PERMFILE115275

• Permit No: C1981041A
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Doc Name: Subsidence Appendices
• Section_Exhibit Name: TAB 20 APPENDIX 20-4 TO APPENDIX 20-9
• Media Type: D
• Archive: Yes

• TABLE 5. Maximum Predicted Tower Foundation
bsidence Effects fro
S
R
d Pill
Mi
i
u m oom an ar
n
ng
Mining Single Room & Pillar Panel Multiple Room ~ Pillar Panels
Depth Potential Diagonal Tilt Potential Diagonal Tilt
(ft) Shortening Extension (min) Shortening Extension (min)
(ft) (ft) (ft) (ft)
1200 0.10 0.05 12,8 0,07 0.10 24.5
1500 0,07 0.03 7.4 0,06 0.08 20.8
1600 0,07 0.02 6.3 0,06 0.08 19.9
2000 0,04 0.01 3.2 0,05 0.07 16.8
2400 0,03 0.01 1.9 0,04 0.06 14.6

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