trenchless drilling Terms beginning with "H"
- H2S
- HAB
- Hammer Plate
- Hammer Testing
- Hand Crank
- Hand Excavation
- Hand Shield
- Hand Tunneling
- Hand Wheel
- Hard Rock Drilling
- Hardpan
- Hat Liner Packer
- Hazardous Material Container
- HDB
- HDD
- HDD
- HDPE
- Heading
- Headwall
- Headwaters
- Heat Exchanger Surface
- Heave
- Heaving
- Heavy HDD Rig
- Heavy Wall Pipe
- Helicoid
- Helix Angle
- HGL
- HIC
- High Density Polyethylene (HDPE)
- High Pump Pressure
- High-Pressure Plug
- Highway Drain
- Holding Tank
- Hole Deviation (msHD, msID)
- Hole Deviation Log
- Holiday
- Holistic Repair
- Hoop Stress
- Horizontal Auger Boring (HAB)
- Horizontal Deviation (msHD)
- Horizontal Directional Drilling (HDD)
- Horizontal Earth Boring
- Horizontal Earth Boring Machine
- Horizontal Rotary Drilling
- Host Pipe
- House Connection
- House Connection Manhole
- Hum Detector
- Hydraulic Capacity
- Hydraulic Cleaning
- Hydraulic Fracturing Test
- Hydraulic Gradient (HGL)
- Hydraulic Jack
- Hydraulic Pipe Ramming
- Hydraulic Radius
- Hydraulic Radius Calculation
- Hydraulic Radius Equation
- Hydro Excavation
- Hydro Hammer
- Hydro-Jetting
- Hydrofracture
- Hydrogen Blistering
- Hydrogen Induced Cracking (HIC)
- Hydrogen Stress Cracking
- Hydrogen Sulfide (H2S)
- Hydrolock
- Hydrostatic Design Basis (HDB)
- Hydrostatic Test
- Hydrovac Excavation
- Hypochlorite
