There are several publications that list average bond stresses between grout and rock for differing types of rock, but none of the information I have at my disposal(FWHA & PTI) correlates grout compressive strength of grout to bond stress.
Intuitively, it seems like there must be a minimum...
We are being asked to design micropiles to IBC 2006 code.
IBC 2006 Sect. 1808.2.7 requires that pile splices develop 50% of the pile capacity in bending.
We'd like to drill the low headroom micropiles utilizing male to female threaded casing. Does anyone know of a resource or method of...