Archives: Library Snippets

  • Asbestos-Cement Roof-Sheeting

    —

    by

    zezuru_mv55g8

    (1) Asbestos-cement corrugated sheets for roofing shall comply with requirements of C.A.S. 198 or B.S. 690, and asbestos-cements ridging , barge-boards , flashings and other accessories shall be of material of similar quality and thickness (2) Except as provided for in subsection (3), where asbestos-cement roof-sheeting is used on a roof, the roof shape shall…

  • Asbestos-Cement Roof-Slates

    —

    by

    zezuru_mv55g8

    (1) Asbestos-cement slates shall comply with the requirements of B.S. 690 or C.A.S. 198. (2) Slates shall be laid so that the following requirements are met- a) each course shall overlap the second course below it by not less than- (i) for a diamond or honeycomb pattern, 75 millimetres ; and (ii) for rectangular pattern,…

  • Bituminous-Felt Built Up Roof-Coverings

    —

    by

    zezuru_mv55g8

    Bituminous-felt built-up roof coverings shall comply with the following requirements- a) the exposed layer or layers shall comply with the requirements of C.A.S. NO. A30, Bitumen roofing felt surfaced with natural mineral granules of slate or stone rolled into the surface during manufacture in such a manner as to form a closely compacted surface; b)…

  • Mastic Asphalt Roofing

    —

    by

    zezuru_mv55g8

    The mastic asphalt used for roofing shall comply with the requirements of C.A.S. No. A1, Mastic asphalt for roofing (limestone aggregate), or shall otherwise be to the satisfaction of the local authority.

  • General

    —

    by

    zezuru_mv55g8

    (1) Roof-coverings.- All roofs and roof projections of buildings shall be weatherproofed and shall be covered with one or more of the coverings detailed in this Part. (2) The coverings shall be secured so as withstand climatic conditions, such as wind pressure, wind suction and changes in temperature. (3) Notwithstanding the restrictions placed on the…

  • Basements

    —

    by

    zezuru_mv55g8

    (1) Floors.-Basement-floors shall be- a) damp-proof; and b) where ground-water is present or is likely to rise above such floor -level and is to be drained away from the building, the floor shall be laid on a layer, of not less than 100 millimetres in thickness, of broken stone, rubble or other fragmented material, the…

  • Floors

    —

    by

    zezuru_mv55g8

    (1) General.-Solid floors in contact with the ground shall be a minimum thickness of 75 millimetres and shall be so constructed or treated as to render them damp-proof. (2) Where required by the local authority, a horizontal damp-proof course shall be laid under the floor for its full extent. (3) Wash-room and toilet-room floors.- The…

  • Parapets And External Projections

    —

    by

    zezuru_mv55g8

    Damp-proof courses shall be provided to parapets and, where required by the local authority, to external projections in such manner as to prevent the passage of moisture into the building.

  • Openings In External Cavity-Walls

    —

    by

    zezuru_mv55g8

    In external cavity-walls, damp-proof courses shall be provided at sills and heads of all openings, to prevent the passage of moisture from the outer to the inner leaves of the wall.

  • Cavity-Walls

    —

    by

    zezuru_mv55g8

    In cavity-walls, damp-proof courses shall be provided in such a manner as to- prevent moisture from the soil or foundation-walls from rising into the wall above the level of the ground-floor or reaching any timber in the floors; and a) allow any moisture from the cavity to drain outwards through weep-holes or open vertical joints…