In selecting and determining the cast iron manhole covers should pay attention to some things that can affect efficiency and effectiveness. These include manhole cover design, motifs, accessories, strength, and finishing process. Here are tips on choosing cast iron manhole covers for 9 types of projects.
How to Choose Manhole Cover for Building and Infrastructure Projects?
1. Residential Home
a. Medium Duty Strength
You can choose medium-duty type manhole covers because the residential area is not passed by heavy vehicles. Vehicles passing through this area are motorcycles, family cars, to light commercial cars. Even some of the manhole covers for the residential area are not passed by any burden because it is placed in a hidden area that you rarely access.
In addition, selecting medium-duty manhole covers is also more efficient. Because the price of the medium-duty manhole covers is lower than the heavy-duty manhole covers.
b. Standard Design
Cast iron manhole covers for the residential area do not need custom design such as using a logo or special colors. This we adjust to the previous point a, in which the placement of the manhole covers is in the area that is not visible so do not need a logo and certain colors.
The standard manhole covers size include D400, D600, and D800. Cast iron manhole covers of that size are usually ready stock or at least available for the pattern. So that the manufacturing process can be faster because the pattern is already available.
c. Airtight
It would be better if you use airtight manhole covers so the smell from the septic tank does not spread. The airtight design uses an airtight seal that attaches to the frame. Thus there will be no cavities or gaps between the frame hole and the cover part.
In addition to functioning as airtight, the use of this seal can also make the manhole cover becomes watertight. So when it rains, the water will not enter into the septic tank.
2. Apartment
a. Medium duty type
In the apartment area, no heavy vehicles are passing by, so you can choose the medium-duty type cast iron manhole cover.
b. Airtight
Cast iron manhole covers in the apartment area are used to cover the sewer. An apartment is a place to live every day so must make the occupants feel at home. The unpleasant smell of the sewer can be solved by using an airtight manhole cover. Thus the occupants of the apartment will not smell it.
c. Custom design
You can add motifs like name and logo of the apartment on the cover part. These motifs can serve as an identity to indicate ownership. Generally, the manhole covers are black. But for this custom design, you can choose striking colors to paint the manhole covers.
d. Without hinges
For an apartment area, you can choose cast iron manhole covers without hinges. Because the apartment area is a safe area and full of security. So the manhole covers do not require additional safety such as hinges.
3. Hotel
a. Airtight
For hotels, guest convenience is a priority. Do not let the stinging smell of sewer be smelled by hotel guests. Therefore the manhole covers you use to cover the sewer must be airtight.
b. Custom design
Although it serves to cover the sewer, the manhole cover for the hotel area should be custom-designed. You can add the hotel name and logo, as well as attractive colors. Thus the manhole cover can be an aesthetic function that is to beautify hotel building.
c. Round shape
A round cast iron manhole cover has better resistance than a square cast iron manhole cover. Because it has no residual stress, this residual stress is evenly distributed on each side. A round manhole cover is also easier to move or open. In addition, it is easier to dig a round hole.
4. Manhole Covers for Office Area
a. Medium duty type
The type of vehicles that usually pass in the office area is light load vehicles. So that the medium-duty manhole cover can withstand the load of vehicles that pass in the office area.
b. Anti-slip motif
The office area must always be crowded with passing office employees who walk to and from the office. To avoid slip, the manhole covers used in the drainage channels of the office area should be designed with anti-slip motifs.
c. Company Logo
You can add a company logo to the manhole cover design. The logo may indicate the ownership of the drainage system in the office area.
d. Recessed manhole cover
Office area often uses recessed manhole covers on the drainage channel. This manhole cover has spaces that you can fit in tiles or other materials according to the surrounding environment. So it can beautify the office environment. Other than that, people will not realize that there are manhole covers and drainage channels there.
5. Waste Water Treatment Plant (WWTP)
Waste Water Treatment Plant is a project to realize a good sanitation. So the environment becomes cleaner and the citizens are protected from various diseases caused by environmental contamination.
a. Medium duty type
The project is located in the neighborhood of a residence. At this location, no heavy-load vehicles are passing by. So you can choose medium-duty manhole covers.
In addition, the selection of medium-duty manhole cover is also due to the project’s budget while the needs for manhole cover were numerous. A medium-duty manhole cover has a more economical price than a heavy-duty manhole cover. So choosing medium-duty manhole covers will be more efficient and not exceed the budget.
b. Round shape with name
As we already know, a round manhole cover has more advantages than a square manhole cover. A manhole cover for environmental sanitation projects should be selected that are round. Also, you can add letters of the project name and location on the cover part.
c. Using hinges and locks
The environmental sanitation project site is an open area without special security. To anticipate the missing manhole cover, you should choose the manhole covers that use hinges. The hinges serve to unify the frame and cover so it will not separate. If it is still less secure, you can add the lock as additional security.
d. Shipping charges
These shipping charges are also related to the project budget. You should order manhole covers in advance of the deadline for its use. So we have more time to condition the production process until delivery. Shipping charges for manhole covers will be cheaper if the delivery is done before the deadline. Thus, will not exceed the project budget.
