An excavation is the first irreversible decision on most commercial sites. Once a footing trench, a basement level, a pit for a vault or a mat foundation has been cut, the shape of the hole fixes where concrete, utilities and drainage will go for the life of the building. We plan excavation as a sequence of controlled steps, with surveyed limits, spoil locations, shoring or slope requirements and inspection hold points written down before the first bucket of material moves.
In Midland the digging itself is often easier than the paperwork around it. The ground is generally flat and accessible, but caliche layers vary in depth and hardness from one lot to the next, buried lines are common near older streets and lease roads, and the cut has to be coordinated with the ready-mix schedule so a footing is not left open to a storm or a heat wave. We coordinate the excavation partners and the testing firm, keep the owner's rep informed and hand the pit or trench to the concrete trades in a condition the engineer has accepted.
Timing the cut so the concrete does not wait
Keep an excavation open only as long as the work truly requires. We stage forms, rebar and the first ready-mix delivery so that the cut, the inspection and the placement follow each other in days, not weeks. In this climate a long-open footing can dry, collapse at the edge or collect runoff from a single downpour, and each of those problems costs a day of rework.
Spoil handling is part of the schedule too. Material we can reuse as backfill is stockpiled where it will not block the work, while unsuitable material is trucked away on a planned route. We tell the owner's rep how many haul trips to expect, because a busy week for the dump trucks is also a busy week for the neighbors, the city and the roads around the site.
Digging in a county built on oil and rail
Midland County produces more oil than any other county in Texas, and the Railroad Commission counted 6,602 producing wells there in September 2020, with the Spraberry Trend lying under much of the county. That history means excavation here frequently meets old pipelines, buried flowlines, abandoned pads and the base material of lease roads. Calling locates early and potholing before a cut are routine steps on our schedule, and we keep the records with the project file.
The city itself began in June 1881 as Midway Station, a Texas and Pacific Railway stop roughly halfway between Dallas and El Paso. A former rail line still runs toward Odessa, and older rail corridors still shape where utilities and easements lie. Downtown lots in particular can hold surprises from more than a century of development, so we allow time for investigation before a deep cut begins.
What each building asks of the hole
Footings for tilt-wall warehouses are shallow, repetitive and long, so the trench or pad excavation is judged by straight lines and consistent depth. A hospital or an office tower is a different problem, with deeper cuts for elevator pits, mechanical rooms and utility connections, and with neighbors close enough to feel vibration. We plan the sequence to match.
Aviation buildings have their own constraints. The Midland airport has four asphalt runways, the longest 9,501 feet by 150 feet, and hangars near them have large doors, deep foundations at the door line and drainage that must be set before slab work begins. Our aircraft hangar page explains how excavation and slab sequences fit together on those projects.
Soil, water and what lies beneath
Before a pit is dug, we want the geotechnical report, a utility survey and a clear picture of where groundwater and caliche might appear. Hard layers can slow production dramatically, and when they are expected we raise the topic of rock and hard ground excavation in the first meeting so the right equipment is booked.
Soft or disturbed subgrade at the bottom of the cut is the other common finding. If the engineer rejects it, the area is deepened and rebuilt with engineered material, a process covered under over-excavation and recompaction. We keep the time for that work in the schedule so a surprise does not turn into a delay.
Keeping people out of trouble in the trench
Cuts beyond a few feet deep call for sloping, benching, shoring or a trench box, with a designated competent person inspecting them every day and after weather changes. We require our partners to document that inspection and keep ladders, spoil piles and equipment where the rules say they belong. Edge protection and barricades go up before the first worker enters.
Utility strikes are the second hazard. Locates are confirmed, hand digging is used near marked lines and the crew is briefed on what is below. We also keep traffic control in view on projects near public roads, because a cut beside a street is both an excavation hazard and a traffic hazard. Each of these steps is written into the site plan the owner approves.
How we run an excavation package
Our approach is to define the hole precisely, assign each party a role and watch the weather. We prepare a one-page plan showing limits, depths, slopes, spoil, haul route, inspections and who calls whom. The plan is shared with the general contractor, the testing firm, the surveyor and the concrete subcontractor.
During the work we compare each cut with the survey, record depths at set stations and photograph the bottom before anything is placed. If a design change comes through, the plan is updated and everyone gets the revision. For trenching with pipe or conduit, the work continues under our trenching and backfill procedures, and owners in the energy sector often pair it with the work described for oil, gas and midstream clients.
Send the foundation plan and the utility locates
Share the foundation or utility drawings, the geotechnical report and your target pour date. We will return an excavation sequence with spoil handling, inspection points and the date the open work is ready for forms and reinforcing.
Common Questions
How far ahead should I call for utility locates?
Call as soon as the plans are firm, and certainly before mobilization. Locating marks the lines it knows about, but older or private lines may not be on the record, so we pair locates with potholing on critical routes and leave extra time for that work.
How long can an excavation stay open before we pour?
The honest answer depends on depth, soil and weather. For a footing we aim to inspect and place within a couple of days. For deeper cuts we protect the edges, keep runoff out and re-inspect before reinforcing is set.
Who pays for unsuitable material found in the cut?
The contract usually defines unit prices for over-excavation and replacement. We flag the finding the same day, document depth and extent, and ask the engineer for direction so the owner can see the quantity before it is priced.
Will excavation slow down if we hit caliche?
It can. Caliche ranges from soft and rippable to hard and cemented, and equipment selection changes with it. We plan for both, and if the hard layer is heavier than expected we bring in the equipment described on our rock and hard ground page.
Can you excavate and pour in the same week?
Often yes, on footings and small pads, provided the inspection is scheduled and the ready-mix is booked. On larger sites we phase the work so one area is being formed while the next is still being cut.