City Of Frederick WWTP – Anaerobic Digester Pipe Support Rehabilitation

Johnston Construction Company

• Johnston Construction Company served as Prime Contractor for rehabilitation of piping-support systems within both anaerobic digesters at the City of Frederick Wastewater Treatment Plant.
• Fabricated and installed a new center pipe-support tower in each digester to support the existing process piping systems.
• JCC installed new supports beneath existing digester piping, coordinating the work with piping-support improvements already included in the broader digester upgrades.
• Furnished galvanized support materials including 6-inch ductile-iron pipe saddles with yokes for the digester piping system.
• Furnished approximately 240 linear feet of 3-inch galvanized extra-heavy pipe and associated 3-inch 150-pound forged-steel slip-on flanges for fabrication of the support system.