Draft Details
- Safety code on mobile cranes (New Edition)
- Draft Standard
- Legal Notice for Draft Standards
- Z150 :2026
- SDG Foreword
- Preface
- CSA Z150:20
- + 1 Scope
- 1.1 Overview
- 1.2 Inclusions
- 1.3 Application
- 1.4 Applicability to hoisting machines
- 1.5 Lifting service requirements
- 1.6 Exclusions
- 1.7 Units of Measure
- 1.8 Terminology
- 2 Reference publications
- 3 Definitions
- + 4 Construction and characteristics of mobile cr...
- + 4.1 Load ratings
- + 4.1.1 Ratings governed by crane stability
- 4.1.1.1 Stability considerations
- 4.1.1.2 Load ratings governed by stability
- 4.1.1.3 Load rating stipulations
- 4.1.1.4 Factors affecting load capacity and sta...
- + 4.1.2 Ratings governed by structural competence...
- 4.1.2.1 Operating range considerations
- 4.1.2.2 Design requirements for lattice boom cr...
- 4.1.2.3 Telescopic boom crane design requiremen...
- + 4.1.3 Load rating information
- 4.1.3.1 Load rating chart
- + 4.1.3.2 Operational aids
- 4.1.3.2.1 General
- 4.1.3.2.2 Load-indicating devices, rated capaci...
- 4.1.3.2.3 Override or bypass system
- 4.1.3.2.4 Use of attachments
- 4.1.3.3 Additional load rating information
- 4.1.3.4 Additional information for telescoping ...
- + 4.2 Backward stability
- 4.2.1 Overview
- 4.2.2 General conditions
- 4.2.3 Acceptable stability conditions
- 4.2.4 Limitation on boom length or boom angle
- + 4.3 Boom-hoist, load-hoist, and telescopic boom...
- + 4.3.1 Boom-hoist mechanism
- 4.3.1.1 Boom-hoist reeving and control requirem...
- 4.3.1.2 Boom-hoisting mechanism requirements fo...
- 4.3.1.3
- 4.3.1.4 Boom and luffing jib safety mechanisms
- 4.3.1.5 Hydraulic cylinder safety requirements
- 4.3.1.6 Boom-hoist drum requirements
- + 4.3.2 Load-hoist mechanism
- 4.3.2.1 Load hoist drum and winch assemblies
- 4.3.2.2 Adjustment for brakes and clutches
- 4.3.2.3 Load-hoist drum requirements
- 4.3.2.4 Requirements for load hoist drum holdin...
- 4.3.2.5 Drum rotation indicators
- 4.3.2.6 Sheave and rope ratio requirements
- + 4.3.3 Load-hoist brakes
- 4.3.3.1 Power-operated brake safety requirement...
- 4.3.3.2 Foot-operated brake pedal requirements
- 4.3.3.3 Power-controlled lowering system
- 4.3.4 Adjustments
- 4.3.5 Anti-two-block device
- + 4.3.6 Telescoping boom
- 4.3.6.1 Extension and retraction of boom sectio...
- 4.3.6.2 Boom length determination from operator...
- 4.3.6.3 Powered retract-and-extend function
- 4.3.6.4 Hydraulic system failure prevention
- + 4.4 Swing mechanism
- 4.4.1 Swing control
- + 4.4.2 Swing brake and locking device
- 4.4.2.1 Brake holding requirements
- 4.4.2.2 Rotating superstructure locking mechani...
- + 4.5 Crane travel
- 4.5.1 Travel controls
- 4.5.2 Travel mechanism
- + 4.5.3 Travel brakes and locks
- 4.5.3.1 Braking and locking requirements
- 4.5.3.2 Requirements for carrier-mounted cranes...
- 4.5.3.3 Requirements for locomotive cranes
- + 4.6 Controls
- 4.6.1 Control accessibility and layout
- 4.6.2 Control function identification
- 4.6.3 Control installation and directional mark...
- 4.6.4 Controls for load hoist and boom hoist
- 4.6.5 Remote-operated crane motion control
- 4.6.6 Protection against radio frequency interf...
- 4.6.7 Emergency stop for remote-operated cranes...
- + 4.7 Ropes and reeving accessories
- + 4.7.1 Rope design factors
- 4.7.1.1 Applicability
- 4.7.1.2 Design factor requirements
- 4.7.1.3 Design factors for supporting boom
- 4.7.1.4 Design factors for static rope loads
- + 4.7.2 Wire ropes
- 4.7.2.1 Hoisting and rigging rope specification...
- 4.7.2.2 Rotation-resistant rope limitations
- 4.7.2.3 Use of rotation-resistant rope
- 4.7.2.4 Fibre core rope restrictions
- 4.7.2.5 Load support and tension equalization
- 4.7.2.6 Consultation for high temperature expos...
- + 4.7.3 Wire rope fittings and terminations
- 4.7.3.1 Wire rope fittings
- 4.7.3.2 Loop back eye splices
- 4.7.3.3 Flemish eye splices
- 4.7.3.4 Hand-spliced end terminations
- 4.7.3.5 Wire rope clips
- 4.7.3.6 Fittings
- 4.7.3.7 Proof testing of wire rope terminations...
- 4.7.3.8 Installation and use of wire-rope clips...
- 4.7.3.9 Use of active in-line swivels
- 4.7.3.10 Material test report requirements for ...
- 4.7.4 Synthetic rope
- + 4.7.5 Sheaves
- 4.7.5.1 Sheave groove requirements
- 4.7.5.2 Rope retention in sheave grooves
- 4.7.5.3 Prohibition of aluminum sheaves with st...
- 4.7.5.4 Sheave bearing lubrication
- + 4.7.6 Sheave sizes
- 4.7.6.1 Boom-hoisting sheave requirements
- 4.7.6.2 Load-hoisting sheave dimensions
- 4.7.6.3 Load-block sheave requirements
- + 4.7.7 Load hooks and hook blocks
- 4.7.7.1 Hooks and hook blocks
- 4.7.7.2 Hook identification and weight labeling...
- 4.7.7.3 Load hook requirements
- + 4.8 Cabs
- + 4.8.1 Construction
- 4.8.1.1 Cabs and enclosures construction requir...
- 4.8.1.2 Windows and visibility requirements
- 4.8.1.3 Cab door restraints and operation
- 4.8.1.4 Cab lighting requirements
- 4.8.1.5 Operator noise level limits
- 4.8.1.6 Passageway to operator's exit
- 4.8.1.7 Seatbelt requirements for single-contro...
- 4.8.1.8 Operator seat requirements
- 4.8.1.9 Slip-resistant walking surfaces
- 4.8.2 Platforms for cab
- 4.8.3 Access to cab
- 4.8.4 Emergency exit
- 4.8.5 Cab roof
- 4.8.6 Cab accessories
- + 4.9 General requirements
- + 4.9.1 Booms
- 4.9.1.1 Slip-resistant walking surfaces
- 4.9.1.2 Jib restraint against backward overturn...
- 4.9.1.3 Boom-angle indicator
- 4.9.1.4 Boom hoist automatic stop mechanism
- 4.9.1.5 Identification and use of booms and jib...
- 4.9.2 Exhaust gases
- + 4.9.3 Outriggers
- 4.9.3.1 Outrigger retraction and extension secu...
- 4.9.3.2 Power-actuated jacks and load support
- 4.9.3.3 Outrigger visibility during operation
- 4.9.3.4 Fastening outrigger floats
- 4.9.3.5 Outrigger beam positioning and marking
- 4.9.3.6 Outrigger position integration with loa...
- 4.9.4 Welded construction
- + 4.9.5 Guards for moving parts
- 4.9.5.1 Guarding of moving parts
- 4.9.5.2 Guard fastening requirements
- 4.9.5.3 Indication of non-supporting guards
- 4.9.5.4 Design of guards for inspection and mai...
- 4.9.6 Clutch and brake protection
- 4.9.7 Hydraulic line protection
- 4.9.8 Lubricating points
- + 4.9.9 Miscellaneous equipment
- 4.9.9.1 Fuel tank safety for gasoline
- 4.9.9.2 Receptacle for tools and lubricating eq...
- 4.9.9.3 Audible warning and operating signal de...
- 4.9.9.4 Levelling indicators and methods
- 4.9.9.5 Labeling distance to centre of rotation...
- + 4.9.10 Locomotive crane equipment
- 4.9.10.1 Locomotive crane load transmission req...
- 4.9.10.2 Truck centre pin connection for crane ...
