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254 Engineering Services

Coverage region

Engineering Services Across the Texas Panhandle

Forty one counties on the Llano Estacado and the caprock. The most consistently wind exposed terrain in Texas, the deepest frost penetration in the state, and forty one counties where a lender is more often the reason for an engineer's seal than a building department is.

An open plain under a heavy grey storm sky.

Wind

What the wind here asks of a structure

What the wind environment requires of a structure in the Texas Panhandle and the South Plains.

The high plains are the most consistently wind exposed terrain in Texas. Open, unobstructed fetch means exposure category C is the honest assumption for most sites and category B is the one that has to be justified, and that single choice moves design pressures more than most people expect.

Wind frequently governs the lateral design of the metal buildings, agricultural structures, and light commercial buildings that make up much of the construction here, and uplift at the roof to wall connection is the detail that decides whether a building survives a severe event intact.

Hail is severe and frequent across the South Plains, and the region also sees the state's most significant winter loading, which is a design case that barely registers in the rest of Texas.

Soil

What the ground does, and what it does to a foundation

What the ground does here, and what a foundation has to be designed against because of it.

The Llano Estacado carries the Pullman and Sherm clay loams, which have moderate shrink swell potential: enough to matter to a slab, considerably less than the Blackland Prairie or the upper coast. Caliche layers are common and provide good bearing where they are continuous and a nuisance where they are not.

Playa lakes are the distinctive feature of the region. These shallow ephemeral basins collect runoff across the plains, and building near one raises drainage, saturation, and soil moisture questions that the surrounding uniform terrain does not.

Frost depth is the assumption most commonly carried in wrongly from elsewhere in Texas. Footing depths in the northern Panhandle are set for meaningfully deeper frost penetration than anywhere else in the state, and a detail copied from a Dallas plan set is not correct in Dalhart.

Permitting

Who has authority, and what they ask for

Who has authority over the work, and what they ask for before they issue.

Amarillo, Lubbock, Plainview, and the larger incorporated cities operate full building departments with conventional requirements for sealed documents. Outside them, most of the forty one counties in this region have little or no building permitting in unincorporated areas.

That makes the engineering deliverable here more often a document for a lender, an insurer, or a loan file than a document for a plan reviewer, and it changes how the letter is written and who it is addressed to.

Manufactured housing is a significant share of the rural residential stock, which makes the HUD foundation certification required by federally backed lending one of the most frequently needed deliverables across the region.

Counties

The 41 counties in this region

Population centers include Amarillo, Lubbock, Plainview, Pampa, Borger, Levelland. Coverage is the whole list, not the centers.

  • Armstrong
  • Bailey
  • Briscoe
  • Carson
  • Castro
  • Childress
  • Cochran
  • Collingsworth
  • Crosby
  • Dallam
  • Deaf Smith
  • Dickens
  • Donley
  • Floyd
  • Garza
  • Gray
  • Hale
  • Hall
  • Hansford
  • Hartley
  • Hemphill
  • Hockley
  • Hutchinson
  • King
  • Lamb
  • Lipscomb
  • Lubbock
  • Lynn
  • Moore
  • Motley
  • Ochiltree
  • Oldham
  • Parmer
  • Potter
  • Randall
  • Roberts
  • Sherman
  • Swisher
  • Terry
  • Wheeler
  • Yoakum

Start a job

Tell us what the letter is for and we will tell you yes or no

Send the address, what the document is for, and the date it has to be in hand. Some jobs this firm cannot take, and you will hear that in the first conversation rather than after you have paid and waited.