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The Machine and Its Capabilities
The Caterpillar 955L track loader was introduced in the 1970s as a successor to the 955K, offering improved hydraulics, a more powerful engine, and enhanced operator comfort. Powered by a turbocharged CAT 3306 diesel engine producing around 150 horsepower, the 955L weighs approximately 38,000 lbs and features a multipurpose bucket ideal for excavation, grading, and material handling. With its rugged undercarriage and high breakout force, the 955L was widely used in site preparation, landfill work, and demolition.
Though no longer in production, the 955L remains a capable machine for earthmoving tasks, especially when operated by someone with seat time and mechanical intuition.
Digging a Basement with a Track Loader
Using a 955L to dig a basement is entirely feasible, especially for a walkout design on sloped terrain. The process involves:
Cost Breakdown and Savings Potential
Typical costs for a poured concrete basement include:
Soil Conditions and Drainage Considerations
In regions with high plasticity clay, such as parts of Missouri and the Carolinas, soil movement can wreak havoc on foundations. Builders often overdig by 4–6 feet and replace native soil with 1-inch clean rock to stabilize the base. Drain tile is placed below slab level to ensure proper water evacuation.
If the site is wet or prone to flooding, using a track loader may be risky. Wet soil can pump under the slab, leading to heaving and structural damage. In such cases, a contractor with excavation and drainage experience may be better equipped.
Forming and Concrete Work
Basement walls can be formed using:
Contractor vs Owner-Operator Tradeoffs
While digging the basement yourself offers savings, it also shifts liability. If the excavation is off-grade or drainage is inadequate, contractors may blame the owner for resulting issues. A full-service contractor handles excavation, forming, concrete, and backfill—streamlining accountability.
One homeowner in North Carolina used his 955L to dig a walkout basement and hired a concrete crew for the pour. He saved over $3,000 and gained confidence in his machine’s capabilities, but noted the importance of laser leveling and soil compaction.
Conclusion
Digging a basement with a CAT 955L is not only possible—it can be cost-effective and rewarding. With proper planning, grade control, and awareness of soil conditions, owner-operators can tackle excavation themselves and leave forming and concrete to professionals. The key is knowing your limits and ensuring every step supports long-term structural integrity.
The Caterpillar 955L track loader was introduced in the 1970s as a successor to the 955K, offering improved hydraulics, a more powerful engine, and enhanced operator comfort. Powered by a turbocharged CAT 3306 diesel engine producing around 150 horsepower, the 955L weighs approximately 38,000 lbs and features a multipurpose bucket ideal for excavation, grading, and material handling. With its rugged undercarriage and high breakout force, the 955L was widely used in site preparation, landfill work, and demolition.
Though no longer in production, the 955L remains a capable machine for earthmoving tasks, especially when operated by someone with seat time and mechanical intuition.
Digging a Basement with a Track Loader
Using a 955L to dig a basement is entirely feasible, especially for a walkout design on sloped terrain. The process involves:
- Starting on the low side and working inward
- Establishing a level pad using a laser or transit
- Excavating to footing depth, typically 8–10 feet depending on wall height
- Overdigging by 2–4 feet to allow for drainage and clean rock backfill
- Stockpiling material for later backfill or slope shaping
Cost Breakdown and Savings Potential
Typical costs for a poured concrete basement include:
- Excavation: $1,500–$2,500
- Concrete walls: $25,000–$35,000
- Backfill and drainage: $800–$1,500
- Footings and slab: $5,000–$8,000
Soil Conditions and Drainage Considerations
In regions with high plasticity clay, such as parts of Missouri and the Carolinas, soil movement can wreak havoc on foundations. Builders often overdig by 4–6 feet and replace native soil with 1-inch clean rock to stabilize the base. Drain tile is placed below slab level to ensure proper water evacuation.
If the site is wet or prone to flooding, using a track loader may be risky. Wet soil can pump under the slab, leading to heaving and structural damage. In such cases, a contractor with excavation and drainage experience may be better equipped.
Forming and Concrete Work
Basement walls can be formed using:
- Plywood and ties (traditional method)
- Reusable aluminum forms (common in commercial work)
- Cinder block with stucco and tar (budget option)
Contractor vs Owner-Operator Tradeoffs
While digging the basement yourself offers savings, it also shifts liability. If the excavation is off-grade or drainage is inadequate, contractors may blame the owner for resulting issues. A full-service contractor handles excavation, forming, concrete, and backfill—streamlining accountability.
One homeowner in North Carolina used his 955L to dig a walkout basement and hired a concrete crew for the pour. He saved over $3,000 and gained confidence in his machine’s capabilities, but noted the importance of laser leveling and soil compaction.
Conclusion
Digging a basement with a CAT 955L is not only possible—it can be cost-effective and rewarding. With proper planning, grade control, and awareness of soil conditions, owner-operators can tackle excavation themselves and leave forming and concrete to professionals. The key is knowing your limits and ensuring every step supports long-term structural integrity.