- + 4.10 Hydraulic and pneumatic systems
- 4.10.1 Hydraulic and pneumatic component requir...
- 4.10.2 Pressure indication and measurement
- 4.10.3 Pressure relief valve requirements
- 4.11 Manufacturer’s manual
- + 4.12 Testing
- 4.12.1 Functions test
- + 4.12.2 Load test for new and integrated cranes
- 4.12.2.1 Load testing of new cranes
- 4.12.2.2 Load testing of remanufactured or repa...
- 4.13 Rerating
- + 4.14 Cranes used for other than lifting service...
- 4.14.1 Non-lifting service requirements
- 4.14.2 Documentation and maintenance requiremen...
- + 5 Inspection, testing, and maintenance
- + 5.1 General
- 5.1.1 Inspection testing and maintenance of cra...
- 5.1.3 Inspection testing and maintenance by com...
- + 5.2 Crane log
- + 5.2.1 Preparation and disposition
- 5.2.1.1 Crane log requirements
- 5.2.1.2 Crane log as crane equipment
- 5.2.1.3 Crane log availability
- + 5.2.2 Format
- 5.2.2.1 Log design and sequence
- 5.2.2.2 Inspection and maintenance records
- 5.2.2.3 Log entry requirements
- 5.2.2.4 Incident recording and repair documenta...
- 5.2.2.5 Boom section details
- + 5.3 Inspection
- 5.3.1 General
- + 5.3.2 Inspection classification
- 5.3.2.1 Inspection prior to initial use
- 5.3.2.2 Regular inspection
- + 5.3.2.3 Special inspection
- 5.3.2.3.1 Special inspections following crane i...
- 5.3.2.3.2 Non-destructive testing and inspectio...
- + 5.3.3 Daily inspection
- 5.3.3.1 Daily inspection of crane safety compon...
- 5.3.3.2 Deficiency assessment and hazard mitiga...
- 5.3.3.3 Hooks inspection and removal criteria
- + 5.3.4 Periodic inspection
- 5.3.4.1 Periodic inspection requirements
- 5.3.4.2 Deficiency examination and hazard mitig...
- 5.3.4.3 Loose turntable bolts
- + 5.3.5 Annual inspection
- 5.3.5.1 General Requirements
- + 5.3.5.2 Mechanical and operational inspection
- 5.3.5.2.1 Requirements
- 5.3.5.2.2 Mechanical and operational inspection...
- 5.3.5.2.3 Inspection of assembled block and hoo...
- + 5.3.5.3 Structural inspection
- 5.3.5.3.1 Personnel requirements
- 5.3.5.3.2 Inspection of critical and suspect ar...
- 5.3.5.3.3 Components to be inspected
- 5.3.5.3.4 Load block inspection
- 5.3.5.3.5 Structural report
- 5.3.5.4 Annual report
- + 5.3.6 Cranes not in regular use
- 5.3.6.1 Idle for a period of less than six mont...
- 5.3.6.2 Idle for a period of over six months
- + 5.4 Maintenance
- + 5.4.1 Preventive maintenance
- 5.4.1.1 Crane maintenance and preventive progra...
- 5.4.1.2 Replacement parts requirements
- 5.4.2 Maintenance procedure
- + 5.4.3 Adjustments and repairs
- 5.4.3.1 Correction of unsafe conditions
- 5.4.3.2 Maintaining adjustments for component f...
- 5.4.3.3 Repairs and replacements
- 5.4.3.4 Removal and inspection after mishap
- 5.4.3.5 Verification of repairs and alterations...
- 5.4.3.6 Verification and documentation of repla...
- 5.4.3.7 Functional testing of cranes after alte...
- + 5.4.4 Lubrication
- 5.4.4.1 Lubrication of moving parts
- 5.4.4.2 Lubricating systems maintenance
- 5.4.4.3 Lubrication during operation
- + 5.5 Rope and rope sheaves
- 5.5.1 General
- + 5.5.2 Daily inspection
- 5.5.2.1 Daily rope condition observation
- 5.5.2.2 Inspection of rapid deterioration point...
- 5.5.2.3 Wire rope and synthetic rope evaluation...
