HomeMy WebLinkAboutHEARTSIDE HILL RESIDENTIAL DEVELOPMENT - PDP210020 - SUBMITTAL DOCUMENTS - ROUND 1 - GEOTECHNICAL (SOILS) REPORT
Soilogic, Inc.
3522 Draft Horse Court • Loveland, CO 80538 • (970) 535-6144
August 13, 2021
Highland Development Services, Inc.
6355 Fairgrounds Avenue, Suite 100
Windsor, Colorado 80550
Attn: Mr. Jason Claeys, P.E.
Re: Water-Soluble Sulfate Testing Report
Proposed Residential Development
Lots 1 and 2, Heart of the Rockies Second Subdivision
6501 Brittany Street, Fort Collins, Colorado
Soilogic # 21-1239
Mr. Claeys:
Soilogic Inc. (Soilogic) has received results of subcontracted water-soluble sulfate (WSS) testing
completed for the referenced project. Results of the completed laboratory tests and associated
geotechnical engineering recommendations are included with this report.
Water-soluble sulfates (WSS) tests were completed by a subcontracted laboratory on two (2)
representative samples of the subgrade soils/bedrock which will likely be in contact with
structural concrete. The sulfate concentrations measured in the samples varied from 0.0385 to
0.0611 percent by mass in soil. ACI rates the measured concentrations as being a negligible risk
of concrete sulfate attack; therefore, Type I cement should be suitable for site concrete. As an
added precaution, Type I/II Portland cement could be considered for additional sulfate resistance
of concrete in contact with the subgrade soils. Foundation concrete should be designed in
accordance with the provisions of the ACI Design Manual, Section 318, Chapter 4.
We appreciate the opportunity to be of service to you on this project. If you have any questions
concerning the enclosed information or if we can be of further assistance to you in any way,
please do not hesitate to contact us.
Very Truly Yours,
Soilogic, Inc. Reviewed by:
Darrel DiCarlo, P.E. Alec Kaljian, P.E.
Senior Project Engineer Project Engineer
08/13/2021
08/13/2021