Arlington sits on the Eagle Ford Shale formation, a geology dominated by high-plasticity clays that swell significantly with moisture changes. The water table fluctuates between 3 and 6 meters depending on the season and proximity to the Trinity River. For any retaining wall design in Arlington, these shrink-swell cycles dictate the lateral earth pressures and require careful consideration of drainage and backfill selection. Our team integrates site-specific soil parameters with the IBC load combinations to produce walls that resist both static and seismic forces. Before finalizing a retaining wall in Arlington, we often recommend a complementary geotechnical instrumentation program to monitor pore pressures behind the wall during the first wet season.
Expansive clays in Arlington can exert lateral pressures 50% higher than granular soils — our designs account for that surplus from day one.
Methodology and scope
Summers in Arlington bring sustained temperatures above 100°F, which desiccate the surface clay and create deep tension cracks. When rain returns, water infiltrates rapidly through those cracks and mobilizes the full swelling potential of the soil. We account for this cyclic behavior by modeling partial saturation conditions and using at-rest pressure coefficients derived from the soil's plasticity index. For walls taller than 6 feet, we additionally evaluate the seismic coefficient per ASCE 7 using a site-adjusted short-period acceleration of 0.25g. A thorough CBR test for pavement design on the subgrade behind the wall helps verify the bearing capacity before construction begins. Our retaining wall designs in Arlington always include a drained granular blanket and a perforated collector pipe at the base to prevent hydrostatic buildup.
Technical reference image — Arlington
Local considerations
Arlington has recorded 16 inches of rain in a single month twice in the last decade. When a retaining wall is built without proper drainage, that volume of water turns the clay behind it into a near-liquid mass that can triple the lateral load. The 2021 winter storm also demonstrated that freeze-thaw in the upper 12 inches of soil can crack wall faces and shift the wall alignment. Any retaining wall design in Arlington must include a waterproof membrane on the back face, a perforated drain pipe wrapped in geotextile, and a clean gravel chimney that extends from the footing to within 12 inches of the top. Skipping these details often leads to wall tilting within the first three years of service.
For walls up to 15 feet tall, we design reinforced concrete cantilevers and modular block gravity walls. We calculate sliding and overturning factors considering the high plasticity index of Arlington clays and provide detailed drainage plans with filter fabric and perforated pipe sizing.
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Anchored and Mechanically Stabilized Earth Walls
For taller walls or constrained right-of-way, we design tieback anchored walls and MSE walls with steel or geosynthetic reinforcements. We use the local soil's friction angle and cohesion to size the reinforcement length and verify pullout capacity using AASHTO methods and site-specific pull tests.
Why is retaining wall design in Arlington different from other Texas cities?
The Eagle Ford Shale produces some of the highest plasticity clays in the DFW metroplex. Combined with the area's intense rainfall events and seismic site class D, the design must account for swelling pressures, rapid drainage, and a seismic coefficient that is not negligible. Generic designs from other regions often fail here within a few years.
What is the typical cost range for a retaining wall design study in Arlington?
For a standard residential or commercial wall project, the study cost ranges between US$1,070 and US$3,800. The variation depends on wall height, soil testing requirements, and whether seismic analysis is needed. Contact us for a quote specific to your site.
How deep should the footing be for a retaining wall in Arlington?
We recommend a minimum embedment of 1/10 of the wall height, with a minimum of 1.5 feet below finished grade. In areas where the clay is very active, we often increase embedment to 2 feet to place the footing below the primary zone of seasonal moisture change.
Do I need a geotechnical report before designing a retaining wall in Arlington?
Yes. The IBC requires a geotechnical investigation for any wall supporting a surcharge or retaining more than 4 feet of unbalanced fill. The report provides the soil classification, plasticity index, unit weight, and drained shear strength parameters that are essential for the design.
Location and service area
We serve projects across Arlington and its metropolitan area.
