Draft Details
- Code of practice for access scaffold
- Draft Standard Z797-20XX Code of practice for ...
- Legal Notice for Draft Standards
- Preface
- Z797 -xx Code of practice for access scaffold
- + 1 Scope
- 1.1 Purpose
- 1.2 Subjects addressed
- 1.3 Equipment not covered
- 1.4 Terminology
- 1.5 Measurement
- 2 Reference publications
- 3 Definitions
- + 4 Work planning
- 4.1 Hazard awareness
- 4.2 Considerations for selection of scaffold an...
- + 5 Erection and moving of scaffold
- + 5.1 Qualification of personnel
- 5.1.1 Supervisor
- 5.1.2 Workers
- 5.2 General
- + 5.3 Electrical hazards
- 5.3.1 Minimum safe approach distance from energ...
- This table shows the minimum distances that wo...
- 5.3.2 Induced electrical charge
- 5.4 Inspection of components prior to and durin...
- 5.5 Corrective measures
- + 5.6 Foundations and sills
- 5.6.1 General
- 5.6.2 Hard surfaces
- 5.6.3 Soil surfaces
- 5.6.4 Sills
- 5.6.5 Sloping surfaces
- 5.7 Base plates and screw jacks
- + 5.8 Assembly
- 5.8.1 Attachment of accessory or appliance
- + 5.8.2 Level and plumb
- 5.8.2.1 Tolerances
- 5.8.2.2 Adjustment
- 5.8.3 Bracing
- 5.8.4 Sequencing
- 5.8.5 Additional assembly requirements for hang...
- + 5.8.6 Additional assembly requirements for roll...
- 5.8.6.1 General
- 5.8.6.2 Support surface and scaffold wheels
- 5.8.6.3 Scaffold with casters
- 5.8.6.4 Scaffold mounted on farm-wagon chassis
- 5.8.6.5 Securing of components
- 5.8.6.6 Bracing
- 5.8.6.7 Moving of rolling scaffold
- 5.8.6.8 Preparing scaffold for access
- 5.8.7 Additional assembly requirements for timb...
- + 5.8.8 Additional assembly requirements for tube...
- 5.8.8.1 General
- 5.8.8.2 Alignment of standards at base
- 5.8.8.3 Ledgers and transoms
- 5.8.8.4 Joints in standards and ledgers
- 5.8.8.5 Bracing
- 5.8.8.6 Attachment of clamps
- + 5.9 Scaffold stability
- 5.9.1 Free-standing or rolling scaffold
- + 5.9.2 Tied or guyed scaffold
- 5.9.2.1 General
- 5.9.2.2 Tied scaffold
- 5.9.2.3 Guyed scaffold
- 5.10 Bridge sections
- + 5.11 Scaffold platforms
- 5.11.1 General
- 5.11.2 Duty rating categories
- + 5.11.3 Sawn lumber scaffold planks
- 5.11.3.1 General
- 5.11.3.2 Lumber grades
- 5.11.3.3 Duty ratings and allowable spans
- + 5.11.4 Laminated lumber scaffold planks
- 5.11.4.1 General
- 5.11.4.2 Laminated lumber grade
- 5.11.4.3 Duty ratings and allowable spans
- + 5.11.5 Manufactured scaffold planks or decks ma...
- 5.11.5.1 General
- 5.11.5.2 Grade
- 5.11.5.3 Duty ratings and allowable spans
- 5.11.6 Configuration
- 5.11.7 Gaps or openings in platforms
- 5.11.8 Cantilever platforms supported by end or...
- + 5.11.9 Platform support
- 5.11.9.1 Support of scaffold planks
- 5.11.9.2 Support of manufactured scaffold decks...
- 5.11.10 Restraint of sawn lumber scaffold plank...
- 5.11.11 Restraint of manufactured scaffold plan...
- 5.11.12 Restraint of manufactured scaffold deck...
- 5.11.13 Additional platform requirements for ro...
