Professional Structural Engineering Services

S3DA offers a unique combination of both structural and MEP design services, which means less headache and better prices for you.

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Design, drafting and calculations

We do it all

New constructions, additions, remodeling and improvements

We have a special focus on


New design, additions, remodels & ADU


Commercial, education, healthcare, industrial & residential

Distribution systems & HVAC upgrades


One-story or multi-story construction

Multi-lot developments

Multiple detached residences or high-density apartments


Design of non-building structures

Retaining wall & site structure design

Seismic retrofit of existing buildings & structures


New design & tenant improvements

Commercial kitchen and food service facilities

Office (one-story to medium-rise), retail centers, restaurants

Mixed-use building

Latest Structural Blogs

Tips, tricks and ideas

September 9, 2020
Office Design

Things to Consider When Planning an Office Design

Planning the design of an office space can be quite exciting. You want to make all your dreams of what an office should be like to come to life and ensure comfort and productivity in […]
September 4, 2020
metal building

How to Design a Metal Building: The Complete Guide

The world has changed seemingly overnight. Suddenly, many consumers and business owners have found a need for more space. A metal building is a cost-effective solution for meeting the need for more residential or commercial […]
September 1, 2020

What is a Duplex: Everything You Need to Know

No one would turn down living in their dream home free of charge, yet many fail to realize that investing in a duplex provides you with a one-of-a-kind opportunity to significantly lower your living expenses. […]
September 1, 2020
Home Remodeling

Home Remodeling You Can Do To Increase The Value Of Your Home

Remodeling your home is a great idea, especially if you are thinking about putting your home up for sale through a real estate brokerage. Home improvement projects are a great way to drive up the […]
August 28, 2020
Commercial and Industrial Buildings

Structural Design Challenges for Commercial and Industrial Buildings During the Pandemic

In a New Yorker article, Kyle Chayka details the architectural features of the Paimio Sanitorium, a facility built specifically to combat tuberculosis, in which he asserts, “each element of the Paimio was conceived to promote […]
August 21, 2020
MEP and structural design

How merging MEP and Structural design can cut costs for commercial projects in half

There are numerous types of commercial buildings, but we have to mention the most important ones: multifamily apartments, office, retail, hospitality, industrial, and R&D. The main thing that you need to consider when talking about […]
August 14, 2020
Your Home

How to Get a Higher Appraisal on Your Home

A professional home appraisal is an important part of not only selling a home but also refinancing it. The impartial opinion of your home’s current worth provides prospective buyers and lenders with a clear insight […]
August 12, 2020
Building Regulations

Top 5 Things You Should Know About Building Regulations

Building regulations come into play whenever new construction begins, an existing structure is rebuilt, or even when renovations are undertaken (sometimes with projects as small as replacing fencing or doors). If you’ve applied for permits […]
August 5, 2020
Essential Components of Any Restaurant

3 Essential Components of Any Restaurant’s Construction

When constructing a kitchen to serve as the engine room of your newly-built restaurant, it’s important to implement the most necessary features ahead of time. This means taking into account the various investments you need […]


here are some of our projects

Structural design for Sunshine Express Carwash in Redding, CA
Blue Wave mixed-use hotel and apartment complex for Imperial Beach
Office remodelling for the Mission Towers in Santa Clara, CA
Conceptual structural and MEP design and full layouts for Single Family home
Conversion of duplex apartment building into a single family home
Marcelli residence in Charleston, SC
Ambulatory Surgery Center in Clayton, NC
The Oxford Restaurant in Lodi, CA, Tenant Improvement
Congregate living health facility in Inglewood, CA

Turnkey structural engineering solutions

We work with many types of structural systems including, wood and timber frames, structural insulated panels(SIP), insulated concrete forms (ICF), reinforced concrete and CMU block structures, custom steel and metal buildings as well as composite retrofit systems for building alterations. We do the structural design of your project from feasibility and system selection to detailed construction documents quickly and efficiently. This approach enables us to incorporate structural systems with building design while saving our clients time and money.

Engineered wood frame, Light Wood Frame, light gauge steel (cold form steel framing), steel frame, CMU and Concrete Buildings

Foundations comprising, Mat foundation, Conventional Pad & Footing System, Post-tensioned Slab on Grade & Cassion

Decks and Parking Structures

Retaining Walls

Green Roofs Structures

Seismic Evaluation and Retrofits

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