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Osborn EngineeringOsborn Engineering
MedMart Project
Convention Center Foundation
Analysis
March 5, 2009
Osborn BackgroundOsborn Background• Founded in 1892/ Founded in 1892/
Cleveland FirmCleveland Firm
• Commitment to Commitment to Client-Oriented Client-Oriented ServiceService
• Staff Size: 70 Staff Size: 70
• Engineering Engineering Disciplines:Disciplines:
– Structural Structural – CivilCivil – ElectricalElectrical– MechanicalMechanical– Fire ProtectionFire Protection– Energy EfficiencyEnergy Efficiency
• Notable Notable Cleveland Project Cleveland Project ExperienceExperience
Osborn ExperienceOsborn Experience2005 & 2008 Mall 2005 & 2008 Mall Site ConceptsSite Concepts
Convention Center Convention Center Studies Since 1998Studies Since 1998
Analysis of Society Analysis of Society For Savings Bank For Savings Bank RenovationRenovation
Cleveland Browns Cleveland Browns StadiumStadium
Progressive FieldProgressive Field
Williard Park Garage Williard Park Garage AnalysisAnalysis
Burke Airport Burke Airport VibrationVibration
Scope Of The StudyScope Of The StudyProject Scope
• Understand the MMPI Concept
• Soil and Material Testing
• Analyze Existing Foundation System
• Determine the Determine the Feasibility of Feasibility of Reusing Existing Reusing Existing FoundationFoundation
• Analyze Potential Analyze Potential Impact on Impact on Adjacent Adjacent BuildingsBuildings
Study ProcessStudy ProcessStudy Process
• Workshops with MMPI, County & City
• Independent Soils and Material Testing
• Extensive Review of Existing Convention Center
• Independent Review of Project Approach
• Develop Our Own Design
• Determine Feasibility of Reusing Foundation
• Assess Risks
Significant FindingsSignificant Findings
Condition andStrength of Mat Foundation is Very Sound
•Concrete Testing Very Positive
•Chloride-Ion Results Not A Problem
•Reinforcing Steel Looks New
Significant FindingsSignificant Findings
Soil Conditions Are As
Expected
• Cleveland’s Blue Clay
• 150 Ft. To Bedrock
• Can Continue To Support Convention Center
Significant FindingsSignificant Findings
No Water Concerns
• Static Water Table 25 Ft. Below Foundation
• Existing Dewatering System Is Efficient
• No Water Infiltration
No Geyser!
Mat Foundation Can Support
New Structure
• New Loads Are Less Than Existing Loads
• Can Use Footers Or Caissons
• Recommended To Use Caissons
• Cost Premium Of < $2 Mil.
Significant FindingsSignificant Findings
Significant FindingsSignificant Findings
Very Little Risk To Surrounding
Buildings
• Re-use Continues To Support Surrounding Areas
• Recommend Wall Anchors
Significant FindingsSignificant Findings
Existing Structure
Supporting Lakeside Ave. Can Continue To Be Used
Mall Level Can Be Maintained Within Existing Parameters, or
Less
• Top of Existing Wall Around Mall
Osborn EngineeringOsborn Engineering
MedMart Project
Convention Center Foundation
Analysis
March 5, 2009