Question

Paragraph Styles Answer the following questions based on chapter 18 of the Building Code. 1. A five-foot rock core was taken, based on the sketch of the core, Recovery a. What is the Recovery(REC)? b. What is the Rock Quality Designation (RQD)?h c. What is the allowable foundation bearing pressure in tsf? Display Settings Focus / DA

Answer 1

a) Recovery ? core Recovery (CR) CR = 6" +9"+q" + 1"+1"+6"+ "+11"+8" - X 100 X too = 86-67% CR = Sample Recovered Toral length of core un X 100 or equal b) R&D = Rock quality besignation For R&D samples of length more than loch are only considered 1. ROD & Samples with length >=10cm vino Total sun = 6 +9"+9"+6"+11" 48" 51 ROD & 81.66% / Хтоо c) As per CR & ROD Values Rock can be classified as Hard sound rock. Casper Nyc code) .. Allowable Bearing pressure - 6otst. 60 tsf