El Paso County
Sealed Engineering Letters in El Paso, Texas
El Paso is the one Texas market where seismic design actually enters the conversation, and the one where the soil problem is collapse under wetting rather than swell.
Opening soon
Sealed Engineering is not yet accepting orders. Firm registration is pending with the Texas Board of Professional Engineers and Land Surveyors, and no engineering services are being offered or performed under this brand until it is granted. Founding customers on the waitlist are contacted first when ordering opens.
What governs engineering work in El Paso
- County
- El Paso County
- Region
- West Texas
- Design wind speed
- roughly 100 to 110 mph basic wind speed
- Moderate mapped wind, but exposure is frequently C or D on the desert flats and mesa edges, which raises the design pressures well above what the band alone suggests.
- Soil
- arid alluvium, caliche, and collapsible silts
- Unlike most of Texas, the residential soil failure here is hydrocompaction: low density soils that lose volume suddenly when they get wet, usually from irrigation or a plumbing leak.
- Residential plan review
- the City of El Paso Planning and Inspections Department
- El Paso County reviews unincorporated areas including the colonias east and south of the city.
- TDI windstorm area
- No, WPI-8 does not apply here
Wind speeds are the ASCE 7 band for the area and are given as planning context. Every sealed document uses the value looked up for the specific site address, along with the exposure category that actually applies to that site.
Engineering in El Paso, in practice
El Paso sits in the highest seismic zone in Texas. The design category is still modest by California standards, but it is not the flat zero that applies across most of the state, and it appears in the design criteria on any plan set sealed for this market. Engineers who work the rest of Texas and drop a set into El Paso get this wrong regularly.
The soil behaves in the opposite direction to the rest of the state. Central and East Texas foundations move because clay swells when it takes on water. El Paso foundations move because low density desert silts collapse when they take on water, which means the trigger is the same, irrigation and plumbing leaks, and the direction of movement is reversed. A repair designed for expansive clay is the wrong repair here.
Solar is a strong market on this side of the state and the wind case is the reason the letters matter. Open desert exposure and mesa edge sites put arrays into higher effective wind pressure than the mapped speed implies, and the attachment spacing usually tightens as a result.
Shade structures are ordinary construction here rather than an amenity, and carport and patio cover plans are a steady category. Uplift governs those structures completely, and a stock plan drawn for a lower wind speed or a different exposure is the most common reason one gets rejected at the counter.
What El Paso orders most
Ordered by local weight rather than alphabetically. Every deliverable in the catalog is available for a El Paso address; these are the ones this market actually asks for.
- Document reviewSolar Structural LettersThe stamped letter your plan reviewer asks for before a rooftop array goes on: existing framing capacity, wind uplift at the actual site, and attachment spacing that resists it.What it contains
- Document reviewCarport and Patio Cover PlansA small plan set that passes plan review: footing schedule, post and beam sizes, and the uplift connections that matter more than anything else on a structure this light.What it contains
- Documents or site visitStructural Letters for PermitsPlan review asked for a sealed letter and the project stopped. This is the deliverable that restarts it: a specific structural question answered, sealed, and addressed to the reviewer who asked.What it contains
- Documents or site visitBeam and Header Sizing LettersTaking a wall out, or opening one up. The beam gets sized against the real loads, the bearing gets checked, and the load path gets followed all the way down instead of stopping at the ceiling.What it contains
- Documents or site visitRepair Specification LettersSomething structural is damaged and somebody has to say exactly how it gets fixed. This is that document: the repair specified in buildable detail, sealed, and written so plan review and the contractor read the same thing.What it contains
El Paso questions
Does seismic design really apply in El Paso?
Yes, and it is the only Texas metro where it routinely does. El Paso sits in the highest seismic design category in the state. It is modest compared with the West Coast, but it is not zero, and it belongs in the design criteria on a sealed plan set for this market.
My foundation dropped after a plumbing leak. Is that the same as Texas clay movement?
No, and the difference matters for the repair. Central Texas clay swells and shrinks with moisture. El Paso soils are frequently low density and collapse when saturated, so a leak causes a sudden downward settlement rather than a seasonal cycle. The remedy is different and a repair designed for expansive clay does not address it.
Why did my carport plans get rejected?
In this market, usually because the plans were drawn for a lower wind speed or a lower exposure category than the site actually has. Open desert and mesa edge sites often qualify as exposure C or D, which raises uplift substantially. A plan set sealed against the values at the actual address is the fix.
Nearby Texas markets
Sealed documents for El Paso property
Tell us the address and the document you have been asked for. El Paso sits in El Paso County, and both the wind values and the reviewing office follow from that.
Opening soon. Founding customers get first turnaround slots.