What Do Muck And Fill Mean In Civil Engineering?
What Do Muck And Fill Mean In Civil Engineering?
The terms muck and fill-in site work refer to the removal of unsuitable material and replacing it with more suitable material. This process is often necessary when preparing a site for construction, as it ensures that the foundation will be stable and secure.
In some cases, mucking and filling may also be necessary to improve drainage or deal with other issues that could impact the safety or integrity of the finished project.
Muck is the material removed from the earth during trenchless boring or drilling, such as rock, soil, mud, dirt or any combination of materials. It is often seen as having little or no value. Fill is the material used to replace the muck that has been removed.
Muck excavating is when very wet soil is removed from the ground and cannot be used for fill until it has been dried out. Mucking and gutting refers to the removal of mud, muck, silt and other typically semi-solid material from a home caused by water inundation.
What Are Some Of The Common Issues To Be Aware Of When It Comes To A” Muck And Fill “Operation On Your Site?
When it comes to muck and fill operations on your site, there are some common issues you need to be aware of.
- Hire a Professional Soils Laboratory
One of the most important steps in managing muck and fill operations is hiring a professional soils laboratory to oversee the operation.
They can ensure that the material being removed is adequately removed, and the material being brought into the site to replace the mucked material is the proper material.
This step is crucial to avoiding contamination of your site and reducing the risk of structural failure.
- Develop a Systematic Procedure for Trucking Tickets
A systematic procedure should be developed that generates the proper trucking tickets to allow proper billing and substantiation of the cost. It is highly recommended to use separate tickets for each truck coming into the site and leaving.
In most instances, we recommend that the professional lab onsite be responsible for the tickets. This method will help you keep track of the quantity of material going out versus the incoming material.
- Account for Packing Factor
The quantity of material going out is not necessarily the same as the material coming back. Due to the need to compact the material coming back, there is a packing factor that will cause the incoming material to be approximately 33% more than the outgoing material.
This difference should be accounted for in the management plan to avoid overspending on unnecessary material.
- Determine the Size of Lifts
Dependent upon the type of site and the type of material, the replacement material may need to be placed in what are called lifts.
A lift is a level of fill that is placed prior to being compacted. Depending on the soil, the lift maybe as small as 6″ or as large as 24″.
It will all depend on the structural need of the resultant material. The professional lab will be able to test the material and determine the size of the lift to be placed.
This step will help you avoid overcompacting or undercompacting the material, which can lead to structural failures.
- Optimize Trucking
It is more economical to have the same trucks that are bringing in the material, load out the material. A one-way loaded truck is double as expensive as a two-way loaded truck.
It is always best to find that replacement material at a quarry or stockpile that can also take the material being hauled out.
In many instances, the trucking is the most expensive part of the entire operation. By optimizing trucking, you can significantly reduce the overall cost of the project.
- Check for Contamination
If the material being removed is actually contaminated, have the material checked by a qualified environmental company and have it deposited at a legitimate dump. This is important both for your benefit and the benefit of the client.
You do not want to be associated with illegal dumping of contaminated material. If the material is contaminated, be prepared for a heavy cost burden. The dumping of contaminated material, depending on the material, is very expensive and the trucking can be several hundred miles away.
- Other Methods of Managing Unsuitable Material
There are other methods of managing unsuitable material on site, such as combining the material with stone or crushed concrete, or diluting the material with clean material to reduce the amount of contaminants.
However, it is important to consult a professional soils laboratory to determine the best course of action for your site.
By following the above steps, you can ensure that your muck and fill operations run smoothly, safely, and cost-effectively. For more information, consult with a professional soils laboratory to develop a customized management plan for your site.