- + 5.12 Guardrails
- 5.12.1 General
- 5.12.2 Guardrail removal
- 5.12.3 Guardrail components
- + 5.12.4 Guardrail loads
- 5.12.4.1 Top rails, midrails, and toe boards
- 5.12.4.2 Posts
- + 5.13 Access and egress
- 5.13.1 General
- 5.13.2 Vertical ladders
- 5.13.3 Ladder cages
- 5.13.4 Portable ladders
- 5.13.5 Stairs
- 5.13.6 Ramps
- 5.13.7 Maximum gap for direct access
- 5.14 Scaffold enclosures
- + 5.15 Engineered scaffold
- 5.15.1 Criteria
- 5.15.2 Design drawings
- 5.15.3 Inspection of engineered scaffold
- + 5.16 Hoisting loads
- 5.16.1 Controlled access
- 5.16.2 Communication and hand signaling
- + 5.16.3 Manual hoisting
- 5.16.3.1 Manual passing (handballing, handbombi...
- 5.16.3.2 Hand-line or light-line hauling
- 5.16.3.3 Gin-wheel
- 5.16.3.4 Rope for manual hoisting
- + 5.16.4 Powered hoisting
- 5.16.4.1 General
- 5.16.4.2 Slings and rigging
- 5.16.5 Storage of scaffold components on platfo...
- 5.17 Falling object protection
- + 5.18 Alteration of scaffold
- 5.18.1 Non-engineered scaffold
- 5.18.2 Engineered scaffold
- 5.19 Moving of assembled scaffold
- 5.20 Dismantling
- + 6 Fall protection
- 6.1 General
- 6.2 Application
- 6.3 Principles
- 6.4 Elimination or minimization of fall hazards...
- 6.5 Planning and selection of fall protection s...
- + 6.6 Training and instruction for fall protectio...
- + 6.6.1 General
- 6.6.1.1 Selection and Development
- 6.6.2 Core training elements
- + 6.6.3 Training
- 6.6.3.1 General training elements of fall prote...
- 6.6.3.2 Training for workers and supervisors
- 6.6.3.3 Training for management
- 6.6.3.4 Rescue training
- + 6.7 Passive fall protection
- 6.7.1 General
- 6.7.2 Guardrail
- 6.7.3 Safety net
- 6.7.4 Advance guardrail system
- + 6.8 Active fall protection
- 6.8.1 General
- 6.8.2 Travel restraint system
- + 6.8.3 Personal fall arrest systems
- 6.8.3.1 General
- 6.8.3.2 Personal fall arrest system connected d...
- 6.8.3.3 Personal fall arrest system connected t...
- 6.8.3.4 Personal fall arrest system connected t...
- + 7 Safe-use practices
- + 7.1 General
- 7.1.1 Supervisor
- 7.1.2 Workers
- + 7.2 Inspection schedule
- 7.2.1 General
- 7.2.2 Scaffold status
- 7.2.3 Communication of scaffold status
- + 7.2.4 Corrective action
- 7.2.4.1 Scaffold with a potential or unusual ha...
- 7.2.4.2 Scaffold that is unsafe for use
- + 7.3 Scaffold tagging
- 7.3.1 General
- 7.3.2 Placement of tags
- + 7.3.3 Use of tags
- 7.3.3.1 Green tag
- 7.3.3.2 Yellow tag
- 7.3.3.3 Red tag
- 7.3.3.4 Missing tag
- 7.3.4 Responses to scaffold tags
- + 7.4 Allowable platform loads
- + 7.4.1 Communication of duty rating to user
- 7.4.2.1 Storage of materials, tools, and equipm...
- 7.4.2.2 Hoisting a load to or from a scaffold
- + 7.5 Special requirements
- 7.5.1 Sudden impacts
- 7.5.2 Improper increase of working height
- 7.5.3 Caution for enclosed scaffolds
- 7.5.5 Falling objects
- + 7.6 Alteration of scaffold
- 7.6.1 Qualifications of personnel
- 7.6.2 Care and safety
- 7.7 Electrical hazards
- 7.8 Access and egress
- 7.9 Housekeeping
- 7.10 Equipment on scaffold
- 7.11 Change of use of scaffold
- 7.12 Additional safe-use practices for rolling ...
- + 8 Inspection
- 8.1 Inspection of components prior to and durin...
