Onyx Structural and Design LLC, provides structural engineering and technical services to the greater DC region and beyond. Whether there is a need for permit drawings, peer reviews or software support, Onyx has the tools to provide a complete solution to all your needs. Project types range from single family home renovation to justice facilities: from wood-framed structures to post-tensioned concrete towers. Onyx also excels in providing high-end BIM models for improved coordination with other disciplines and for deliverables. Founded on the principles of giving our clients final products that meet and exceed their expectations, we always strive to produce quality and complete services to ensure our clients the products they deserve.