Question
Advantages of casings for mini-piles?
Answer
Left-in casings for mini-piles have next advantages as follows-
(i) recover resistance to corrosion of main bars;
(ii) Offer additional restraint against lateral buckling;
(iii) Improve grout quality by preventing imposition of groundwater during concreting;
(iv) Avoid happening of necking during lifting up of casings during concreting.