In May 2018, CCI was awarded this project to replace approx. 5,000 LF of existing force main with a new 16” PVC line. The majority of the alignment was through downtown streets occupied by businesses and single family homes. Traffic control, communication and phasing of the work were key to reducing impacts to CFPUA’s customers. Also included on this job were a horizontal directional drill and various storm drain improvements throughout the project corridor.
Clark Avenue Culvert Replacement
This was a fast tracked repair project for the City of Raleigh Stormwater Management Department that ultimately replaced a failing 70 year-old CMP culvert under Clark Avenue. The old 72” corrugated metal arch culvert was replaced with approx. 110 LF of parallel 60” reinforced concrete pipes. In addition to the new piped system, a large custom masonry junction box and precast concrete headwalls were included to help stabilize upstream and downstream ends of the culvert.
Newton Road Emergency Repair
In late May of 2018, a severe thunderstorm dropped nearly 4” of rain on Raleigh in less than 2 hours. On Newton Road in North Raleigh, the flash flooding caused not only the failure of a twin 72” CMP culvert, but also an active 12” water main. CCI crews responded on an emergency call from the City to repair the water main and once complete, consulted with Raleigh’s Stormwater Department on the best course of action moving forward. Utilizing a Design-Build approach, we were able to expedite the design process and begin construction on the pipe replacement within 3 days from the original failure. The outdated corrugated metal pipes were replaced with a 9×6’ precast concrete box culvert that utilized Stone Strong block retaining walls at both upstream and downstream inverts. Material selection was critical on this project as lead time, installation and cost were all crucial factors. CCI was able to have Newton Road paved and re-opened to regular traffic in 63 days, over a month sooner than projected. Key subcontractors and suppliers included Summit Coastal, Marvel Engineering, Puryear Transport, Fences Unlimited, Patriot Concrete, Raleigh Paving and Carolina Guardrail. In addition to those contractors, this project could not have been a success without the assistance and cooperation of the City of Raleigh Public Utilities & Stormwater Departments, HDR Engineering, Froehling & Robertson and CH Engineering.
Kenan Stadium Trunkline Replacement
This high profile project consisted of improvements to a storm drain trunkline running beneath Kenan Stadium at the University of North Carolina – Chapel Hill. The existing 42” RCP line was decades old and in need of an upsize and replacement. The 376’ of old pipe which ran from endzone to endzone at depths of 12 to 20’ was replaced with new 60” RCP with water-tight gasketed joints. A blind junction box was also added on the upstream end of the pipe alignment. The many challenges of the project included extremely tight construction access with limited laydown, the requirement to keep the stadium open to student traffic, construction occurring during one of the worst winters in the past 10+ years as well as a condensed schedule to ensure spring commencement could go on as planned. Even with the full field sod replacement added to the scope of work midway through construction, the project finished 2 weeks ahead of schedule. Key subcontractors included Southeastern Erosion Control, Carolina Green Corporation, Summit Coastal, Fortress Fencing and Puryear Trucking.
616 Oberlin is a new project in Raleigh that when complete, will provide 207 residential units on prime real estate within walking distance of Cameron Village. CCI was selected as the site contractor for the project and is responsible for all erosion control, earthwork, site utilities, asphalt paving, curb & gutter, concrete sidewalks and paving, striping, signage and traffic control, including a multi-phased pedestrian control plan. Due to the site constraints and the amount of cast-in-place foundation walls splitting footprint of the building, the grading on this project had to be performed in multiple phases. An initial mass excavation produced approximately 20,000 CY of material – half of which was exported, while the other half was stockpiled onsite to eliminate import costs. The stockpile material will serve as backfill for the large foundation walls once complete. In order to provide a safe excavation for the concrete foundations to be installed, approximately 1400 SF of temporary shoring via a driven bar system was utilized on the northern boundary of the site. The water and sewer utilities serving the project required a total of 3 taps in Oberlin Road and another 3 in Daniels Street. Also associated with this project is an offsite sewer replacement on Smallwood Drive which will require both traffic control and by-pass pumping operations. Key subcontractors include Certified Concrete Construction, Gelder & Associates, Southeastern Erosion Control, Sides Seeding, Puryear Transport, Morrison Engineers and Boone Masonry.
Scope of work for this project included mass excavation and grading, storm drain, water & sewer. The Gramercy is a new mixed-use development located on Glenwood South in Downtown Raleigh. The project provided 203 residential units with ground floor retail and restaurant space as well as a cast-in-place concrete parking deck. With the building’s design including basement parking, CCI was required to perform mass excavation and export of approximately 8,300 CY of material. Due to the building’s proximity to Glenwood Avenue, North Street and Boylan Avenue surrounding it, the excavation required an engineered shoring system to be installed. A small portion of this was achieved using the “beam and lag” method, but the remaining portions were shored using large precast blocks. CCI installed approximately 345 of the 2x2x8’ concrete blocks onsite. All of the utility work on this project involved working in the busy downtown streets, making production very slow and putting a premium on safety. Key subcontractors included Summit Coastal, Locklear Boring, Puryear Transport and Razorback Boring.