RICHARD KNOUFF | CONSTRUCTION MANAGEMENT
Advisor: Dr. John Messner
Building Name: Central Science Museum (Fictitious Name Requested by Owner)
Location & Site: Huntington, WV (Fictitious Location Requested by Owner)
Occupancy Type: Museum (Type A3)
Building Size: Approximately 49k SF Addition, 46k SF Renovation, 4 Stories Tall
Building Cost: $23 Million delivered at GMP
Building Code: Original structure constructed according to BOCA 1987; Renovation and Addition constructed according to 2009 IBC, no Historical Code applies, and Zoning Code withheld by Owner Request
Owner: Central Museums Inc. (Fictitious Name Requested by Owner)
Occupant: Public Museum
Contractor: Turner Construction
Project Manager: Oxford Development
Architects: Indovina Associates
Landscape Architects: LaQuatra Bonci Associates
Civil & Structural Engineers: DCI Engineers
MEP Engineers: Loftus Engineers
Exterior Systems:
12" CMU with fluid applied moisture barrier. The façade is a series of 3" insulated metal panels mounted on hat channels. This accounts for roughly half of the enclosure, whereas the other half is made up of a Curtain Wall System of Clearwall 4-sided Toggle Glazed Shear Spline System with Ultraclear Float glass. The roof is reinforced 60 mil TPA fabric membrane on 4" roof insulation.
Sustainability Features:
Aiming to be LEED certified as of 2009 requirements. Use of certified recycled content (Not less than 20% by cost); Locally sourced materials (Not less than 10% by cost); air quality management plan with air flushout and filtration procedures; Low emitting VOC materials.
Construction:
The construction is broken into three phases. In the first phase, the building is partially demolished and construction begins on renovation for the existing building. In the second phase, the addition is constructed and tied in to the existing building. In phase three, construction begins on the renovation that was added as a change order. The project is delivered through Turner as a general contractor for a guaranteed maximum price contract.
Structural:
The addition to the Museum will use cast-in-place concrete only. All concrete mixtures used in elements of the building will be normal weight mixtures with a compressive strength of 5000 psi and contain zinc or epoxy coated steel reinforcement bars and welded wire mesh. The foundations consist of a 5” slab on grade with footings 42” below grade at minimum. The exhibit floors are supported by W-Shape steel frames ranging in size from W12x14 to W18x35 because of the curved wall. Each bay supports metal decking with a 3.5” concrete topping.
Mechanical:
The mechanical system utilizes four air handling units installed in the addition, and one rooftop unit. These vary in CFM levels from 5,000 to 13,000. The air distribution system primarily focuses on the ground floor to control the thermal comfort level in the new classrooms and kitchen space. After construction is complete, it is included in the mechanical scope to calibrate and balance the system for the entire building, integrating the new system with the existing.
Electrical:
The main switchboard for this addition operates on 277/480 V as a 3-Phase system. The switchboard feeds 46 panelboards throughout the building and carries a total load of 1262 kVA. There is also an emergency switchboard included, which provides redundancy in case of shutdown.
Lighting:
All interior lighting is to be 3500K between 80 and 90 CRI, with track lighting at 3000K and exterior lighting at 4000K. The fixtures are taken from a total of 12 different manufacturers, but primarily from Portfolio, Metalux, and Halo Lighting. All lighting fixtures are LED and operate at 277 V, but are varied in type and size.
Fire Protection:
The constructed areas require a fire suppression sprinkler system. This comes in two types, both suspended ceiling sprinklers, and pendant sprinklers for exposed areas like the exhibit floors. Both have a standard coverage and “Quick” response types. They are divided into hazard categories. The classrooms and exhibit space are defined as light hazard spaces and the mechanical rooms are defined as ordinary hazard spaces.
Transport:
The new addition employs two kinds of elevators. In the theater lobby, there are two electric traction elevators with glass shafts to show off the engineering. In the added wing, there is a large hydraulic freight elevator for staff use and exhibit setup.