Airport manhole covers & gratings are drainage components used on the airport drainage system. This article discusses the drainage project of Bali Airport.
The drainage project of I Gusti Ngurah Rai International Airport is a replacement project for drainage components used in this airport area. The project aims to replace the old drainage components that are already obsolete with new drainage components.
The drainage system at I Gusti Ngurah Rai International Airport uses cast iron manhole covers and cast iron gratings. In this project, Infiniferro contributes by supplying the drainage components. The following is a description of the manhole covers and gratings that we have supplied.
1. Ductile Iron Manhole Covers of Bali Airport
Airport Manhole Covers Design
On the drainage channel at I Gusti Ngurah Rai International Airport using ductile iron manhole covers consisting of 10 designs:
- D650 Round manhole cover
- D550 Round manhole cover
- 750x550x100 mm Rectangular manhole cover
- 700x700x100 mm Square manhole cover
- 600x600x100 mm Square manhole cover
- 500x500x100 mm Square manhole cover
- 450x450x100 mm Square manhole cover
- 1675x1165x103 mm lift pump manhole cover
- 1680x620x103 mm lift pump manhole cover
- 750x750x105 mm lift pump manhole cover
One unit of manhole cover consists of two parts, namely frame and cover. On the frame, there are holes to strengthen the installation on the concrete foundation. When pouring concrete, the holes will be filled with concrete. So that when the concrete hardens the frame will be strongly installed.
While the cover is designed with embossed motifs and letters. It can serve as an anti-slip and also an identity. The cover also comes with a keyhole for easy opening and closing the manhole covers.
Material for Making Airport Manhole Covers
Manufacturing of airport manhole covers using ductile iron material (grade-A cast iron). The ductile iron material has characteristics:
- Wear-resistance
- Adequate toughness
- High score in fracture test
- High score in the tensile test
- Good machining capability
Hence manhole cover of I Gusti Ngurah Rai International Airport including heavy-duty type. A heavy-duty manhole covers able to withstand heavy loads through it like an airplane. So it is appropriate to use in the airport area where there is airplane traffic.
Manufacturing of Airport Manhole Cover
Above is a 3D image design (drawing) of the Bali Airport manhole cover. We use 2D & 3D drawing and simulation programs to draw the design. The drawing process is an early stage in the manufacture of cast iron manhole covers. Also, this process is important because it affects the next process until the final outcome. A Proper drawing will produce the right product or on-demand.
After the drawing is complete, we continue to the next processes which are: pattern making, mold making, melting and pouring, finishing, and quality control.
Use of Airport Manhole Covers
Manhole covers have the primary function as a cover on a manhole in the drainage channel. While the manhole serves as the entrance for technicians when doing maintenance. Besides the installation of the manhole cover also aims to prevent people from falling into the manhole.
2. Cast Iron Gratings of Bali Airport
The old gratings of Bali Airport are steel grating. For use in an area with heavy load vehicle traffic, a steel plate material is less proper. Steel grating in the long term will be deformed due to withstanding the heavy load.
Gratings that have been curved, someday will eventually be broken. So it can not last for a long time. Bad grating conditions can disrupt air traffic because the plane will shake as it passes through it.
Airport Gratings Design
Gratings for Bali Airport consist of three designs and sizes:
- 1000x420x105 mm
- 997x420x105 mm
- 995x415x105 mm
Airport gratings have a rectangular design and holes in the middle. The holes on the gratings serve as water entrances on the surface of the drainage line. Thus, the water will flow quickly and does not cause puddles.
On the surface of the gratings, there is an embossed letter of the project owner’s name and logo, and also the year of project execution. The motif on the surface of gratings can serve as an identity.
Cast iron gratings have a design without frames to install directly on the concrete foundation. The surface of the gratings shall be flat with the surface of the installation area. This is intended to avoid shocks when the vehicles pass. If you want a stronger installation, you can use bolts to hook the gratings to the concrete foundation.
Airport Gratings Material
To manufacture airport grating use the same material as the airport manhole covers that are ductile iron. Thus the gratings have good strength and are not easily broken.
Airport Gratings Manufacturing
The manufacturing process of airport gratings is the same as airport manhole covers, that is through a metal casting process. This process consists of drawing, pattern making, mold making, melting and pouring, finishing, and quality control.
Usage and Installation
Installation of the gratings is in a row and connecting between one grating with the other grating along the drainage channel at the airport. The use of grating in the airport area is usually in an open drainage system in the area between the apron and runway. Hence the cast iron gratings can serve as a bridge and prevent people from falling into the drainage channel.
Conclusion
The airport drainage system has an important role in the safety of flight operations. Because if there are puddles in the runway area it may endanger the take-off and landing process. For the airport area, often using drainage components such as ductile iron manhole covers and gratings. This material has good resistance and strength so that it can withstand the load of the airplane passing through it.
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Hi
is the cover you specify watertight?
can it be used along a rubber gasket?
thank you
Hi,
This cover is not watertight.
We can also make watertight covers if you need them.
Please email your quotation to info@infiniferro.com
Thank you