Meet the DBI Pros Summit October 25, 2006 Amy Lee, Acting Director HIGH RISES AND THE CHANGING SAN FRANCISCO SKYLINE

2 555 California Street

3 199 Fremont Street

4 690 Market Street

5 Structural Engineering Challenges Design structural system to carry gravity and lateral loads – load path Design for force Design for drift and displacement Detailing requirements MEET THE DBI PROS

6 Wind design Code prescriptive Wind tunnel testing Comfort MEET THE DBI PROS

7 Seismic Design Expectations of performance for code- prescriptive design Frequent earthquake Moderate earthquake Maximum credible earthquake

8 SFBC Section … The building official may approve any such alternate, provided the building official finds that the proposed design is satisfactory and complies with the provisions of this code and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in suitability, strength, effectiveness, fire resistance, durability, safety and sanitation. …

9 AB-083: Guidelines for the Structural Review of New Tall Buildings Three step analysis Structural peer review Construction quality assurance

10 Spear Street Condos

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14 1 Rincon Hill

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16 Thank you for attending ! We value you and your opinion We want you to feel that we’re here to help assist you Our goal is to improve the value of our services to better serve you We’ve been listening to you telling us what’s important New improvements are on the horizon Please fill out evaluation forms. Thank you! MEET THE DBI PROS

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