- 5.5.2.4 Recording daily inspection results
- + 5.5.3 Periodic and annual inspection
- 5.5.3.1 Periodic inspection frequency
- 5.5.3.2 Periodic rope inspections
- 5.5.3.3 Annual inspections by competent person
- 5.5.3.4 Rapid deterioration
- 5.5.3.5 Inspecting for damage
- 5.5.3.6 Inspection of ropes not in regular use
- 5.5.3.7 Rope damage evaluation and removal
- 5.5.3.8 Dated report of rope condition
- + 5.5.4 Rope replacement
- 5.5.4.1 Rope replacement guidelines
- 5.5.4.2 Rope replacement criteria
- 5.5.4.3 Replacement rope and connection require...
- + 5.5.5 Rope maintenance
- 5.5.5.1 Storage
- 5.5.5.2 Unreeling/uncoiling
- 5.5.5.3 Rope cutting
- 5.5.5.4 Rope handling during installation
- 5.5.5.5 Wire rope maintenance
- 5.5.5.6 Extending rope life through section rem...
- 5.5.5.7 Wire rope damage and repair
- + 5.5.6 Rope sheaves
- + 5.5.6.1 Inspection
- 5.5.6.1.1 Requirements
- 5.5.6.1.2 Sheave grooves
- 5.5.6.1.3 Compatability
- 5.5.6.1.4 Sheave flanges
- 5.5.6.1.5 Sheave bearings
- 5.5.6.2 Sheave maintenance
- 5.5.6.3 Sheave replacement
- + 6 Operation
- + 6.1 General
- 6.1.1 Operator qualification
- 6.1.2 Prior to use
- 6.1.3 Supporting ground, foundation, or structu...
- + 6.1.4 Positioning of the crane
- 6.1.4.1 Public safety in crane operating areas
- 6.1.4.2 Overhead protection design and approval...
- 6.1.4.3 Crane positioning and overlap managemen...
- + 6.1.5 Assembly/disassembly procedure
- 6.1.5.1 Manufacturer’s instructions
- 6.1.5.2 Operating manual
- 6.1.5.3 Cranes equipped with swing away jibs
- 6.1.5.4 Lattice booms
- 6.1.5.5 Bolts and pins
- 6.1.5.6 Outriggers
- 6.1.5.7 Levelling
- + 6.1.5.8 Assembly and disassembly competence
- 6.1.5.8.1 Assembly and disassembly process
- 6.1.5.8.2 Review of assembly and disassembly pr...
- + 6.1.5.9 Crew members
- 6.1.5.9.1 Pre-assembly and disassembly safety b...
- 6.1.5.9.2 Assembly and disassembly task transit...
- + 6.1.5.10 Locations out of view of operator
- 6.1.5.10.1 Operator communication before enteri...
- 6.1.5.10.2 Safe position communication for crew...
- 6.1.5.11 Power lines
- + 6.1.6 Assembly and dismantling of lattice booms...
- + 6.1.6.1 Boom supports and attachments
- 6.1.6.1.1 Boom assembly and disassembly safety
- 6.1.6.1.2 Blocking requirements
- 6.1.6.2 Assist crane
- 6.1.6.3 Competent person
- 6.1.6.4 Removal of boom section
- 6.1.6.5 Inspection to ensure compliance
- 6.2 Unsafe equipment
- + 6.3 Weather conditions
- 6.3.1 Weather conditions for safe operation
- 6.3.2 Cold weather conditions
- 6.3.3 High winds
- 6.3.4 Visibility
- 6.3.5 Preventing shock loading and impacts
- 6.3.6 Electrical storms
- + 6.4 Operating practices
- + 6.4.1 General practices
- 6.4.1.1 Safe operation and load limits
- 6.4.1.2 Crane stability on uneven surfaces
- 6.4.1.3 Ballast or Counterweights
- 6.4.1.4 Restrictions on boarding and riding equ...
- 6.4.1.5 Obstruction proximity and access preven...
- 6.4.1.6 Crane operation safety restrictions
- 6.4.1.7 Refuelling safety requirements
- 6.4.1.8 Operation of internal combustion engine...
- 6.4.1.9 Operator responsibilities and precautio...
- 6.4.1.10 Power failure during operation
- 6.4.1.11 Use of secondary hoist line
- + 6.4.2 Unattended cranes
- 6.4.2.1 Requirements for leaving crane unattend...
