Cutting concrete can be done in various ways, one of the simplest way is cutting off concrete with concrete saws and saw blades. It produces a perfect cut and you can cut in shapes you want easily. The only disadvantage for concrete saw and saw blades is it’s too dusty, so you have to prepare face dust masks or glass spectacle so that it can protects your eye and mouth from the dust.

Sometimes concrete curb has to be cut, but in this article that will be only cutting off concrete slab. Some precast concrete curb is constructed in lengthy way, after the precast concrete curb is properly cast, concrete cutting machine has to be used to cut them in certain length and ready for delivery.

How To Cut Off Concrete With Concrete Saws and Saw Blades

1) First, you may need to have a concrete saws and saw blades. You have to learn how to use it.

2) Find a concrete slab that is meant to be cut.

3) Use a plywood as the guideline.

4) Turn on the engine of concrete saws and saw blades.

5) Wearing face dust masks or glass spectacle to protect your eyes from the dust.

6) Draw a line by cutting the concrete slab in shallow and use the plywood as guideline.

7) Following the shallow line, cut the concrete slab in the depth you want.

8 ) After done one side and you can cut another side.

9) Do some cleanup work.

10) Done!

It’s the easiest way to cut off the concrete with concrete saws and saw blades, but it’s good to have safety equipments to protect workers when cutting the concrete with the machine. In construction, contractor always says “Safety First” before the work can be done!

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Concrete Curb can be done by using precast method, but sometimes contractors might choose to use cast-in-situ method too which is casting the concrete curb at construction site. By using cast-in-situ method, it doesn’t require any concrete curbing machine. With that said, the cost can be save from here without using any machinery.

In constructing a longer straight concrete curb at the construction site, it might requires more workers to complete the job on time. With that said, the cost will be increasing on this part. Other than this, contractor must ensures that the workers can complete the casting and make it in shape because the concrete will be fixed in certain period.

How To Build Concrete Curb By Hand

1) Build up the mold or formwork which is in concrete curb shape.

2) Mixing the concrete in correct mixture.

3) Pouring the concrete into the mold or formwork just now.

4) A few of workers are starting to smoothen the concrete curb with a timber plank. Workers must compact the concrete curb so that it won’t be collapsed or cracked easily. Workers must complete this task as soon as possible before the concrete fixed in shape.

5) After the workers have done the concrete works, they might need to take off the formwork or mold after the concrete is fixed in shape. Job is completed and workers have to continue other works like drainage system.

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Precast Concrete Drop Kerb is one type of concrete curb that used on the roadside. Other than constructed on the roadside, it’s used on the pedestrian crossing too. The precast concrete drop kerb is constructed as a slightly slanting slope. When walkway passengers are walking on the walkway, they cross the road and this precast concrete drop kerb makes them easy to cross the road.

How To Construct Precast Concrete Drop Kerb

That’s not difficult to construct these kerb, since the drop kerb is a precast product and it saves a lot of time instead of casting it on the site. Most of the contractors use precast product instead of casting it on the site, because it’s not only saving cost and also times.

1) Earthwork
You have to make sure that the condition of soil is strong enough to support the works on the ground. Otherwise, you can do a soil investigation to test the condition of soil. After that, fill about 200mm thick sub-base.

2) Concrete Base
After the earthwork is done, construct a concrete base to support the drop kerb. Mass concrete can be used to construct the concrete base since the load of the drop kerb is small. The concrete base is a cast-in-situ concrete. The insitu concrete surfaces below ground level shall be coated with road oil to avoid the water flow into the concrete.

3) Drop Kerb
Lay the drop kerb on the concrete base. The drop kerb base have to haunch with Bituminous Double Coat Paint before lay on the concrete base.

4) Pavement & Road Work
After the drop kerb is done, other works like pavement works and road works to be constructed. Pavement works consist of lower roadbase, upper roadbase and wearing course. While road works consist of 200 x 100 x 60mm grey paving blocks in Herringbone Pattern.

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What is Concrete Road Curb

Concrete road curb is the road edging where a flat pavement or path meets an unflat street or walkway, the level of both roads is different and the water will flow to the lower level portion.

It’s one type of concrete curb called combined curb and gutters. It’s commonly used to overcome the flooding problems.

Normally road curb is made from concrete, stones, alphalt and etc, but concrete and alphalt are commonly used for road curb in construction industries. Wherever you go on the road, you can see the concrete road curb besides the walkway.

Photos Of Concrete Curb At Site

Below is some photos that I took while I went to site. This is a very simple concrete curb.

- Straight Concrete Road Curb -

- Curved Combined Concrete Road Curb And Gutter -
[It's same with straight concrete road curb but it's just constructed follow the road line]

- Direction Of Flow And Concrete Slab Cover -
[There will be a small hole that allows the water flows in into the drainage]

- Drainage System -
[The water will flows into the drainage system]

Function Of Concrete Road Curb

There is a few of function and usage for the concrete curb at the roadside. There will be a few purposes of installing concrete curb :

i) Avoid Flood
It’s works as a gutter that allows the water flow in by lower road level and flow into the drainage.

ii) Safety To Driver And Motorcyclist
If there is no concrete curb there, driver might drives onto the walkway and people on the walkway might get hurt. Other than this, if there is no concrete curb as a drainage system, there must be flood when raining, the water might stopped at the roadside without flow into the drainage in proper way. It’s very slip, when motocyle or car pass by, the tires can be slip and cause them to lose visibility and ability to brake and stop down, it may causes an accident.

Type Of Concrete Road Curb

i) Basic Curb

That’s very easy to construct basic concrete curb because you don’t have to joint it with gutter, it’s a straight concrete curb. But it’s rarely used it can’t helps to overcome the flood problems, it’s only used in minimal location.

ii) Combined Curb and Gutter

This type of concrete curb is a combination of curb and gutter, the photo above shows that the gutter is used for the water flowing into the drainage system. This is commonly used in driveways everywhere.

iii) Integral Curb

This type of concrete curb are constructed as a part of sidewalk too. As you see in the photo above, the concrete curb is joining concrete sidewalk. Normally it’s cast-in-situ, which mean the concrete curb is constructed on the spot at the site.

iv) Kassel Curb

Kassel curb is purposely constructed for the buses especially in bus stops. Normally the basic concrete curb has a lower level and it’s difficult to passenger to enter the bus which has higher steps. Kassel curb has been raised up to improve accessibility for mobility-impaired passenger.

v) Precast Curb

Of course, there are some precast concrete curb too which is produced in the factory and bring to site whenever there is an usage of relevant concrete curb. Precast concrete curb will be used if the client need a faster completion of work, of course the prices for those precast concrete curb will be slightly higher than cast-in-site curb.

Pattern Of Concrete Road Curb

There is many patterns for concrete curb, as you see in the photo above, there are angle, round, mower, multi lighted, angle lighted, walkway, parking, square, wheel block and etc. Rounded concrete curbs are most commanly used for driveways that the sidewalk has grassy setback from the street.

The photo named “Straight Concrete Road Curb” above is using a wheel block concrete curb, while this pattern are commonly used for the sidewalk that lay with premix.

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