[CCMC 06292-R] CCMC Canadian code compliance evaluation

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as a fire- and sound-rated floor-ceiling assembly in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

The above opinion(s) is/are based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information that forms the basis of this evaluation has been included.

Product name

Hambro Floor-Ceiling Assembly

Product description

Hambro Floor-Ceiling Assembly is a floor-ceiling assembly composed of a concrete slab, steel joists, furring channels and gypsum boards. The concrete slab is, at minimum, 65 mm thick and minimally reinforced with an embedded 4.2 mm diameter wire mesh that is 150 mm × 150 mm. The minimum strength of the concrete at 28 days must be at least 20 MPa.

The steel joists are Hambro D500 open-web with temporary plywood deck (Figure 1 and Figure 3), Hambro D510 solid web (Figure 2), and Hambro MD2000 steel deck (Figure 4) with composite joists spaced typically at 1 260 mm on centre (o.c.). They may be spaced up to 1 830 mm (refer to the G524 fire test). The top chord is embedded 38 mm into the concrete slab. Galvanized steel furring channels that are 0.45 mm thick, 67 mm wide and 22 mm deep are secured to each joist with 1.2 mm diameter galvanized steel wire. The furring channels are installed perpendicular to the joists at 400 mm or 600 mm o.c., depending on the drywall (refer to the G524 fire test). Type C gypsum boards that are 12.7 mm or 15.9 mm thick are then fastened to the furring channels.

As an alternative to metal furring and gypsum wallboard, some designs use suspended ceilings with steel framing members and various types of lay-in panels as detailed in ULC publications and cUL listings.

For complete drawings, refer to the Underwriters’ Laboratories of Canada Floor and Ceiling Construction Design Nos. I506, I518 and I800 published in their “List of Equipment and Materials,” Volume II. For cUL Design No. G524, refer to the UL “Fire Resistance Directory” for Canada. For more information see Figure 1 and Figure 2.

Manufacturing plants

This evaluation is limited to products produced at the following plants:

Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC

The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.

• The product is permitted for use in construction where a fire-resistance rating is required for a floor assembly. Such a rating must be determined in conformance with CAN/ULC-S101, “Fire Endurance Tests of Building Construction and Materials.”
• The product is also permitted for use where a sound transmission class rating is required for floor construction. The sound transmission class rating provided in this report is for information only. The ASTC (apparent sound transmission class), STC (sound transmission class), FSTC (field sound transmission class) and IIC (impact insulation class) or AIIC (apparent impact insulation class) published in the report indicate that a proposed system may be able to achieve these results. To obtain the sound transmission class rating between units in buildings it must be determined in accordance with ASTM E 336-11, “Measurement of Airborne Sound Attenuation between Rooms in Buildings” or calculation carried out in accordance with Article 5.8.1.4., Detailed Method for Calculating ASTC, or Article 5.8.1.5., Simplified Method for Calculating ASTC, of Division B of the NBC 2015.
• The product must be installed by qualified installers.
• The product must be supported by a structure designed by a professional engineer skilled in structural design and licensed to practise under the appropriate provincial or territorial legislation.
• The product may be used in combustible or noncombustible construction where a fire-resistance rating is required only if the system has a ULC or cUL listing.
• Openings in the product must comply with limitations allowed by the G524 fire test.
• The product drawings and documents, which are related to span and spacing, must bear the authorized professional seal and signature of an engineer skilled in structural design and licensed to practise under the appropriate provincial or territorial legislation. The cUL G524, as published in the UL “Fire Resistance Directory” of Canada, must also bear the same authorized professional seal and signature of an engineer.
• The flanking wall assemblies shall be constructed in accordance with Article 9.11.1.4., Adjoining Constructions, of Division B of the NBC 2015. Table A-9.11.1.4.-C presents compliance options for the construction of vertically adjoining spaces.

This evaluation is based on demonstrated conformance with the following criteria:

The evaluation holder has submitted technical documentation for the CCMC’s evaluation. Testing was conducted at laboratories recognized by the CCMC. The corresponding technical evidence for this product is summarized below.

Fire endurance testing was conducted by the Underwriters’ Laboratories of Canada (ULC). Sound transmission class ratings were determined by laboratories recognized by the CCMC and from results obtained in the field.

ULC fire rated assembly designs

Sound transmission class ratings

Images and examples