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Osborn Engineering

Osborn Engineering. MedMart Project Convention Center Foundation Analysis March 5, 2009. Osborn Background. Founded in 1892/ Cleveland Firm Commitment to Client-Oriented Service Staff Size: 70 Engineering Disciplines: Structural Civil Electrical Mechanical Fire Protection

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Osborn Engineering

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  1. Osborn Engineering MedMart Project Convention Center Foundation Analysis March 5, 2009

  2. Osborn Background • Founded in 1892/ Cleveland Firm • Commitment to Client-Oriented Service • Staff Size: 70 • Engineering Disciplines: • Structural • Civil • Electrical • Mechanical • Fire Protection • Energy Efficiency • Notable Cleveland Project Experience

  3. Osborn Experience 2005 & 2008 Mall Site Concepts Convention Center Studies Since 1998 Analysis of Society For Savings Bank Renovation Cleveland Browns Stadium Progressive Field Williard Park Garage Analysis Burke Airport Vibration

  4. Scope Of The Study Project Scope • Understand the MMPI Concept • Soil and Material Testing • Analyze Existing Foundation System • Determine the Feasibility of Reusing Existing Foundation • Analyze Potential Impact on Adjacent Buildings

  5. Study Process Study 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

  6. Significant Findings Condition andStrength of Mat Foundation is Very Sound • Concrete Testing Very Positive • Chloride-Ion Results Not A Problem • Reinforcing Steel Looks New

  7. Significant Findings Soil Conditions Are As Expected • Cleveland’s Blue Clay • 150 Ft. To Bedrock • Can Continue To Support Convention Center

  8. Significant Findings No Water Concerns • Static Water Table 25 Ft. Below Foundation • Existing Dewatering System Is Efficient • No Water Infiltration No Geyser!

  9. Significant Findings 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.

  10. Significant Findings Very Little Risk To Surrounding Buildings • Re-use Continues To Support Surrounding Areas • Recommend Wall Anchors

  11. Significant Findings Existing Structure Supporting Lakeside Ave. Can Continue To Be Used

  12. Mall Level Can Be Maintained Within Existing Parameters, or Less • Top of Existing Wall Around Mall

  13. Osborn Engineering MedMart Project Convention Center Foundation Analysis March 5, 2009

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