Equipment Pads and Machine Foundations in Wyoming

A compressor that walks off its pad costs more than the pad ever did. Rotating and reciprocating equipment shakes whatever it sits on, and a foundation that is too light, too soft or poorly tied to the ground will fail in slow motion. We build equipment pads and machine foundations that stay where the engineer put them.

The work covers slabs under tanks and skids, block foundations for compressors and pumps, pads for transformers and switchgear, and heavy bases for presses, mills and process equipment. Each one starts with the manufacturer's foundation drawing and the geotechnical report. We build to the drawing, check it in the field and hold the tolerance that the equipment vendor asks for, which is often tighter than the building around it.

Wyoming plants run hard. The Laramie River Station in Platte County near Wheatland is a 1,710 MW coal-fired plant that went into service in 1980 and added emissions control equipment in 2019. Casper's surviving refinery sits in Evansville next door. Plants like these keep adding and replacing equipment, and every item needs a base that can take it.

Plants that keep changing out equipment

Energy and process plants rarely stand still. Controls get upgraded, pumps get replaced, vessels get added and a turnaround window closes on a hard date. That pushes foundation work into short outages and tight winter calendars. We plan for it by preparing forms, rebar and templates in advance so the pour happens when the outage opens, not three days after.

Existing plants also bring existing underground. Old foundations, piping, conduit and grounding grids sit exactly where the new pad wants to go. We locate and map them before digging, pothole where records are weak and coordinate with the plant on isolation and permits. Surprises underground cost more than anything above it, and a good locate costs a morning.

Bearing, mass and tolerance

We begin with bearing. The pad has to spread the machine load to soil that can take it without settling, so we confirm the soil conditions against the report and replace weak material before forming. Machine foundations are often designed with mass in mind, since weight resists vibration. That drives thickness and reinforcement, and it makes the pour a mass-concrete job where heat of hydration needs managing.

Anchor bolts, sleeves and embedded plates go in on templates, surveyed and checked before concrete is placed and again afterward. A bolt that lands half an inch out can take a day to fix, and a base plate that does not seat can halt a startup. After the pour we cure the concrete, inspect the top surface and prepare it for grout. Epoxy or cementitious grout is placed by the book, because a bad grout job returns as a vibration problem. Where soil is too weak for a mat, we carry the load down with piles, as covered in our deep foundations and piers work.

Frost, wind and where the pad sits

Pads outdoors face frost. The Town of Wright publishes a 42 inch frost line depth, and design values elsewhere run from about 34 inches to 54 inches or more. A pad that is not insulated or set below frost will move, and an aligned compressor does not tolerate movement. We design edge depth, insulation or deepened footings to match the equipment's tolerance for movement.

Wind matters for tall equipment and for pads under open structures. We coordinate overturning checks with the engineer and confirm the local design wind speed, since the Town of Wright lists 90 mph while Laramie County lists 105 mph. Drainage, containment curbs and sumps are built into the pad when the equipment holds fluid, so a leak is a cleanup, not a disaster. Inside a manufacturing plant, the same pad also has to respect the floor slab around it.

Who reviews and inspects a pad

Requirements come from the equipment engineer, the plant owner's standards and the local building department. Wyoming does not use a single statewide commercial code. The Department of Fire Prevention and Electrical Safety adopted the 2024 International Codes on June 28, 2024, and localities with delegated authority adopt their own editions. We confirm which edition applies before we order steel or concrete.

Special inspection and testing are part of the work: reinforcement, embeds, concrete strength and grout. We coordinate inspection windows so the pour is not delayed by a missed hold point. Where the equipment sits on a floor, we coordinate with our industrial concrete floors work so slabs and pads are isolated or tied as the design requires.

Working inside an operating plant

Foundation work inside a plant means hot work permits, confined spaces, lockout and tagout, and people who need to get past you. We attend the owner's safety orientation, follow their permit system and brief crews every morning. Excavations are shored or sloped, and cranes and trucks are staged away from live equipment.

Cold and wind make it harder. Heated enclosures and blankets protect concrete, and they add fire and fume hazards that need monitoring. We plan placement for the calmest, warmest part of the day, keep ice off access routes and stop work when gusts make crane picks unsafe. A mass pour that cannot be paused is planned with a backup pump and a second concrete supplier. Where a steel frame will sit on the pad, we line up the schedule with structural steel erection so bolts and plates are ready.

Give us the foundation drawing and the outage date

Send the equipment data, the foundation drawing and the shutdown window. We will review the soil and frost conditions, prepare templates and forms ahead of time and price the pour with a schedule that fits your outage.

Common Questions

Why do machine foundations need so much concrete?

Mass resists vibration. A heavier foundation moves less under the same dynamic load and shifts the natural frequency away from the machine's running speed. The designer sets thickness and plan size from the manufacturer's data and the soil. We build to the drawing and handle the temperature control that a thick pour needs.

Can a pad be poured against an existing slab?

Yes, but the joint has to be designed. Some pads are isolated from the floor to keep vibration out of the building, and others are doweled for stability. We follow the engineer's detail and build an isolation joint where one is called for.

How tight is anchor bolt tolerance?

Tighter than most owners expect. Vendors often specify a small tolerance on bolt location and projection, and base plates have little slack. We use templates, survey every bolt group and check again after the pour. If a bolt is off, we tell the engineer before the grout.

What if we need the pad during a short outage?

Plan backward from the outage. We prepare forms, steel and templates before the shutdown, pour in the first days and cure with heat and blankets if the weather requires. Concrete strength determines when equipment can be set, so we build the cure time into the schedule and discuss options such as high-early-strength mixes.

Do we need a geotechnical report for a small pad?

For a light skid, a simple bearing check may be enough. For anything heavy, dynamic or settlement-sensitive, get a report. Soil conditions change quickly across a plant, and a boring costs far less than a pad that settles.