[CCMC 13300-R] CCMC Canadian code compliance evaluation

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as joists in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

Ontario Building Code

Ruling No. 09-03-201 (13300-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2009-03-04 (revised 2015-09-28) pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.

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

BCI®Joists

Product description

The product is a prefabricated wood I-joist available in 12 series. Five of the twelve series are manufactured with western species wood, while the remaining seven are manufactured with southern species wood. The I-joist is made from laminated veneer lumber (LVL) flanges with an oriented strandboard (OSB) web. The flanges are made from laminating veneers of Douglas Fir, Southern Yellow Pine, Western Hemlock and eucalyptus (see CCMC 12472-R.) The top and bottom flanges are available in depths ranging from 29 mm to 38 mm and widths ranging from 51 mm to 89 mm. The web consists of 9.5-mm or 11.1-mm thick OSB in 1 219-mm segments. The flange width, depth and grade are listed in Table 1 below.

The web-flange connection is made by inserting the profiled OSB web into a profiled groove in the centre of the wide face of the flange (both top and bottom flanges). The web-to-web joints are bonded with a polyurethane emulsion polymer (PEP) adhesive and the web-to-flange joints are bonded with an emulsion polymer isocyanate (EPI) adhesive.

The products listed in Table 1 below are the products that have been tested and are currently being manufactured by Boise Cascade Company. See Offered products with calculated properties below for a list of the products, with their calculated properties, that can be manufactured.

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 products are intended for use in structural applications, such as floor joists, and are intended for dry service use^{Footnote (1)} applications only.
• The following pre-engineering information has been provided to the CCMC by the manufacturer to demonstrate compliance to Part 9 Buildings for acceptance by the local authority having jurisdiction (AHJ):
   Manufacturer's pre-engineered design tables

  When the products are used as floor joists and roof rafters in simple (single) spans or as floor joists in continuous (multiple) span applications supporting uniform loads only, the installation must be in accordance with the span tables (including vibration criteria^{Footnote (2)}) found in the documents entitled:

  • BCI^® Specifier Guide Eastern Canada, April 2017; and
  • BCI^® Specifier Guide Western Canada, April 2017.

  The product must be installed in accordance with the manufacturer’s installation guidelines noted in the above-mentioned documents for those applications falling within the scope of the documents. Applications outside the scope of these installation guidelines shall require engineering on a case-by-case basis.

   Manufacturer's pre-engineered installation details

  The manufacturer’s pre-engineered details within the documents listed above are limited in scope to building designs where the following details are not exceeded (page references are the same in both documents):

  • rim board maximum vertical load (page 21);
  • squash blocks maximum vertical load (page 9);
  • blocking panel maximum vertical load (page 9);
  • web stiffener requirements (page 10);
  • loadbearing cantilever tables (page 12);
  • cantilever balcony (page 11);
  • web hole tables (page 13); and
  • roof joist details (pages 14 to 20).
  Engineering required

  For structural applications beyond the scope and limitations of the above-referenced publications or when required by the AHJ, the drawings or related documents must bear the authorized seal of a professional engineer skilled in wood design and licensed to practise under the appropriate provincial or territorial legislation.

  Installations beyond the scope/limitations of the Manufacturer's pre-engineered design tables and the Manufacturer's pre-engineered installation details imply, but are not limited to, the following:

  • higher loads/longer spans than manufacturer’s pre-engineered details;
  • concentrated loads;
  • offset bearing walls;
  • areas of high wind and high seismicity;
  • stair openings;
  • design of supporting wall studs/beams when the total load exceeds the NBC 2015 pre-engineered floor/roof joist tables; and
  • design of supporting foundation footings when the total load exceeds the NBC 2015 pre-engineered floor/roof joist tables.

  The engineer must design in accordance with CSA O86-14 and may use as a guide the Engineering Guide for Wood Frame Construction, published by the Canadian Wood Council.

  Engineering support provided by the manufacturer

  The manufacturer provides engineering support and may also be consulted in the use of this proprietary prefabricated I-joist by:

  • telephone at 506-735-3561; or
  • fax at 506-736-0929.
• This product must be identified with the phrase “CCMC 13300-R” along the side of the web or flange of the product. The CCMC number is only valid when it appears in conjunction with the certification mark of APA, who will be conducting the third-party quality assurance and product certification. 
• Damaged or defective joists must not be used, unless repaired in accordance with written instructions from the manufacturer. 

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

General

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. Additional engineering data and load/span tables are available from the manufacturer as outlined under Conditions and limitations.

Fire-protection options

The performance of the fire-protection options below are presented as additional information for authorities having jurisdiction. This section is beyond the scope of the CCMC's Code compliance opinion related to the evaluation of structural performance.

Fire performance of innovative structural products

The CCMC Registry of Product Assessments contains opinions on the suitability-for-use of products intended as structural elements in houses. Although historically there has been no need to regulate the structural fire performance of houses, an inherent intent of the National Building Code of Canada (NBC) is that occupants have sufficient time to escape from a building in the event of a fire. There are many factors that may determine whether that intent is achieved. The fire endurance of structural elements may be one. However, its importance may be minimized by other factors such as combustible content load, early warning devices, smoke movement and toxicity, and fire department response time; all contributing to the overall system performance. Research is underway within the NRC Construction Research Centre to determine the critical factors that affect occupant escape from houses.

Some innovative structural products have been used in the marketplace for several years and have gained the confidence of design professionals, code authorities and users with respect to their performance under typical fire scenarios in today's house system. Some newer products have not been in service long enough to have gained that confidence and may present a more obvious concern.

