Evaluation Report CCMC 06292-R
Hambro Floor-Ceiling Assembly

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MASTERFORMAT:
05 31 13.01
Evaluation issued:
1984-02-25
Re-evaluated:
2013-05-14
Revised:
Never
Re-evaluation due:
2014-05-05
Re-evaluation in progress
No


1. Opinion

It is the opinion of the Canadian Construction Materials Centre (CCMC) that “Hambro Floor-Ceiling Assembly”, when used as a fire- and sound-rated floor-ceiling assembly in accordance with the conditions and limitations stated in Section 3 of this Report, complies with the National Building Code 2010:

  • Clause 1.2.1.1.(1)(a), Division A, using the following acceptable solutions from Division B:
    • Subsection 3.1.7. Fire-Resistance Ratings
    • Subsection 3.1.8. Fire Separations and Closures
    • Subsection 3.1.9. Penetrations in Fire Separations and Fire-Rated Assemblies
    • Subsection 9.10.8. Fire Resistance and Combustibility in Relation to Occupancy, Height and Supported Elements
    • Subsection 9.11.2. Required Sound Control Locations (Airborne Sound)

This opinion is based on CCMC's evaluation of the technical evidence in Section 4 provided by the Report Holder.

2. 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 65 mm thick and minimally reinforced with an embedded 4.2 mm diameter wire mesh that is 150 mm x 150 mm.  The minimum strength of the concrete at 28 days must be at least 20 MPa.

The steel joists are Hambro D500/D510 (H or LH Series) composite joists spaced not more than 1260 mm on centre. They may be spaced up to 1830 mm when they are adjacent to a parallel wall.  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 150 mm on centre.  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, please refer to 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.  See Figures 1 and 2.

3. Conditions and Limitations

CCMC's compliance opinion in Section 1 is bound by the “Hambro Floor-Ceiling Assembly” 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-S101-07, "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 must be determined in accordance with ASTM E 90‑04, "Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements," or with ASTM E 336-05, "Measurement of Airborne Sound Attenuation between Rooms in Buildings."
  • 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 practice under the appropriate provincial or territorial legislation.
  • The product may be used in 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 Subsections 3.1.8. and 3.1.9. of Division B of the NBC 2010.
  • The product drawings and documents related to span and spacing must bear the authorized professional seal and signature of an engineer skilled in structural design and licensed to practice under the appropriate provincial or territorial legislation.

4. Technical Evidence

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

4.1 General

Fire endurance testing was conducted by the Underwriters' Laboratories of Canada; sound transmission class ratings were determined by laboratories recognized by CCMC and from results obtained in the field.

Table 4.1.1 Fire-Resistance Rating and Sound Transmission Classification of the "Hambro Floor-Ceiling Assembly" designated by ULC as Design No. I506 (Unrestrained Assembly Rating)
Design I506Concrete Slab Thickness (mm)Fire-Resistance RatingTable 4.1.1 footnote 1 (h)Field Sound Transmission Class (FSTC)
H Series joistsTable 4.1.1 footnote 2 65 2 53
90 3 53
LH Series joists 75 2 53
120 3 53
Notes to Table 4.1.1:
Footnote 1

All installations must be carried out in strict accordance with the appropriate listing in the "Fire Resistance Directory" published by Underwriters' Laboratories of Canada.

Return to table 4.1.1 footnote 1 referrer

Footnote 2

H Series joists are equivalent to D500 and D510 products.

Return to table 4.1.1 footnote 2 referrer

Table 4.1.2 Fire-Resistance Rating and Sound Transmission Classification of the "Hambro Floor-Ceiling Assembly" designated by ULC as Design No. I518 (Restrained and Unrestrained Assembly Rating)
Design I518Concrete Slab Thickness (mm)Fire-Resistance RatingTable 4.1.2 footnote 1 (h)Field Sound Transmission Class (FSTC)
H Series joistsTable 4.1.2 footnote 2 65 1.5 53
70 2 53
75 2 53
LH Series joists 75 1.5 53
80 2 53
85 2 53
Notes to Table 4.1.2:
Footnote 1

All installations must be carried out in strict accordance with the appropriate listing in the "Fire Resistance Directory" published by Underwriters' Laboratories of Canada.

