![]() Old Structures Engineering Old Structures is one of the leading consultancies in structural engineering for historic and old buildings. | ![]() Donan Engineering Donan consistently provides conclusive, unbiased and accurate forensic investigation services with the fastest turnaround time and best customer service in the industry. | ![]() YU & Associates YU & Associates (YU) is an award-winning, diversified consulting engineering firm providing site/civil, planning, geotechnical and environmental services. | |
Founding Date | Founding Date 1992 | Founding Date 1947 | Founding Date 1992 |
Type | Type Private | Type Private | Type Private |
Tags | |||
Locations | Locations New York, US HQ New York, US | Locations Louisville, US HQ Simpsonville, US Cincinnati, US | Locations Elmwood Park, US HQ New York, US |
Employees | Employees 1515% increase | Employees 269 | Employees 1442% decrease |

Donan consistently provides conclusive, unbiased and accurate forensic investigation services with the fastest turnaround time and best customer service in the industry.
View company
YU & Associates (YU) is an award-winning, diversified consulting engineering firm providing site/civil, planning, geotechnical and environmental services.
View company