LOISOS + UBBELOHDE : Architecture . Energy



Loisos + Ubbelohde (L+U) specializes in high performance and sustainable buildings. We are recognized for expertise in advanced daylight simulation, low-energy electric lighting design, and zero-energy/zero-carbon projects. L+U projects have received 48 AIA awards, including four AIA/COTE Top Ten Green Project Awards. Twenty two projects are LEED certified including 11 Platinum Certifications and six buildings that are Zero-Net-Energy. We are members of the AIA, USGBC, ASHRAE, ASES and IESNA, with certified Building Energy Modeling Professionals and NCQLP certified
lighting designers on staff.

Our approach to lighting and daylighting is unique in the industry and involves a balancing of aesthetic intentions, occupant experience, and technical understanding. For a sophisticated building design, guidelines and rules of thumb are irrelevant and advanced simulation tools are critical. For electric lighting, daylighting and shading analysis we use RADIANCE software, a research grade light simulation software based on the physics of light and material properties. When required for advanced glazing materials and applications we can also produce physical models and test them at our light lab in Alameda or at the UC Berkeley artificial sky simulator.

Prospective and parametric modeling is an integral part of our design process. In working with the designer, what we seek to understand and reveal what makes the building perform in a particular way, what can be done to make it more comfortable and more in tune with its surroundings. In other words, how can it be designed to provide exciting and comfortable space effortlessly? We use modeling as one of the tools to answer this question. Typically in green building practice, modeling is used to evaluate whether a design meets a selected standard or code. In addition, our models are designed to answer specific questions about the design while the design is still in flux.

In the context of this kind of evolving design collaboration, our practice also situates itself at the leading edge of lighting technology. For over three decades the firm's principals have been at the forefront of university and industry-sponsored research, assisting in the development and validation of simulation software and applying it in professional practice. This work enables the firm to bring cutting edge research to bear while understanding the real-world economic and regulatory constraints of each project.