www.ozsaferooms.com Senior Design 2003- -2004 2004 Senior Design 2003 Project # 04024 Project # 04024 Team: Team: Chris Moore (ME) Chris Moore (ME) Brett Kimball (ME) Brett Kimball (ME) Matt Barton (ME) Matt Barton (ME) Matt Weaver (ME) Matt Weaver (ME) Brian Conway (ISE) Brian Conway (ISE) Rugwed Phatak Phatak (EE) (EE) Rugwed Faculty Mentor: Benjamin Varela (ME) Faculty Mentor: Benjamin Varela (ME)
Zagorski Forms Specialists, Inc Forms Specialists, Inc Zagorski � Drew Drew Zagorski Zagorski, Sr. is the , Sr. is the � inventor of OZ Saferooms Saferooms inventor of OZ � Continuously Poured, Steel Continuously Poured, Steel- - � Reinforced, Concrete Reinforced, Concrete Structures Structures � Tornado safe room Tornado safe room � � Fabricated on Fabricated on- -site site � � Located in Rochester, NY Located in Rochester, NY � � Primary market in Oklahoma Primary market in Oklahoma � Unharmed safe room after a direct hit from a TORNADO R-I -T OZ Saferooms Project # 04024
Project Description Project Description Project Objective: Analyze the structure to determine its survivability Project Objective: Analyze the structure to determine its survi vability � � � Finite Element Analysis (FEA) Finite Element Analysis (FEA) � � Develop sensor package to obtain experimental test data Develop sensor package to obtain experimental test data � Scope Limitations Scope Limitations � � � Budget = $2000 Budget = $2000 � � Time period = 20 weeks Time period = 20 weeks � � Will not analyze the structure Will not analyze the structure’ ’s door s door � Stakeholders Stakeholders � � � Families, Federal Emergency Management Agency (FEMA), RIT, local Families, Federal Emergency Management Agency (FEMA), RIT, local authorities authorities � and rescue workers and rescue workers Key Business Goals of Zagorski Key Business Goals of Zagorski Forms Forms � � � Testing will quantify stresses on structure Testing will quantify stresses on structure � � FEMA support FEMA support � � Consumers to buy product Consumers to buy product � R-I -T OZ Saferooms Project # 04024
Statement of Work Statement of Work Senior Design team 04024 shall deliver the following by May 21, 2004: 2004: Senior Design team 04024 shall deliver the following by May 21, � Mechanical Properties Mechanical Properties � � Determine mechanical properties of concrete by 3 Determine mechanical properties of concrete by 3- -point bending and point bending and � compression testing compression testing � Impact Test Impact Test � � Impact test on existing OZ Impact test on existing OZ Saferoom Saferoom � � Provide data and calculations from impact test Provide data and calculations from impact test � � Finite Element Analysis (FEA) Finite Element Analysis (FEA) � � FEA on three structures FEA on three structures � � FEA on FEA on Zagorski Zagorski Forms Forms’ ’ preliminary design of a 20 preliminary design of a 20’ ’x30 x30’ ’ structure structure � � Compare FEA and impact test results Compare FEA and impact test results � � Determine the conditions under which the structure will fail Determine the conditions under which the structure will fail � R-I -T OZ Saferooms Project # 04024
Mechanical Testing of Concrete Samples Mechanical Testing of Concrete Samples Experimental Procedure and Data Analysis Experimental Procedure and Data Analysis � Procedure Procedure � Data Analysis Data Analysis � � � ASTM C 39 compression Test ASTM C 39 compression Test � Modulus of Elasticity Modulus of Elasticity � � � ASTM C 78 ASTM C 78- -02 three 02 three- -point point � Poisson Poisson’ ’s Ratio s Ratio � � bending test bending test � Shear Modulus Shear Modulus � � Three samples will be tested Three samples will be tested � Each sample tested in the same Each sample tested in the same � � fashion for at three time periods after fashion for at three time periods after � Analysis of Variance Analysis of Variance being produced being produced � (ANOVA) (ANOVA) � 3 Days 3 Days � � Residual analysis of fitted Residual analysis of fitted � � 7 Days 7 Days � model model � 28 Days 28 Days � Significant differences Significant differences � � between levels between levels R-I -T OZ Saferooms Project # 04024
