Langan – Engineering & Environmental Services

505 Greenwich Street

New York, New York


Langan earned its reputation as a premier geotechnical consultant by managing hundreds of projects involving complex, technically challenging sites where highly specialized site preparation, foundations, and fast-track engineering solutions were required. We work closely with our clients and the design and construction team to engineer cost-effective geotechnical solutions appropriate for proposed structures and the governing site conditions. Services provided include:

• Sub-surface investigations
• Foundation design
• Seismic analysis and numerical modeling
• Earth retaining structures, excavation support, and underpinning design
• Ground improvement and soil/rock slope stabilization
• Tunneling, underground, and trenchless construction
• Waterfront design and marine engineering
• Temporary and permanent groundwater control
• Controlled inspection and instrumentation monitoring during construction
• Forensic studies and expert testimony

Featured Projects

Technical Excellence. Practical Experience. Client Responsiveness.
Copyright 2017 "Langan" encompasses "Langan Engineering, Environmental, Surveying and Landscape Architecture, D.P.C.,"
"Langan Engineering & Environmental Services, Inc.," "Langan International," "Langan Treadwell Rollo,"
and "Langan Engineering & Environmental Services, Inc., PC."    Call us: 1 (800) 3LANGAN | Email Us:
a FINE site