Solution

Capitol Crossing, 200 Massachusetts Avenue

Washington, DC

Service: Building Enclosure Design

Market: Mixed-Use

Keywords: Construction Consulting, Curtain Wall, LEED Projects, Office, Roofing, Walls, Window Wall

Client

Balfour Beatty Construction D.C., LLC

Completion

2018

Capitol Crossing is a five-building development centered between Capital One Arena and Union Station. The mixed-use office buildings offer ground-level retail connected by landscaped plazas. SGH collaborated with the general contractor at 200 Massachusetts Avenue and provided building enclosure consulting services during the construction phase.

Scope | Solutions

SGH supported the general contractor as they implemented integrated construction details between unitized vertical glazing systems and adjacent building enclosure systems at complex transitions. Highlights of our work include the following:

Developed three-dimensional models depicting the intersection of storefront systems with opaque wall assemblies to depict the integration of various systems and the sequencing required to implement the details
Consulted on detailing for a pedestrian bridge where its low-sloped glazing roof transitions into a gutter system running along the curtain wall at 200 Massachusetts Avenue, and helped the contractor plan for the numerous trades involved in this complicated junction
Helped clarify the required construction sequencing associated with curtain wall transitions to metal panels and the main roof
Performed diagnostics related to temporary water management at the anchorage of the curtain wall to the main roof during construction
Participated in the curtain wall punch list process to assist the contractor in identifying areas where they could improve the as-built detailing

The general contractor also engaged SGH to provide building enclosure consulting services for the adjacent building at 250 Massachusetts Avenue.

Project Contact(s)

John Karras

Simpson Gumpertz & Heger

You are here