{"id":375391,"date":"2024-10-20T02:43:23","date_gmt":"2024-10-20T02:43:23","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-92512021\/"},"modified":"2024-10-26T04:45:54","modified_gmt":"2024-10-26T04:45:54","slug":"bs-92512021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-92512021\/","title":{"rendered":"BS 9251:2021"},"content":{"rendered":"

This British Standard gives recommendations for the design, installation, components, water supplies and backflow protection, commissioning, maintenance and testing of fire sprinkler systems installed for life safety purposes in residential and domestic premises.<\/p>\n

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NOTE 1 Sprinkler systems also provide additional benefits for property protection and prevention of fire spread.<\/p>\n<\/blockquote>\n

This British Standard is applicable for sprinkler protection of domestic and residential premises and contains specific recommendations for sprinkler systems in those premises of more than four storeys or 18 m in height.<\/p>\n

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NOTE 2 Unless otherwise specified, references to residential sprinkler system in this British Standard include domestic sprinkler systems.<\/p>\n<\/blockquote>\n

The recommendations of this British Standard are also applicable to any addition, extension, repair or other modification to a residential sprinkler system.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\n0 Introduction
1 Scope <\/td>\n<\/tr>\n
10<\/td>\n2 Normative references <\/td>\n<\/tr>\n
11<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
12<\/td>\nFigure 1 \u2014 Height of top storey in building <\/td>\n<\/tr>\n
15<\/td>\n4 Preliminary work and consultation
4.1 Initial considerations
4.2 Consultation <\/td>\n<\/tr>\n
18<\/td>\n4.3 Category of system <\/td>\n<\/tr>\n
19<\/td>\nTable 1 \u2014 Category of system
5 Design
5.1 General <\/td>\n<\/tr>\n
20<\/td>\n5.2 System type
5.3 Design density and duration of supply <\/td>\n<\/tr>\n
21<\/td>\nTable 2 \u2014 Minimum design parameters <\/td>\n<\/tr>\n
22<\/td>\n5.4 Extent of sprinkler protection
5.5 Classification of residential and non-residential occupancies <\/td>\n<\/tr>\n
23<\/td>\nTable 3 \u2014 Examples of classification of areas and design criteria for areas protected with \u201cResidential\u201d BS EN 12259\u201114 sprinkler heads <\/td>\n<\/tr>\n
24<\/td>\n5.6 Ordinary hazard protected areas <\/td>\n<\/tr>\n
25<\/td>\nTable 4 \u2014 Examples of classification of areas and design criteria for areas to be protected with BS EN 12259\u20111 sprinkler heads
5.7 Sprinkler coverage and positioning <\/td>\n<\/tr>\n
27<\/td>\nFigure 2 \u2014 Two examples of shadow areas (plan views)
Figure 3 \u2014 Bay windows and similar features <\/td>\n<\/tr>\n
28<\/td>\n5.8 Ceiling pockets
5.9 Residential pattern sprinkler heads <\/td>\n<\/tr>\n
29<\/td>\n5.10 Hydraulic calculations
5.11 Water supplies <\/td>\n<\/tr>\n
32<\/td>\nFigure 4 \u2014 Stored water supply <\/td>\n<\/tr>\n
34<\/td>\nFigure 5 \u2014 Examples of water volumes for various shared water supplies <\/td>\n<\/tr>\n
35<\/td>\nFigure 6 \u2014 Typical shared pump and water supply with PDV <\/td>\n<\/tr>\n
36<\/td>\n5.12 Pumps <\/td>\n<\/tr>\n
37<\/td>\nFigure 7 \u2014 Typical power supply arrangement to sprinkler pump and ancillary equipment <\/td>\n<\/tr>\n
40<\/td>\nFigure 8 \u2014 Enhanced water supply <\/td>\n<\/tr>\n
41<\/td>\nFigure 9 \u2014 Examples of primary and secondary power supply configurations
5.13 Pipes and fittings <\/td>\n<\/tr>\n
42<\/td>\n5.14 Flexible sprinkler connection <\/td>\n<\/tr>\n
43<\/td>\n5.15 Valves
5.16 Pressure reducing valves <\/td>\n<\/tr>\n
44<\/td>\n5.17 Frost protection
5.18 Sprinkler system fire and fault alarm functionality <\/td>\n<\/tr>\n
46<\/td>\nTable 5 \u2014 Fault conditions to be monitored in category 2, 3 and 4 systems <\/td>\n<\/tr>\n
