CSI Fiberglass Manholes
Standard Features:
- Constructed to ASTM D-3753 standards.
- Fiberglass composition withstands attack of hydrogen sulfide corrosion.
- Lightweight and structurally sound.
- Withstand H-20 axial loads.
- Monolithic construction and no field joints.
- Reduces ingress into the manhole.
Eliminate Corrosion and Costly Maintenance/
Rehabilitation:
- Ordinary concrete and brick manholes corrode.
- Fiberglass Manholes do not corrode.
- Fiberglass Manholes resist decades of attack by hydrogen sulfide.
- Avoid street closings, disruption, costly repairs and maintenance of concrete and brick ordinary manholes.
Structurally Sound – Exceeds H-20 Load Rating:
- Fiberglass manholes have been in service for more than 25 years.
- Many installations are in busy streets.
- Fiberglass manholes are designed to withstand rigid requirements of AASHTO H-20 Axle Loads.
- Fiberglass manholes will withstand far more weight than a fully loaded cement truck. ASTM D3753 requires a 40,000 lb. load, placed eccentrically on the manhole with no failure.
Lightweight for Easy Installation:
- Fiberglass manholes are far lighter than concrete, about 60 pounds per vertical foot.
- Light weight makes installation easier, safer, and less costly.
- No need for heavy equipment.
- Less manpower required to move and install the manhole.
Reduce Infiltration:
- Ordinary concrete manholes installed in sections due to weight.
- These joints - every four feet - are the source of most leaks.
- Fiberglass manholes have no joints.
- Available in one-piece lengths from 3 to 25 feet.
- No joints means no joint infiltration or exfiltration.
- Monolithic design makes installation easier.
- Eliminates time needed to make concrete section joints.
Will Not Float:
- Better safety factor against float out than concrete manholes.
- Far smaller wall thickness than concrete means a decrease in volume displacement.
- Decrease in buoyant forces on fiberglass manholes.
Navigate to:
