McMahon & Mann Consulting Engineering and Geology, P.C.

Elmwood Franklin School

Share |

Elmwood Franklin School
Project Details
Location: Buffalo, New York
Client: Elmwood Franklin School

The Elmwood Franklin School has been experiencing continuing settlement for several years. The School engaged MMCE to explore the causes for the settlement and to recommend remedial options to arrest the settlement. The settlement is limited to the portion of the building with a crawl space.

The cast-in-place first floor is supported by footings constructed on a clay subgrade. As shown in the above photograph, the subgrade has dried over time from actively ventilating the crawl space.

MMCE drilled borings inside the existing crawl space and outside of the school to collect samples for moisture content analysis. MMCE observed that the soil below the interior footings had dried to below the bottom of the borings. MMCE recommended that the school maintenance department hydrate the subgrade and have its surveyor establish a series of observation points on the structure to monitor the structure’s response to the subgrade hydration. The survey data show that the clay swelled after it hydrated and that the floor heaved and the cracks in the walls closed. 

Related Documents

Elmwood Franklin School Project Description - This document contains information on this project

Website by Luminus
© 2019 McMahon & Mann Consulting Engineering and Geology, P.C. All Rights Reserved.