Utility Construction
This is the required first step before any excavation begins.
What is Dig Safe / utility locating?
These small diameter piles are used for underpinning and limited access.
What are micropiles?
This railway component distributes loads and provides drainage.
What is ballast?
This tunneling method excavates from the surface downward.
What is cut-and-cover?
This is required access spacing for safe trench egress.
What is ladders within 25 feet?
This system protects underground electrical lines using grouped conduit encased in concrete.
What is a ductbank?
Pile capacity comes from these two mechanisms.
What are end bearing and skin friction?
This marine structure keeps water out of the work area.
What is a cofferdam?
This machine provides continuous excavation and support underground.
What is a Tunnel Boring Machine (TBM)?
This zone alerts drivers to upcoming work.
What is the advance warning area?
This trenchless method allows curved pipe installation under obstacles like roads.
What is Horizontal Directional Drilling (HDD)?
This type of hammer is most effective in granular soils.
What is a vibratory hammer?
This airport surface treatment improves friction and drainage.
What is grooving?
This excavator attachment can be used to cut steel and rebar.
What is a shear?
This zone provides space between workers and traffic.
What is the buffer zone?
This method requires straight alignment and uses hydraulic jacks to push pipe sections.
What is pipe jacking?
This term describes when a pile stops advancing under hammer blows.
What is refusal?
This allows for safe turns on curved sections of rail
What is Superelevation?
This bridge deck removal method utilizes controlled lifts of sections.
What is slabbing?
This engineered system allows vertical excavation in deep trenches using panels and posts.
What is a slide rail system?
This is completed after installation to verify utility location and elevation.
What are as-built drawings?
These two materials are commonly used for slurry in drilled shaft construction
What is Bentonite and Polymer?
These instruments measure runway smoothness to strict tolerances.
What are profilographs / laser leveling systems?
This method is preferred in soft ground due to controlled face pressure.
What is an Earth Pressure Balance TBM?
This document outlines overall traffic management strategy.
What is a Traffic Management Plan (TMP)?