February 4, 2023

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Helping Dreams Come Reality

Clark Construction employs 3D modeling, laser scanning to solve healthcare project challenges

When it opens in 2023, a new health care facility for MedStar Georgetown University Medical center in Washington, D.C., will aspect the latest health care and technological developments.

The new 477,213-square-foot health-related and surgical developing will characteristic 156 affected individual rooms, 32 examination rooms and a rooftop helipad with direct entry to 31 running rooms. An intraoperative MRI technique with a ceiling-mounted rail system connecting the diagnostic room and adjacent functioning rooms will carry the MRI magnet straight to the affected person. In addition, the undertaking consists of a 600-automobile, under-quality parking garage, 18 elevators and 6 acres of new environmentally friendly space.

The web-site is on the land of the previous Kober-Cogan Constructing, which was shut down in May 2010 right after the discovery of mold in the building and formerly experienced housed the hospital’s psychiatry section. 

That presented unique difficulties for the challenge group, led by Bethesda, Maryland-primarily based Clark Construction. Miles of water utility traces, quite a few of which were being not documented, were being operating directly under the spot of the new pavilion to feed both MedStar Georgetown College Medical center and the Georgetown University campus properties. The venture workforce had to relocate these utilities outdoors of the making footprint to allow for the venture to commence.

“The Clark team made and engineered a 250-foot-very long utility bridge to aid chilled drinking water and electrical companies from the central utility plant to the current MedStar Georgetown Medical center,” said Bradley Hunter, challenge govt at Clark Design Group. “The bridge installation expected shut coordination with mechanical and electrical contractors who mounted the utilities on prefabricated racks which have been then hung from steel beams measuring 60 feet, allowing for excavation to commence under.”

Clark designed a non permanent utility bridge to support lively utilities for the present clinic.

Permission granted by Clark Design


Clark Design, alongside with architects HKS and Shalom Baranes Associates, assembled a BIM product of the present utilities. As structure progressed and the primary structure and caisson places were being set, “we executed additional borings at all caisson locations and even more knowledgeable the BIM excavation design,” explained Hunter.

This preliminary stage allowed the Clark group to superior tell the cost product with respect to deep foundations and to begin revising the excavation system. With almost 1,000 piles to install for guidance all through excavation, Clark recorded the genuine soil and utility situations encountered in real-time with each and every pile and enter the facts into the BIM product. This considerably improved Clark’s knowing of the internet site and authorized to proceed to revise and resequence the excavation strategy in progress of the industry crews, claimed Hunter. 

“At the completion of pile installation, we were being in a position to have a remarkably extensive profile of the envisioned excavation well in progress of the last phase of excavation,” said Hunter. “With this information, we have been in a position to build mitigation tactics in an exertion to reduce impacts to the vital path of the venture.”

Team turns to technological innovation on internet site

Clark performed a preliminary study with standard survey instruments, these kinds of as the Leica MS50, which brings together whole station features, GNSS connectivity, digital imaging and 3D laser scanning in a one instrument. The 3D technological know-how done checks of slab edges, precast concrete, joints and flooring flatness. The technological know-how also coordinates existing properties to carry out tie-ins with the façade.

Following completing and environment survey regulate factors all around the web site, the team commenced the scanning and structure approach, stated Kathleen Lavelle, task supervisor at Clark Design Group.

“For 3D laser scanning, we use our Leica MS50 once more which has entire scanning capabilities. We use our study regulate points to tie the scanning details into web page coordinates. After scanning is total, Leica’s Infinity method is utilized to clear up the scan,” stated Lavelle. “This can be exported to different file formats based on the program getting applied to perform with the details.”

The survey workforce made use of Leica MultiWorx, an incorporate-on app to Autocad Civil 3D. This scan data can be made use of to generate existing circumstances and as-designed drawings as desired.

Running an inflow of folks

Because of to its place adjacent to a university and health care middle, the Clark crew experienced to imagine of solutions to deal with the movement of pupils, patients and visitors, primarily early in the COVID-19 pandemic to account for social distancing rules.

To do this, the development group designed a short-term pedestrian bridge to maintain obtain along the east facet of the jobsite. Also, an on-website batch plant, making a lot more than 35,000 cubic yards of concrete, aided with targeted visitors congestion by reducing the range of deliveries to the venture website. The plant taken out an approximated 3,500 trucks off the street as very well as making sure concrete top quality on web site, in accordance to Lavelle.

Removing vehicles from the road also aided decrease noise amount, another challenge as the construction website is in shut proximity to quite a few household neighborhoods, stated Andree Yaap, project govt at Clark Construction Group.

Clark also worked intently with the HKS and proprietor to consider which job features could be created offsite. Making use of a official scoring and analysis course of action, the group selected things to prefabricate primarily based on what would supply the most advantage to the job, mentioned Yaap.

The undertaking includes more than 700 prefabricated elements, including 156 bathroom pods, functioning area ceilings, client headwalls, electrical rooms, medical rooms, MEP skids and racks, and interior partitioning, explained Yaap.

A line of individual bathroom pods ready to be mounted.

Permission granted by Clark Building


Developing elements were made throughout the nation, with lavatory pods currently being designed in Texas, working space ceilings getting constructed in Oregon, headwalls staying created in Oklahoma and wall panels staying crafted in Virginia, mentioned Yaap.

“Clark’s attempts have aided to expedite schedules and minimize expenses,” said Yaap. “Other benefits include increased high quality ensuing from assembly in a managed natural environment, the reduction of building activity on web site and a reduction in noise degrees, neighborhood site visitors and congestion.”