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Prop Soil nail
Prop Soil nail
Method Statement for Installation of Soil Nails with for Slope
Stabilization 1.0. MATERIA !SE" The material #sed for the prefabricated horizontal drains incl#de$ Test Nails$ %& nos.' a' Two sets of Test nails sho#ld be installed and completed the P#ll o#t test before constr#ct the Soil nail.
Soil Nails $ %(0 nos.' a' )*0 reinforcement bars+ threaded and ,oint #sin- co#plers. b' 10/10mm MS plate and locn#t for the head. c' Nonshrin cement -ro#t d' P23 spacers e' Tremie 4ro#t t#be 5 pol6pipe 78 or 18 %remo9able'
Soil Nail :ead$ %(0nos.'
&.0. Material Speci;cation 4R da6s and the remainin- c#bes at &? da6s after castin-. The characteristic stren-th of the -ro#t shall be &1 N@mm& and (0 N@mm& at > da6s and &? da6s.
&.1. Material Speci;cation 5 Steel Reinforcement ar @ R3 The main steel component of a soil nail shall consist of a top anchora-e and an a/ial steel component+ which are desi-ned to transmit the p#llin- and shearin- forces deri9ed from the slidin- forces alon- the potential fail#re s#rface to the f#rther -ro#nd be6ond the fail#re s#rface.
A/ial steel component consistin- of hot rolled deformed hi-h tensile bar with a minim#m 6ield stress of 00 N@mm&. The top se-ment of the soil nail bar is a threaded bar to recei9e the loc n#ts and bearin- plates. All steel reinforcement bars and R3 deli9ered to site shall possess a 9alid mill certi;cate. Three %(' samples of )*0 rebars shall be sent for tensile testin- to con;rm the stren-th.
&.&. Shotcretin- or -#nitin- is a 9ersatile b#ildin- techni=#e. It is applied witho#t forms for horizontal+ 9ertical and o9erhead s#rfaces of free shape in an6 desired thicness. 3ement #sed $
(.0. MET:<"
(.&. "RIIN4 INSTAATI
each and allowed to set before appl6in- the ne/t la6er. The ;nished s#rface shall be ro#-h cast nat#ral shotcrete@ -#nite ;nish. h' 3#rin- shall be b6 water spra6 at least once a da6 for * da6s.
*.0 "raina-e ors
