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Southeastern Sustainability Center Addition
By: Andrew LeBlanc ET-494 Fall 2013-Spring 2014 Advising by: Rudolph Rode and Byron Patterson
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Objective To design and construct a building in which has the following attributes: 24’x24’ Able to be multifunctional Leave potential for future development
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Overall vision Self sufficient = Save $$$ Begin 10 year plan
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Desires in Building: Pellet Mill functional Solar panels OHD door
Eye wash station Fire sprinkler system
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Basic parts Rigid frame column and rafter- main structural system
Girts and Purlins- secondary structural members Posts- supports structural members Jambs- doors, windows X-Bracing- the lateral load on a building is reduced by transferring the load into the exterior columns.
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Basic Connections Roof purlins- butt joint
Roof purlins and sidewall girts- prepunched holes Columns- anchor bolts Door jambs- open C channel and C sections
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Flush and Bypass Flush girts provide no air space between the columns and exterior panels yet offer the maximum amount of floor space. The Bypass girt makes a continuous run around the outside of a building’s columns, providing an air space the width of the girt between the column and exterior panels.
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Accomplishments (Fall 2013)
Research of metal structures Osha specifications and regulations Floor plan Electrical plan Foundation plan Sewage plan Plumbing plan Elevations
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Plans Floor plan Location of columns, openings X-bracing
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Plans Elevations Openings Heights Overall look of building
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Accomplishments Spring 2014
Eave strut details Sheeting details Wall details Roof framing Roof details Connection details Calculations Gather materials list Estimate Microsoft Project schedule of tasks Constructed mini model
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Plans Purlin plan Shows column location Offset of purlins
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Plans Eave details Tapered column connection
Siding, trim and roofing connections insulation
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Plans Anchor rod connections Where to place bolts in concrete
Connect to columns
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Calculations- Types of loads
D = Dead load L = Live load LR = Roof live load S = Snow load R = Rain load W = Wind Load E = Earthquake load
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LRFD Load Combinations:
Gives the overall compression or tension in members in steel buildings: 1.4D 1.2D + 1.6L + 0.5(Lr or S or R) 1.2D (Lr or S or R) + (0.5L or 0.8W) 1.2D + 1.6W + 0.5L (Lr or S or R) 1.2D + 1.0E + 0.5L +0.2S 0.9D + (1.6W or 1.0E)
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LRFD (Load & Resistance Factor Design)
LRFD Load Combinations for Southeasten’s Sustainability Center Addition, given: D = 30kips, L = 30kips, W = 12.5 kips 1. 1.4D = 1.4(30k) = 42k 2. 1.2D + 1.6L + 0.5(Lr or S or R) = 1.2(30k) + 1.6(30k) + 0 = 84k 3. 1.2D (Lr or S or R) + (0.5L or 0.8W) = 1.2(30k) (30k) = 51k = 1.2(30k) (12.5k) = 46k 4. 1.2D + 1.6W + 0.5L (Lr or S or R) = 1.2(30k) + 1.6(12.5k) + 0.5(30) + 0 = 71k 5. 1.2D + 1.0E + 0.5L +0.2S = 1.2(30k) (30) + 0 = 51k 6. 0.9D + (1.6W or 1.0E) = 0.9(30k) + 1.6(12.5k) = 47k In which I found to be 84k compression (+)
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Buckling load A W8 x 28 section was selected for a pinned-pinned connection as follows; with a length of 12 ft. K=1.0, ry=1.62, Fy=50Ksi (found in AISC manual) Slenderness ratio: KL/r= (unitless) Pu=4.71(E/Fy)^1/2= If, KL/r < Pu Then, Fcr=[0.658^(Fy/Fe)]Fy Now, Euler’s equation: Fe=∏^2 E/ (KL/r)^2 = ksi Plug in, Fcr=28.06 ksi= 28,060 psi elastic buckling-slender columns that have a large slenderness ratio and failure is before any yielding in the materials. inelastic buckling occurs for intermediate columns that have a moderate slenderness ratio and the failure occurs by both the buckling and the materials yielding simultaneously
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Codes, Specifications and Standards Building Codes
Most used single national building code: the International Building Code (IBC) Legal documents which protect public safety. • Minimum design loads • Detailed design, construction and inspection rules for structures in general 1) Building occupancy classifications 2) Building heights and areas 3) Interior finishes 4) Foundation, wall, and roof construction 5) Fire protection systems (sprinkler system requirements and design) 6) Materials used in construction 7) Means of egress
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Specifications Specifications are design guidelines and recommendations ACI (American Concrete Institute) 3500PSI concrete is used for applications where significant loading is expected. Uses include building footings, bond beams, grade beams, and floor slabs where heavy loads may be moved or stored. AISC (American Institute of Steel Construction) Specification for Structural Steel Buildings Code of Standard Practice for Structural Steel Buildings
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Specifications 2500psi- walkways, driveways 3000 psi- standard
3500 psi- where surface spalling isn’t acceptable 4000 psi- heavy constant loads 2500 psi 3500 psi 4000 psi
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Local codes and standards
Fire marshal and city of Hammond approval Approves drawn plans by stamping ensuring they meet requirements such as: NFPA 13, 13D, 13R - Sprinkler Systems NFPA 17 - Dry Chemical Extinguishing NFPA 10 - Fire Extinguishers
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Estimate an approximate calculation or judgment of the value, number, quantity, or extent of a job Gives approximation of total project cost Detailed description of materials used
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Estimate
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Time scheduling MS Project 2013 Total completion time: 6 weeks
Seven laborers working 40 hours weeks Monday-Friday, 8am-5pm Tracks progress and gives timelines to meet Total cost:$22,500
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Construction of mini model
A 1:12 scale model was designed Hinged roof 2 OHD doors Matted board for siding and roofing White felt for insulation Parts labeled by color
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References Council, International Code. "IBC 2009 Building Codes." Law.resource.org. International Code Council, 17 Mar Web. 17 Feb Delaune, Joe. “Public Safety Services memorandum.” sfm.dps.louisiana.gov Web. April 29, 2014. Johnson, Alford. “American Institute of Steel Construction, Inc.” Web. April 14, 2014. Maluinu, Jamie. "How to Calculate Wind Load." wikiHow. N.p., 10 Apr Web. 1 Feb Mangan Communications. “OSHA 29CFR1910.” Jun Web. April McCormac, Jack C. and Stephen F. Csernak. Structural Steel Design Fifth Edition. New Jersey: Pearson, 2012.Text Book. "Sprinkler Head Spacing and Location." The architect's technical resource. Arch Media, 20 Dec Web. 13 Apr Sunward, Jonthan. "Erection." Erection. 7 Mar Web. 10 Jan
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QUESTIONS
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