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Designing your vision, one detail at a time.
Welcome to
Orndorf & Associates, Inc.
Orndorf & Associates, Inc. (O&A) is a structural engineering and design firm with a strong presence in suburban Philadelphia, PA and a branch office in Greenville, DE. We are an award-winning, client-focused company that seamlessly combines the extensive expertise of a large engineering firm with the personalized service of a small firm.
Services
We offer a broad range of expertise in project types such as new construction, renovations, retrofits, adaptive reuse, and historic rehabilitation and preservation. Engineering feasibility studies, due-diligence surveys, constructability reviews, and peer review analyses are also part of our comprehensive services.
Our projects span across the country in sectors including residential (single and multi-family), commercial, industrial, self-storage, education, religious, healthcare, hospitality, and entertainment. We are dedicated to delivering exceptional, tailored solutions for our clients. Specialized areas of our practice include means and methods of construction, fall protection, and shoring of excavations. Our extensive portfolio features buildings of various sizes, scopes, and complexities, with construction values ranging from small-scale projects up to 100 million dollars.
Construction Documentation:
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Complete structural drawings packages (foundation plans, framing plans, and detail sheets)
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Comprehensive structural specifications
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Connection design and detailing
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Load calculations and analysis reports
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Material specifications and performance requirements
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Structural BIM modeling and coordination
Peer Review and Analysis:
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Third-party design verification
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Value engineering assessments
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Code compliance review
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Constructability analysis
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Alternate design solutions evaluation
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Structural system optimization
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Seismic and wind design review
Specialty Structural Design:
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Fall protection systems
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Excavation shoring and underpinning
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Temporary structures
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Equipment supports
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Blast-resistant design
Renovation and Adaptive Reuse:
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Historic preservation engineering
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Floor capacity analysis and reinforcement
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Seismic upgrades for existing buildings
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Structural modifications for repurposing historic and existing buildings
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Roof-level additions and vertical expansions
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Corrosion assessment and mitigation strategies
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Masonry wall stabilization and repointing specifications
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Facade retention systems
Delegated Design:
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Precast concrete design
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Steel connections design
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Cold-formed steel framing systems
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Architectural feature support systems
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Curtain wall and cladding attachments
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Temporary bracing and shoring design
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Specialty structural components
Philadelphia-Specific Engineering Services:
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Facade Inspection Ordinance compliance
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Make-safe plans for compromised structures
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Preconstruction surveys for adjacent properties
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Excavation Plan documentation
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Design Professional in Responsible Charge of Special Inspections services (DPRC-SI)
