The utilities under a building pad are the part of the job nobody sees after closeout and everybody pays for if they are wrong. Every pipe and cable run beneath a pad, whether it carries domestic water, wastewater, stormwater, fire flow or power, must be laid, signed off and buried before the first slab form goes up, and each run answers to a different inspector. On a Midland site the real work is getting those inspections in order.
Concrete Contractors of Midland approaches site utilities as the schedule that sits underneath the concrete. Our coordination covers trenching and installation of pipe and cable alongside the concrete specialists’ work on encasements, thrust blocks, vault bases and collars. It also includes the slabs and paving above those systems.
Owners and general contractors usually come to us because they want one party keeping the sequence straight. We write the utility sequence into the same pour calendar that governs the slabs, so a late sewer test shows up as a moved pour date, not a surprise on the morning of the pour.
Specifications, permits and inspections
Utility work in Midland answers to the project drawings, the city or utility owner's standard details and the adopted building code. A private site may have a water tap approved by the city, a sewer connection inspected by the city and a fire line reviewed by the fire marshal. Each approval has its own lead time, and the permit office will not release a connection until the paperwork is complete.
We read the utility sheets with the civil engineer's notes and list every inspection, test and witness requirement. Pressure tests, compaction tests, video inspections and bedding approvals all become entries in the schedule. When an inspector needs forty-eight hours of notice, the calendar shows it, so the trench does not sit open waiting.
Sequencing underground work ahead of concrete
We start with the utility plan and the grading plan together, because depth and slope decide what can be done in what order. Deep sewer comes first, then storm drain, then water and fire line, then dry utilities, with duct banks and conduit placed where they will not be disturbed. Crossings are identified early and potholed when drawings are uncertain.
Before slab forms go up we require that every sleeve, stub and penetration under the building is placed, tested and recorded. After the slab is poured, a missed sleeve means saw cutting and coring, which is slow and leaves a weak spot. Concrete trade partners confirm locations against the drawings on the form line, and our trade partners are asked to sign off on their stubs before the pour.
Trenches, traffic and live lines
Open trenches and heavy equipment share the same ground as the people setting forms, and good coordination keeps them apart. We ask trade partners for their excavation safety plans, confirm that trench protection is in place where the depth requires it and keep workers out of the swing radius of equipment. Locates are called in before digging starts and documented on the job.
Where an existing line is live, such as an electrical feed or a pressurized water main, work around it follows the owner's procedures. That may mean hand digging, lockout steps or work windows when the system is shut down. We schedule those windows well ahead and tell the owner's rep what each window will allow, so everyone knows what must be finished before the line returns to service.
Soil, depth and available supply
Caliche near the surface can be tough to excavate and equally tough to compact around pipe, while sandy pockets need trench protection and careful bedding. Both appear in the same site more often than owners expect. Where the engineer calls for select bedding, we coordinate its delivery and confirm that haul distance from the supplier does not push it past its schedule.
Water supply is part of the planning too. Midland draws on the Paul Davis Well Field, which has dozens of wells for peak demand and backup supply, and the city also buys from a regional water district while one older well field remains shut down for water quality reasons. For a developer, that makes capacity and connection points worth confirming early, and our water main planning starts there.
Where we mobilize for utility-supported work
Much of the work is around the airport, where the Midland International Air and Space Port covers about 1,600 acres at an elevation of 2,871 feet inside the city limits, between downtown Midland and downtown Odessa. Airport-area sites carry height limits, security requirements and heavy truck traffic, and utilities there often tie into existing mains that must stay in service. See our airport area page.
Beyond the airport, we mobilize crews to commercial pads along Loop 250, industrial parcels along I-20 and sites in the neighboring Basin communities. In each place, we confirm which utility serves the parcel before we price, because an extension of service can change the schedule more than any amount of pipe.
What we place and what we coordinate
Concrete trade partners place thrust blocks, pipe encasement, electrical duct bank concrete, vault slabs and the paving and flatwork that cover finished trenches. Concrete work around manholes and vaults is a typical example: the base slab has to be level, the walls must align with the pipe invert and the top has to match the final grade.
Trenching, pipe, sanitary sewer and storm drain installation, cable pulling and testing are performed by trade partners whom we coordinate. For owners in the utilities and energy world we bring the same discipline: one schedule, one contact and written daily updates.
Start with the utility sequence
Send the civil sheets and the target slab date. We will return a written utility and pour sequence that shows inspections, tests and the dates each trade partner must finish.
Common Questions
Do you install the pipe yourselves?
The utility package identifies the concrete structures as well as the trenching, pipe and cable scopes. We coordinate the specialists responsible for each and their inspection handoffs, giving the owner a common calendar and contact for the work.
How long do utilities take before the slab can be poured?
It depends on depth, length and the number of crossings. A short service lead may take only a few days, but a full site with sewer, storm drain, water and fire line can take weeks. Inspections and tests often decide the finish date more than digging does, so we build their lead times into the calendar.
What if we find an unmarked line during excavation?
Work stops in that area, the line is protected and the owner and engineer are notified. We document it with photos and measurements. Often a utility owner can identify the line quickly. Potholing ahead of excavation reduces the chance of this happening, and we encourage it where drawings are uncertain.
Can utilities and slab work overlap?
They can overlap in different parts of the site if the sequence is planned. The slab area needs to be clear and approved first. We often start paving and flatwork in one zone while trade partners finish pipe in another, provided that access and safety are managed.
Who pays for utility inspections and tests?
The contract defines it. Typically the utility owner or city charges inspection fees, and the contractor schedules tests and covers retesting if something fails. We confirm the allocation during bidding and note it in writing.