- 8.2 Inspection of engineered scaffold
- 8.3 Inspection by user before use
- 8.4 Periodic inspection
- 8.5 Action following an inspection
- 8.6 Documentation and recordkeeping
- + 9 Scaffold training program requirements
- + 9.1 General requirements
- 9.1.1 General
- 9.1.2 Process for establishing, implementing, a...
- 9.1.3 Training by persons competent in scaffold...
- 9.1.4 Occupational health and safety (OHS) mana...
- 9.2 Determine the need for a scaffold training ...
- 9.3 Scaffold training program objectives
- 9.4 Requirements of a scaffold training program...
- + 9.5 Roles and responsibilities
- + 9.5.1 Employer
- 9.5.1.1 Establishing the training program
- 9.5.1.2 Supporting the training program
- 9.5.2 Supervisor
- 9.5.3 Workers
- + 10 Implementation of a scaffold training progra...
- 10.1 General
- + 10.2 Training course needs analysis
- 10.2.1 General
- 10.2.2 Inputs (employer expectations, performan...
- 10.3 Training course objectives
- + 10.4 Training provider competency
- 10.4.1 General
- 10.4.2 Subject matter expertise
- 10.4.3 Adult learning delivery skills
- 10.4.4 People skills
- 10.4.5 Proficiency in the use of scaffold equip...
- 10.5 Qualification of trainers
- + 10.6 Training course design
- 10.6.1 Criteria
- 10.6.2 Design plan
- 10.6.3 Structure
- + 10.6.4 Delivery methods and materials
- 10.6.4.1 General
- 10.6.4.2 In-person learning
- + 10.6.4.3 eLearning
- 10.6.4.3.1 Asynchronous eLearning
- 10.6.4.3.2 Synchronous eLearning
- + 10.6.4.4 Resource materials
- 10.6.4.4.1 General
- 10.6.4.4.2 Trainee materials
- 10.6.4.4.3 Instructor materials
- 10.6.4.4.4 Equipment
- + 10.6.5 Evaluation of trainees and test methods
- 10.6.5.1 Evaluation methods
- 10.6.5.2 Written tests and alternative evaluati...
- 10.6.5.3 Evaluation of knowledge and procedural...
- + 10.7 Training course delivery
- 10.7.1 Availability and accessibility of traini...
- 10.7.2 Training course delivery methods
- 10.7.3 Training provider planning and preparati...
- 10.7.4 Learning environment
- 10.7.5 Notice of training
- 10.7.6 Effective use of delivery methods and ma...
- 10.7.7 Delivery of training course
- 10.7.8 Application of adult learning principles...
- + 10.8 Training course evaluation
- 10.8.1 Evaluation of training courses
- 10.8.2 Training provider and course evaluations...
- 10.8.3 Measurement of learning/requirements met...
- 10.8.4 Assessment of training course objectives...
- + 10.9 Training course continual improvement
- 10.9.1 General
- 10.9.2 Training course improvements
- 10.9.3 Conclusions and recommendations on the i...
- + 11 Documents and records
- 11.1 Documents
- 11.2 Records
- + 11.3 Confidentiality and availability
- 11.2.1 Individual records
- 11.2.2 Certificate or card
- + 12 Competency tables
- 12.1 General
- 12.2 Knowledge
- 12.3 Procedural knowledge
- + Annex A (informative)
- A.1 General
- A.2 Façade scaffold
- A.3 Area scaffold
- A.4 Tower scaffold
- A.5 Outrigger scaffold
- A.6 Rolling scaffold
- A.7 Bridging scaffold
- + Annex B (informative)
- B.1 Frame scaffold
- B.2 Tube-and-clamp scaffold
- B.3 System scaffold
- B.4 Timber scaffold
- B.5 Hanging scaffold
- B.6 Single-pole scaffold
- B.7 Specialty scaffold
- + Annex C (normative)
- C.1 General
- C.2 Lumber species and grade
- C.3 Nailing
- C.4 Spacing of components
- C.5 Bracing of uprights
- C.6 Cross-bracing
- C.7 Single-pole components
- C.8 Double-pole components
- C.9 Extension of standards
- C.10 Laminated standards
- C.11 Transom supports for a single-pole scaffol...
