Description
8′ x 20′ ESC TSB6 Steel Trench Box
The ESC TSB6-820 is a heavy-duty mainline steel trench shield built for underground utility, pipeline, municipal, and infrastructure projects. Its 6-inch-wall construction provides a durable configuration for contractors who need an 8-foot shield height, an extended working area, and strong depth capability.
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 by providing additional shield length beyond the pipe joint to safely accommodate the crew.
- Heavy-Duty 6-Inch-Wall Design: The TSB6-820 provides greater shield capacity and stronger depth ratings than the comparable 4-inch-wall TSB4-820.
- Extended Mainline Working Area: Provides 17′11″ of clear length between spreaders for pipe placement, joining, utility connections, and underground installation work.
- Increased Internal Clearance: The TSB6-820 provides 64 inches of pipe clearance for larger pipe and utility installation requirements.
- Capacity Safety: Built with a 1,573 PSF shield capacity and maximum depth ratings of 29′ in C60 soil and 23′ in C80 soil.
- Heavy-Duty Steel Construction: Weighing approximately 11,895 lbs without spreaders, the TSB6-820 combines an 8-foot shield height with the extended working area of a 20-foot mainline trench box.
Product Specifications
| Model | TSB6-820 |
|---|---|
| Dimensions | 8′ High x 20′ Long |
| Wall Thickness | 6 Inches |
| Material | Steel |
| Weight | Approx. 11,895 lbs |
| Pipe Clearance | 64 Inches |
| Length Between Spreaders | 17′11″ |
| Shield Capacity | 1,573 PSF |
| Max Depth Rating – B45 | 37 ft |
| Max Depth Rating – C60 | 29 ft |
| Max Depth Rating – C80 | 23 ft |
Pricing & Logistics
Price: $22,225.00
Contact us to confirm current pricing, availability and shipping rates.
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′ TSB6 is designed for contractors performing underground utility, pipeline, municipal, and infrastructure work where an 8-foot shield height, extended mainline working area, and heavy-duty 6-inch-wall construction are required.
Typical applications include:
- water and sewer mainline installation;
- storm drainage projects;
- pipeline construction;
- municipal infrastructure;
- public works excavation;
- roadway utility installation;
- underground construction requiring increased pipe clearance;
- other mainline excavation work requiring an extended protected working area.
The 20-foot length provides crews with substantial room for pipe placement, joining, and connection work. On suitable projects, the longer configuration may reduce the frequency of repositioning compared with shorter trench boxes.
The 8-foot panel height and 64-inch pipe clearance make the TSB6-820 a practical option for larger utility installations where additional vertical clearance and longitudinal working room are required.
Critical Selection & Safety Factors
Is the 8×20 TSB6 Right for Your Jobsite?
Trench box selection involves more than choosing a height and length.
The correct shield depends on excavation depth, trench width, pipe dimensions, soil classification, surcharge conditions, groundwater, adjacent structures, excavator capacity, transportation requirements, and jobsite access.
The 8×20 TSB6 is worth considering when a project requires an 8-foot-high mainline trench shield with greater capacity and depth capability than a comparable 4-inch-wall box.
Its 20-foot length provides an extended working area for larger underground utility and infrastructure projects. Contractors should also account for the transportation, lifting, and handling requirements of a trench box in this size and weight class.
For projects where a lighter 4-inch-wall configuration provides adequate capacity, the TSB4-820 may be a better fit. For projects requiring a more compact footprint, an 8×16 TSB6 may be more appropriate. For projects requiring additional longitudinal working room, an 8×24 TSB6 may be considered.
We can help you compare TSB4 and TSB6 trench box configurations based on your excavation requirements, pipe dimensions, handling equipment, transportation needs, and preferred working clearances.
Depth Ratings & Tabulated Data
The listed depth ratings must be evaluated together with the applicable manufacturer tabulated data and actual jobsite conditions.
The Competent Person is responsible for evaluating excavation conditions, determining the applicable soil classification, accounting for surcharge loads and adjacent structures, and selecting and using the protective system accordingly.
Groundwater, excavation geometry, spoil pile placement, heavy equipment near the excavation, and other site-specific conditions must also be considered.
The dimensions of the pipe, structure, or utility component must be reviewed to confirm that it can be installed within the available pipe clearance, spreader spacing, and working area of the shield.
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 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 dimensions;
- required working clearance;
- 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;
- stacking pins and stacked configuration requirements;
- multiple-unit quotes;
- freight and delivery coordination;
- comparison with other ESC TSB6 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:
