The most demanding concrete construction projects are rarely the ones that require the most advanced engineering. More often, they are the ones that test a contractor’s ability to communicate, coordinate, and collaborate across multiple trades under an aggressive timeline. A recent project in Houston, Texas demonstrates this principle at scale. Mission Constructors, serving as general contractor, selected TAS Commercial Concrete to deliver the foundation system for a 200,000-ton-per-year pipe manufacturing facility owned by OMK. The seven-month design-build schedule required sequenced foundations, auger cast piles, heavy slab-on-grade construction, and relentless coordination between the concrete crew, steel erectors, electricians, and equipment suppliers. Understanding how the team approached each phase offers valuable lessons for concrete contractors and construction professionals working on high-productivity slab construction strategies in industrial settings.
Coordinating a Seven-Month Design-Build Schedule
Design-build projects compress the traditional timeline by overlapping design and construction phases. On the OMK facility, this compression was extreme. When TAS began work in May 2012, foundation drawings were still incomplete. The team had until the end of December to deliver a facility ready for pipe manufacturing.
Preconstruction Planning Across Trades
Success depended on early and continuous coordination. Representatives from TAS, Mission Constructors, the steel erector, the excavator, and the electrician met to map out a sequence that would keep every trade productive. The foundation work was planned to move east to west across the 75-acre site, with the steel erection crew following approximately 10 column lines behind. This allowed the steel team to begin enclosing portions of the building while concrete work continued elsewhere.
Role of Owner Representation
OMK appointed a site representative with the authority to make decisions without delay. This proved critical on a project where engineering drawings arrived days or even hours before work was scheduled to begin. Waiting two days for a decision would have cascaded into schedule overruns. Having an empowered owner representative onsite allowed the team to resolve conflicts and approve changes in real time.
Key Coordination Strategies
- Daily alignment meetings between the concrete crew and the steel erector to confirm the next day’s work zones
- Shared schedule tracking that accounted for concrete cure time before steel erection could proceed
- Designated communication leads for each trade to prevent information bottlenecks
- Pre-positioning of materials and equipment for each work zone before the crew arrived on site
Scheduling Outcomes
The coordinated approach allowed TAS to stay consistently ahead of the steel erectors. By the time the steel team reached a column line, the foundation had already cured and was ready for loading. This sequencing eliminated idle time for both crews and kept the project on track for the December deadline.
Deep Foundations and Auger Cast Pile Construction
The OMK facility required a foundation system capable of supporting heavy manufacturing equipment, steel coils, and the building structure itself. TAS used auger cast piles throughout the site, adapting the pile design as the project progressed.
Auger Cast Pile Design Under Design-Build Conditions
The foundation plans evolved as equipment specifications arrived from multiple manufacturers. John Joyce, Senior Project Manager at TAS, noted that the auger cast pile design was an ongoing challenge because engineering details for different zones of the building were released incrementally. The team started by drilling piles for interior pier caps, then moved to the exterior grade beams. This sequencing allowed the structural steel crew to begin erection on completed sections while foundation work continued in other areas.
Constructing the Slitter Pit 30 Feet Below Grade
One of the most demanding elements was a slitter pit that extended 30 feet below finish grade. The excavation required coordination with the excavator and the steel erector to ensure the surrounding ground remained stable and that the pit walls could be formed and poured safely.
Formwork and Reinforcement Strategy
TAS used a Unistrut support system to hold anchor bolt pockets, multiple elevation changes, and circular forms in place during the pour. The electrician installed conduit on the lower mat of steel reinforcement before the concrete was placed, working from engineering information that sometimes arrived only hours before the pour. This just-in-time approach required the concrete crew to maintain flexibility in their forming and placing sequence.
Water and Weather Management
Because the pit was excavated below the water table and exposed to weather, TAS prioritized completing the pit shell and backfilling before the foundation work for the pre-fabricated steel structure could begin. The team monitored weather forecasts daily and adjusted pour schedules to avoid rain events that could compromise the excavation.
Foundation Pile Layout and Sequencing
| Pile Zone | Pile Type | Depth | Purpose |
|---|---|---|---|
| Interior pier caps | Auger cast pile | 90 feet | Column support for steel structure |
| Exterior grade beams | Auger cast pile | 90 feet | Perimeter foundation wall support |
| Receiving area slab | Auger cast pile | 8-foot grid | Rolled steel storage load support |
| Equipment zones | Auger cast pile | 90 feet | Heavy machinery foundation |
Slab-on-Grade Construction for Heavy Manufacturing
The manufacturing floor required a slab-on-grade system capable of supporting rolled steel stockpiles, heavy equipment, and daily forklift traffic. Beyond raw strength, the slab needed an integrated trench network to capture and route industrial fluids away from work areas.
Sequential Slab Placement
Rather than pouring the entire slab at once, TAS placed concrete in strategic zones that corresponded with equipment delivery schedules. When a piece of equipment was confirmed for a specific location, the crew poured that section of slab. This approach prevented the slab from being cut or patched later when equipment footprints changed.
Trench and Fluid Management System
The floor was laced with graded trenches that directed manufacturing fluids to collection points. Each trench required precise forming to maintain consistent slope, and the reinforcement detailing had to accommodate trench edges without compromising structural continuity. The maze of trenches made each slab pour unique, requiring careful planning of concrete placement and finishing sequences.
Coordination with Mechanical and Electrical Trades
The slab pour sequence was driven by mechanical and electrical rough-in schedules. Conduit runs, piping chases, and embedments had to be installed before concrete placement in each zone. TAS worked closely with the electrician and plumber to confirm that all underground work was complete before calling for a concrete delivery.
Concrete Placement and Finishing
For the receiving area slab, TAS placed concrete on an 8-foot grid of auger cast piles that had been installed specifically to handle the concentrated loads from rolled steel storage. The slab thickness and reinforcement were designed to distribute point loads across multiple piles, preventing differential settlement under heavy storage conditions.
Managing Multisource Equipment and Metric Measurement Challenges
OMK purchased manufacturing equipment from suppliers in the United States, Canada, Italy, and Japan. Each supplier provided foundation drawings in different units and at different stages of the project timeline. This created a coordination challenge that tested the team’s ability to adapt.
Metric to Imperial Conversion Across All Trades
Equipment from Japan and Italy specified anchor bolt locations, equipment openings, and beam pockets in metric units. TAS and the engineering team converted every measurement before forming and placing concrete. Joyce noted that the constant updates to engineering drawings meant the crew was always working with the latest version, with embedded beams, openings, and anchor bolt locations changing as new equipment information arrived.
Relationship-Based Problem Solving
TAS had a pre-existing relationship with Mission Constructors from previous projects. That relationship, strengthened by a vice president who had worked with both companies, provided a foundation of trust that helped the teams navigate the uncertainty of the design-build process. Tim Manherz, Vice President of Operations at TAS, emphasized that the company’s status as a preferred concrete contractor for Mission was earned through consistent performance on earlier jobs and reinforced by the successful delivery of this complex facility.
Cross-Trade Coordination Results
- Seven-month project delivered on schedule despite incomplete foundation drawings at start
- Over 365 auger cast piles installed for the receiving area slab alone
- Multiple foundation zones sequenced to keep steel erection continuously productive
- Equipment from four countries integrated into a single foundation system without rework
Lessons for Future Industrial Projects
The OMK project demonstrates that design-build concrete construction at industrial scale depends as much on organizational systems as on technical capability. Contractors who invest in preconstruction relationships, maintain flexible work sequences, and empower onsite decision-making are better positioned to handle the uncertainty that comes with fast-track schedules and evolving engineering information. For construction teams working on industrial slab joint design or planning deep foundation construction sequences, the coordination lessons from this project apply directly to their own work. The three C’s of communication, coordination, and collaboration remain the foundation of success in concrete construction, regardless of project size or complexity.