- + Annex D (normative)
- D.1 Inspection of new sawn lumber scaffold plan...
- + D.2 Inspection of used sawn lumber scaffold pla...
- D.2.1 General
- + D.2.2 Criteria for repair and retirement
- D.2.2.1 Knots
- + D.2.2.2 End splits, checks, and shakes
- D.2.2.2.1 End split
- D.2.2.2.2 Check
- D.2.2.2.3 Shake
- D.2.2.3 Breaks
- + D.2.2.4 Warping
- D.2.2.4.1 General
- D.2.2.4.2 Bow
- D.2.2.4.3 Crook
- D.2.2.4.4 Cup
- D.2.2.4.5 Twist
- D.2.2.5 Depressions or gouges
- D.2.2.6 Saw kerfs
- D.2.2.7 Notches
- + D.2.2.8 Contamination
- D.2.2.8.1
- D.2.2.8.2
- D.2.2.8.3
- D.2.2.8.4
- D.2.2.8.5
- D.2.2.9 Evaluation of damage
- + D.3 Storage, handling, and disposal of sawn lum...
- D.3.1 General
- D.3.2 Storage
- D.3.3 Disposal
- + Annex E (informative)
- E.1 Examples of maximum loads
- + Annex F (normative)
- F.1 Inspection of new laminated lumber scaffold...
- + F.2 Inspection of used laminated lumber scaffol...
- F.2.1 General
- + F.2.2 Criteria for repair and retirement
- F.2.2.1 End splits
- F.2.2.2 Narrow face splits
- F.2.2.3 Face breaks
- F.2.2.4 Warping
- F.2.2.5 Delamination
- F.2.2.6 Depressions or gouges
- F.2.2.7 Saw kerfs
- F.2.2.8 Notches
- + F.2.2.9 Contamination
- F.2.2.9.1 Wood decay
- F.2.2.9.2 Causes
- F.2.2.9.3 Chemical Contact
- F.2.2.9.4 Radioactivity
- F.2.2.9.5 Inspection
- F.2.2.10 Evaluation of damage
- + F.3 Storage, handling, and disposal of laminate...
- F.3.1 General
- F.3.2 Storage
- F.3.3 Disposal
- + Annex G (normative)
- G.1 New manufactured scaffold planks and decks
- G.2 Common causes of damage
- G.3 Inspection of manufactured planks and decks...
- G.4 Evaluation of damage to manufactured planks...
- G.5 Storage and handling
- G.6 Disposal
- Annex H (informative)
1.1 Purpose
The purpose of this Standard is to provide criteria for the safe erection, use, and inspection of access scaffold (as covered in CSA S269.2 and engineered systems) and for the training of erectors and users of such equipment.
1.2 Subjects addressed
This Standard applies to the erection, use, and inspection of access scaffold, and training requirements for access scaffold that is
supported on a surface;
hung from multiple points, but is not capable of moving vertically or horizontally; or
mounted on wheels.
These Standard addresses key hazards, including fall hazards, structural instability, platform failures, and material handling issues.
Note: In this Standard, the term “erection” refers to the assembling, altering, or dismantling of a scaffold.
While this Standard applies to scaffold as defined in Clause 3, this Standard is not limited to scaffold used solely for the purpose of construction, maintenance, or repair operations.
1.3 Equipment not covered
This Standard does not apply to the following:
falsework and formwork for construction purposes, as covered in CSA S269.1;
suspended access equipment, as covered in CSA Z91 and CAN/CSA-Z271;
elevating work platforms, as covered in CAN/CSA-B354.6, CAN/CSA-B354.7, and CAN/CSA-B354.8;
manual or powered mast-climbing work platforms, such as a pump jack scaffold or equipment covered in CSA B354.9, CSA B354.10, and CSA B354.11;
centre-pole scaffolds; and
appliances or accessories attached to scaffold.
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; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability.
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 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.
You may comment on any section of this document by clicking the “Submit Comment” link at the bottom of the relevant section.