Emerald Bay Proposed Addition & Remodeling
Project Details
This project involves the structural design and engineering for a proposed addition and remodeling of an existing two-story single-family dwelling with a basement. The comprehensive scope required Type V construction solutions for the entire structural assembly, integrating wood-framing with strategic structural steel components. The primary structure utilizes high-strength Douglas Fir Larch (No. 1 and No. 2) for beams, joists, and rafters, alongside specialized engineered wood products such as 24F-V4 DF Glulam and 2.0E Parallam PSL beams. Additionally, the design incorporates W-shape steel columns (W6x15 A992) and beams (W14x30 A992) to provide enhanced structural support and stability. The design process included a rigorous structural analysis to ensure the residence could safely withstand environmental loads in a coastal environment. The structural elements were engineered in accordance with the 2022 California Building Code (CBC), 2022 California Residential Code (CRC), and ASCE 7-16 provisions. Special attention was given to lateral load resistance and seismic stability, with the structure designed for Seismic Design Category D and wind speeds of 95 MPH (Exposure D). The foundation system features a 6-inch thick reinforced concrete two-way slab (4,000 PSI) supported by 18-inch diameter concrete piles designed for a minimum 10-foot embedment into bedrock, all interconnected by a comprehensive network of reinforced concrete grade beams.
Role
Structural Engineer/Designer
Services Provided
The scope of services includes the preparation of comprehensive structural calculations and structural drawings for the proposed structure. Structural calculations shall include complete loading analyses for wind, seismic, dead, and live loads, in accordance with the applicable building codes and project site conditions. The work shall encompass the structural analysis and design of all required structural components, including roof rafters with associated roof and subfloor diaphragm sheathings; shear walls including stud sizes and spacings, wall sheathings, and nailing schedules; and load-bearing walls including stud sizes and spacings. The design will also include beam supports for large open spaces, utilizing either wood or steel beams depending on the structural loading requirements, as well as lintel beams and headers to support wall openings such as doors and windows. Additional design components shall include concrete slab-on-grade systems, wall footings supporting shear and load-bearing walls, and pad footings supporting columns carrying beams, ensuring that all structural systems provide a continuous and code-compliant load path from the roof and floor systems down to the supporting foundation elements.
Structural drawings include a Foundation Plan identifying the layout and sizing of footings and foundation components; Floor Framing Plans showing framing layouts and structural member sizes; and Roof Framing Plans indicating rafters, beams, and diaphragm components. The drawing set will also include shear wall layout plans illustrating the lateral force-resisting system, as well as structural building section views, including both structural cross-sections and longitudinal sections, to clearly communicate framing relationships and vertical load paths. In addition, the structural documents shall include typical structural details, typical construction details, general structural notes, and technical specifications necessary for permitting, coordination, and construction. All deliverables shall be prepared to clearly convey the design intent, facilitate plan review, and support accurate field implementation while ensuring compliance with applicable codes and engineering standards.