Standards

This document applies to single storey houses up to 7.62 m x 12.19 m (25 ft x 40 ft) plan, with hollow block masonry or timber framed walls, and timber framed or concrete roofs.  It provides the user with the technical information to supervise the construction of a safe and durable house, and to facilitate checks on whether a safe and durable house is being built.

This document does not include construction details for utilities (including plumbing, electrical, communications, security, and natural gas.  It also does not include construction details for solid brick masonry.

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 that is

a) supported on a surface;

b) hung from multiple points, but is not capable of moving vertically or horizontally; or

c) mounted on wheels.

This Standard addresses key hazards, including fall hazards, structural instability, platform failures, and material handling problems.

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:

a) falsework and formwork for construction purposes, as covered in CSA S269.1;

b) suspended access equipment, as covered in CSA Z91 and CAN/CSA-Z271;

c) elevating work platforms, as covered in CAN/CSA-B354.6, CAN/CSA-B354.7, and CAN/CSA-B354.8;

d) 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;

e) centre-pole scaffolds; and

f) 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.

This standard can be purchased via the Canadian Standards Association website https://www.csagroup.org/store/product/Z797-18/ 

The scope of the International Building Code® (IBC®) includes all buildings except detached one- and two-family dwellings and townhouses up to three stories. For the most current adoptions details go to International Code Adoptions

The 2018 IBC contains many important changes such as:

• Accessory storage spaces of any size are now permitted to be classified as part of the occupancy to which they are accessory.
• New code sections have been introduced addressing medical gas systems and higher education laboratories.
• Use of fire walls to create separate buildings is now limited to only the determination of permissible types of construction based on allowable building area and height.
• Where an elevator hoistway door opens into a fire-resistance-rated corridor, the opening must be protected in a manner to address smoke intrusion into the hoistway.
• The occupant load factor for business uses has been revised to one occupant per 150 square feet.
• Live loads on decks and balconies increase the deck live load to one and one-half times the live load of the area served.
• The minimum lateral load that fire walls are required to resist is five pounds per square foot.
• Wind speed maps updated, including maps for the state of Hawaii. Terminology describing wind speeds has changed again with ultimate design wind speeds now called basic design wind speeds.
• Site soil coefficients now correspond to the newest generation of ground motion attenuation equations (seismic values).
• Five-foot tall wood trusses requiring permanent bracing must have a periodic special inspection to verify that the required bracing has been installed.
• New alternative fastener schedule for construction of mechanically laminated decking is added giving equivalent power-driven fasteners for the 20-penny nail.
• Solid sawn lumber header and girder spans for the exterior bearing walls reduce span lengths to allow #2 Southern Pine design values.