Mechanical Testing Plans Mechanical Testing Plans � Samples are set to arrive sometime during the week of Samples are set to arrive sometime during the week of � March 8 th th March 8 � Determine mechanical properties for more accurate Determine mechanical properties for more accurate � FEA FEA Mechanics Lab Spring Schedule Monday Tuesday Wednesday Thursday Friday 8-9am 9-10am 10-11am 11-12pm 348-03 348-04 12-1pm 1-2pm 2-3pm 348-01 348-02 3-4pm 4-5pm 5-6pm 6-7pm 3-Point Bending Setup 7-8pm R-I -T OZ Saferooms Project # 04024
Impact Test Impact Test Problem Statement Problem Statement � � � The purpose of this experiment is The purpose of this experiment is � to apply forces simulating those to apply forces simulating those imposed during an F- -5 tornado 5 tornado imposed during an F and measure the response of the and measure the response of the structure’ ’s roof s roof structure � Through experimental testing, Through experimental testing, � collect data to assess the OZ collect data to assess the OZ Saferoom Saferoom Possible Solutions Possible Solutions � � � Statically load structure Statically load structure’ ’s roof s roof � � Measure deflection with laser Measure deflection with laser � pointer pointer � Measure deflection with strain Measure deflection with strain � gauge gauge � Dynamically load structure Dynamically load structure’ ’s roof s roof � � Measure acceleration with Measure acceleration with Existing safe room in Macedon, NY � accelerometer accelerometer R-I -T OZ Saferooms Project # 04024
Impact Test Feasibility Impact Test Feasibility Feasibility Assessment (Impact Testing) ATTRIBUTES R1 Sufficient Skills R1 R2 Sufficient Equipment to launch projectiles 5 P3 R2 E1 Total Cost 4 3 E2 Cost of Assembly Concept 1 - 2 P2 E1 Accelerometer S1 Meeting Milestones 1 Concept 2 - Strain 0 T1 Ability to Implement Gauge P1 E2 Baseline - Laser Pointer T2 Documentation/Standards P1 Dynamic Loading T2 S1 P2 Projectiles T1 P3 Data Acquisition R-I -T OZ Saferooms Project # 04024
Impact Test Plan Solution Impact Test Plan Solution Impact load Impact load � � Concrete block made by sponsor Concrete block made by sponsor � � Crane used to drop block Crane used to drop block � � Accelerometer Accelerometer � � PCB Piezotronics Piezotronics Model 353B03 Model 353B03 PCB � � Data Acquisition Data Acquisition � � Provided by RIT Provided by RIT � � National Instrument Signal National Instrument Signal � � Conditioner SCXI 1531 and SCXI Conditioner SCXI 1531 and SCXI Chassis Chassis National Instrument PC interface card, National Instrument PC interface card, � � model 6052E model 6052E Labview Labview � � Safety Issues Safety Issues � � Cracking of concrete weight Cracking of concrete weight � � Accelerometer Accelerometer � � DAQ DAQ � � R-I -T OZ Saferooms Project # 04024
Impact Test Future Plans Impact Test Future Plans � Preliminary testing of accelerometer and DAQ Preliminary testing of accelerometer and DAQ � � Actual test date depends on Sponsor availability Actual test date depends on Sponsor availability � � Use data to calculate deflection Use data to calculate deflection � � Measure frequency response of structure Measure frequency response of structure � � Compare frequency response results with FEA Compare frequency response results with FEA � R-I -T OZ Saferooms Project # 04024
Finite Element Analysis (FEA) Finite Element Analysis (FEA) Mesh Deflection Stress Stress R-I -T OZ Saferooms Project # 04024
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