extensive damage from vehicle impact

“I was relieved. Either way, I would have had to fix it. But they showed me the pictures, explained everything, and said no action was needed.”
- Deb Eisenlauer, Homeowner

The Situation

In November 2025, StructSolve Engineering was contacted following a vehicle impact at a single-family residence. The home, approximately nine years old, sustained damage to the southeastern wall of the structure. While temporary shoring had been installed to stabilize a displaced steel beam, no permanent corrective measures had yet been undertaken.

The homeowner sought a comprehensive engineering evaluation to determine the extent of structural damage and to understand what repairs were necessary to restore the home’s integrity. Given the localized nature of the event, the primary concern was whether the impact had compromised critical load-bearing elements beyond what was immediately visible.

What We Observed

The vehicle struck the southeastern corner of the garage area, damaging the downspout, exterior siding, and an adjacent air-conditioning condenser. The condenser was displaced from its mount and fractured the siding as it shifted.

More critically, a significant vertical fracture was identified at the interface between the garage foundation wall and the southeastern foundation wall of the main dwelling. Based on crack orientation and displacement patterns, the fracture likely propagated inward at approximately a 45-degree angle between the intersecting wall segments. Interior finishes prevented direct confirmation of the full crack path.

The window well assembly sustained extensive structural damage. All three wall segments exhibited distress, with the outer and western walls deflecting inward. Large portions of the outer and eastern walls were missing, exposing reinforcing steel. The window well had been displaced laterally inward and will require full replacement. The basement window within the well was shattered, and fractures were observed in the surrounding concrete.

At the framing level above the impact, the sill plate of the stud wall was cracked and will require replacement.

Inside the basement, the foundation wall at the impact location exhibited significant inward deformation. Multiple stress fractures radiated from the point of impact, with additional diagonal cracking visible in the adjacent drywall. A substantial horizontal fracture was observed north of the steel I-beam, extending approximately ten feet along the wall from the joint at the garage foundation interface.

The steel I-beam, which provides structural support to the floor system above, had been displaced approximately seven inches inward, penetrating the drywall in the stairwell. The movement also resulted in cracking of both top plate members in the wall assembly above.

No distress was observed in the adjacent garage foundation wall at the corner, suggesting the primary force transfer occurred through the southeastern wall of the main structure.

The floor joists above could not be directly observed due to ceiling finishes. Removal of these finishes will be required both to properly shore the floor system during beam realignment and to confirm that no secondary damage occurred to the joists.

The Outcome

Because the damage resulted from a concentrated lateral impact, corrective measures were made to address both the compromised foundation wall and the displaced structural steel beam.

The southeastern foundation wall required full replacement. The full extent of reconstruction would be determined following the removal of basement finishes to allow a comprehensive assessment of hidden conditions. The damaged sill plate above this wall also requires repair or replacement. The window well was also recommended to be replaced concurrently with the wall reconstruction to ensure proper integration and long-term performance.

The displaced steel I-beam must be returned to its proper bearing position. This process will involve:

Removal of basement ceiling finishes.

Installation of temporary shoring to support structural loads typically carried by the beam.

Use of hydraulic jacks to elevate the shoring system and relieve the load from the beam.

Mechanical repositioning of the beam using appropriate equipment, such as a horizontal bottle jack or cable puller.

Once realigned, the cracked top plate members can be compressed back into position as a unified assembly. Structural epoxy may then be applied to restore continuity and bond integrity.

Lasting Value

Based on the conditions observed during this engineering evaluation, the structural integrity of the residence is compromised. The reinforced concrete foundation wall at the southeastern impact location must be replaced, and the displaced steel I-beam must be repositioned to restore proper load transfer within the structure.

This case underscores the importance of professional engineering assessment following impact events. While some damage is immediately visible, structural consequences often extend beyond surface finishes. By clearly identifying the extent of compromise and outlining a structured path to repair, StructSolve provides homeowners with the clarity necessary to restore safety, stability, and long-term performance.

Project Details

Location: West Des Moines, Iowa
Client: Homeowner
Service: Observation and Report
Scope: evaluating the extent of the damage of a vehicle impacting the side of the house