[CCMC 14204-R] CCMC Canadian code compliance evaluation

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as an exterior cladding 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

beonstone

Product description

beonstone is a concrete stone veneer panel with a standoff and embedded metal strip support structure used for exterior cladding. It is mechanically attached to a proprietary^{Table footnote (1)} engineered structural wood sheathing and stud framing design detailed in Appendix A.

The concrete stone veneer panel is composed of Portland cement, water, aggregates, pigments and paint. The product is cast in moulds that produce different textures. beonstone is 610 mm in length, 305 mm in width and approximately 38 mm in thickness. beonstone has four different profiles: CLASSIC, CANYON, ELEMENT and HORIZON. The figure below illustrates beonstone with the ELEMENT profile.

beonstone is mechanically attached to the supporting structure using an embedded metal strip with a polypropylene standoff. The beonstone starter strip is attached to the bottom of the first row of beonstone. The top and bottom edges of beonstone are designed to interlock with each other. The embedded metal strip is Type 304 stainless steel and the fasteners are minimum No. 10 × 1 in. fully threaded stainless steel wood screws. The polypropylene standoff is designed as a spacer to create a 10-mm-deep drained and vented air space behind the cladding (i.e., a rainscreen system).

Instead of the masonry being supported on the foundation, the product is supported by the wood frame. Therefore, the product must be installed according to the proprietary wood-frame construction details. These construction details are in Appendix A, and include increased top and bottom plates, less stud spacing, horizontal sheathing, etc.

Manufacturing plant

This evaluation is valid only for products produced at the following plant:

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.

General

• The components of the backup wall construction must be in full compliance with the requirements of Part 9, Housing and Small Buildings, of Division B of the NBC 2015 in conjunction with the conditions and limitations listed in this report.
• The product is limited to use as exterior cladding for the buildings falling within the scope of Part 9, Housing and Small Buildings, of Division B of the NBC 2015 in conjunction with the conditions and limitations listed in this report. It must be installed on structural grade wood sheathing boards that are attached to wood framing in accordance with the backup wall design specified in Appendix A of this Report. It is installed on structural grade wood sheathing boards that are attached to wood framing in accordance with the backup wall design specified in Appendix A of this evaluation.
• The product is not intended for use in retrofit construction.
• The product is limited to installation on buildings not exceeding two (2) storeys, with a maximum height of 3 m per floor, with a maximum building plan of 24 m × 12 m and with a maximum floor joist clear span of 8 m. The joist span tables referred to Article 9.23.4.2., Spans for Joists, Rafters and Beams, of Division B of the NBC 2015, apply to floors supported by sawn lumber joists. If the framing is other than sawn lumber (e.g., I-joist), the floors are required to be designed in conformance with Part 4, Structural Design, of Division B of the NBC 2015.
• The product is limited to installations in geographical areas where the 1-in-50 hourly wind pressure is ≤ 0.70 kPa and the building is Category 2 for internal pressure (C_pi: –0.45 to +0.30), as defined in Article 4.1.7.7., Internal Pressure Coefficient, of Division B of the NBC 2015. The wind design value has been validated for the product installed over horizontally installed plywood or oriented strandboard (OSB) structural sheathing with a minimum thickness of 12.5 mm for plywood and 11 mm for OSB.
• The product must be applied in geographical areas where the spectral response acceleration S_a(0.2) is 1.2 or less, and the building is on a Class C site or better, as defined in Article 4.1.8.4., Site Properties, of Division B of the NBC 2015.
• The 10-mm air space that is created by the clips must remain unobstructed to form a clear drainage layer behind the product.
• At least one layer of wall-sheathing membrane conforming to Article 9.27.3.2., Sheathing Membrane Material Standard, of Division B of the NBC 2015, must be applied beneath the cladding products. The sheathing membrane must be applied in accordance with Article 9.27.3.3., Required Sheathing Membrane and Installation, of Division B of the NBC 2015.
• The product must be installed with suitable flashing to drain water from the drainage layer to the exterior and to protect the exposed top edge of the cladding.
• Flashing must be installed in accordance with the requirements of Articles 9.27.3.7., Flashing Materials, and 9.27.3.8., Flashing Installation, of Division B of the NBC 2015.
• The impact resistance of the product makes it susceptible to hard- and soft-body impacts. However, the ease of replacing the product makes it suitable for normal use in upper floors and protected ground floors. When used at ground floors exposed to high impacts, special precautions must be taken, such as installing guardrails or raised gardens.
• Fire blocks must be installed in accordance with the requirements of Article 9.10.16.2., Required Fire Blocks in Wall Assemblies, of Division B of the NBC 2015.
• The product must be installed in accordance with the manufacturer’s current instructions “Technical Guide BEONSTONE PANELIZED STONE SIDING,” version 19.12, dated December 2019.
• To obtain an acceptable performance, a high level of quality control at all stages of the exterior wall construction is imperative.
• This evaluation is applicable only to products identified by the phrase “CCMC 14204-R.”

