The “bathtub” slurry wall at the World Trade Center (WTC) site survived when the WTC towers collapsed in 2001, making it a symbol of endurance. WTC site redevelopers wanted a section of the wall incorporated and exposed within the...
As part of their campus master plan, the medical center wanted to update their existing hospital to meet the latest in patient care standards. The new Robert E. and Holly D. Miller Building is a seven-story, 180,000 sq ft building with 128 single...
With the Sister Caritas Cancer Center, Mercy Medical Center expanded oncology services and consolidated their programs into one comprehensive space. SGH designed the structure for the two-story horizontal expansion.
With bedrock more than 200 ft below street level, the fifty-eight-story Millennium Tower, like most downtown high-rises, is founded on piles driven through soft, compressible clay soils deposited by the San Francisco Bay and extending into a...
To help them construct utility trenches, Bond Brothers needed standard shoring designs for temporary excavation support systems. SGH developed a library of standardized designs for use at project locations with varying site conditions.
The retail development at 706 Madison Avenue is five above-grade and two below-grade stories of new construction surrounding an existing landmark building. The project included preserving the two street-facing facades and a complete interior...
Constructed in 1929, historic Krieger Hall sits on the Keyser Quadrangle at Johns Hopkins University (JHU). It connects to Ames Hall through a vestibule and colonnade walkway to the west and adjoins an elevated plaza over the library to the east...
Through a combination of public and private investments, the 300-acre Brooklyn Navy Yard will be reinvented as a modern industrial park. Crye Precision is leading this effort as an anchor tenant for the Green Manufacturing Center in Building 128...
The 1.1 million sq ft Northwestern Mutual Tower in downtown Milwaukee is a 550 ft, 32-story skyscraper constructed by the joint venture team of Gilbane Building Company and CG Schmidt (CGS). The building is founded on a 3 ft to 10 ft thick...
Constructed in the 1920s, Brentford Hall is a condominium building with load-bearing, mass-masonry walls supported by shallow footings. The abutter to Brentford Hall planned to demolish its existing wood-framed building and construct a new...
Excavation and heavy civil construction in urban environments directly impact abutters and existing adjacent structures. Noise and dust create nuisance concerns, while demolition, excavation and dewatering can cause earth movement and structural...
New construction in metropolitan areas has direct impacts on immediate neighbors and abutters. While noise and dust are generally nuisance concerns, demolition, vibrations, excavation, and dewatering can cause structural damage to...
Approximately half of all of today’s commercial and institutional buildings were built before 1980¹. Many of these buildings were conceived and designed for generations of use, but have outlasted, or will soon outlast, the...
Part one of a four-part series focuses on commonly encountered structural issues in the foundations of historic houses of worship and provides guidance on ways to address them. Parts two and three will focus on wall and roof systems,...
On Wednesday, 19 November 2014, SGH’s Stephen K. Harris and Kenneth A. Klein presented at the 2014 SEAONC (Structural Engineers Association of Northern California) Fall Seminar titled “Design and Construction of...
Abstract: Below-grade waterproofing and temporary earth retention systems should be coordinated and designed in tandem to maximize continuity of the waterproofing system. We discovered that some designers and contractors do not consistently...
Abstract: A contractor erected multiple reinforced concrete mat foundations over the spring and summer construction season to support large tower structures. Six weeks into the construction, after nearly half of the nineteen foundations were cast...
Abstract: Several logistical challenges confronted the project team while designing a radar facility (building and radar tower) for the U.S. Government in the remote arctic. Procurement of construction materials in the U.S., delivery to Greenland...
Abstract: Designing structures in northern Greenland, where the environment consists of extremely cold temperatures, permafrost subgrade, and high wind speeds, presents a number of technical and logistical challenges. In this specific case study...