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The Reserves at Wheatlands
Residential Subdivision Development
Services: Geotechnical Engineering, Construction Materials Testing and Special Inspections
Completed: 2011
Location: Purcelville, VA
Project Overview
This project involved construction of a 15-cluster lot residential subdivision with single-family homes ranging from 2,300 to 5,200 square feet on 1–3 acre lots. The development included 2,750 linear feet of roadway and a stormwater management pond. MTI conducted a comprehensive subsurface exploration study, provided geotechnical evaluation report with design recommendations, and performed lab and field soil and concrete testing for all curbs, gutters, roadwork, and stormwater infrastructure.
Challenges
MTI addressed several geotechnical challenges, including:
- High-Plasticity Soils: Potentially impacting pavement and foundation stability.
- Shallow Rock Formations: Requiring careful excavation planning.
- Stormwater Structure Foundations: Supporting the riser, outlet pipe, and drainage blanket.
MTI’s Approach
To mitigate these challenges, MTI performed site visits, soil borings, and field and laboratory tests, analyzing the data to develop engineering recommendations to guide design and construction:
- Soil Stability: Recommended undercutting high-plasticity soils in pavement subgrades for improved stability.
- Shallow Rock Management: Ensured excavation remained above shallow rock depth and advised reusing weathered rock as engineered fill.
- Stormwater Management Support: Provided foundation recommendations for the riser structure, evaluated material suitability for outlet pipe support, analyzed drainage blanket requirements, and specified compaction materials for the pond embankment.
- Testing & Inspections: Performed extensive lab and field soil and concrete testing for all curbs, gutters, roadwork, and stormwater infrastructure.
Outcome
MTI’s geotechnical recommendations were confirmed during earthwork, ensuring a seamless transition from design to construction. Our proactive approach mitigated potential delays and extra costs and supported the long-term durability of home sites, roadways, and stormwater management systems in this residential subdivision.