- 6.4.2.2 Securing crane against wind
- 6.4.3 Handling loads
- 6.4.4 Operational aids
- 6.4.5 Multiple crane lifts
- 6.4.6 Travelling a crane
- 6.4.7 Negotiating slopes
- + 6.4.8 Personnel lifting
- 6.4.8.1 General
- + 6.4.8.2 Platform requirements
- 6.4.8.2.1 General
- 6.4.8.2.2 Additional requirements for suspended...
- 6.4.8.2.3 Additional requirements for pinned pl...
- 6.4.8.2.4 Requirements for pinned platforms equ...
- + 6.4.8.3 Crane requirements
- 6.4.8.3.1 General
- 6.4.8.3.2 Additional crane requirements for sus...
- 6.4.8.3.3 Additional crane requirements for pin...
- 6.4.8.3.4 Additional crane requirements for pin...
- 6.4.8.4 Fall arrest system requirements
- + 6.4.8.5 Set-up and operation
- 6.4.8.5.1 General
- 6.4.8.5.2 Proof testing at job site
- 6.4.8.5.3 Trial lift
- 6.4.8.5.4 Additional requirement for operation ...
- + 6.4.8.6 Inspection, testing, and maintenance
- 6.4.8.6.1 General
- + 6.4.8.6.2 Inspection
- 6.4.8.6.2.1 Inspection and maintenance requirem...
- 6.4.8.6.2.2 Inspection prior to initial use
- 6.4.8.6.2.3 Daily inspection
- 6.4.8.6.2.4 Annual inspection
- 6.4.8.6.2.5 Records
- 6.4.8.6.3 Maintenance
- 6.4.8.6.4 Proof Testing after modification or r...
- + 6.4.9 Operating near electrical power lines
- 6.4.9.1 Minimum safe approach distance (MSAD)
- 6.4.9.2 Exceptions
- 6.4.9.3 Crane operation near power lines
- 6.4.9.4 Responsibilities of the site supervisor...
- 6.4.9.5 Actions in case of contact with energiz...
- 6.4.9.6 Working near overhead lines with long s...
- 6.4.9.7 Limitations of protective devices and c...
- + 6.5 Signalling
- 6.5.1 General
- 6.5.2 Standard signals
- 6.5.3 Signal person qualifications
- 6.5.4 Standard hand signals
- 6.5.5 Standard voice signals
- 6.5.6 Audible travel signals
- 6.5.7 Special signals
- 6.5.8 Audible emergency signal
- + 6.6 Cranes and components in transit
- 6.6.1 Loading and off-loading cranes from trans...
- 6.6.2 Securing crane to transport vehicle
- 6.6.3 Stowage of boom sections
- 6.6.4 Boom support and stowage during transport...
- 6.6.5 Boom support usage
- 6.6.6 Clearance for boom movement in transit
- 6.6.7 Securing the superstructure against rotat...
- 6.6.8 Hook restraint
- + 6.7 Locomotive cranes
- 6.7.1 Rail clamps
- 6.7.2 Rerailing locomotive cranes
- 6.7.3 Swinging locomotive cranes
- Table 1
- Table 2
- Table 3
- Table 4
- Table 5
- Figure 1
- Figure 2
- Figure 3
- + Annex A (informative)
- Mobile crane types
- Figure A.1
- Figure A.2
- Figure A.3
- Figure A.4
- Figure A.5
- Figure A.6
- Figure A.7
- Figure A.8
- Figure A.9
- Figure A.10
- Figure A.11
- + Annex B (informative)
- Crane parts
- Figure B.1
- Figure B.2
- Figure B.3
- + Annex C (informative)
- Work areas
- Figure C.1
- Figure C.2
- Figure C.3
- Figure C.4
- Figure C.5
- Figure C.6
- Figure C.7
- Figure C.8
- + Annex D (informative)
- D.1 General
- D.2 Backward stability
- Figure D.1
- Figure D.2
- Figure D.3
- Figure D.4
- Figure D.5
- Figure D.6
- Figure D.7
- + Annex E (informative)
- E.1 Method using a small piece clipped to the d...
- E.2 Extended wedge method
- E.3 Dual-saddle-clip or double-saddle-clip meth...
- E.4 Torque set extended wedge method
- E.5 Warning
- Figure E.1
- Figure E.2
- Figure E.3
- Figure E.4
- + Annex F (informative)
- Figure F.2
- Figure F.3
- + Annex G (informative)
- G.1 Management
- + G.2 Operators
- G.2.1 Proof of Qualification
- G.2.2 Operation and proof of qualification
- G.2.3 Competency and capability
- + Annex H (informative)
- Figure H.1
- Figure H.2
- Annex I (normative)
Designation:CSA Z150
Source:CSA
Contact:[email protected]
Contact name:Kyla Brown
Review start date:Sep 3, 2025
Review end date:Nov 2, 2025
Categories:Occupational Health and Safety
Contact email:angelique.coyle(at)csagroup.org
Draft Scope/Description:
1.1 Overview
This Standard describes the design, construction, load rating, installation, erection, inspection, maintenance, repair, modification, test, and operation of lattice and telescopic boom mobile, and ring mounted cranes.
Note: See Annex A for illustrations of mobile cranes and Annex B for illustrations of parts of a mobile crane.
1.2 Inclusions
This Standard applies only to machines that have all of the following fundamental characteristics:
a) the crane comprises of, or is mounted on;
i) a non- or self-propelled, crawler- or wheel-mounted mobile base;
ii) a temporary ring support frame or rail structure.
b) the crane is designed and manufactured for the primary purpose of hoisting and lowering loads by means of tackle suspended from a boom;
c) the boom is lattice or telescopic and capable of being elevated and lowered in the vertical plane and of being rotated (swung) from side to side in the horizontal plane;
d) the tackle is suspended from the boom and is capable of being increased and diminished in length; and
e) the crane utilizes an engine(s) or motor(s) of sufficient power to
i) elevate and lower the boom in the vertical plane with the load suspended from the tackle;
ii) rotate (swing) the boom in the horizontal plane with the load suspended from the tackle;
iii) increase and diminish the length of the tackle with the load suspended from the tackle; and
iv) in the case of a self-propelled crane, propel the vehicle, carrier, or base on which or to which the boom and hoist mechanism is attached.
1.3 Application
This Standard applies to crawler-mounted cranes, commercial truck-mounted cranes, boom trucks, wheel-carrier-mounted cranes, railway cranes, locomotive-mounted cranes, and rail-mounted cranes and ring mounted cranes, as well as any variations thereof that retain the fundamental characteristics of these cranes.
1.4 Applicability to hoisting machines
This Standard is applicable only to machines when they are used for lifting (hoisting).
Note: Some basic machine types within this scope are used alternatively for hoisting service and for applications not considered to be hoisting service. All of the requirements of this Standard are applicable to such machines when used for hoisting service. Clause 4.14 contains requirements for machines when used in other than hoisting service.
1.5 Lifting service requirements
Machines within the scope of Clause 1.3, and equipped with hooks, magnets, grapples, clam shell buckets, orange peel buckets, and other devices intended to connect or attach the tackle to the load for the purpose of hoisting or lowering a freely suspended load, are considered to be in lifting (hoisting) service.
1.6 Exclusions
This Standard does not apply to
a) machines within the scope that have been converted or adapted for uses not considered to be lifting (hoisting) services. These conversions and applications include power shovels, excavators, draglines, concrete pumps (see CAN/CSA-Z151), conveyors, augers, drills, and amusement rides (e.g., bungee jumping);
b) articulating boom (knuckle boom) cranes (see CAN/CSA-Z150.3);
c) hydraulic and cable-operated excavating equipment (e.g., power shovels and backhoes);
d) automotive wreckers and tow trucks designed to clear wrecks and haul vehicles;
e) side boom tractors, as used in pipeline work (see ASME B30.14);
f) mobile lifting devices designed specifically for use in power line and electric utility service, such as digger derricks (radial boom derricks) intended to auger holes for and to set power and telephone poles (see ANSI/ASSE A10.31);
g) vehicle-mounted aerial devices (see CAN/CSA-C225);
h) trolley boom cranes (under running trolley hoist);
i) truck-mounted overhead, gantry, and bridge cranes;
j) stacker cranes;
k) self-propelled elevating work platforms (see CAN/CSA-B354.6, CAN/CSA-B354.7, and CAN/CSA-B354.8);
l) lift trucks (forklifts) equipped with booms; and
m) tower cranes (i.e., fixed, climbing, mobile, travelling, and self-erecting) (see CAN/CSA-Z248).
1.7 Units of Measure
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.
1.8 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.
You may comment on any section of this document by clicking the “Submit Comment” link at the bottom of the relevant section.