Construction Management Breadth
Construction Management For the construction management breadth initial cost and schedule of the building construction will be assessed. Comparisons between the proposed heating and cooling system and the designed system will be made with the goal being to find the break even period for the chilled beam system with a higher initial cost and to see how the change in system will affect the existing construction schedule for the project. The change in control systems in the building could have a significant impact on the installation cost and schedule, so this will need to be evaluated. The cost will need to be calculated as part of the mechanical depth, but can be looked at in more detail through the construction breadth.
The current construction delivery method is a Design-Bid-Build process. This will also be looked into and compared with several other delivery method options to see if an improvement in construction efficiency is possible.
Electrical Breadth
The conversion from the current VAV system to chilled beams with definitely have an impact on the electrical in the building. An example of this will be the savings in energy due to less fan power being needed. As a whole the electrical distribution system will be assessed and resized. Calculations will be done and compared with the current design to see the electrical impact of the proposed system. In addition, due to the function of the building, an assessment of the emergency power requirements can be done to insure that there is backup power available when necessary.
Currently the St. Louis Children’s Hospital Expansion project utilizes variable air volume (VAV) terminal boxes for the majority of the building. As is shown in the completed technical reports, the energy consumption is about 20% below the minimum standard set by ASHRAE; however, improvements can still be made to the mechanical system to effect both the cost and efficiency. To improve the system that has already been designed for this building, chilled beams will be researched as a potential replacement for the existing system. This will be a DOAS-Chilled Beam system, so there will need to be a major focus on the control systems in the building and how they differ between VAV-RH and the new DOAS system.
Proposed Redesign
