1. SDC’s and Detailing Requirements Locations with Different Soils 1000 year return period Derrell Manceaux, FHWA

2. Zone 1-SDC “A” Zone 2-SDC “B” Zone 3-SDC “C” Zone 4-SDC “D” Seismic Design Category (zone) (500 year Return Period)

3. SITE CLASS “B” Zone 1-SDC “A” Zone 2-SDC “B” Zone 3-SDC “C” Zone 4-SDC “D” Seismic Design Category (zone) (1000 Year Return Period)

4. Zone 1-SDC “A” Zone 2-SDC “B” Zone 3-SDC “C” Zone 4-SDC “D” SITE CLASS “C” Seismic Design Category (zone) (1000 Year Return Period)

5. Zone 1-SDC “A” Zone 2-SDC “B” Zone 3-SDC “C” Zone 4-SDC “D” SITE CLASS “D” Seismic Design Category (zone) (1000 Year Return Period)

6. Zone 1-SDC “A” Zone 2-SDC “B” Zone 3-SDC “C” Zone 4-SDC “D” SITE CLASS “E” Seismic Design Category (zone) (1000 Year Return Period)

7. LRFD Seismic Details Required (Zone 1- S D1 > 0.10 g) Site Class B Soil “B” rock

8. LRFD Seismic Details Required (Zone 1S D1 > 0.10 g) Site Class C Soil “C” N>50 (stiff soil)

9. LRFD Seismic Details Required (Zone 1 S D1 > 0.10 g) Site Class D Soil “D”15<N<50 (soft soil)

10. Site Class E Soil “E” N<15 (poor soil) LRFD Seismic Details Required Zone 1 S D1 ( > 0.10 g)