Square Manholes With Holes

Overview

Square Manholes With Holes are access structures used in drainage, sewer, and underground utility systems to allow inspection, maintenance, and safe personnel entry. Their square geometry provides efficient load distribution and ease of installation, while integrated holes allow for lifting, ventilation, or utility connections.

Standards & Compliance

These manholes are manufactured in accordance with EN 476 and EN 752-1 standards. According to EN 752-1, a manhole is defined as a chamber with a removable cover on a drain or sewer that permits personnel access for inspection and maintenance.

Load Classification

• C250: Rated for loads up to 25 tonnes, suitable for pavements, parking areas, and light traffic zones
• D400: Heavy-duty rating up to 40 tonnes, designed for roads, highways, and areas exposed to heavy vehicular traffic

Applications

• Drainage and sewer systems
• Inspection chambers
• Storm water overflow structures
• Street-type drainage (infall works)
• Outfall works
• Valve and utility access chambers

Design Features

• Square shape for optimal load transfer and stability
• Integrated holes for handling, ventilation, or service connections
• Removable cover for easy access and maintenance
• Robust construction suitable for long-term underground use

Materials & Construction

Manufactured from high-strength materials such as ductile iron or reinforced structures to ensure resistance against corrosion, mechanical stress, and environmental conditions.

Advantages

• High load-bearing capacity for urban and industrial environments
• Compliance with European standards
• Long service life with minimal maintenance
• Safe and reliable personnel access
• Suitable for a wide range of infrastructure projects

Typical Use Areas

Square Manholes With Holes are widely used in municipal infrastructure projects, industrial facilities, road construction, and utility networks where safety, durability, and accessibility are critical.