【法规名称】
【法规编号】 79807 什么是编号？
【正 文】
第3页 CAP 123B BUILDING (CONSTRUCTION) REGULATIONS
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[接上页] (L.N. 96 of 1994) Cap 123B reg 10 Cement PART II MATERIALS Cement for general use shall be ordinary or rapid hardening Portland cement of such composition, manufacture and chemical and physical properties as are suitable for its intended purpose. (Enacted 1990) Cap 123B reg 11 Sand (1) Sand shall- (a) consist of naturally occurring sand, crushed stone or a combination of both; (b) be hard, clean and free from adherent coatings; (c) contain no appreciable amount of clay balls or pellets; (d) contain no greater proportion of fine clay, silt or fine dust (being such clay, silt or dust as will pass through a 63 mm sieve) than- (i) 5% by mass in the case of naturally occurring sand; and (ii) 10% by mass in the case of crushed stone.(2) Sand used in mortar or plaster shall contain no harmful material in such quantity as may adversely affect the hardening strength or durability of the mortar or plaster. (Enacted 1990) Cap 123B reg 12 Water Water for general use shall be clean, fresh water free from harmful matter. (Enacted 1990) Cap 123B reg 13 Materials for damp proofing Materials for damp proofing shall be durable, impervious to moisture and in all respects suitable for their purpose, having regard to the particular circumstances of the case. (Enacted 1990) Cap 123B reg 14 Chunam (1) Chunam shall- (a) be composed of cement, hydrated lime, non-organic soil and water to form a durable and impermeable material; (b) be applied in 2 layers, each about 20 mm thick, with a well-keyed surface to the bottom layer and with lapped daywork joints; and (c) where the surface gradient exceeds 1 in 2, be adequately restrained from slipping.(2) A weep hole, with an internal diameter of not less than 50 mm, shall be provided to every 1.5 m2 of the face of chunamed surface and in areas of localized seepage. (Enacted 1990) Cap 123B reg 15 Resistance to sliding, uplift and overturning PART III LOADS (1) Except where otherwise provided in these regulations, a building, street, building works or street works shall be so designed and constructed that- (a) the resistance to the sliding force acting thereon shall be not less than 1.5 times the sliding force due to any loads; (b) the resistance to the uplift force acting thereon shall be not less than 1.5 times the uplift force due to any loads; and (c) the resistance to the overturning moment acting thereon shall be not less than 1.5 times the overturning moment due to wind loads and 2 times the overturning moment due to loads other than wind loads.(2) The resistance to the uplift force shall be calculated as the sum of the downward force due to the minimum dead loads plus that due to any permitted anchoring resistance. (3) The resistance to the overturning moment shall be calculated as the sum of the stabilizing moment due to the minimum dead loads plus that due to any permitted anchoring resistance. (Enacted 1990) Cap 123B reg 16 Dead loads (1) In calculating dead loads, the unit weights of the materials shall be based on reliable data. (2) When the position of permanent partitions is indicated on the plan of a building, the weights of those partitions shall be included in the dead loads. (Enacted 1990) Cap 123B reg 17 Imposed loads (1) The imposed load on any building, street, building works or street works shall be the greatest applied load likely to arise from the intended use or purpose of the building, street, building works or street works (including forces exerted by the adjacent ground), but subject to this regulation- (a) the minimum imposed load on a building or street shall be- (i) the distributed load specified in column 3 of Table 1 applied uniformly on plan; or (ii) the concentrated load specified in column 4 of Table 1 applied on plan over any square with a 300 mm side; or (iii) the total load specified in column 5 of Table 1 applied on beams uniformly distributed over the span, whichever shall produce the most adverse effect;(b) beams, ribs and joists spaced at not more than 1 m centres shall not be regarded as beams for the purposes of column 5 of Table 1; (c) where a building is to support partitions but the position of the partitions is not indicated on the plan of the building, the weight of such partitions shall be regarded as imposed distributed load applied uniformly on plan and shall, in addition to other imposed loads, be- (i) not less than 1/3 of the weight per metre length of the partitions uniformly distributed per square metre; and (ii) not less than 1 kPa if the floor is used for office purposes. TABLE 1 MINIMUM IMPOSED LOADS 1 2 3 4 5 Class No. Usage Distributed load to be applied uniformly on plan Concentrated load to be applied on plan over any square with a 300 mm side Total load to be applied on beams, uniformly distributed over span kPa kN kN 1 Floors for- dormitories; hospital wards, bedrooms, toilet rooms; hotel and motel private sitting rooms, bedrooms, toilet rooms 2.0 2.0 |
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