Dickson Intermediate School Dan Coholich
Pittsburgh, PA Construction Management
Advisor: Ray Sowers
Building Statistics Part 1
General Information
About the Project
Building Name:
Dickson Intermediate School
Location:
7301 Schoyer Avenue Pittsburgh, PA 15218
Building Occupant Name:
Woodland Hills School District
Occupancy Type:
K-12
Size:
101,042 sqft
Total Levels:
4
About the Project
Start Date:
July 30th, 2018
Finish Date:
December 31st, 2019
Prime Contracts/include GESA: $17,492,971/$21,734,273
Hard cost for new construction and renovations:
27,854,196
Preliminary Construction Budget:
26,407,017
Project Delivery Method:
Hybrid of Design-Bid-Build and Guaranteed Energy Savings Act (GESA) of Pennsylvania
Project Team
Owner - Woodland Hills School District https://www.whsd.net/
GC - Nello Construction https://www.nelloconstruction.com/
GM - Reynolds Solutions https://reynoldssolutions.com/
Architects - Core Architects https://www.corepgh.com/
Pitt Electric
https://www.pittelectric.com/,
Shipley Brothers Plumbing http://www.shipleyplumbingpa.com/
Lugalia Mechanical
Architecture
This particular project is broken down into two areas. There is building A and building B. Building B is a new addition being added on to the existing. The new addition will include a new cafeteria in the lower level as well as adding additional classrooms in the above three levels. Along with that, there is a one story gymnasium addition. Building A will consist of all renovation work. The building is receiving a whole new make-over as there will be new interior finishes as well as brand new material for classrooms. The windows are being replaced to match the existing in building B. Additionally, Zoning for this site was very easy for this crew. They had a lot of space and a couple different entrances for the site. The plan above is a little hard to follow so I will explain it until I have better photos. The classroom addition is located in the northwest part of the one while through the front of the building is true north. Most of the material lay down area is located where the new parking lot will be. In addition, trailers and more storage area is located behind the school.
Building Enclosure and Sustainable Features
As I mentioned before, this building is two different areas. The existing building facade consisted of masonry brick veneer with a tan tone color. The plan for the new addition is to match the existing so it will be the same type of brick incorporated. As for the roofing portion, I do not know the specific roofing material used. The shading portions uses horizontal fins for an overhang over the windows.
This project itself is also a restoration project. I would say this is the most notable feature is Reynolds Solution providing its restoration services by including brand new HVAC units that provide a returned money cost for its life efficiency. There is also the use of shading being implemented. The front of the building will include horizontal fin overhangs over each window.
Building Statistics Part 2
Construction
For this particular project, there will be two phases involved. The first will involve the demolition and abatement phase followed by a new addition and renovation of the existing building. There is an existing one story building being demolished while there are ducts, pipes, and wires being demoed out of the existing building. While this occurs, workers will be aware of asbestos. Any hot spot found will be taken care of immediately. Any wall tile and casework will be demoed out of the existing building in preparation for new casework and finishes. Once this is complete, construction can begin on the new addition. While the new addition is being built, renovation work on the existing building can take place as well.
Electrical/Lighting
To start off, the outside of the building will receive a new utility transformer by Duquesne Light Company. It will be a 480 volt, 3 phase secondary transformer. From here, there is an existing duct bank that runs into the school containing nine 4" conduits (6 active and 3 spare). There is an existing 4 #500 KCMIL in each active conduit. There will be a new main breaker going into the school. It will be 480 volt, 2000 amp, 3 phase, 4 wire switchboard. In addition, there will be 2 distribution sections. One is a 208/120 volt, 3 phase, 4 wire while the other is a 480/277 volt 3 phase, 4 wire. Together, these sections will run to 30 different panel boards ranging from 40 amp up to 250 amps. There is also the process of adding diesel emergency engine generators. These will be operated only in case of emergencies. The lighting for the inside and outside of the building will contain all LED light fixtures. In addition, to better control the lighting for energy savings, there have been a number of control devices installed. This includes, time switches, photoelectric switches, standalone daylight-harvesting switching and dimming controls, indoor occupancy and vacancy sensors, switchbox-mounted occupancy sensors, digital timer light switches, lighting contactors, and emergency shunt relays.
Mechanical System
The HVAC system will consists of boilers, air-cooled water chiller, indoor air handling units, air-cooled condensing unit, rooftop air handling units, ductless split systems, and variable refrigerant air handling units. The main focus are the boilers. The boilers shall be designed for a minimum of 5:1 continuous turn down with constant carbon dioxide over the turndown range. The boiler shall operate with natural gas and have certified input and output ratings as scheduled on the drawings and a thermal efficiency rating up to 99% at minimum input. In addition, there will be a total of 5 air handling units and 4 rooftop units. For the existing building, demolition of old ducts, grilles, and pipes will be necessary to instill brand new equipment. There will be new exhaust fans introduced as well. Most of the ducts will be rectangular with some flexible. The piping will come from the boiler room and go throughout the building.
Structural
For the existing building, there are protocols to repair the internal concrete reinforcement and repair of exposed structural, shrinkage, and settlement cracks. Cast-in-place concrete will be used for formwork, composite floor construction, slab on grade, shear walls, and foundation walls. The new addition will have a slab on grade foundation to match the existing with concrete footings and piers. The new addition will incorporate a superstructure of columns, beams, and flanges. The largest columns being used are W10x77, W10x54, and W12x79. The footings will range from 3’x3’x12’’ to 13’x13’x27’’. The gymnasium addition will have surrounding structural concrete masonry blocks that go up 33’2’’.
Fire Protection
This building will be complete with a wet pipe combined sprinkler/standpipe system (class 1 manual wet system) in accordance with the NFPA standards 13-2010, 14-2010, and 24-2010. The 2009 IBC and 2009 IFC will also be incorporated. In addition, fireproofing should be done on structural steel exposed to damage or moisture. Firestopping should be done on all joints and penetrations in fire-resistance rated and smoke-resistant assemblies and other openings indicated. Typical all fire assembly penetrations and floor assemblies.
Telecommunications
Automated Logic contractor will be responsible for all of the telecommunication systems; communication with the electrical contractor will be critical. Cable trays will be used to carry the wires from room to room. Old wires and trays will need to be demoed from the existing building. These systems will have a minimum of two-way internal intercommunications between staff locations, classrooms, and scheduled bell event announcement. In addition, there is the capability of pre-recorded emergency announcements that can simply be activated by a simple soft key or via a dedicated push button.
Transportation
This building will include two elevators on opposite ends on each other. These are 330 amp holeless hydraulic elevators with a net capacity of 3500 pounds and three-stop automatic. One will be on the far west side and the other on the far east side. There are three sets of stairs that will be utilized as well.
Special Systems
A unique aspect of this building will be the north wall of the existing building. The challenge here is trying to underpin the foundation around the lower level of the existing to match the floor level of the new addition.