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Learn MoreAnchor Bolt Layout for Pre-Engineered Metal Buildings and Structural Steel
Anchor bolt layout is one of the highest-stakes layout services in commercial construction because there is no tolerance for error after the concrete is poured. Lone Star Layouts delivers bolt layout to millimeter accuracy using total station and GPS equipment, from your structural drawings, before the concrete goes in.
Backed by Stone River Excavation, 11 years Texas earthwork experience
10+ years hands-on BIM, modeling, and layout experience
Trimble, Topcon, Leica and Civil 3D certified
The problem
A Bolt Out of Position After the Pour Is Not a Layout Error. It Is a Structural Problem.
Pre-engineered metal buildings are manufactured to precise tolerances. The column base plates, the bolt hole patterns, the anchor bolt projection heights: all of it is engineered to specification. If your anchor bolts are installed in the wrong position or at the wrong elevation, the building manufacturer's structural system won't align with what's in the ground.
At that point you are looking at one of three outcomes. You grind slots in the base plates to make the bolts fit, which the engineer may or may not approve. You core drill new holes in the slab, which is expensive and structurally questionable. Or you bust out the piers and start over, which is expensive, schedule-destroying and hard to explain to a GC who trusted you with the job.
All three outcomes start with the same root cause: inaccurate bolt layout before the pour.
Our solution
Schedule My Bolt Layout
Total Station Accuracy. Verified Before the Concrete Goes In.
We lay out anchor bolt patterns from your structural drawings using total station instruments that deliver millimeter-level precision. Every bolt position is set from the building control points, verified against the structural drawing dimensions and documented before the template is released for concrete.
We don't rely on measuring tapes from control points. We set each bolt location instrumentally. The difference between tape measurement and total station layout is the difference between close and correct.
What's Included
What You Receive with Every Anchor Bolt Layout Engagement
Structural Drawing Review Before Layout
We review your structural drawings before coming to site to confirm that bolt group dimensions, column spacings, bearing elevations and edge distances are fully defined. If anything is missing or unclear, we flag it before the field visit, not while standing over the forms.
Total Station Bolt Position Layout
Every anchor bolt position is set from your building control points using a total station instrument. X, Y and elevation for each bolt are set instrumentally and verified before the template is secured. No tape measurements from a single reference point.
Bolt Projection Height Verification
Bolt projection height above the finished slab elevation is confirmed to the structural drawing requirement. Too short and the nut doesn't thread properly. Too long and the base plate won't sit flush. We confirm both before concrete.
Template Alignment Verification
Once the bolt template is placed, we verify the final position before releasing it for concrete. If anything shifted during placement, we catch it at this step, not after the pour.
Pre-Pour Layout Report
We provide a layout report documenting the set bolt positions, the instrument setup, the control points used and any field conditions that required resolution. If your structural engineer or GC requires layout documentation before the pour, you have it.
Post-Pour Verification Survey
After the concrete cures and forms are stripped, we can return to verify the final as-built bolt positions against the structural drawing. If you need post-pour certification for the structural engineer or the building manufacturer, this optional survey provides it.
Building Types We Serve
Anchor Bolt Layout for Common Structure Types
Pre-Engineered Metal Buildings (PEMB)
The most common anchor bolt layout application. PEMB manufacturers provide anchor bolt layout drawings with precise column spacings, bolt group configurations and bearing elevations. Every dimension in those drawings matters. We set to them instrumentally.
Structural Steel Buildings
Custom structural steel frames require the same precision as PEMB systems but often with more complex column grids and non-standard bolt group configurations. We work from your structural engineer's anchor bolt plan and confirm dimensions against the steel fabrication drawings if available.
Tilt-Up Concrete Panels
Tilt-up construction requires precise embed placement for panel connections and ledgers. We lay out embed positions from your tilt-up drawings using the same total station precision applied to steel anchor bolt layout.
Equipment Pads and Machinery Foundations
Heavy equipment and industrial machinery require anchor bolt layouts that match manufacturer-provided templates to tight tolerances. We work from the equipment manufacturer's foundation drawing and set bolts to their dimensional requirements.
Process
How an Anchor Bolt Layout Project Works
Step 1
Send Us Your Structural Drawings
Send your anchor bolt plan, structural drawings and any manufacturer-provided layout templates. Include your pour schedule. We need your drawings reviewed before we can quote and we need your schedule to plan the field visit.
Step 2
We Review, Flag and Quote
We review your structural drawings for dimensional completeness and flag any missing or conflicting information before committing to the field visit. You get a quote and a confirmed schedule. Most quotes are returned same day for anchor bolt projects because of the schedule sensitivity involved.
Step 3
We Set the Layout Before Your Pour
Our crew arrives before your concrete crew is ready to pour. We set the building control points, lay out each bolt position using the total station, verify projection heights and confirm template alignment. We release the template for concrete when everything checks out.
Step 4
We Document and Deliver the Layout Report
We provide a pre-pour layout report documenting the set positions, control points and field conditions. If a post-pour verification survey is in scope, we return after the concrete cures and provide a final as-built bolt position report.
Service areas
We Work Across Texas. And Anywhere a File Can Travel.
Our remote services go where the project is. Our field crews cover the major earthwork corridors across Texas.
Related Services
Often Paired with Anchor Bolt Layout
As-Built Surveys
We document what was actually built. GPS-accurate, formatted to your GC's requirements, delivered on your schedule.
Learn More
QA/QC Services
As-built documentation, compliance surveying and construction quality control records that give your GC what they need to close out the project.
Learn More
FAQ
Have more questions? Call now
Frequently Asked Questions About Anchor Bolt Layout
What accuracy do you achieve on anchor bolt layout?
We lay out bolt positions using total station instruments, which achieve millimeter-level positional accuracy under normal field conditions. Accuracy is verified against your structural drawing dimensions before the template is released for concrete.
What drawings do you need before you can quote?
We need your anchor bolt plan and structural drawings, along with any manufacturer-provided layout templates. We review those for dimensional completeness, confirming bolt group dimensions, column spacings, bearing elevations and edge distances are fully defined, and we ask for your pour schedule so we can plan the field visit and quote.
How much lead time do you need before my pour?
Get your drawings and pour schedule to us as early as you can. We review the drawings for completeness before committing to the field visit, and most anchor bolt quotes come back same day because of the schedule sensitivity. Our crew is on site to set the layout before your concrete crew is ready to pour.
How do you schedule the field visit around my pour date?
We schedule the field visit around your pour date, so the earlier you send your drawings and pour schedule the better. We set the building control points, lay out each bolt position and verify template alignment before the concrete goes in, so there is time to resolve any field conditions before the pour.
Do you offer a post-pour bolt position verification?
Yes. After the concrete cures and the forms are stripped, we can return to verify the final as-built bolt positions against the structural drawing. This optional post-pour verification survey provides the certification your structural engineer or building manufacturer may require.
Can you lay out bolt patterns for non-standard or complex column grids?
Yes. Custom structural steel frames with complex column grids and non-standard bolt group configurations get the same total station precision as PEMB systems. We work from your structural engineer's anchor bolt plan and confirm dimensions against the steel fabrication drawings when available.
Set Your Bolts Right Before the Concrete Goes In
Send us your structural drawings and your pour schedule. We'll review the drawings, confirm crew availability and get your bolt layout done before your concrete crew is ready. There's no correcting this after the pour.
Field services available across Houston, DFW, Rio Grande Valley and Corpus Christi. Most quotes returned same day for anchor bolt projects.