From raw land to standing structures — site development, the ground beneath, and the skeleton above.
Civil & structural engineering spans the full life of a built project: preparing the land (grading, stormwater, utilities, roads), understanding what the ground can support (geotechnical investigation and foundation design), and designing the structure itself (steel, concrete, wood, and masonry systems that carry gravity, wind, and seismic loads safely to the ground).
Civil engineering is one of the oldest and broadest engineering disciplines. Site (or land development) engineers turn raw land into buildable, permit-ready parcels — grading and earthwork, stormwater and drainage, road and utility layout, and erosion control. Geotechnical engineers investigate the soil and rock beneath a site (borings, sampling, lab and in-situ testing) and turn that data into bearing capacity, settlement, and slope-stability recommendations that foundations are designed against. Structural engineers then design the load-carrying skeleton itself — sizing beams, columns, connections, and lateral systems in steel, concrete, wood, or masonry so the structure resists every required load combination with adequate strength and stiffness.
These three sub-disciplines are inseparable in practice: a site's grading plan sets the pad elevations a structure sits on, the geotechnical report sets the allowable bearing pressure and lateral earth pressures the structural design must satisfy, and the structural foundations transfer everything back into the soil the geotechnical engineer characterized. All three are governed by a dense layer of codes — ASCE 7 for loads, the IBC as the overall framework, AASHTO for roadway geometry, and material standards like AISC 360 (steel), ACI 318 (concrete), the NDS (wood), and TMS 402/602 (masonry) — and all three require Professional Engineer (PE) licensure to stamp drawings for the public, via the FE exam, qualifying experience, and a discipline-specific PE exam (Structural work sometimes also requires the separate 16-hour SE exam).
Earthwork and cut/fill balancing, hydrology and storm sewer design, and the geometric layout of roads, parking, and utilities.
Subsurface exploration and soil classification, bearing capacity and settlement analysis, and shallow/deep foundation design.
Analysis of slopes and excavations, lateral earth pressures, and the design of retaining walls and shoring systems.
Beams, columns, connections, and detailing in steel (AISC 360) and reinforced/prestressed concrete (ACI 318).
Light-frame and masonry design (NDS, TMS 402/602) plus the braced frames, moment frames, and shear walls that resist wind and seismic loads.
Potable water mains, sanitary sewer collection, and connections to municipal infrastructure.
They are tightly interdependent stages of the same project: site engineers grade the land and set pad elevations, geotechnical engineers determine what the soil beneath those pads can support, and structural engineers design the building or bridge that sits on it — using the geotechnical bearing capacity and lateral-pressure recommendations as direct design inputs. Combining them mirrors how these disciplines actually collaborate on a real project.
A site engineer grades land, designs stormwater systems, and lays out roads and utilities. A geotechnical engineer investigates soil and rock and recommends foundation types, bearing pressures, and slope-stability measures. A structural engineer sizes the beams, columns, connections, and lateral systems that carry loads to those foundations, producing stamped calculations and drawings that comply with the building code.
Geotechnical engineers focus on the ground — soil and rock behavior, bearing capacity, settlement, and slope stability — and recommend what the soil can support. Structural engineers design the building or bridge itself: foundations, columns, beams, and load paths, using the geotechnical recommendations as direct constraints on their design.
Yes, to stamp and seal engineering documents for the public. The path is an ABET-accredited degree, passing the FE (Fundamentals of Engineering, typically FE Civil) exam, several years of qualifying experience under a licensed PE, and then passing a discipline-specific PE exam — PE Civil (with a Structural, Geotechnical, or other depth module), or the separate 16-hour SE exam some jurisdictions require for significant structures.
Civil 3D and similar tools for grading, drainage, and roadway design; geotechnical analysis software (e.g. slope-stability and bearing-capacity tools) for foundation recommendations; and structural analysis/design software plus Revit or similar BIM tools for steel, concrete, and connection design and coordination with architects and other trades.