Thesis Abstract
Executive Summary
The abstract for Residence Hall 2 outlines the key project features of all the building systems as well as a background on the building program itself. Please see technical assignment #1 for a complete analysis of construction project management and exisiting conditions for this project. The following is an in depth description of each system listed on the abstract.
Cast In Place Concrete
The CIP concrete on Residence Hall 2 is primary used in the footings. These continuous footings range in depth from 12” to 18”. These footings are for the load bearing CMU walls as well as the brick façade. According to the specifications this concrete is to have a 28 day compressive strength between 3,000-4,000 psi.
Precast Concrete
The precast concrete on this job is the flooring system. Each floor consists of 8” precast hollow core plank, fabricated by Say-Core, Inc. This company is located in Portage, Pennsylvania which is approximately four hours West of Collegeville. Plank is to have a minimum of 2” bearing and is set onto 1/8” thick high density plastic bearing pads. The plank is connected using reinforcing steel as well as steel connection plates to be field welded. All pre-cast plank is to be fully grouted with grout having a 28 day compressive of 3,000 psi and non-shrink grout to have a 28 day compressive strength of 10,000 psi. The mobile crane being used to erect this plank is an 80 ton hydraulic crane that is located in a controlled access zone directly to the North in the center of the project. It is from this location that the plank has been set on each floor. Part of the façade of this building is precast stone which is to be integrated with the face brick. This is being done to match the existing façade on Richter/North Hall.
Mechanical System
The mechanical system for Residence Hall 2 is being installed by Rogers Mechanical Company. It consists of nine air handling units that range from 1000-4900 CFM. There are two types of fan coil units throughout this project, 800 or 950 CFM, that help service the air conditioning system. The system runs from chilled water that is supplied from the existing chiller plant that is located to the North of the project and serves the rest of campus. The heating consists of electric heaters that produce anywhere from 2550-17,065 BTU/Hr and fin-tube radiation that is also run in different areas of the building. This is supplied by the colleges existing steam lines. Also part of the mechanical equipment is an energy recovery unit that sits on the roof. All equipment, as outlined in the operations will be controlled by a Direct Digital Control Building Autonomation System that will be tied in to the existing program that the college uses to service the rest of campus. There is a primary HVAC equipment room located on the ground floor. Also from the second to the fourth floor there are smaller mechanical closest and a small attic HVAC room.
Electrical System
The electrical system for Residence Hall is fed from a substation in Richter/North Hall. This substation is divided into four sections. There is a 200A load interrupter switch rated at 5KV, a 500KVA transformer, a 1600A main breaker section and a main distribution section. The new residence hall will be fed from an 800A 3 pole circuit breaker that will be installed in the main distribution panel in Richter/North. The main feed to the building is two sets of 750kcmil AL in 4” conduit. The voltage to the building will be 208/120V. This feeds all panelboards in the building for lighting, receptacles, and appliances. It also feeds the necessary MEP equipment as well. The emergency generator for Residence Hall 2 is a 125kW natural gas generator that is 208/120V 3 phase 4 wire generator that feeds a 400A emergency distribution panel. There is a main electrical service room located on the ground floor as well as electrical closets located on each of the remaining floors.
Masonry
The masonry on this project consists of two areas; the brick façade and CMU load bearing and non-load bearing walls. CMU’s are connected to the CIP footings by vertical dowels that extend from the top of the footing into the CMU. This vertical reinforcing is continued vertically through the walls and to each floor. The load bearing walls are to be fully grouted with grout having a 28 day compressive strength of 3,000 psi. The brick veneer is attached to the CMU through the use of anchors which serve as horizontal reinforcement. The brick veneer is to match the existing brick veneer on Richter/North Hall. The CMU was erected using regular framing scaffold. The brick veneer will be erected using the same system or a mobile scaffold system. This is yet to be determined by Morgantown Masonry who is performing the work.
Curtain Wall
The curtain wall being installed on this project is a Glazed aluminum curtain wall, thermally broken with interior tubular section insulated from an exterior glass retaining member. Also included are drainage holes, deflector plates and internal flashings to accommodate the internal weep drainage system. Sloped members of the curtain wall are constructed of solid insulating wall and roof panels. It is being designed and fabricated by Entrance Systems, Inc. Final design must be approved by the architect. The manufacturer will have a representative present to provide field surveillance of the installation and will report installation procedures and unacceptable conditions upon completion of construction.
Fire Protection
The fire protection system for Residence Hall 2 consists of a wet piping system. The piping is schedule 10 for the main lines and schedule 40 for the branch lines. The sprinkler heads on the system are all quick response and being supplied by Viking. The rooms are classified as a light hazard and the laundry area classified as an ordinary hazard. Calculations were run accordingly and a pump is not required as the attic space has fire retardant wood trusses and plywood. There is a 4” standpipe that supplies all the floors at the Residence Hall. There is also a dry standpipe in the East and West stair towers that the fire company can use. The system is also connected to an alarm monitoring company should water be released from any sprinkler head.
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