[CCMC 13608-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as an augered steel pile in a foundation system in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

Code provision Solution type
4.2.3.10.(1) Where conditions are corrosive to steel, ...Acceptable
4.2.3.8.(1)(e) CSA G40.21, "Structural Quality Steel."Acceptable
4.2.4.1.(1) The design of foundations, excavations a ...Acceptable
9.4.1.1.(1)(c)(i) Part 9, orAcceptable

Ontario Building Code

Ruling No. 14-17-313 (13608-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 2014-10-27 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 is 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 information

Product name:

Pro Post Foundations Screw Piles

Product description

The product is an earth anchor constructed of helical-shaped circular steel blades that are welded to a steel shaft. The blades are constructed as a helix with a carefully controlled pitch.

Table 1. Pro Post Foundations Screw Piles physical characteristics
Outside diameter of anchor Wall thickness of anchor Diameter of helix blade Thickness of helix blade
48 mm 3.7 mm

200 mm

250 mm

8 mm
60 mm 3.9 mm

200 mm

250 mm

300 mm

350 mm

400 mm

450 mm

500 mm

600 mm

8 mm, 9.5 mm or 12.7 mm
73 mm 4.8 mm

250 mm

300 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

8 mm, 9.5 mm or 12.7 mm
89 mm 5.5 mm

250 mm

300 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

900 mm

8 mm, 9.5 mm or 12.7 mm
101 mm 5.7 mm

300 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

900 mm

8 mm, 9.5 mm or 12.7 mm
114 mm 6.0 mm

300 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

900 mm

8 mm, 9.5 mm or 12.7 mm
141 mm 6.6 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

900 mm

9.5 mm or 12.7 mm
168 mm 7.1 mm

350 mm

400 mm

450 mm

500 mm

600 mm

750 mm

900 mm

9.5 mm or 12.7 mm


The choice of anchor type and blade diameter is based on the bearing capacity of the soil and the load the auger-installed steel pile is designed to support. The central shaft is used to transmit torque during installation and to transfer axial loads to the helical plates. The foundation system comes with several other accessories, such as support plates (to adapt to the building structure), extension shafts and connectors.

The steel shaft, blades and accessories conform to CSA G40.21-13, “General Requirements for Rolled or Welded Structural Quality Steel/Structural Quality Steel,” 330 MPa. They have a galvanic coating that meets the requirements of CAN/CSA-G164-M92 (R2003), “Hot Dip Galvanizing of Irregularly Shaped Articles,” 610 g/m2.

The figure below shows a typical steel pile with a single helical blade.

Illustration of Pro Post Foundation Screw Piles.
Figure 1. Pro Post Foundations Screw Piles
  1. Shaft
  2. Helical blade

Manufacturing plant

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

  • Ascot Corner, Québec, Canada

  Conditions and limitations

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

  • The product under this evaluation is intended to be used as a foundation system to support the following types of construction:
    • Single storey residential buildings within the scope of Part 9 of NBC 2015;
    • Accessory buildings such as sheds, gazebos, sunrooms, carports, and decks/porches within the scope of Part 9 of NBC 2015.

    Other applications are beyond the scope of this evaluation, wherein a professional geotechnical engineer skilled in such design and licensed to practice under the appropriate provincial or territorial legislation must determine the pile capacity and other design parameters.

  • The product may be used as part of a foundation system to support various structures and must be installed according to the manufacturer’s current instructions.
  • The structural application of this product must be in strict accordance with the design analyses prepared for Pro Pieux Inc. by Labo S.M. Inc. and included in Reports No./Ref. F129038-001 and No./Ref. F1626403-001, which are dated May 2013 and March 2017, respectively.
  • When the product is installed in granular soil, silt, cohesive soil, such as clay, or in soil with granular material that does not exceed 200 mm in diameter, there is a direct relationship between the applied torque and the allowable compressive and tensile loads.
  • When the product is installed in a soil with granular material that exceeds 200 mm in diameter, the relationship between the applied torque and the allowable compressive and tensile loads is not as predictable. When it is installed in such soils, the allowable compressive and tensile loads must be confirmed by on-site load tests. These load tests are also required if the allowable loads are to be greater than those stated in the tables under Technical information section. The tests must be conducted under the direct supervision of a professional geotechnical engineer, skilled in such design and licensed to practise under the appropriate provincial or territorial legislation.
  • In all cases, a registered professional engineer skilled in such design and licensed to practise under the appropriate provincial or territorial legislation must determine the number and spacing of the product required to carry all the loads. A certificate attesting to the conformity of the installation and the allowable loads for the product must be provided by a certified installer. Following the manufacturer’s instructions, the anchors must be screwed into the ground to below the frost line using mechanized equipment. The anchor is to be rotated into the ground with sufficient applied downward pressure (crowd) to advance the anchor one pitch distance per revolution. The anchor must be advanced until the applied torque value attains a specified value. Extensions are added to the central shaft as needed. The applied loads may be tensile (uplift), or compressive (bearing). Helical anchors are rapidly installed in a wide variety of soil formations using a variety of readily available equipment. They are immediately ready for loading after installation.
  • Where conditions (soil and environmental) are determined to be corrosive to steel, protection of the steel shall be provided. The determination of the presence of corrosive conditions and the specification of the corrosion protection shall be carried out by a registered professional engineer licensed to practise under the appropriate provincial or territorial legislation. If the determination of the presence of corrosive conditions is not completed before installation, the product, including all its accessories, is required to be hot-dipped galvanized meeting the requirements of CAN/CSA-G164 (ASTM A123/A123M-17) with a minimum thickness of 610 g/m2, or another method that provides an equivalent level of protection and abrasion resistance deemed acceptable by the CCMC.
  • The installer of the proposed product must be certified by Pro Pieux Inc., use approved equipment, follow the manufacturer’s installation instructions and respect the conditions and limitations specified in this Report. Each installer must carry a certification card bearing their signature and photograph.
  • Each auger-installed steel pile must be identified with a label that contains the manufacturer’s identification and the phrase “CCMC 13608-R.”

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-316216.01-15ACCMC Technical Guide for Augered-Installed Steel Piles

Performance requirements

The proposed auger-installed steel piles were tested in accordance with the requirements of:

  • ASTM D 1143/D 1143M-07, “Standard Test Methods for Deep Foundations Under Static Axial Compressive Load,” and
  • ASTM D 3689/D 3689M-07, “Standard Test Methods for Deep Foundations Under Static Axial Tensile Load,”

Testing was conducted at four different sites. Two sites had granular soil and two sites had clay soil. A series of 30 tests was performed. The intent of the testing was to determine a correlation between the torque applied during installation and the allowable loads.

Table 2. Allowable compressive and tensile loadsTable footnote (1) for the proposed auger-installed pile in granular soilTable footnote (2) or siltTable footnote (3)
Applied torque Allowable loadTable footnote (4)
Compression Tension
N∙m (lbf) kN (lb) kN (lb)
678 500 16 3 600 10 2 250
1 017 750 22 4 950 15 3 375
1 356 1 000 28 6 300 20 4 500
1 695 1 250 34 7 650 25 5 625
2 034 1 500 40 9 000 30 6 750
2 373 1 750 46 10 350 35 7 875
2 712 2 000 52 11 700 38 8 550
3 051 2 250 58 13 050 40 9 000
3 390 2 500 64 14 400 42 9 450

 

Table 3. Allowable compressive and tensile loads for the proposed auger-installed pile in cohesive soilTable footnote (1)
Applied torque Allowable loadTable footnote (2)
CompressionTable footnote (3) TensionTable footnote (4)
N∙m (lbf) kN (lb) kN (lb)
678 500 9 2 025 3 675
1 017 750 15 3 375 8 1 800
1 356 1 000 21 4 725 12 2 700
1 695 1 250 27 6 075 16 3 600
2 034 1 500 32 7 200 20 4 500
2 373 1 750 38 8 550 25 5 625
2 712 2 000 44 9 900 29 6 525
3 051 2 250 50 11 250 33 7 425
3 390 2 500 55 12 375 37 8 325

 

Administrative information

Disclaimer

This evaluation is issued by the Canadian Construction Materials Centre (CCMC), a part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.

The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.

It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:

Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
Telephone: 613-993-6189
Fax: 613-952-0268

The NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). The 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.

Language

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In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

© 2021 Her Majesty the Queen in Right of Canada, as represented by the National Research Council of Canada.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.

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