Operator's Manual

PlanningtheBorePath
Beforesettingupthejobsite,youneedtoplanthe
borepath,includingthefollowing:
g034676
Figure27
1.Boreentry
4.Obstacle
2.Beginning-of-bore-at-depthpoint5.End-of-bore-at-depthpointandboreexit
3.Boredepth
•Boreentry
Thisiswhereyousetupthemachineandthedrill
bitenterstheground.Dependingonconditions,
thiswilltypicallybesetback9to15m(30to50ft)
fromthebeginning-of-the-bore-at-depthpoint.
•Beginning-of-bore-at-depthpoint
Thisisthepointwhereyouwanttheutilityline
orpipetoendafterinstallationiscomplete.Itis
typicallythepointatwhichtheborelevelsout
andbeginstoborehorizontally.Thismaybethe
sameastheentrypoint,oryoumaydigaseparate
depth-gaugeholeatthispoint(Figure27).
•Boredepth
Thisthedepthatwhichyouwanttoinstalltheutility
lineorpipe.Thismachineisdesignedprimarilyfor
installationsbetween1and3m(3.5to10ft).
•Obstaclesinthepath
Itisimportanttoknowwheretheknownobstacles
arethatyouwillneedtosteeraroundorunder
beforestartingsothatyoucanplanwheretobegin
steeringpriortoreachingtheobstacle.
•End-of-bore-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.
DeterminingtheBore-EntryPoint
Oneofthemorechallengingaspectsofplanningthe
borepathistodeterminetheentrypointofthebore.
Youneedtotakethefollowingtraitsintoaccountwhen
determiningthelocationoftheentrypoint:
•Boredepth
Thisisthedepthatwhichyouwanttoinstall
theutilitylineorpipe.Thismachineisdesigned
primarilyforinstallationsbetween1and3m(3.5
to10ft).
•Pipeandmaterialexibility
The3m(10ft)pipesusedonthismachinecan
extoan8%pitchoverthelengthofthepipe;
thisequatestoabendofnomorethan20cm(8
inches)offastraightpath(Figure28).
Important:Ifyousteerthepipetobend
sharperthan20cm(8inches)perpipe,you
maydamagethepipesandtheirconnections.
Youmustalsomakesteeringchanges
graduallyovertheentirelengthofeachpipe.
Ifyousteerthewhole20cm(8inches)in
only25to50cm(1to2ft)oftravel,youwill
permanentlydamagethepipes.
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