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common techniques and strategies for excavation

Each site needs to be evaluated based on the types of materials that need to be removed as well as the techniques that should be used for the excavation. There are three types of excavation that might be used based on the circumstances of the job site:

In most situations, common excavation can be used, which includes all types of excavation with the exception of rock or other classifications, such as all rippable materials or asphalt type pavement. Typically, this work involves removing the soil materials that fall within the contract limits. But, it might include existing pavement as required

When a material is listed in the plans but doesn’t fall under that defined excavation categories, including concrete pavement, then it is still often called common excavation. During this step of embankment construction, the plans usually include excavation, hauling, disposal, and compaction of the materials. As a result, it is usually necessary to have a soil sample and testing completed to determine the right moistures and compaction requirements before placing the concrete

common techniques and strategies for excavation

When only a few samples are used, then a 5-inch auger can be sufficient to obtain the samples. It might be necessary to use a three-foot extension section of pipe so that the desired depth can be reached. If samples are needed at a depth of more than 5 feet, then the grading contractor will need to supply an operator and backhoe to obtain the necessary samples

Information needs to be recorded about where the samples should be taken to go with the submission of the samples. In most situations, the samples need to be at least 25 lbs, or up to 65 lbs or granular materials. Then, a small portion of each sample is saved in case it is needed for reference in the future

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