Structural

• The product is to be installed on a pre-engineered wood frame designed to support this proprietary product. The installation of the product must be in accordance with the engineering analysis as prepared by Quaile Engineering Ltd. in Report No. 19-096-1 Rev 1, dated April 6, 2020. The pre-engineered design solutions are produced in the engineering analysis and reproduced in Appendix A of this evaluation along with the detailed design and construction requirements. The provided pre-engineered design solutions have the following features:
  • only applied to new construction;
  • the top and bottom plates are increased, and the stud spacings are reduced;
  • the nailing of the top and bottom plates is increased;
  • squash blocks are required to support the I-joists; and
  • exterior sheathing is installed with the strong axis (face grain) oriented horizontally.
• When the product is used outside the scope and limitations of Quaile Engineering Ltd.’s Report No. 19-096-1 Rev 1, dated April 6, 2020, a special engineering analysis must be carried out by a licensed professional engineer skilled in structural design, who must sign and seal the related analysis, confirming its conformance to Part 4 of Division B of the NBC 2015.
• The stud wall must consist of 38-mm × 140-mm stud grade Spruce-Pine-Fir (S-P-F). A hole not greater than 25 mm in diameter is permitted at the centreline of the stud. No. 2 grade S-P-F plates must be used in the framing of the backup wall.
• A horizontal joint must be provided at each floor level as indicated in Figure 5.
• The fastening screws used to secure the cladding through the clips must be minimum No. 10 × 1 in fully threaded stainless steel wood screws.
• A roof overhang of up to 600 mm is permitted.
• For buildings with balconies, the tributary floor width applied to the wall shall be 4 m or less per floor.
• Cladding attachments must conform with Sentence 9.27.5.1.(1), Attachment (of Cladding) and Articles 9.27.5.5., Fastener Materials, and 9.27.5.7., Penetration of Fasteners, of Division B of the NBC 2015. For any other mode of attaching a cladding system to sheathing, the structural sufficiency of the sheathing and the whole backing, in conjunction with the clips and type of fasteners, must be in accordance with the engineering analysis as prepared by Quaile Engineering Ltd. in Report No. 19-096-1 Rev 1, dated April 6, 2020.

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

Appendix A: Pre-engineered design solutions

 

The pre-engineered solutions must be in full accordance with the engineering analysis as prepared by Quaile Engineering Ltd.’s Report No. 19-096-1 Rev 1, dated April 6, 2020. Table 6 to Table 8 provide the main pre-engineering solutions for buildings not exceeding two (2) storeys with 3 m height per floor.

A-1. Maximum stud spacing for top floor (supporting roof only)

• Top plate: two (2) 38 mm × 140 mm No. 2 Grade S-P-F
• Bottom plate: one (1) 38 mm × 140 mm No. 2 Grade S-P-F
• Stud materials: 38 mm × 140 mm stud grade S-P-F
• Maximum roof truss span: 12 m

 

Table 6. Maximum stud spacing (mm) for top floor^{Table footnote footnote (1)}

Design snow load (kPa)	Wall height (m)	1-in-50 yr hourly wind pressure (kPa)
		0.4	0.45	0.5	0.55	0.6	0.65	0.7
1	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
1.5	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
2	2.4	300	300	300	300	300	300	300
	2.7	300	300	300	300	300	300	300
	3.0	300	300	300	300	300	–	–
2.5	2.4	300	300	300	300	300	300	300
	2.7	300	300	300	300	300	300	300
	3.0	300	300	300	300	300	–	–
3	2.4	–	–	–	–	–	–	–
	2.7	–	–	–	–	–	–	–
	3.0	–	–	–	–	–	–	–

