Michael Bologna. 665 Meadow Ln Rochester PA, State College, PA October 16, 2015

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1 Michael Bologna State College, PA Meadow Ln Rochester PA, October 16, 2015 Linda M. Hanagan, PhD, P.E. The Pennsylvania State University Dear Dr. Hanagan, The attached technical reports covers the assigned topics for Structural Notebook Submission B along with the previously submitted gravity and lateral loads analysis as part of Submission A. Submission B is an analysis of the gravity loads for a typical bay in the existing structural system along with three alternative structural systems. This submission will help me prepare for my eventual redesign by comparing the three alternative systems by the weight, thickness, cost, advantages, and disadvantages. In addition, I revised selected pages from Submission A for corrected loads for my new Submission. These revised pages includes the roof detail, wood level detail, and concrete level detail. I appreciate your effort in reviewing my submission and I look forward to receiving feedback from you. Sincerely, Michael Bologna

2 Jackson Crossing Located in Alexandria, VA Technical Report 3 Michael Bologna Structural Option Advisor: Dr. Linda Hanagan October 16, 2015

3 Table of Contents Abstract 3 Executive Summary... 4 Location Plan... 5 Site Plan... 5 List of Documents Used in Report... 6 Gravity Loads Typical Parapet Detail 7 Typical Wood Level Detail. 9 Typical Concrete Level Detail Typical Exterior Wall Detail (Brick).. 11 Typical Exterior Wall Detail (Cementitious Panel). 12 Design Live Loads.. 13 Non-Typical Loads. 14 Snow Load and Drift.. 15 Lateral Loads Wind Loads.. 16 Seismic Loads. 19 Typical Bay Location.. 21 Existing System Gravity Check 22 Non-Composite Steel Option 26 Flat Plate Two Way Slab Option.. 30 Precast Plank Option. 37 Systems Comparison Overall Comparison 39 Structural Thickness.. 40 Structural Weight 41 Assemblies Cost. 42 Jackson Crossing 2

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5 Executive Summary Jackson Crossing is a development in Alexandria, Virginia by AHC, Inc. Offering one, two, and three-bedroom apartments, it is targeted at low-income residents with families. The structure is five floors and 107,740 square feet. Included in the building is an underground parking garage. The project will be completed by December 2015 and will come to a total project cost of sixteen million dollars. The gravity system consists of four floors of wood floors with wood trusses and bearing walls. The wood members sit on two floors of concrete, one of which is below grade. The slab on the second floor is a reinforced two-way slab while the ground floor is a reinforced one-way slab with concrete beams. The lateral system for the top four floors includes a masonry shear wall, and wood sheathed shear wall. The wood sheathed shear wall is anchored into the second floor slab while the masonry shear wall is integrated into concrete shear walls that extend down into the foundation. Jackson Crossing 4

6 Location Plan Figure 1 (Courtesy of Google Maps) Site Plan Figure 2 Jackson Crossing 5

7 List of Documents Used in Report AISC, Steel Construction Manual, Fourteenth Edition Breyer, Donald, Kelly Cobeen, Kenneth Fridley, and David Pollock, Design of Wood Structures ASD/LRFD, 7 th Edition Usg.com, DUROCK Cement Board Minimum Design Loads for Buildings and Other Structures (ASCE 7-10) Minimum Design Loads for Buildings and Other Structures (ASCE 7-05) RS Means Assemblies Cost Data, 2014 Jackson Crossing 6

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22 Figure 3- Area in red highlights location of typical bay Typical Bay Location Figure 3 shades in red the location of the typical bay I will use to analyze the existing structural system and the three alternative systems. Jackson Crossing 21

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40 System Comparison Systems Parameters Existing Wood Non-Composite Flat Plate Two- Truss Joists Joists and Girder Way Slab Precast Planks Thickness (in) Weight (psf) Fire Rating (Hr) Material Cost ($/sq.ft.) Installation Cost ($/sq.ft.) Total Cost ($/sq.ft.) Advantages -Lowest Cost -Light weight -Small slab -Thinnest system thickness thickness -Lightest -Voids for Mechanical -Stable during construction Disadvantages -Largest Structural depth -Relatively Low Cost -Vibrations could cause uncomfortablility -Durable -Heaviest -Most Expensive -Low Cost -Efficient with prestressed strands -Easy construction -Heavy Structure -Transportation can cause trouble as planks are fragile and large Potential for In-depth Investigation Yes No Yes Jackson Crossing 39

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