Operator's Manual

Table Of Contents
PlanningtheBorePath
Beforesettingupthejobsite,youneedtoplantheborepath,includingthefollowing:
g218955
Figure40
1.Boreentry
4.Obstacle
2.Beginningofbore-at-depthpoint5.Endofbore-at-depthpointandboreexit
3.Boredepth
Boreentry
Thisisthelocationwhereyousetupthemachine
andthedrillbitenterstheground.Depending
onconditions,thiswilltypicallybesetback
9to15m(30to50ft)fromthebeginningof
the-bore-at-depthpoint.
Beginningofbore-at-depthpoint
Thisisthepointwhereyouwanttheutilityline
orpipetoendafterinstallationiscomplete.Itis
typicallythepointatwhichtheborelevelsout
andbeginstoborehorizontally.Thismaybethe
sameastheentrypoint,oryoumaydigaseparate
depth-gaugeholeatthispoint(Figure40).
Boredepth
Thisthedepthatwhichyouwanttoinstallthe
utilitylineorpipe.
Obstaclesinthepath
Youwillneedtosteeraroundorunderobstacles.
Itisimportanttoknowwheretheseobstacleswill
bebeforestartingsothatyoucanplanwhereto
beginsteeringpriortoreachingtheobstacle.
Endofbore-at-depthpoint
Thisisthepointwhereyouwanttheutilitylineor
pipetobeginafterinstallationiscomplete.Often
thiswillalsobetheboreexit.
Boreexit
Thisisthelocationwherethedrillheadwillexit
thegroundandthepointatwhichyouwillpullthe
utilitylinesorpipeintothebore.Ifthispointwill
beatthesurfaceinsteadofatinstallationdepth,
youwillneedtodeterminethedistancefromthe
end-of-bore-at-depthlocationneededforsteering
thedrilltothesurface,typically9to15m(30to50
ft)fromtheend-of-the-bore-at-depthpoint.
DeterminingtheBoreEntryPoint
Oneofthemorechallengingaspectsofplanningthe
borepathistodeterminetheentrypointofthebore.
Youneedtotakethefollowingtraitsintoaccountwhen
determiningthelocationoftheentrypoint:
Boredepth
Thisthedepthatwhichyouwanttoinstalltheutility
lineorpipe.Thismachineisdesignedprimarilyfor
installationsbetween1and3m(3.5to10ft).
Pipeandmaterialexibility
The3m(10ft)pipesusedonthismachinecan
extoan8%pitchoverthelengthofthepipe;
thisequatestoabendofnomorethan20cm(8
inches)offofastraightpath(Figure41).
Important:Ifyousteerthepipetobend
sharperthan20cm(8inches)perpipe,you
maydamagethepipesandtheirconnections.
Youmustalsomakesteeringchanges
graduallyovertheentirelengthofeachpipe.
Ifyousteerthewhole20cm(8inches)in
only25to50cm(1to2ft)oftravel,youcan
permanentlydamagethepipes.
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