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 College Hospital in Washington, D.C., will aspect the most recent health-related and technological advancements.

The new 477,213-square-foot professional medical and surgical creating will characteristic 156 client rooms, 32 exam rooms and a rooftop helipad with direct entry to 31 functioning rooms. An intraoperative MRI process with a ceiling-mounted rail technique connecting the diagnostic area and adjacent operating rooms will bring the MRI magnet right to the patient. In addition, the task incorporates a 600-automobile, below-grade parking garage, 18 elevators and 6 acres of new eco-friendly place.

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

That introduced special challenges for the task team, led by Bethesda, Maryland-based mostly Clark Building. Miles of h2o utility traces, several of which have been not documented, were being managing straight below the locale of the new pavilion to feed the two MedStar Georgetown University Medical center and the Georgetown University campus structures. The job staff experienced to relocate these utilities exterior of the setting up footprint to allow the challenge to commence.

“The Clark crew created and engineered a 250-foot-extended utility bridge to aid chilled drinking water and electrical companies from the central utility plant to the present MedStar Georgetown Medical center,” said Bradley Hunter, undertaking government at Clark Development Team. “The bridge installation essential close coordination with mechanical and electrical contractors who set up the utilities on prefabricated racks which have been then hung from metal beams measuring 60 ft, enabling excavation to start out below.”

Clark intended a momentary utility bridge to guidance active utilities for the current medical center.

Permission granted by Clark Development


Clark Building, together with architects HKS and Shalom Baranes Associates, assembled a BIM design of the current utilities. As structure progressed and the primary construction and caisson areas were set, “we executed more borings at all caisson places and even more informed the BIM excavation model,” said Hunter.

This original phase permitted the Clark crew to much better tell the price tag model with respect to deep foundations and to get started revising the excavation program. With nearly 1,000 piles to install for help throughout excavation, Clark recorded the precise soil and utility disorders encountered in serious-time with every pile and input the information into the BIM product. This considerably enhanced Clark’s being familiar with of the web-site and authorized to proceed to revise and resequence the excavation program in progress of the area crews, explained Hunter. 

“At the completion of pile installation, we ended up in a position to have a extremely comprehensive profile of the predicted excavation very well in advance of the ultimate period of excavation,” said Hunter. “With this information, we have been equipped to develop mitigation strategies in an energy to lower impacts to the vital path of the venture.”

Team turns to technology on web-site

Clark performed a preliminary study with conventional survey devices, this kind of as the Leica MS50, which combines total station functionality, GNSS connectivity, digital imaging and 3D laser scanning in a solitary instrument. The 3D know-how performed checks of slab edges, precast concrete, joints and floor flatness. The technological innovation also coordinates existing buildings to accomplish tie-ins with the façade.

Soon after completing and setting survey command details all over the web site, the group began the scanning and structure process, reported Kathleen Lavelle, project supervisor at Clark Building Group.

“For 3D laser scanning, we use our Leica MS50 all over again which has total scanning capabilities. We use our survey control factors to tie the scanning details into internet site coordinates. After scanning is entire, Leica’s Infinity plan is employed to clean up the scan,” claimed Lavelle. “This can be exported to unique file formats depending on the program currently being utilised to perform with the knowledge.”

The survey crew applied Leica MultiWorx, an include-on app to Autocad Civil 3D. This scan data can be utilised to produce current circumstances and as-developed drawings as wanted.

Taking care of an influx of men and women

Owing to its spot adjacent to a university and health care centre, the Clark staff had to feel of alternatives to handle the flow of college students, sufferers and guests, specially early in the COVID-19 pandemic to account for social distancing suggestions.

To do this, the design crew designed a momentary pedestrian bridge to keep accessibility together the east side of the jobsite. Also, an on-web page batch plant, making more than 35,000 cubic yards of concrete, aided with targeted visitors congestion by minimizing the amount of deliveries to the task internet site. The plant eradicated an approximated 3,500 vehicles off the highway as very well as making certain concrete good quality on internet site, according to Lavelle.

Eradicating vans from the highway also aided lessen noise level, a different problem as the development web site is in close proximity to quite a few residential neighborhoods, explained Andree Yaap, project government at Clark Design Group.

Clark also labored closely with the HKS and proprietor to appraise which challenge factors could be created offsite. Utilizing a official scoring and analysis course of action, the staff picked elements to prefabricate based mostly on what would give the most advantage to the project, said Yaap.

The venture consists of extra than 700 prefabricated components, together with 156 bathroom pods, operating space ceilings, patient headwalls, electrical rooms, scientific rooms, MEP skids and racks, and inside partitioning, explained Yaap.

A line of client lavatory pods all set to be installed.

Permission granted by Clark Development


Making things were being produced across the country, with rest room pods being constructed in Texas, working place ceilings remaining developed in Oregon, headwalls currently being created in Oklahoma and wall panels becoming built in Virginia, said Yaap.

“Clark’s initiatives have aided to expedite schedules and minimize expenditures,” said Yaap. “Other gains include things like improved high-quality ensuing from assembly in a controlled surroundings, the reduction of building action on site and a reduction in noise levels, community website traffic and congestion.”