Description
8′ x 12′ ESC ASF4 Steel-Framed Aluminum Trench Box
The ESC ASF4 8′ x 12′ steel-framed aluminum trench box combines a steel frame with aluminum panels to provide a durable trench box for utility, construction, and excavation work. Its 8-foot shield height and 12-foot length provide a useful configuration for localized utility excavations where substantial shield height and additional working length are needed without moving to a longer mainline-style shield.
The ASF4 8×12 has a 1,040 PSF panel capacity and weighs approximately 4,920 lbs. It provides 48 inches of pipe clearance and 124 inches (10′4″) of length between the spreaders.
Manufacturer data provides maximum depth ratings of 27 feet in B-45 soil, 21 feet in C-60 soil, and 17 feet in C-80 soil, subject to the manufacturer’s tabulated data, proper shield configuration, and evaluation by the project’s competent person.
Key Features
- 8′ shield height
- 12′ shield length
- Steel-framed aluminum construction
- 1,040 PSF panel capacity
- 4,920 lb approximate weight
- 48″ pipe clearance
- 10′4″ length between spreaders
- Compact configuration for localized utility and infrastructure excavations
Specifications
| Manufacturer | ESC |
|---|---|
| Product Line | ASF4 Aluminum Steel Framed Shield |
| Shield Height | 8 ft (96 in) |
| Shield Length | 12 ft (144 in) |
| Weight | 4,920 lbs |
| Panel Capacity | 1,040 PSF |
| Pipe Clearance | 48 in |
| Length Between Spreaders | 124 in (10′4″) |
| Construction | Steel and Aluminum |
Maximum Depth Ratings
| Soil Classification | Maximum Depth Rating |
|---|---|
| B-45 | 27 ft |
| C-60 | 21 ft |
| C-80 | 17 ft |
8′ x 12′ ESC ASF4 Price and Spreader Configuration
The 8′ x 12′ ESC ASF4 Steel-Framed Aluminum Trench Box is priced at $17,345 and comes standard with four 36″ spreaders. This configuration provides a complete trench shield setup ready for assembly and use.
Other spreader sizes are available to accommodate different trench widths and jobsite requirements. Contact Iron Lot for available spreader options, pricing, and assistance selecting the appropriate configuration for your excavation.
Applications
The 8′ x 12′ ASF4 can be considered for localized utility excavations where an 8-foot shield height is needed but a longer trench box may be unnecessarily difficult to position. Potential applications include:
- Precast manhole installation
- Valve and meter vault installation
- Utility tie-ins, tees, crosses, and service connections
- Bore pits and receiving pits
- Spot repairs to water, sewer, gas, electrical, and telecommunications lines
- Localized utility exposure and maintenance
- Utility work in streets, easements, and congested jobsites
The ASF4 8×12 is a standard trench shield and should not be assumed to be a purpose-built manhole box. Suitability depends on the actual excavation and the dimensions of the pipe, structure, utility component, and equipment involved. Contractors should verify required working clearances and the manufacturer’s allowable configuration before use.
Steel-Framed Aluminum Construction
The ESC ASF4 series combines aluminum panels with a steel frame, providing contractors with an alternative to conventional all-steel trench shields. At approximately 4,920 lbs, the 8×12 provides an 8-foot shield height and 12-foot working length while remaining lighter than many comparable all-steel configurations. Contractors should verify that the equipment used to transport, install, reposition, and remove the shield has adequate lifting capacity at the required operating radius.
Safety and Proper Use
Trench shields must be selected and used in accordance with the manufacturer’s current tabulated data and all applicable OSHA, state, and local excavation-safety requirements. A competent person must evaluate soil conditions, excavation depth, surcharge loads, groundwater, adjacent structures, equipment configuration, and changing jobsite conditions.
The maximum depth ratings shown above should not be used by themselves to determine whether this shield is appropriate for a particular excavation. Refer to the applicable ESC tabulated data for complete requirements, limitations, and allowable configurations.
Other Steel Framed Aluminum Trench Boxes:
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Order the ESC ASF4 8×12 from Iron Lot
Contact Iron Lot for current availability, alternate spreader configurations, shipping information, and assistance selecting the right ESC steel-framed aluminum trench shield for your project.
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