Return to table 4.1.2 footnote 1 referrer

Footnote 2

H Series joists are equivalent to D500 and D510 products.

Return to table 4.1.2 footnote 2 referrer

Table 4.1.3 Fire-Resistance Rating and Sound Transmission Classification of the "Hambro Floor-Ceiling Assembly" designated by ULC as Design No. I800 (Restrained and Unrestrained Assembly Rating)
Restrained Assembly RatingTable 4.1.3 footnote 1 (h)Unrestrained Assembly RatingTable 4.1.3 footnote 1 (h)Thickness of Sprayed Fibre on D510 Joist (mm)Thickness of Sprayed Fibre on D500 Joist (mm)Concrete Slab Thickness (mm)Field Sound Transmission Class (FSTC)
2 – 32 29 63 53
1.5 – 32 29 70 53
– 1.5 – 38 76 53
1 1 32 29 89 53
Note to Table 4.1.3:
Footnote 1

All installations must be carried out in strict accordance with the appropriate listing in the "Fire Resistance Directory" published by Underwriters' Laboratories of Canada.

Return to table 4.1.3 footnote 1 referrer

Table 4.1.4 Fire-Resistance Rating and Sound Transmission Classification of the "Hambro Floor-Ceiling Assembly" designated by UL as cUL Design No. G524 (Restrained and Unrestrained Assembly Rating)
DesignConcrete Slab Thickness (mm)Height of Truss (mm)Fire-Resistance RatingTable 4.1.4 footnote 1 (h)Field Sound Transmission Class (FSTC)
D500 Truss 65 150 1 and 1.5 53
70 200 1.5 and 2 53
75 150 2 53
65 250 2 53
95 200 3 53
90 250 3 53
D510 Truss 80 200 1 and 1.5 53
70 200 1.5 53
70 200 2 53
Notes to Table 4.1.4:
Footnote 1

All installations must be carried out in strict accordance with the appropriate listing in the "Fire Resistance Directory" published by Underwriters' Laboratories of Canada and/or Underwriters' Laboratories Inc.

Return to table 4.1.4 footnote 1 referrer

Figure 1
Figure 1. Example of "Hambro Floor-Ceiling Assembly:"
  1. wire fabric
  2. steel joist
  3. concrete
  4. air duct
  5. furring channel
  6. gypsum wallboard
Figure 2
Figure 2. Example of "Hambro Floor-Ceiling Assembly:"
  1. steel joist D510
  2. wire fabric
  3. concrete
  4. air duct
  5. furring channel
  6. gypsum wallboard

Note to Figures 1 and 2:

Refer to ULC drawings for complete details regarding fire-rated systems.

Report Holder

Hambro
Une division du Groupe Canam Inc.
270, chemin du Tremblay
Boucherville, QC J4B 5X9

Telephone:
450-641-4000
Fax:
450-641-4001

Plant(s)

Beauce, QC

Disclaimer

This Report is issued by the Canadian Construction Materials Centre, a program of NRC Construction at the National Research Council of Canada. The Report must be read in the context of the entire CCMC Registry of Product Evaluations, including, without limitation, the introduction therein which sets out important information concerning the interpretation and use of CCMC Evaluation Reports.

Readers must confirm that the Report is current and has not been withdrawn or superseded by a later issue. Please refer to the CCMC web site, or contact the Canadian Construction Materials Centre, NRC Construction, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6. Telephone (613) 993-6189. Fax (613) 952-0268.

NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this Report are directed to those who have the appropriate degree of experience to use and apply its contents. This Report is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the National Research Council of Canada (NRC) provides no endorsement for any evaluated material, product, system or service described herein. NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this Report. NRC is not undertaking to render professional or other services on behalf of any person or entity nor to perform any duty owed by any person or entity to another person or entity.