This blog explains trenching: what it is, when it’s needed, and what equipment is commonly used. It highlights how Bobcat excavators like the E10, E20, and E35 are especially suited for trenching jobs of different sizes. If you’re preparing to dig for utilities, drainage, or structural work, this post helps you plan it right.
What Is Trenching?
Trenching is the process of excavating long, narrow channels in the ground. The depth and width can vary based on the purpose, but the shape is typically consistent: deeper than wide, with clean, defined edges.
Common trenching purposes include:
- Installing water, gas, or electrical lines
- Running irrigation systems
- Creating drainage paths
- Preparing concrete footings or retaining walls
- Laying cable or fiber optic lines
Trenches must be dug with attention to grade, depth, and safety — especially in projects requiring inspection or code compliance.
Types of Trenching Equipment
While trenchers (specialized machines) exist, excavators are more versatile for a wide range of trenching applications — especially when paired with the right bucket or attachment.
Here’s how various Bobcat excavators stack up for trenching:
Bobcat E10
- Best for extremely tight spaces (even indoor jobs)
- Retracts to 28" wide — fits through gates and doors
- Ideal for shallow utility lines or small backyard projects
- Dig depth: approx. 6 ft
- [Link to your Bobcat E10 rental page]
Bobcat E20
- Excellent for trenching in residential or tight-access outdoor jobs
- Zero tail swing for safe digging near structures
- Dig depth: approx. 8 ft 6 in
- [Link to your Bobcat E20 rental page]
Bobcat E35
- Mid-size machine for deeper or longer trenches
- Good for commercial, multi-house, or foundation projects
- Dig depth: over 10 ft
For jobs that require a deeper or wider trench — or lifting heavy trench boxes — a larger unit may be necessary. You can explore those options on our excavator rental page.
Trenching Tips Before You Start
- Call Before You Dig
Always locate underground utilities before trenching. Use services like Call 811 to mark underground lines. It's the law in most states and prevents serious accidents. - Measure Carefully
Define your trench length, width, and depth requirements in advance. This ensures you rent the right machine with the right bucket size. - Choose the Right Bucket
Narrow buckets are best for trenches — they reduce backfill and digging time. Make sure your rental includes a trenching-specific bucket. - Watch Your Spoil Pile
Keep excavated material at least 2 feet from the edge of the trench. This reduces the risk of collapse and makes backfilling easier later. - Consider Slope or Shoring
For deeper trenches (over 5 feet), follow OSHA regulations for trench safety: sloping, benching, or using protective systems. Learn more about OSHA trench safety.
Trenching Use Cases by Machine Size
| Job Type | Recommended Excavator |
|---|---|
| Irrigation lines in small yards | Bobcat E10 |
| Electrical trench in tight space | Bobcat E20 |
| Water line to detached garage | Bobcat E20 or E35 |
| Drainage trench on commercial lot | Bobcat E35 or larger |
| Multi-line trench with deep specs | Mid- or full-size excavator |
Renting the Right Excavator for Trenching
When renting, ask your provider:
- What size bucket comes with the rental?
- Is a trenching bucket available?
- Do you offer delivery and pickup service?
- How wide is the machine and will it fit my access point?
Our team can walk you through the process, help you select the right excavator size, and even recommend optional attachments like augers or breakers if your project requires more than just trenching.
Need an Excavator for Trenching Work?
We rent Bobcat excavators in multiple sizes, with the right attachments for trenching, grading, and site prep.
Browse our excavator rental options or contact us here to get help selecting the right machine for your job.
