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(vii) Bituminous Materials: In some cases, bituminous materials like asphalt or bitumen may be used for the base or floor of manholes. These materials provide a smooth surface, help to prevent groundwater infiltration, and offer resistance to chemical attacks.

Step irons are predominantly installed in pits that house equipment, storage, or utility services. Without appropriate access solutions, these pits can become hazardous zones, leading to potential accidents and injuries. The primary importance of step irons lies in their ability to offer a stable point of access for individuals working in environments where height differentials exist. By providing a reliable means for workers to enter and exit these pits, step irons significantly reduce the risk of slips, falls, and other related accidents.

Conclusion

As the world of shipping evolved with advancements in technology, the role of cannon bollards began to transition. The introduction of steam-powered ships and later, container vessels, brought about changes in mooring practices. Despite this shift, cannon bollards remained a resilient part of port architecture, embodying a romanticized view of the maritime past. More importantly, they recognized the enduring connection between the sea and the cities that thrive along its shores.