Siefert Associates, LLC

Determining and designing the most efficient means and methods for large-scale construction projects, with high-quality working drawings, supporting calculations, and advanced modeling tailored to each project's schedule, budget, unique site conditions, and safe field operations.

• Temporary Support Systems
• Staged Construction Analysis
• Temporary Bridges and Trestles
• Structural Lifting

  Bridge jacking and bearing replacement.

• Concrete Formwork and Access Platforms
• Connection Design
• Debris Shields

Design and analysis of custom structures and temporary works using state-of-the-art structural modeling and CAD tools, with careful consideration of applied loads, internal and reaction forces, and deflections against site-specific constraints.

Planning and engineering detailed demolition procedures that account for all intermediate stages of dismantling, equipment loads imposed, and temporary support and bracing requirements for structures exposed to weathering and deterioration.

• Bridge Dismantling
• Building Dismantling
• Power Plant Decommissioning

Comprehensive staged erection analyses, temporary support and bracing design, elevation control provisions, and collaboration with erectors and fabricators to ensure predictable field execution.

• Bridge Erection
• Building Erection

Geotechnical services supporting both temporary and permanent structures, using the latest geotechnical software to develop best-fit solutions based on accurate design parameters and collaboration with clients on preferred means and methods.

• Support of Excavation

  Sheet piling, soldier piling, soil anchors, and shotcrete systems.

• Foundation Engineering

  Pile foundations, shallow foundations, and cofferdams.

• Slope Stability Analysis
• Waterfront Structures
• Retaining Walls

  GRES, concrete, and masonry retaining wall systems.