MEP Design for Twin ADUs in Long Beach
S3DA Design recently provided comprehensive MEP engineering services for a new residential development in Long Beach, CA, featuring a single-family residence and two modern Accessory Dwelling Units (ADUs). Spanning 1,150 SF each, these ADUs represent a growing trend in California’s urban density solutions, requiring precise engineering to maximize space and efficiency.
S3DA’s Scope Our team delivered a full suite of MEP services to ensure the residence and ADUs were functional, comfortable, and fully compliant with local regulations:
- Mechanical Design: Comprehensive HVAC distribution utilizing rigid ductwork, detailed heat load reports, and mechanical schedules for optimal climate control.
- Electrical Design: Complete lighting and power floor plans, single-line diagrams (SLD), and panel schedules to ensure a robust and safe electrical infrastructure.
- Plumbing Design: Detailed domestic water, sanitary drainage, and natural gas systems, including 2D riser diagrams and isometric riser diagrams for the gas network.
Key Challenges & Solutions Designing for high-density residential lots requires a delicate balance between high-performance systems and limited spatial footprints. S3DA utilized advanced engineering calculations to ensure the HVAC and plumbing systems were integrated seamlessly into the 1,150 SF ADU structures without compromising living space. By providing a “Single Source of Responsibility” for all MEP disciplines, we eliminated the coordination gaps that often lead to on-site clashes, ensuring that the mechanical, electrical, and plumbing systems worked in perfect harmony.
The Result The project resulted in a permit-ready set of construction documents that strictly adhered to California’s rigorous building codes and Title 24 energy standards. Our efficient design process provided the client with a cost-effective path to construction, delivering sustainable and comfortable living spaces for the Long Beach community.