6. Manhole Covers for the Pedestrian Zone
The sidewalks or pedestrian zone is an area reserved for pedestrians. A pedestrian zone usually exists in big cities with busy vehicle traffic. So it provided a special area for pedestrians to be safe and not interfere with the traffic on the highway.
a. Unique design
Manhole covers unique designs, for example with the logo and name of the city. The logo and name of the city on the manhole cover design can show the hallmark of the city. In addition, the unique manhole cover design can attract the attention of the pedestrian.
b. Use hinges
There are two types of manhole covers, with hinges and without hinges. You can use manhole covers with a hinge in the pedestrian zone. These hinge aim to secure the manhole covers so as not to be lost.
c. Square design
You can choose square manhole covers for use in the pedestrian zone. This square design we choose to match the tiles that you use in the pedestrian zone which also has a square shape.
d. Medium duty type
The pedestrian zone is only passed by pedestrians, no vehicles pass by there. So you can choose medium-duty manhole covers for you to use there.
7. Cast Iron Manhole Covers for the Airport Area
The drainage system at the airport is designed to avoid puddles at various airport facilities such as runways, taxiways, and aprons. Because the presence of puddles in these areas could endanger the flight.
a. Heavy-duty type
Use heavy-duty manhole covers for airport areas because the airplanes passing over the manhole cover have a heavyweight. The weight of an airplane can reach 280 tons in an empty condition and the maximum weight for taking off reaches 560 tons. A heavy-duty manhole covers able to withstand the load of an airplane passing through it.
b. Round shape
You should choose a round manhole cover for use in the airport area because it has better resistance. So it can last longer though often passed heavy load.
c. Have holes
Besides have a round shape, airport manhole covers should have holes on the cover part. These holes serve as the water entrance to the drainage channel so as not to cause puddles.
d. Special motifs
You can add motifs like company name and logo on the manhole covers. Also, you can add numbers that indicating the strength of manhole covers or load that the manhole covers can hold.
8. Choosing Cast Iron Manhole Covers for Power Plant Project
There are two possible uses of manhole covers in the power plant area. First, the use of manhole covers as a drainage channel cover at the power plant. This is a basic function of the manhole covers that are generally used to cover drainage channel. Second, the use of manhole covers as a cover for access way to electricity lines in the power plant.
a. Heavy duty type
In the area of power plant often pass heavy vehicles, so you should use heavy duty manhole covers.
b. Hot dip galvanize finishing
Hot dip galvanizing is a process of dipping iron/steel products into a zinc liquid, so that the products are more resistant to corrosion. This process we do in the finishing stage. Manhole covers which through hot dip galvanize aims to keep the manhole cover resistant to acid and rust.
c. Special sign
If you use the manhole cover to close the access point to the main electric line, you should add a special mark on the manhole cover. For example with the word “danger” or danger symbol. It aims to make people more alert and careful when in the power plant area.
d. Use seal
The last tips on choosing cast iron manhole covers for power plant area is to pair the seal on the frame of a manhole cover. Manhole covers that you use as the cover of the electric line should use seals, so that water does not enter there.
9. Choosing Cast Iron Manhole Covers for Gas Station Area
a. Heavy duty type
Types of the vehicle passing gas station area are motorcycles to container trucks. Therefore, it is better to select heavy duty manhole covers that can withstand heavy loads.
b. Round shape
As we discussed earlier, that round manhole covers have better resistance if we compare with square manhole covers. Especially for the use of heavy load, round manhole covers tend not to crack although passed by heavy loads.
c. Anti-Slip motif
Anti-slip motifs are used to prevent customers from slipping when passing the manhole covers. Considering the gas station always crowded with customers every day. Anti-slip motifs can be a square pattern and diamond motif on the manhole cover.
d. Without hinge
One of the functions of the hinge is for security. Because the gas station area belongs to a secure area, then you do not need to use a hinged manhole cover.
Hi.
Thank you for this article. This article is very helpful. Different sectors and industries need different types of manhole cover. Each Application requires a different diameter, size of manholes at various angles and elevators. Companies like Crescent Foundry manufacture manhole covers with different shapes and sizes. You just need to choose a manhole cover according to your need.
Hi.
Thank you for visiting infiniferro.com and reading this article.