47<\/td>\n6 Installation, commissioning and documentation
6.1 Installation <\/td>\n<\/tr>\n
49<\/td>\n6.2 Commissioning <\/td>\n<\/tr>\n
50<\/td>\n6.3 Documentation <\/td>\n<\/tr>\n
51<\/td>\n6.4 Block plan
6.5 System data label
6.6 Location plate <\/td>\n<\/tr>\n
52<\/td>\nFigure 10 \u2014 Example of a location plate
7 Maintenance
7.1 Inspecting and testing routines <\/td>\n<\/tr>\n
53<\/td>\n7.2 Reinstatement of the system
7.3 Log book <\/td>\n<\/tr>\n
54<\/td>\nAnnex A (informative)\u2002 Elements of a typical residential sprinkler system
Figure A.1 \u2014 Elements of a typical mains\u2011fed sprinkler system <\/td>\n<\/tr>\n
55<\/td>\nFigure A.2 \u2014 Elements of a typical pump and tank sprinkler system <\/td>\n<\/tr>\n
56<\/td>\nFigure A.3 \u2014 Typical arrangement of a multi-storey building with shared water supply and shared riser <\/td>\n<\/tr>\n
57<\/td>\nFigure A.4 \u2014 Typical arrangement of a multi-storey building with shared water supply and dedicated sprinkler riser <\/td>\n<\/tr>\n
58<\/td>\nAnnex B (normative)\u2002 Hydraulic calculations <\/td>\n<\/tr>\n
59<\/td>\nTable B.1 \u2014 C values for various type of pipes
Table B.2 \u2014 K values for carbon steel tube conforming to BS EN 10255, Medium series
Table B.3 \u2014 K values for CPVC conforming to ASTM F442
Table B.4 \u2014 K values for copper tube conforming to BS EN 1057:2006+A1, half\u2011hard, R250 designation <\/td>\n<\/tr>\n
60<\/td>\nTable B.5 \u2014 Typical equivalent lengths for steel fittings and valves <\/td>\n<\/tr>\n
61<\/td>\nTable B.6 \u2014 Typical equivalent lengths for CPVC fittings and valves
Table B.7 \u2014 Typical equivalent lengths for copper fittings and valves <\/td>\n<\/tr>\n
62<\/td>\nFigure B.1 \u2014 Example of a square law graduation graph <\/td>\n<\/tr>\n
63<\/td>\nFigure B.2 \u2014 Blank template of a square law graduation graph <\/td>\n<\/tr>\n
64<\/td>\nFigure B.3 \u2014 Example sprinkler head layout scheme <\/td>\n<\/tr>\n
65<\/td>\nTable B.8 \u2014 Example data extracted from a typical sprinkler head manufacturers datasheet
Table B.9 \u2014 Re-calculated parameters for BS 9251 application providing a minimum of 2.1 mm\/min as required for BS 9251 category 1 <\/td>\n<\/tr>\n
66<\/td>\nTable B.10 \u2014 Worked example: actual coverage areas <\/td>\n<\/tr>\n
67<\/td>\nAnnex C (informative)\u2002 Example of system data label
Figure C.1 \u2014 System data label <\/td>\n<\/tr>\n
68<\/td>\nAnnex D (normative)\u2002 Pipework support
Table D.1 \u2014 Maximum spacing of fixings for copper and stainless steel pipework
Table D.2 \u2014 Maximum spacing of fixings for steel pipework
Table D.3 \u2014 Maximum spacing of fixings for CPVC pipework <\/td>\n<\/tr>\n
69<\/td>\nAnnex E (informative)\u2002 Hydraulic test <\/td>\n<\/tr>\n
70<\/td>\nFigure E.1 \u2014 Test rig for hydraulic test
Annex F (normative)\u2002 Long-term inspection and testing of pipework and sprinklers <\/td>\n<\/tr>\n
71<\/td>\nTable F.1 \u2014 Number of sprinklers to be removed and tested <\/td>\n<\/tr>\n
72<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Fire sprinkler systems for domestic and residential occupancies. Code of practice<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n74<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":375402,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[238,2641],"product_tag":[],"class_list":{"0":"post-375391","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-220-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/375391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/375402"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=375391"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=375391"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=375391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}