Haag's Accredited Testing Lab is Open, Accepting Assignments Now

Haag's Lab and Offices Relocated. Our expanded Lab is open now!

Haag Engineers Establish Scholarship for Engineering Students

Haag Engineers Terry Taylor and Stoney Kirkpatrick established the "John C. Westkaemper Scholarship in Aero...

Haag Welcomes David Ey, P.E., new Civil Engineer in Chicago!

Haag Welcomes David Ey, P.E., new Civil Engineer in Chicago!

Back to Case Studies

Featured Projects

Sudden Soil Dropout Near Residence

Sudden Soil Dropout Near Residence

Haag was asked to conduct a residential structural damage investigation and evaluation related to ground subsidence claim

A homeowner was concerned after a 6-foot diameter, 3-1/2-foot-deep hole (dropout) opened up in the back yard at the property line. Sinkholes are common in the Tampa Bay area. At the time of the evaluation, Haag Engineers observed that a stormwater catch basin was located at the street in the vicinity of the property line. Further investigation revealed that a concrete stormwater pipe ran under the side property line and that it lay directly beneath the dropout.  Soil had been washing into a hole in the pipe creating a void that eventually collapsed. The liability for correcting the problem shifted to the municipal stormwater utility.