4 Important Checks during Execution

Do you really want to know about the Important checks during site execution? you landed on the right page, you'll learn the basics that every site engineer should know. 

15 Dec 2021

Hello Civil Engineers, I guess whatever we'll be discussing today, you might not be heard before. So read till the end to know the essential parts to be considered in the Construction site.

1. Barricading Construction Site

Three hundred thirteen laborers died at construction sites between 2015 and 2019? However, the numbers are based only on registered cases.

You have been noticing the Excavation barricaded at a distance of 1 m. 

Sometimes Pit is giant in the Excavation site, so Barricaded around the Excavation pit is necessary. It is Necessary so that animals or people will not fall into the Pit. Therefore, almost 1 m space is left around the excavation pit, and tape is applied all around.

Two Types of Tape used around the Excavation Pit

Red- This shows that you can’t be entering the site from anywhere. It’s a highly restricted Zone.

Yellow- You can be allowed to enter with precautions wearing a helmet and with safety measures. 

You must know there are 313 laborers who fell to their death at construction sites between 2015 and 2019. However, the numbers are based only on registered cases.

2. Has the point of height Indicator been installed?

What does that mean?

When JCB Excavating the Pit for Footing, The site in charge put a mark on JCB Handel,

Then, when JCB excavates the Pit, the driver will know what depth he can dig. It is an essential part of the checklist because, as you see, the construction site is very undulating. So point indicator helps the driver know the exact measurement of the Pit.

Point Indicator- That will warn the driver to dig up to a particular Depth. It could be a Rod up to that only Excavation done.

If Excavation is more than the specified- In this case, The Contractor has to do the PCC with their Own Money. They can’t fill the dig with the same soil, leading to failure and developing cracks in the feature. 

So the Height indicator is necessary during Excavation. Government or Client will not give you the material or any money.

3. Are the marking pillars safely barricaded or protected to avoid any disturbance of marking Points?

What does that mean?

Did you know About Bhurji? 

Generally, Brick Pillar or concrete pillars (Bhurgi) are temporary benchmarks taken as a reference for all the building structures put along the side of the Plot. 

Before Excavation, site Engineers have to take Notice of the Bhurji is protected or not. When the JCB excavates the site, they damage the marking pillars (Bhurji) when maneuvering.

4. Has the Required Depth of cut been achieved?

When Doing Excavation for Footing, The first important thing is to know the Types of Soils in the excavation site because the type of soil decides what kind of excavation has to go through. 

 There are 4-types of soil-which you can find in the Excavation site. 

All types of soil-

  • Sandy soil
  • Silt Soil
  • Clay Soil
  • Loamy Soil 

These soils will divide into Firm Soil (Loose soil) or Hard Soil.

General Thumb Rule

  • Depth of Foundation must be at least 5 Ft (if in the future you’ll construct 3 story building)
  • And if you’re sure about not building the above floors-3 Ft is good to go.

If Excavation is beyond 2 m, are there steps provided 

1. Hard Soil- The step Excavation is Done on

Stepped- Figure is sufficient to understand.

  • When Depth is More than two meter-step footing is required.
  • In this case, 50 cm of extra depth is left to take steps on both sides. 

So let’s understand with an example- If you have to excavate a 2 X 2 X 4.9 m Dig. 

Steps to Follow- 

Step1- Starting with 4 m wide-Length and width. 

Step 2- After digging 0.9 m, leave 50 cm from both sides, meaning 100 cm. 

Step 3- Then dig 2 m deep. 

Step 4- Then leave 50 cm on both sides 

Step 5- Finally excavate 2m.

Loose Soil Excavation- sloping is done on this type of excavation

Loose Soil- Sandy soil; make a slope of 1:4

  • The soil is part of a sloped, layered system where the layers dip into the excavation on a slope of four horizontal to one vertical (4H:1V) or greater.
In this case, if you dig more than the specified Trench, the client or Consultant will not give money for packing that extra excavation and have to cast to RCC Slab on that part. 

1. Ordinary Rock- 

 a. Gile Chips stone can be excavated from Hand-No need Breaker Machine. 

 2. Hard Rock 

       a. Need To blast sometimes in the site- If the excavation site is far from the neighbors. 

       b. Need Breaker machine to be Excavated- If there are buildings near the excavation site, the breaker machine is good. 

These BMs served as local references of precisely measured elevation.

They were often on stone posts, milestones, stone embedded into culvert walls, bridges, Railway Platform, temple/church- indicate current day survey of India Topo Maps.

Want to learn such Practical Training in Civil Engineering- Click Here!

Related Read- How to Center Line Layout Done at the site.

Also, Read- What to Check When Slab Centering is done?

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