5 Step Overview Of The Foundation Excavation Process
Posted on: 28 November 2022
The first step in any new home build is installing the foundation, which begins with excavation and ends with the pour. The process is similar for any concrete foundation type, ranging from the common slab to a poured basement foundation. Even raised foundations, like post and pier, often require excavation to prepare.
1. Site Preparation
Excavation always begins with a site engineer surveying and determining preparation steps prior to digging. Preparation may include removing vegetation and tree stumps, leveling the area, and bringing in fill dirt for low areas. During the preparation process, the site is also assessed for things like soil stability and ground movement so that any needed stabilization or reinforcement can be integrated into the process.
2. Staking and Marking
Once the site is cleared and prepped, the next step is to mark out the shape of the foundation and install stakes and lines so your excavators know where to dig. A plan is drafted and marked directly on the ground that will help the excavators know the depth and any special allowances that must be made during the dig. Further, underground utilities and storm drains will also be marked prior to the dig.
3. Excavation and Fill
Finally, the big equipment comes in and your team gets to work on the actual excavation. The length of this process depends on the unique factors of your site as well as the size of the foundation. Generally, though, the basic shape is dug out to the pre-determined depths. Temporary scaffolding may also be put in to add support to the walls of the excavation.
4. Special Installations
Many foundations require some special installations. For example, a slab foundation will require a visit from a plumber and sometimes an electrician so that the initial lines and pipes can be installed as the foundation is poured around these (so drains and electrical connections penetrate through the foundation). Extra supports, such as footing and earthquake supports, may also need to be installed to prevent damage and movement of the foundation in the future.
5. Foundation Pour
The last step is to pour the actual foundation. Concrete forms are put in to ensure the pour is perfectly shaped and smoothed. The pour is typically done all at once, although large or complicated foundations may be poured in stages to ensure proper leveling and smoothing. It will take several days for the foundation to cure so that the work on your new home can continue.
Contact a residential foundation excavation service, such as Stevee Excavation Inc., for more information on the process.
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