Laserfiche WebLink
U <br />TABLE A.6 <br />Fracture Spacing Descriptors <br />JOINT OR FRACTURE <br />SPACING DESCRIPTOR <br />TRUE SPACING <br />Extreme) wide) s aced Greater than 10 ft >3 m <br />Ve wide) s aced 3 to 10 ft 1 to 3 m <br />Wide) s aced 1 to a ft 300 mm to 1 m <br />Moderatel s aced 0.3 to 1 ft 100 to 300 mm <br />Close) s aced 0.1 to 0.3 ft 30 to 100 mm) <br />Very closely spaced Less than 0.1 ft (<30 mm) <br />TABLE A.7 <br />Fracture Openness Descriptors <br /> <br />DESCRIPTOR OPENNESS <br />Ti ht No visible se aration <br />Sli htl O en Less than 0.003 ft 1/32 in <1 mm) <br />Moderatel O en 0.003 to 0.01 ft 1132 to 1/8 in 1 to 3 mm <br />O en 0.01 to 0.03 ft 1/8 to 3/8 in 3 to 10 mm) <br />Moderatel Wide 0.03 ft 3/8 in to 0.1 ft 10 to 30 mm <br />Wide Greater than 0.1 ft (> 30 mm) [record actual openness] <br />TABLE A.8 <br />Fracture Roughness Descriptors <br /> <br />DESCRIPTOR CRITERIA <br />Ste ed Near-normal steps and ridges occur on the fracture surface. <br /> <br />Rou h Lar e, an ular as erities can be seen. <br /> <br />Moderatel Rou h As erities are clear) visible and fracture surface feels abrasive. <br /> <br />Slightly Rough Small asperities on the fracture surface are visible and can be felt. <br /> <br />Smooth No asperities, smooth to the tough. <br /> <br />Polished Extremely smooth and shiny. <br />GE! Consultants, Inc. <br />