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State of Haryana - Section

Section 67 in The Punjab Scheduled Roads and Controlled Areas Restriction of Unregulated Development Rules, 1965

67. Thickness of walls [Sections 8(2) and 25(2)(f)].

(1)Where walls of building are constructed of bricks, stones blocks or of other hard and incombustible material laid in horizontal beds of courses every wall or part of a wall shall be so designed and constructed as to be capable of safely sustaining and transmitting the dead loading and the superimposed loading to which it may be subjected (calculated in accordance with the Schedule II annexed to these rules so far as it is applicable) and the horizontal and inclined forces to which it may be subjected, without undue settlement of deflection and without exceeding the intensity of pressure on the materials as given below:-
Description of wall Allowable safe pressure in tons sq. (Slenderness ratio notexceeding six)
[Burnt bricks in cement mortar, lean mixing for Brick Masonry(1 : 3) to (1 : 4) to (1 : 5) to (1 : 7) respectively] 8
Burnt bricks in lime mortar (1 : 2) or cement mortar (1 : 6) 4
Burnt bricks in mud mortar 2½
Coursed rubble masonry (other than Ashler) in cement mortar(1 : 4) 2
Coursed rubble masonry (other than Ashler) in Lime mortar (1: 2) or cement mortar (1 : 6) 4½
Random rubble masonry in cement mortar (1 : 4) 8
Random rubble masonry in lime mortar (1 : 2) or cement mortar(1 : 6) 4
Ashler masonry in cement mortar (1 : 3) with (1 : 3 : 6) massconcrete backing 12
Ashler masonry in lime mortar 1 : 2 or cement mortar 1 : 6with 1 : 4 : 8 mass concrete backing. 12
Blocks in 1 : 3 cement mortar average crushing strength ofblock not less than -  
500 lb/sq. inch 2
1,000 lb/sq. inch 4
2,000 lb/sq. inch 8½
*Substituted vide Haryana Notification No. 1996 dated 22-12-1997.Explanation. - Average crushing strength of individual burnt bricks when determined by standard test approved by the Director to be not less than 1,500 lb/s. inch. Allowable stress can be increased by 20 per cent in the case of local loadings.For occasional loads such as wind and earthquake forces the allowable stress can be increased by 33 per cent.When sheering or tensile stress occurs the permissible stress to be taken in one-tenth the maximum pressure figure given above.