Written by Gary L. Seider, PE on November 3, 2022
The International Residential Code (IRC) Provisions in ESR-2794 include CHANCE® helical pile foundation products. The following is the benefit for our customers:
4.0 DESIGN AND INSTALLATION
Section 4.1.1 General: Under the IRC, a geotechnical investigation is not required if the helical pile foundation system and devices described in the evaluation report are being installed to support IRC structures defined in Section 2.2 of this Report and,
The soil capacity of the helical pile system is established in accordance with Equation 5 in Section 4.1.5 of this Report.
Qult = KtT (Equation 3)
Qall = 0.4 Qult (Equation 5)
4.3.2 IRC: Continuous special inspection of helical foundation system and devices installed under the provisions of the IRC defined in this report is not required.
Basically, if your customers are installing new construction or remedial repair foundations for light-frame residential work, then it’s not necessary to have a Geotech Report; nor is it necessary to have continuous special inspection. This should help contractors get permits/approvals for non-commercial jobs with fewer piles.
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