Content Page: 5 Masonry and Walling

  • Concrete In Walling

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    (1) Concrete used in walls, piers and columns, and in foundations for them, shall except where otherwise specified, be made, placed and cured in accordance with the requirements of the appropriate Central African, and, in addition, shall comply with requirements of the of the following subsections. (2) Normal concrete, other than light-mass concrete used in…

  • Mortars

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    (1) Mortars: classification.-Except where gypsum is required by section 36, or where another mortar is permitted under subsection (8) , mortar shall be one of the classes specified in Table III to subsection (7), and shall otherwise comply with the requirements of this section relating to its class. The requirements of this section relating to…

  • Workmanship

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    (1) Except where the local authority considers it to be unnecessary or inadvisable, all walls shall be plumb, and shall be adequately braced during construction. (2) Except for concrete and soil-cement building-units, which shall be kept in a dry condition, all masonry building-units shall be thoroughly wetted with water immediately before being laid. (3) Except…

  • Bond

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    (1) Except in rubble stone wall, the vertical joints in successive courses in masonry walls shall break joint to the extent of at least a quarter of the length of a building-unit. (2) Whenever the thickness of a solid wall of bricks or blocks is composed of more than one building-unit, either wall ties shall…

  • Load-Bearing Surfaces

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    (1) Except as specified in subsection (2), all building-units in masonry construction shall be laid in horizontal courses with their load-bearing surfaces horizontal. (2) The exceptions to subsection (1) are- a) stones in random rubble stone walls; b) stones in natural stone bearing-walls, in which case the beds of the stones shall be approximately level…

  • Loading Of Masonry Members

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    (1) Where floor-slabs or other slabs or beams are supported by masonry or plain concrete walls, piers or columns, no loads other than the normal surface finishes shall be superimposed upon such supporting members, unless adequate falsework is left or placed under them to carry such superimposed loads without undue deflection, until- a) such time…

  • Support Of Walls

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    (1) Every wall supported by another all or a structural member shall be supported on a foundation complying with the provisions of Chapter 4, except where the local authority permits the construction of a wall on solid rock after having satisfied itself that the safety of the building will not be endangered by the omission…

  • Walling Of Unspecified Materials

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    (1) For the purposes of this section – “structural damage” shall mean a cracking, spalling or crumbling of the surface of the wall which is readily visible to the naked eye. The fracture of glass in adjacent windows or damage to applied finished shall not be deemed to be structural damage to the wall; “structural…

  • External Walls To Be Weatherproof

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    (1) Every external masonry or concrete wall of a habitable portion of a building shall be capable of withstanding the artificial rain test described in the Second Schedule and shall be- a) constructed of masonry building-units so as to be at least 200 millimetres thick; or b) constructed of plain normal concrete at least 200…

  • Requirements For Materials And Building-Units

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    (1) Materials not provided for in these by-laws.- Subject to the provisions of section 7, building materials not provided for in these by-laws may be used in walling if they comply with the terms of a departure certificate or authorization granted in terms of Part VII of Chapter 2. (2) Second-hand materials.- Second-hand building materials…