Structural Depth

Based on the analysis performed in technical report II, to allow for a uniform slab thickness with the new column grid layout, a two-way post-tensioned floor slab system would be optimal.  Since post-tensioned slabs are cast-in-place, it is possible to implement the system into 800 North Glebe with its unique curved slab edges. The increase of columns will help to reduce the building torsion, but will require transfer girders in the garage level to distribute the forces around the garage thruways and to the foundations.  The current foundations will then need to be redesigned to support the new loading pattern.  Along with the increased number of columns to help reduce building torsion, a post-tensioned floor slab will act more like a rigid diaphragm and therefore contribute to the lateral load carry capacity of the structure. 

Breadth Study I - Construction Management

The first breadth study will focus on scheduling and cost related to the redesign of the structural system to a two-way post-tensioned slab system.  Changing the slabs to a building wide uniform system will have significant changes on the construction process. 

Breadth Study II - Architecture Study, Building Envelope

To accommodate for the increase in columns, the architectural floor plans will need to be altered.  The existing layout will be studied to determine the proper size of rentable offices and cubicles and great effort will be made to keep the same ratios.  Also, by creating a uniform slab thickness, the use of perimeter post-tensioned beams may not be needed.  If this is the case, the curtain wall system will need to be altered. 

MAE Course-Related Study

To fulfill MAE requirements for senior thesis, the knowledge learned through master’s level courses will be implemented.  Information taught in AE 597A, Computer Modeling, will be critical in analyzing the structural system of 800 North Glebe.  Even though RAM Concept was not specifically taught, the concepts of meshing, diaphragms and property modifications will be used.  Along with AE 597A, the information taught in AE 542, Building Enclosures, will be utilized through the determination of curtain wall systems.

To view a copy of the UPDATED entire proposal, please click here.

To view a copy of the entire proposal, please click here.

To view a copy of the UPDATED executive summary, please click here.

To view a copy of the executive summary, please click here.