PURSUING LEED GOLD CERTIFICATION

IMEG provided structural engineering design for On Vine, a new, $450 million mixed-used project in Hollywood developed by Kilroy Realty Corp. and designed in collaboration with Shimoda Design Group, House & Robertson Architects, and GBD Architects.

Formerly called Academy Square on Vine, the project at 1341 North Vine Street has a more than 150,000-sf footprint (the size of an entire city block) and more than 1 million-sf of total area. The project comprises four mixed-use spaces along with a 20-story residential tower, all of which sit over a three-story underground concrete podium structure.

The mixed-use spaces include two multi-story office buildings, a 165-seat high-performance theater, and a single-story retail space. The four-story commercial/retail buildings have approximately 260,000-sf of creative office space and another 20,000-sf of retail space, all of which has been leased by Netflix.

The 20-story, 193-unit residential tower has a footprint of 12,000-sf and 216,000-sf of total space. Type I, poured-in-place concrete construction with post-tensioned flat slabs and concrete shear walls were utilized for the parking garage, podium level, office buildings, and residential tower, while the retail buildings are a combination of steel framing and masonry construction.

The project had an aggressive schedule and required significant coordination between all disciplines.

With the lease of the space by Netflix, significant changes to the project were required, including the additions of three bridges between the main office buildings, new stair structures both internally and externally to the buildings, and the renovation/modification of one retail/office building into the acoustically isolated high-performance theater.

The theater includes a steel-framed structure isolated from the concrete podium and parking structure below as well as the steel-framed main structure of the theater surrounding it. This isolated structure sits above more than 40 neoprene isolation pads with steel connection seats that allow movement and deflection in six directions while also providing lateral restraint in a seismic event. This required careful coordination with the owner, tenant, architect, acoustic engineer, and MEP teams to maintain the required isolation above the concrete podium building and ensure no short circuits in the acoustic/vibration system were present. The result is a world-class performance theater.