{"id":361668,"date":"2024-10-20T01:37:02","date_gmt":"2024-10-20T01:37:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-210512020\/"},"modified":"2024-10-26T02:30:42","modified_gmt":"2024-10-26T02:30:42","slug":"bs-iso-210512020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-210512020\/","title":{"rendered":"BS ISO 21051:2020"},"content":{"rendered":"

This document specifies the recommended practices and requirements for the installation of buried and above-ground ductile iron pipeline system conforming to ISO 2531<\/span><\/span>, ISO 7186<\/span><\/span> and ISO 16631<\/span><\/span>.<\/p>\n

The recommended practices in this document are intended to provide the practical advices based on the best methods of construction and installation of ductile iron pipeline system including pipes, fittings, valves and accessories.<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Occupational safety and health requirements
5 Materials in contact with water intended for human consumption <\/td>\n<\/tr>\n
11<\/td>\n6 Input control, transport, handling and storage of pipeline components and inspection
6.1 Input control
6.2 Transport, handling and storage and inspection of pipeline components
6.2.1 Transport
6.2.2 Handling <\/td>\n<\/tr>\n
13<\/td>\n6.2.3 Storage <\/td>\n<\/tr>\n
17<\/td>\n6.2.4 Inspection
7 Coating and lining repairs
7.1 General
7.2 Repair external coating
7.2.1 General
7.2.2 Repair procedure <\/td>\n<\/tr>\n
18<\/td>\n7.3 Repair cement mortar lining
7.3.1 General
7.3.2 Repair procedure cement mortar lining
8 Cutting of pipes and ovality correction
8.1 Cutting of pipes
8.1.1 General <\/td>\n<\/tr>\n
19<\/td>\n8.1.2 Pipe cutting tools
8.1.3 Chamfering of cut edge
8.1.4 Repair of damaged lining and coating
8.2 Ovality correction <\/td>\n<\/tr>\n
22<\/td>\n9 Site preparation and pipe trenches
9.1 Trench width
9.2 Trench excavation and minimum depth of cover
9.2.1 General
9.2.2 Minimum depth of cover
9.2.3 Regulations <\/td>\n<\/tr>\n
23<\/td>\n10 Pipeline protection
10.1 General
10.2 Site applied polyethyelene sleeving
11 Laying of pipes
11.1 Precautions at site before laying
11.1.1 General
11.1.2 Preparation before pipe laying and jointing <\/td>\n<\/tr>\n
24<\/td>\n11.2 Construction of pipe trenches
11.2.1 General
11.2.2 Bedding <\/td>\n<\/tr>\n
25<\/td>\n11.2.3 Trench types <\/td>\n<\/tr>\n
27<\/td>\n11.2.4 Soil types <\/td>\n<\/tr>\n
28<\/td>\n11.3 Safety, protection of property and structures
12 Push-in joints, jointing and anchoring
12.1 Preparations before jointing
12.2 Push-in joints
12.2.1 General <\/td>\n<\/tr>\n
29<\/td>\n12.2.2 Push-in joint assembly for the pipes <\/td>\n<\/tr>\n
35<\/td>\n12.2.3 Jointing of push-on fittings
12.2.4 Jointing of fittings by jointing tackle (assembler) <\/td>\n<\/tr>\n
36<\/td>\n12.2.5 Jointing of fittings by winch method
12.2.6 Maximum joint deflection and laying length <\/td>\n<\/tr>\n
37<\/td>\n12.2.7 Inspection of the joint <\/td>\n<\/tr>\n
38<\/td>\n12.2.8 Dismantling of Joint
12.3 Mechanical joints
12.3.1 General <\/td>\n<\/tr>\n
39<\/td>\n12.3.2 Mechanical joint assembly for pipes <\/td>\n<\/tr>\n
41<\/td>\n12.4 Flanged Joints
12.4.1 General
12.4.2 Flange bolting tightening sequence <\/td>\n<\/tr>\n
42<\/td>\n12.4.3 Maximum bolt tightening torque <\/td>\n<\/tr>\n
43<\/td>\n13 Functional features and installation of valves
13.1 Installation of valves
13.1.1 General
13.1.2 Air valves <\/td>\n<\/tr>\n
44<\/td>\n13.1.3 Scour valves or drain valves
13.1.4 Isolation valves <\/td>\n<\/tr>\n
45<\/td>\n13.1.5 Hydrants
13.1.6 Surge limiting equipment
14 Restrained joints and thrust blocks
15 Cleaning, hydraulic testing and commissioning of pipeline and pipeline components
15.1 Cleaning <\/td>\n<\/tr>\n
46<\/td>\n15.2 Hydraulic testing
16 Flushing and disinfection
17 Service connections
17.1 General <\/td>\n<\/tr>\n
47<\/td>\n17.2 Conventional type service connection
17.3 External seal type connection <\/td>\n<\/tr>\n
48<\/td>\n17.4 Saddle for ductile iron pipes for distribution network <\/td>\n<\/tr>\n
49<\/td>\n18 Supporting pipes
18.1 General
18.2 Support for above ground installation
18.3 Maximum span for river crossing <\/td>\n<\/tr>\n
50<\/td>\n18.4 Laying of ductile iron (DI) pipes in hilly terrain
18.4.1 General
18.4.2 Pipe line anchoring on slope <\/td>\n<\/tr>\n
52<\/td>\n18.4.3 Basic precaution during trenching and bed preparation for pipes on slope <\/td>\n<\/tr>\n
53<\/td>\n18.4.4 Additional precautions during laying in a hilly and rocky terrain <\/td>\n<\/tr>\n
54<\/td>\n18.4.5 Precaution in snow bound areas <\/td>\n<\/tr>\n
55<\/td>\n19 Railroad and highway crossings <\/td>\n<\/tr>\n
56<\/td>\nAnnex A (normative) Site applied polyethylene sleeving <\/td>\n<\/tr>\n
65<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Construction and installation of ductile iron pipeline system<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":361677,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[347,2641],"product_tag":[],"class_list":{"0":"post-361668","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-23-040-10","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\/361668","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\/361677"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=361668"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=361668"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=361668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}