Soil Nails: Perform soil nail design and construction, including nail installation, grouting, shotcrete, and wall construction, in accordance with the current Soil Nail Wall provision, except as modified herein. Soil nail proof testing shall be performed in accordance with the Soil Nail Wall provision. Please note that hollow bar soil nails and permanent shotcrete facing may be used to complete work for this contract. Please note that the minimum permanent shotcrete facing thickness is 6” for work for this contract. Micro piles: Perform micro pile design and construction in accordance with the current Micro piles provision, except as modified herein. For bidding purposes, define a micro pile as constructed with a fully grouted 4” outside diameter, ½” wall thickness, 80 ksi casing extending from the top of the micro pile to the top of weathered rock or rock and a #8 Grade 75 all-thread bar extending from the bottom of the bond zone to above the top of micro pile, as necessary. Please note that mill secondary casing may be used to complete work for this contract. Reinforced Shotcrete: Construct reinforced shotcrete with a minimum thickness shown in acceptable submittals with reinforcement a minimum of 3 inches from the ground surface...