 

A-2. Maximum stud spacing for top floor with increased top and bottom plates (supporting roof only)

• Top plate: three (3) 38 mm × 140 mm No. 2 Grade S-P-F
• Bottom plate: two (2) 38 mm × 140 mm No. 2 Grade S-P-F
• Stud materials: 38 mm × 140 mm stud grade S-P-F
• Maximum roof truss span: 12 m

Table 7. Maximum stud spacing (mm) for top floor with increased top and bottom plates^{Table footnote footnote (1)}

Design snow load (kPa)	Wall height (m)	1-in-50 yr hourly wind pressure (kPa)
		0.4	0.45	0.5	0.55	0.6	0.65	0.7
1	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
1.5	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
2	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
2.5	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–
3	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	300
	3.0	400	400	300	300	300	–	–

 

A-3. Maximum stud spacing for ground floor (supporting roof and one floor)

• Top plate: two (2) 38 mm × 140 mm No. 2 Grade S-P-F
• Bottom plate: two (2) 38 mm × 140 mm No. 2 Grade S-P-F
• Stud materials: 38 mm × 140 mm stud grade S-P-F
• Maximum roof truss span: 12 m
• Maximum floor joist span: 8 m

 

Table 8. Maximum stud spacing (mm) for ground floor^{Table footnote footnote (1)}

Design snow load (kPa)	Wall height (m)	1-in-50 yr hourly wind pressure (kPa)
		0.4	0.45	0.5	0.55	0.6	0.65	0.7
1	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	–
	3.0	400	400	300	300	300	–	–
1.5	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	–
	3.0	400	400	300	300	300	–	–
2	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	–
	3.0	400	400	300	300	300	–	–
2.5	2.4	400	400	400	400	300	300	300
	2.7	400	400	400	300	300	300	–
	3.0	300	300	300	300	300	–	–
3	2.4	400	400	400	400	300	300	300
	2.7	300	300	300	300	300	300	–
	3.0	300	300	300	300	300	–	–

 

A-4. Exterior sheathing and fastening

The exterior sheathing requirements are illustrated in the following figure, and their fastening schedules are shown in the table in this section.

Table 9. Nail spacing for 11 mm OSB or 12.5 mm plywood sheathing fastened to 38 mm × 140 mm S-P-F studs

Stud spacing (mm)	Spiral nail size		Maximum nail spacing (mm)Table footnote (1) 1-in-50 hourly wind pressure (kPa)
	Length (mm)	Diameter (mm)	0.45	0.5	0.55	0.6	0.65	0.7
300	63	2.77	150	150	150	150	150	140
	76	3.1	150	150	150	150	150	150
400	63	2.77	150	140	130	120	110	100
	76	3.1	150	150	150	150	150	140

 

A-5. Details of stud wall construction

The details of the stud wall construction are illustrated in the following figure. The details are designed to accommodate the worst-case scenario for the range of conditions covered by the pre-engineered solutions.

 

A-6. Maximum lintel span

The maximum lintel span is provided in the following table. It is important to note that the lintel span tables provided in Part 9 of Division B of the NBC 2015 are not applicable to walls supporting this product.

Table 10. Maximum lintel span^{Table footnote footnote (1)}

Design snow load (kPa)	Maximum lintel clear span (m)
	Lintel supporting roof only			Lintel supporting roof and one (1) floor
	3 – 38 mm × 184 mm	3 – 38 mm × 235 mm	3 – 38 mm × 286 mm	3 – 38 mm × 184 mm	3 – 38 mm × 235 mm	3 – 38 mm × 286 mm
1	1.89	2.33	2.68	1.26	1.56	1.79
1.5	1.67	2.06	2.37	1.21	1.50	1.72
2	1.51	1.87	2.14	1.15	1.38	1.63
2.5	1.39	1.72	1.97	1.09	1.24	1.54
3	1.29	1.60	1.83	1.04	1.12	1.47

 

A-7. Movement joints

The movement joints required for this product are illustrated in details in the following figure.