The consideration site drilling known geological data are shown in Table 1, determine the site category.
Extracted text: 6. The consideration site drilling known geological data are shown in Table 1, determine the site category. Bottom depth of upper Thickness of soil Name of rock and soil Shear wave velocity of layer(m) layer(m) soil layer(m/s) 2.0 2.0 Miscellaneous filled soil 210 5.50 3.50 Silty Soil 280 9.50 4.00 Medium sand 360 15.50 6.00 Gravel sand 540