Construction

The contract for the Anthem House is a Guaranteed Max Price with a Construction Manager at Risk. The Bozzuto Construction Company was awarded the project as the Construction Manager promising a guaranteed maximum price of $102,000,000. Other major players in the project involve Miller, Long and Arnold which are doing all the concrete and structural work, while also Whitman, Requardt and Associates LLP have done all the designing and civil engineering work. Since the Anthem House is located in the heart of a large city, site congestion and access requires careful and intricate consideration. The construction manager was able to use a parking lot across from the site for their trailer, allowing smaller trailers to fit within the boundary of the site for subcontractors. This ultimately created more space for the site.

 

Aside from maintaining a schedule and a budget, ensuring the safety of the public took main priority. When it came to closing down the street to unload trucks or pump concrete, vehicle and pedestrian traffic where of main concern. After establishing a plan of action for safety and finalizing contract details and finances, construction began on February 23, 2015 with an expected substantial completion date in early April 2017.

 

 

 

Demolition

The site is to remove and cap off utilities that are on the site such as light poles. Since this site is fairly open there is not a tremendous amount of demolition to be done. Things like removing patches of 8” thick bituminous paving, portions of guard rail, trees and bushes, a bench, chain link fence, a flag pole, concrete walks, and a concrete apron are to be demolished and when needed are recycled. Contaminated soils exist on/next to the bituminous paving on the site and are to be removed with very specific instructions.

 

 

 

Structural

This structural consists of reinforced concrete columns coming out of the first floor spread footings. Each spread footing has either a 24” x 30” or 16” x 60” column extending from it while the columns on the second floor are 24”x24”. The slab on grade consist of a 4000 psi, 6” thick slab.  Engineered pre-fabricated load-bearing structural steel panels for the walls and corrugated metal pans that will have concrete poured on them to make up the ceilings and floors (composite deck system) will be used on floors three through nine. The 14 gage metal stud walls are 3 5/8” galvanized studs spaced 16” on center.  Floors three through nine receive a 3000 psi, 4 ½” thick slab reinforced with 6’ x 6’ wire mesh segments and A610 rebar. These pre-panelized load-bearing metal stud walls are pre-fabricated off site in a special facility that have a very high quality control program from welded connections to measurements. The metal pans that are being used as the decking are an Epicore MSR composite floor system that works hand-in-hand with the pre-fabricated load-bearing walls. The pans shape is flat across the bottom, which will form a constant uniform load on the bearing walls. Also on this pan are dovetail ribs that are staggered when placed on the floor with the ends of these ribs pinched. This helps reject the fire, sound and smoke transfer form unit-to-unit. All materials will be placed on site by one of two tower cranes on site.

 

 

 

Mechanical & Fire Protection

The main rooms for mechanical equipment are Room 201 which houses the pool pump, Room U304 which is the mechanical room for the units and Room U106a where the fire pump is. All apartments, offices, retail spaces and retail lounges will have their own separate air handling units combining to 324 units. Each apartment has its own air cooled condensing unit located on the roof. Depending on the square foot of the apartment the units range from 2-5 tons. With the air cooled condensing units each apartment has its own gas furnace with direct expansion cooling.  A wet sprinkler system will be used throughout the entire building for fire suppression unitizing ½” recessed pendant sprinkler heads. Fire extinguishers will be supplied in every apartment.

 

 

Electrical System

On the lower elevation of the building is a walk out basement level where in Rooms 001, 002, 003 there is a transformer room, electric room and generator room. Coming into the electric room are two 3000A 120/208V, 3-phase, 4-wire connections. There are two to satisfy each side of the building and each has  an 8 set of 4 #500 KCMIL, #400 KCMIL GND in 4 inch conduit. There are 6 meter banks, two on the fourth, sixth and eight floors. In the generator room there is a 300KW, 480V, 3-phase, 4W Diesel generator with a weatherproof enclosure.

 

 

 

Masonry & Exterior Facade Materials

The exterior facades have a variety of materials including fiber cement panel’s colored hardie and nichiha, masonry veneer brick colored brown and gray, vertically textured and smoothed cast in place concrete wall, black natural granite veneer, metal panel, cast stone veneer, thin stone veneer, aluminum reveal system and spandrel panel. Masonry and stone facades will be placed using galvanized metal anchors. Traditional scaffolding, tube and clamp, will be used to erect the masonry. JLG lifts will be used to place the other materials such as the fiber cement panels.