DRILLED MINI PILING

Drilled Piling System : Branlows specialise in providing solutions to foundation problems.  Our drilled mini piling expertise helps overcome difficult operational conditions whilst undertaking  piling, drilling, grouting and ground anchor contracts.  Difficult operational conditions include, restricted access, limited headroom, environmental restrictions and difficult ground.  Over the years, we have been involved with many national and international companies in providing expertise and practical knowledge.     

PRODUCT DESCRIPTION

Drilled mini piling encompasses a variety of techniques.  Typical systems include down-the-hole hammer (DTH) or overburden drilling systems (ODS). Procedures often tailored to suit particular ground conditions.  Range includes rotary percussive methods and ODS equipment with either eccentric or concentric drill heads.  Temporary casing employed as required by ground conditions.  Systems with thin walled permanent casing and percussively installed hollow stem reinforcing bars are also available in a variety of diameters for permanent and temporary works.  A variety of flush  mediums available including air, water, foam, grout or mud.

Advantages.

• Suitable in problem ground where conventional augered or driven systems are impractical

• Suitable for drilling in rock formations

• Can provide significant tensile capacity

• Able to overcome most types of ground obstructions (natural or unnatural)

 Drawbacks

• Spoil arisings

• Unit costs sometimes greater than conventional bored or driven systems

Ground Conditions

• Suitable for problem sites with difficult ground conditions where conventional auger bored or driven systems are inappropriate

• Also highly suitable for rock formation drilling

• Typical uses include installation through problem overburden to form a rock socket in underlying strata