Description
8′ x 20′ ESC TSB4 Steel Trench Box
The ESC TSB4-820 is a standard mainline trench shield built for underground utility, pipeline, municipal, and infrastructure projects.
A 20-foot long trench box is typically used with pipe sections that are up to 16 feet long. As a general safety rule it is recommended that a trench shield be at least 4 feet longer than the pipe being installed.
Following this rule provides additional shield length beyond the pipe section and gives the crew more working room for installation and connection work inside the protected area.
Key Benefits & Crew Efficiency
- Ideal for 16-Foot Pipe: Meets the 4-foot safety headroom rule (shield should be 4 feet longer than the pipe joint) to safely accommodate your crew.
- Maximized Internal Clearance: The TSB4-820 offers a generous 60-inch pipe clearance height and 17′11″ between spreaders.
- Capacity Safety: Built with a 971 PSF shield capacity for a C60 soil depth rating of 19’ and a C80 soil depth rating of 15’.
- **4-Inch-Wall Steel Construction: **Weighing 10,000 lbs (without spreaders), this 4-inch wall box provides a lighter, more agile alternative to 6-inch options while safely maintaining a 15-foot depth rating in Class C80 soils.
Product Specifications
| Model | TSB4-820 |
|---|---|
| Dimensions | 8′ High x 20′ Long |
| Wall Thickness | 4 Inches |
| Material | Steel |
| Weight | Approx. 10,000 lbs |
| Pipe Clearance | 60 Inches |
| Length Between Spreaders | 17′11″ |
| Shield Capacity | 971 PSF |
| Max Depth Rating – B45 | 24 ft |
| Max Depth Rating – C60 | 19 ft |
| Max Depth Rating – C80 | 15 ft |
Pricing & Logistics
Price: $19,995.00
Contact us to confirm current pricing, availability and shipping rates.
Freight & Delivery Coordination
Freight & Delivery Coordination
Shipping rates are calculated based on equipment quantity, spreader configuration, and your final jobsite or yard destination. Discounts may be available for multiple box orders or complete fleet packages.
Target Applications
The 8′ x 20′ TSB4 is well suited for larger underground construction and mainline excavation work, including:
- water and sewer mainline installation;
- storm drainage projects;
- pipeline construction;
- municipal infrastructure;
- public works excavation;
- roadway utility installation;
- other underground construction projects requiring a larger working area.
Critical Selection & Safety Factors
Is the 8×20 TSB4 Right for Your Jobsite?
Trench box selection involves more than choosing a height and length.
The right box depends on excavation depth, trench width, pipe diameter, soil classification, surcharge conditions, groundwater, adjacent structures, excavator capacity, transportation requirements, and jobsite access.
The 8×20 TSB4 is worth considering when the project calls for a large mainline shield and you have equipment capable of safely handling a trench box in this weight class.
For smaller excavations, restricted jobsites, shorter installations, or projects with limited handling capacity, another size or a lighter trench box may be a better fit.
We can help you compare available trench box sizes and configurations based on your project requirements, equipment, transportation needs, and preferred working dimensions.
Depth Ratings & Tabulated Data
The listed depth ratings must be evaluated together with the applicable tabulated data and actual jobsite conditions.
The Competent Person on-site holds ultimate responsibility for monitoring soil classifications (A, B, or C), accounting for adjacent structures, managing groundwater, and calculating surcharge loads (such as spoil piles or heavy machinery parked near the edge of the trench).
For help comparing available trench box options, contact our team with your project details and equipment requirements.
Spreader Configurations
The correct spreader configuration depends on the required trench width, pipe or structure dimensions, installation method, and the amount of working clearance needed inside the trench box.
When requesting a quote, send us the project information needed to evaluate available configuration options, including:
- excavation depth;
- soil classification;
- required trench width;
- pipe or structure dimensions;
- project location;
- quantity of trench boxes required.
We can help with spreader options, current availability, equipment quotes, and freight and delivery coordination.
Request a Quote from Iron Lot
Iron Lot supplies trench boxes and trench safety equipment to underground utility contractors, excavation contractors, pipeline contractors, municipalities, public works departments, and other construction equipment buyers.
Contact our team for:
- current pricing and availability;
- spreader options;
- multiple-unit quotes;
- freight and delivery coordination;
- comparison with other ESC TSB4 sizes;
- steel and aluminum trench box options;
- equipment financing information.
Payment Options:
We accept company check, wire transfer, ACH, and credit card payments. We also offer financing through Ascentium Capital.
Financing: Ascentium Capital offers fast and flexible financing. With their quick and convenient way to purchase equipment, working with Ascentium Capital helps you acquire the funds you need for your equipment purchase. With financing and leasing of up to $2,000,000, Ascentium Capital works with you to make the application process simple and at no obligation.
To learn more about Ascentium Capital and how it can assist you, click image below:
