S3DA Design were engaged to provide complete MEP and Structural engineering design services for a major home renovation project in San Marino, California. The project involves a two-phase addition and upgrade to an existing residence, combining structural strengthening with new mechanical, electrical, and plumbing systems to support modern living standards and future expansion.
Scope of Work
Phase 1 — Ground Floor Addition
Our structural team is preparing detailed calculations and drawings for the new ground-floor addition, designed to accommodate future second-floor loads. The work includes:
- Comprehensive loading analyses (wind, seismic, dead, and live loads)
- Structural design of new foundations, shear and load-bearing walls, posts, headers, and roof tie-ins
- Diaphragm and collector continuity verification at connection points
- Preparation of foundation, shear wall, and roof framing plans with detailed sections and specifications
Phase 2 — Second Floor Addition
The second phase will add a complete upper level, requiring advanced coordination between disciplines. Deliverables include:
- Structural design for new second-floor framing, shear walls, beams, columns, and roof structure
- Load transfer analysis to ensure seamless integration with the strengthened first floor
- Full plan set covering framing, shear wall layout, roof framing, and building sections
S3DA Design’s integrated MEP and Structural approach ensures the project meets California building codes while enhancing efficiency, safety, and long-term adaptability.
