1、BRITISH STANDARD BS 4305-2: 1989 Baths for domestic purposes made of acrylic material Part 2: Specification for connecting dimensions UDC 696.144:678.744.32:678.067:643.52:696.117:693.814.2(083.3):006.3/.8BS4305-2:1989 This British Standard, having been prepared under the directionof the Building Se
2、rvices StandardsCommittee, was published under the authority of the Board of BSI and comes into effect on 31 January 1989 BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference SEB/3 Draft for comment 83/13965 DC ISBN 0 580 17176 0 Committees responsible fo
3、r this British Standard The preparation of this British Standard was entrusted by the Building Services Standards Committee (SEB/-) to Technical Committee SEB/3 upon which the following bodies were represented: British Bath Manufacturers Association British Plastics Federation Council of British Cer
4、amic Sanitaryware Manufacturers Department of the Environment (Property Services Agency) Institute of Plumbing Institution of Environmental Health Officers Institution of Water and Environmental Management National Association of Plumbing, Heating and Mechanical Services Plastic Bath Manufacturers A
5、ssociation Royal Institute of British Architects Vitreous Enamel Development Council Water Companies Association Amendments issued since publication Amd. No. Date of issue CommentsBS 4305-2:1989 BSI 06-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Connecting
6、dimensions 1 3 Tap holes 1 4 Waste hole 1 5 Overflow hole 1 6 Chain stay hole 1 Figure 1 Dimension references 2 Figure 2 Waste hole form and gauge 2 Table 1 Connecting dimensions 1 Publications referred to Inside back coverBS4305-2:1989 ii BSI 06-1999 Foreword This Part of BS 4305 has been prepared
7、under the direction of the Building Services Standards Committee. This Part together with Part 1 and BS 7015 supersedes BS 4305:1972 which is hereby withdrawn. It has been necessary to produce this Part of BS 4305 to deal, in the interim, with those clauses of BS 4305:1972 that are not yet standardi
8、zed within the European Committee for Standardization (CEN). As soon as the relevant CEN documents are published and adopted nationally this Part will be superseded and withdrawn. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards ar
9、e responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and 2, an inside back cover and a back cover. This standard
10、 has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4305-2:1989 BSI 06-1999 1 1 Scope This Part of BS 4305 specifies requirements for the connecting dimensions of baths for domestic purposes made o
11、f acrylic material. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Connecting dimensions The bath connecting dimensions illustrated in Figure 1 shall comply with the requirements in Table 1. Table 1 Connecting dimensions 3 Tap holes Baths shall
12、 be provided either with or without tap holes, but a bath with tap holes complying with the following requirements shall be provided unless otherwise ordered: Hole diameter 36 mm Distance between 180 mm hole centres NOTETap holes are normally positioned centrally but alternative positions can be pro
13、vided if ordered. 4 Waste hole The waste hole form shall be such that when a gauge complying with Figure 2 is inserted in the waste hole, the part of the gauge that is shown cross-hatched in Figure 2 does not protrude either above the top edge of the waste hole or below the bottom edge of the waste
14、hole. NOTEThis waste hole is suitable for type 11 and type 13 waste fittings of BS 3380. 5 Overflow hole Baths shall be provided either with or without overflows, but a bath without an overflow shall only be supplied if so ordered by the purchaser. 6 Chain stay hole When no overflow hole is provided
15、, a 7 mm diameter hole for the chain stay shall be provided, the centre of which shall be 60 mm maximum below the top of the flange. Dimension reference Description Value mm H a Bottom of waste to mid point of overflow 240 min. 400 max. H 1 a Top of flange to mid point of overflow 60 min. H 2 Bottom
16、 of waste tofloor 150 min. or adjustable to 150 D 1 a Overflow diameter 45 D 2 Waste diameter 52 D 4 Outside waste diameter (D 2+ 10) min. a a Mid point of overflow to mid point of outlet 105 min., 250 max. f a Mid point of overflow to end ofbath 80 min. g a Mid point of tap hole to end of bath 50 m
17、in. k a Diameter of flat areafor tap 50 min. a Only applicable if overflow hole and/or tap holes are provided.2 +3 7 +0 2 +0 2 +0 2 +0 BS4305-2:1989 2 BSI 06-1999 Figure 1 Dimension references NOTEThis figure is only diagrammatic and is not meant to indicate the detailed design of waste holes. Figur
18、e 2 Waste hole form and gaugeBS 4305-2:1989 BSI 06-1999 Publications referred to BS 3380, Specification for wastes (excluding skeleton sink wastes) and bath overflows. BS 4305, Baths for domestic purposes made of acrylic materials 1) . BS 4305-1, Specification for finished baths. BS 7015, Specificat
19、ion for cast acrylic sheet for baths and shower trays for domestic purposes 2) . 1) English language version of EN 198 2) English language version of EN 263BS4305-2: 1989 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for prep
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