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Z248-17

Current
Current

The latest, up-to-date edition.

Code for tower cranes
Available format(s)

Hardcopy , PDF

Language(s)

French, English

Published date

01-01-2017

Preface
1 Scope
2 Reference publications
3 Definitions
4 Design and construction
5 Erection, dismantling, and climbing
6 Inspection, testing, and repairs
7 Maintenance and repair
8 Safe operation
Annex A (informative) - Hand signals
Annex B (informative) - Examples of tower crane types

Preface This is the third edition of CSA Z248, Code for tower cranes. It supersedes the previous editions published in 2004 and 1975. It applies to the design, construction, installation, inspection, testing, maintenance, and safe operation of tower cranes. This new edition of CSA Z248 includes updated requirements to the following: - design and construction; - crane supports; - erection dismantling, and climbing; - maintenance and repair; - safe operation and rescue plan; - out of service wind requirements; - electrical and brake redundancy; - foundation and climbing; and - wire rope. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 General This Standard applies to the design, characteristics, construction, installation, dismantling, operation, inspection, testing, and maintenance of tower cranes. This Standard applies to tower cranes powered by electric motors or internal combustion engines and any variations thereof that retain the same fundamental characteristics. The scope includes cranes of these types that adjust operating radius by means of a a) boom-luffing mechanism; b) trolley traversing a horizontal boom; or c) a combination of the two. This Standard is also intended to cover self-erecting tower cranes. Tower cranes can be mounted on fixed or travelling bases. Additional mounting means can include arrangements that permit the crane to climb in the structure being built or that permit increasing the tower height as the structure rises. 1.2 Purpose This Standard is designed to a) guard against and minimize injury to workers, and otherwise provide for the protection of life, limb, and property by prescribing safety requirements; b) provide direction to owners, employers, supervisors, crane erectors, operators, and others concerned with, or responsible for, its application; and c) guide governments and other regulatory bodies in the development, promulgation, and enforcement of appropriate safety directives. It is also expected that this Standard will have a major application in industry, serving as a guide to manufacturers, purchasers, and users of the equipment. 1.3 Application This Standard applies to new and existing tower cranes unless otherwise specified in this Standard. 1.4 Terminology In this Standard, \"shall\" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; \"should\" is used to express a recommendation or that which is advised but not required; and \"may\" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. 1.5 Units of measurement The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.

Preface This is the third edition of CSA Z248, Code for tower cranes. It supersedes the previous editions published in 2004 and 1975. It applies to the design, construction, installation, inspection, testing, maintenance, and safe operation of tower cranes. This new edition of CSA Z248 includes updated requirements to the following: - design and construction; - crane supports; - erection dismantling, and climbing; - maintenance and repair; - safe operation and rescue plan; - out of service wind requirements; - electrical and brake redundancy; - foundation and climbing; and - wire rope. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 General This Standard applies to the design, characteristics, construction, installation, dismantling, operation, inspection, testing, and maintenance of tower cranes. This Standard applies to tower cranes powered by electric motors or internal combustion engines and any variations thereof that retain the same fundamental characteristics. The scope includes cranes of these types that adjust operating radius by means of a a) boom-luffing mechanism; b) trolley traversing a horizontal boom; or c) a combination of the two. This Standard is also intended to cover self-erecting tower cranes. Tower cranes can be mounted on fixed or travelling bases. Additional mounting means can include arrangements that permit the crane to climb in the structure being built or that permit increasing the tower height as the structure rises. 1.2 Purpose This Standard is designed to a) guard against and minimize injury to workers, and otherwise provide for the protection of life, limb, and property by prescribing safety requirements; b) provide direction to owners, employers, supervisors, crane erectors, operators, and others concerned with, or responsible for, its application; and c) guide governments and other regulatory bodies in the development, promulgation, and enforcement of appropriate safety directives. It is also expected that this Standard will have a major application in industry, serving as a guide to manufacturers, purchasers, and users of the equipment. 1.3 Application This Standard applies to new and existing tower cranes unless otherwise specified in this Standard. 1.4 Terminology In this Standard, \"shall\" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; \"should\" is used to express a recommendation or that which is advised but not required; and \"may\" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. 1.5 Units of measurement The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.

DocumentType
Standard
ISBN
978-1-4883-1155-0
Pages
88
PublisherName
Canadian Standards Association
Status
Current
Supersedes

W59-13 Welded steel construction (metal arc welding)
C22.1-15 Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations
EN 13411-5:2003+A1:2008 Terminations for steel wire ropes - Safety - Part 5: U-bolt wire rope grips
EN 14502-2:2005+A1:2008 Cranes - Equipment for the lifting of persons - Part 2: Elevating control stations
CSA S16 : 2014 DESIGN OF STEEL STRUCTURES
EN 13411-3:2004+A1:2008 Terminations for steel wire ropes - Safety - Part 3: Ferrules and ferrule-securing
ANSI/SAE Z26.1:1996 SAFETY GLAZING MATERIALS FOR GLAZING MOTOR VEHICLES AND MOTOR VEHICLE EQUIPMENT OPERATING ON LAND HIGHWAYS - SAFETY STANDARD
EN 14439:2006+A2:2009 Cranes - Safety - Tower cranes
A23.3-14 Design of concrete structures
ISO 4309:2010 Cranes Wire ropes Care and maintenance, inspection and discard
W178.2-14 Certification of welding inspectors
EN 13411-4:2011 Terminations for steel wire ropes - Safety - Part 4: Metal and resin socketing
EN 13411-6:2004+A1:2008 Terminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket
ISO 7296-2:1996 Cranes Graphical symbols Part 2: Mobile cranes
ISO 7296-3:2006 Cranes Graphical symbols Part 3: Tower cranes
CGSB 48.9712 : 2014 NON-DESTRUCTIVE TESTING - QUALIFICATION AND CERTIFICATION OF PERSONNEL
AWS D1.1/D1.1M : 2015 STRUCTURAL WELDING CODE-STEEL
CSA C22.2 No. 14 : 2013 INDUSTRIAL CONTROL EQUIPMENT
ISO 8566-3:2010 Cranes Cabins and control stations Part 3: Tower cranes
ISO 13849-1:2015 Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design
EN 13411-8:2011 Terminations for steel wire ropes - Safety - Part 8: Swage terminals and swaging
ANSI A14.3 : 2008(R2018) FIXED - SAFETY REQUIREMENTS

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