Vertical shores are the quickest way to shore a trench. They are designed to prevent cave-ins in all but the most unstable soil conditions by supporting the sidewalls of the trench through hydraulic pressure. All vertical shores are installed and removed from the top of the trench. Hydraulic vertical shores are lightweight shoring devices that can be installed by a single worker as fast as the trench is excavated.
Vertical shores are used in linear production applications, irregular size pit applications, and other situations requiring spot bracing for repairs, inspections, etc.
These shores are commonly available in rail heights ranging from 1 ½’ to 20’ and with various hydraulic cylinder working widths ranging from 17” to 144”.
They are designed for use in Soil Types A, B & C-60. When soil conditions indicate trench face sloughing or raveling, approved wood sheeting may be used in conjunction with the vertical shores.
NTS multi shores are specially designed, large heavy-duty vertical shores, for use in trenching projects where the depth of the trench is so deep that it exceeds the capacity of the standard vertical shore products. With many of the same operational advantages as standard vertical shores, the NTS multi shore units have 1 1/8” CDX plywood attached to heavy-duty aluminum rails in combination with a series of hydraulic cylinders that make up the complete unit. NTS rents and sells multi shores in standard stock lengths of 10’, 12’, 16’, and 20’ tall. Depending on the size of the multi shore that is right for your project, three to five hydraulic cylinders are used to put pressure on the walls of the excavation. All cylinders are attached to a manifold system allowing individual control of each cylinder. One of the major advantages of the system is that it allows the contractor to raise the multi-shore in lifts while backfilling and compacting.
In the unlikely event that one cylinder is damaged while in service, the damaged cylinder may be isolated and still maintain an active load on the trench until the multi-shore can be safely removed and the cylinder repaired or replaced. All NTS multi-shores come standard with steel corner edge protectors, and where two pieces of plywood are joined, a splice plate/edge protector is used. Heavy-duty steel lifting eyes are an integral part of each unit for assisting in the installation and removal of each multi shore.
Multi shores are installed and removed from above the trench using the excavator or backhoe. NTS also rents certified, engineered multi shore lifting bars, for use in trench widths from 17” to 10’ (wider width available upon request). In the right application multi-shores offer an economical, lightweight, strong, and highly productive alternative shoring solution for deeper projects.
High Clearance Shores
High clearance shores are ideal for big pipe projects. It has a 4 foot by 10 inch clearance from the bottom rail. High clearance shores go up to 6 foot by 11 inch clearance in A or B soils. High clearance shores with steel struts are a must for your projects where pipe clearance is a factor.
Hydraulic manhole shields and braces built upon the concept of steel manhole shields, adding a hydraulic element that can provide proactive soil support during the excavation process.
Hydraulic Manhole Shields Features
- Consists of a hydraulic manhole frame attached to OSHA-compliant sheeting
- Available in 4’, 6’ and 8’ heights
- Can act as a static or proactive support system
- Stackable for depths up to 20’
Hydraulic Manhole Braces Features
- Hydraulic cylinders with steel oversleeves that provide four sided soil support for an excavation
- Typically used with finn form, steel sheeting, steel plates or other OSHA-compliant sheeting
- Available with 2” and 3” cylinder configurations depending on project requirements
Aluminum Waler Systems
Horizontal Waler Systems are designed for less stable soil conditions such as Soil Types C-60 and C-80 requiring tight or intermittent sheeting. Lightweight aluminum alloy construction allows for quick installation and removal from above the trench.
Waler systems are designed to provide protection and system flexibility needed to work around crossing utilities and repair points in addition to production trenching. Waler system standard duty and heavy duty rails are commonly available in lengths of 8’, 10’ and 16’. Common hydraulic cylinder working widths range from 17” to 144”.
End loading capability of steel tube encased cylinders may allow for optional 3 sided or 4 sided enclosure and trench wall cave-in prevention.