City Hall Update, March 2025

March 6, 2025

Moving on up

Construction crews are working on the second floor. On Tuesday the crews started the concrete pour for the second floor. In the early hours of Tuesday, a steady stream of concrete trucks made their way to the City Hall construction site. Once on site crews would use the concrete pump truck and a drop bin to place the concrete. After that, team members would make sure the concrete was evenly distributed. Crew members spread the concrete by hand, and another team member used a power trowel. A power trowel, or a power float, is a piece of construction equipment used to apply a smooth finish to concrete slabs. To see the process, check out the short video below. Now that the floor is in place, the team will start forming the walls for the second floor.

Raleigh's New City Hall - Construction Video

March 13, 2025

Detour map and direction map for Hargett Street

Hargett Street Lane Closure

Beginning Monday, March 17, the City of Raleigh will implement a westbound lane closure on Hargett Street between McDowell Street and Dawson Street to accommodate the crane operations and install pre-cast panels for the new Raleigh City Hall construction. The closure will remain in place through December 31, 2025.
In the next few weeks, crews will start installing the building’s façade. This process will require the closure of a section of Hargett Street. This closure will facilitate the continuous concrete pour required to build out the building’s floors and place the building façade. Additionally, multiple concrete trucks and equipment will be staged within the closure area for efficient material and equipment unloading.

March 27, 2025

image show construction site with boom pump

In recent weeks, the construction site has seen a lot of action. The construction contractor has many crews working on different parts of the building. They have also revised the construction schedule, so work occurs almost around the clock. The building's shell is primarily made of concrete reinforced with rebar. Part of the concrete placement process uses a machine called a boom pump.

What is a Boom Pump

A boom pump is a specialized machine used in construction to transfer concrete from the mixing truck to the desired location on the construction site. The boom pump makes pouring concrete in hard-to-reach places easier and is very useful for projects that need precise concrete placement, such as high-rise projects like City Hall.

How does the boom pump work?

The boom pump consists of a hopper, a pump, and a distribution device. A concrete truck delivers the concrete to the hopper. The hopper acts as the holding area for the concrete before it gets pumped by the pump operator. The pump operator controls the concrete flow and the boom's location with a remote control. The pump uses hydraulic pressure to move the concrete through the pipes and hoses.

The boom system uses a series of articulating arms with joints that allow precise concrete placement. At the end of the boom, there is a flexible pipe that allows crew members to manually direct the flow of concrete. The concrete is poured in layers and crew members use different tools to make sure the concrete is evenly distributed and compacted.

The boom pump is an interesting machine to watch and an essential tool in building Raleigh's City Hall.

Contact

Have Questions?

civic.campus@raleighnc.gov

Department:: Engineering Services

Related Services:: City Hall Project Updates

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