An 8 storey building located in Dubai had undergone some form of movement within
the basements leading to cracked columns, walls and slabs. Active water ingress
penetrated through cracks in the basement slab and walls. Cracks to the columns
were initially identified in 2012 and were repaired in mid 2014 and appear not to
have re-cracked since.
A geotechnical and structural assessment of the building was carried out and
concluded that structurally the building was within the limits of acceptance. However,
the consulting engineer carried out a detailed design to enhance the stability of the
structure, which involved a combination of grouting and micropiling.
Some, 312No. 15.0m TITAN 40/20 micropiles (4670m) and over 580No.3.0m tube a
manchette steel grouting tubes were both successfully installed using the preventer
system.
This paper examines construction processes involved in installing the micropiles
using the TITAN preventer system.
Subjects: micropile installation, preventer system
Author: Sean Beirne-Lewis
Publisher: ISM, DFI, ADSC