Why are duct banks color-coded? Color coding is an important safety and identification standard in the duct bank industry. Generally, red is used for medium-voltage…
What is RHO and why does it matter for duct bank design? RHO (thermal resistivity) is a critical factor in medium-voltage (MV) and high-voltage (HV) duct bank layout design. Engineers design duct…
What load ratings are your duct banks designed for? Our standard sections are designed to HL-93 (highway traffic loading) with a 25% design margin above the minimum requirement. We…
How long are the duct bank sections? Standard sections range from 10 to 20 feet in length. The exact length is determined during engineering based on your…
What is the dowel-pin joint system? Our patented dowel-pin system uses 18-inch guide pins that automatically align adjacent sections as they’re set. The operator lowers a…
Can you accommodate custom conduit spacing and configurations? Yes. Every project is custom-engineered to your specifications. We design each section based on your conduit layout, spacing requirements, bend…
Is thermal resistivity testing available? Yes. Thermal resistivity is a critical factor in cable ampacity calculations, and we provide verified thermal resistivity data for our…
What quality control measures are in place? Every section undergoes factory quality control inspection before it ships, including dimensional verification, conduit alignment checks, concrete strength testing, and…
What conduit configurations are available? We manufacture duct bank sections in configurations ranging from 4-way up to 30-way, accommodating virtually any underground electrical or communications…
What concrete strength do you use? Our standard mix designs range from 4,000 to 10,000 psi compressive strength, depending on project requirements. All concrete is batched…
