HomeMy WebLinkAboutUNION PARK - PDP230005 - SUBMITTAL DOCUMENTS - ROUND 2 - GEOTECHNICAL (SOILS) REPORT (2)
Soilogic, Inc.
3522 Draft Horse Court • Loveland, CO 80538 • (970) 535-6144
April 7, 2022
Landmark Homes
6341 Fairgrounds Avenue, Suite 100
Windsor, Colorado 80550
Attn: Mr. Andrew Quest
Re: Water-Soluble Sulfate Testing Report
Proposed Ziegler-Corbett Mixed-Use Development
Larimer County Parcel #’s 8732400010, 8732400009 and 8732000002
4105 Ziegler Road, Fort Collins, Colorado
Soilogic Project # 22-1062
Mr. Quest:
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 which will likely be in contact with structural
concrete. The sulfate concentrations measured in the samples varied from 0.0044 to 0.0079 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
04/07/2022 04/07/2022