
Fret.
Feet.
61" throughout.
83* throughout.
12
21
30
24
36
30
38
20
48
30
I
20
30
13” throughout the lower- mast storey; Bk" through- out the rest of the wall.
13" throughout the lower- | most storey; 81" through- out the rest of the wall.
13" throughout the lower- most two storeys; B1′′ throughout the rest of the wall.
172 throughout the lowermost storey; 137 throughout the next two storeys: 81" throughout the rest of the wall.
173 throughout the lowermost two storeys: 13" throughout the next ;alorey; 8}" (hroughout
the rest of the well.