The minimum fire performance of innovative structural materials, or alternative solutions, as compared to that of the NBC-specified conventional wood-frame construction, or acceptable solution, has been the subject of analysis and discussion for several years among fire officials, provincial and territorial regulators, and AHJs. In fire tests conducted between 2002 and 2008 at the NRC, the innovative structural joist systems tested, and currently in the marketplace (i.e., I-joists, C-channel steel joists, metal-plated wood trusses and metal-web trusses), had a time-to-collapse below the performance of exposed 38 mm × 235 mm (2 × 10) lumber joists.

The CCMC provides this floor fire performance information to the local AHJs across Canada to aid their decision-making on whether the fire performance of floors (i.e., the time to evacuate before failure occurs) for alternative joist systems performs “as well as” the inherent fire performance of exposed 38 mm × 235 mm (2 × 10) lumber joists. As is the case for all innovative products, designers and authorities should exercise judgment in considering the use of innovative structural products for houses. Unless otherwise stated, innovative structural products for houses have not been evaluated in the context of the NBC intent noted above.referrer

The CCMC has reviewed the fire-protection options below in comparison to the fire performance of an unprotected exposed 38 mm × 235 mm (2 × 10) floor joist system.  The presented fire-protection options performs “as well as” exposed 38 mm × 235 mm (2 × 10) lumber joists. It should be noted that the NBC 2015 exempts single-family houses constructed using conventional wood-frame construction, in accordance with Part 9, from requiring a fire-resistance rating (see Article 9.10.8.10. of Division B of the NBC 2015). The below fire-protection options for alternative floor joists are not to be considered in sprinklered single-family houses or where fire-resistance-rated assemblies are required.

The following fire protection assemblies are applicable for the evaluated products as provided in Table 4.

Table 4.  Applicable BCI joists for fire protection assemblies based on flange size

Product	Flange size (thickness × width) (mm)	Fire protection assembly
BCI 5000 1.7	29 × 51	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 6000 1.8	29 × 59	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 6500 1.8	29 × 65	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 60 2.0	38 × 59	FP-01, FP-02, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 90 2.0	38 × 89	FP-01, FP-02, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 4500s 1.8	29 × 44.5	FP-03, FP-04
BCI 5000s 1.8	29 × 51	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 6000s 1.8	29 × 59	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 6500s 1.8	29 × 65	FP-01, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 60s 2.0	38 × 59	FP-01, FP-02, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 90s 2.0	38 × 89	FP-01, FP-02, FP-03, FP-04, FP-06, FP-07, FP-09
BCI 90e 2.0	38 × 89	FP-01, FP-02, FP-03, FP-04, FP-06, FP-07, FP

Industry-based fire-protection options

Fire-protection options

The details of the following industry-based fire-protection floor assemblies^{Footnote (1)} are outlined in the figures below.

1. FP-01 - 12.5 mm (1/2 in.) Gypsum Board Attached to Bottom of Flange
2. FP-02 - 12.5 mm (1/2 in.) Gypsum Board Attached Directly to Web
3. FP-03 - 12.5 mm (1/2 in.) Gypsum Board Attached Directly to Sides of Flange
4. FP-04 - Mineral Wool Insulation
5. FP-06 - 12.5 mm (1/2 in.) Gypsum Board Installed on Top of the Bottom Flange
6. FP-07 - 15.8 mm (5/8 in.) Gypsum Board Installed on Top of the Bottom Flange
7. FP-09 - Rockwool SAFE’n’Sound® Mineral Wool Insulation

Fire protection assembly details

The following floor assembly design (FP-01) is the default alternative solution for all cases and where the manufacturer has not undertaken any specific testing to show equivalency to exposed 38 x 235 mm (2×10) lumber with proprietary joist fire-protection options.

Fire protection of floors FP-01

 The remaining fire-resistance designs, FP-02 to FP-09, provide fire performance as good as to 38 mm × 235 mm (2 × 10) dimensional lumber exposed floor joists.

Fire protection of floors FP-02

Fire protection of floors FP-03

Fire protection of floors FP-04

 For assemblies where mineral-fibre insulation is installed to provide joist protection in a fire, as per NBC 2015, Sentence 9.25.2.3.(7), any insulation that may be subjected to mechanical damage is to be protected by a covering such as gypsum board, plywood, particleboard, oriented strandboard (OSB) or hardboard 

Fire protection of floors FP-06

Table 5. Table for FP-06^{Table footnote footnote (3)}

Joist spacing	Required length for gypsum boards
300 mm (12 in.)	282.5 mm (11-1/8 in.) ± 3.2 mm (1/8 in.)
400 mm (16 in.)	384.2 mm (15-1/8 in.) ± 3.2 mm (1/8 in.)
487 mm (19.2 in.)	467 mm (18-3/8 in.) ± 3.2 mm (1/8 in.)

Fire protection of floors FP-07

Table 6. Gypsum board length for FP-07^{Table footnote footnote (4)}

Joist spacing	Required length for gypsum boards
300 mm (12 in.)	282.5 mm (11-1/8 in.) ± 3.2 mm (1/8 in.)
400 mm (16 in.)	384.2 mm (15-1/8 in.) ± 3.2 mm (1/8 in.)
487 mm (19.2 in.)	467 mm (18-3/8 in.) ± 3.2 mm (1/8 in.)
600 mm (24 in.)	587 mm (23-1/8 in.) ± 3.2 mm (1/8 in.)

Fire protection of floors FP-09

For assemblies where mineral-fibre insulation is installed to provide joist protection in a fire, as per NBC 2015, Sentence 9.25.2.3.(7), any insulation that may be subjected to mechanical damage is to be protected by a covering such as gypsum board, plywood, particleboard, oriented strandboard (OSB) or hardboard