Excavation Support Design

GZA provides excavation support design solutions for complex underground construction projects, helping contractors, owners, and developers address challenging site conditions in urban, transportation, utility, marine, and infrastructure environments. Our engineers develop practical, constructible support systems tailored to project-specific geotechnical and structural requirements.

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From shallow utility excavations to deep, multi-level urban excavations and challenging cofferdam for bridge construction, GZA designs temporary and permanent support of excavation systems for a wide range of construction applications. Our multidisciplinary team combines geotechnical engineering, structural analysis, and construction experience to develop solutions that address site constraints, adjacent infrastructure, groundwater conditions, and project performance requirements.

GZA utilizes advanced analytical methods, numerical modeling, and engineering evaluation tools to develop excavation support systems ranging from simple cantilever walls to complex internally braced and tieback-supported excavations. Our services often integrate instrumentation and monitoring programs, groundwater controls, construction engineering, and field support to provide comprehensive solutions throughout design and construction.

Backed by a heavily experienced geostructural design team, GZA has supported excavation projects across transportation, building, marine, utility, and infrastructure markets throughout the United States. Refer to the featured projects below

Expertise

  • Internally Braced Excavations
  • Tieback Supported Excavations
  • Tierod & Deadmen Supported Excavations
  • Soldier Pile and Lagging Walls
  • Secant and Tangent Pile Walls
  • Soil-Mix Walls
  • Sheet Pile Walls
  • Slurry Walls
  • Soil Nail Wall
  • Retaining Walls
  • Cofferdams

Related Focus Areas

Geotechnical Instrumentation & Monitoring

GZA delivers comprehensive instrumentation and monitoring programs that combine field expertise with advanced technology. Services include geotechnical, structural, environmental, and remote monitoring systems supported by cloud-based dashboards, and automated alerts, automated reporting.

Construction Engineering

GZA’s Construction Engineers know structures. Heavy Civil, industrial, commercial, residential, waterfront, temporary, old or new construction – we understand how structures go together, how to temporarily support them, how to put them up, and how to take them down, in a practical, economical way...

Deep Foundation Testing

GZA has been in performing non-destructive testing on both large and small deep foundations projects, both on land and offshore, since the 1960’s.

Environmental Monitoring

During construction, observation of air quality, noise, and vibration can reduce the risk of 'cease and desist' orders, support worker health and safety programs, and reduce the risk of damage to adjacent structures.

Groundwater Control

Dewatering systems are often an essential component of a project's design, especially in congested urban areas which could have a significant impact on the soil condition at adjacent properties.

Pre- and Post-Construction Structural Condition Surveys

Surveys are a powerful tool to limit risk and liability when performed prior to construction activities. GZA's condition survey services combine engineering expertise with advanced reality capture technologies to document existing conditions before, during, and after construction. Using...

Pre-Bid & Value Engineering

GZA assists contractors with creative approaches to construction, strengthening your bid by providing economical and constructible solutions.

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Rasim Tumer has been with GZA since December 2006. Prior to joining GZA, he worked as a Structural/GeoStructural Engineer for…

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Rasim Tumer

Principal

781-278-5884

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