If you're planning on using a jack post to support a structure, there are a few things you'll need to keep in mind. First of all, it's important to choose the right size jack post for your needs. If you're not sure, it's always better to err on the side of caution and go with a slightly larger size. Secondly, you'll need to make sure that the ground underneath the jack post is level and firm. If it's not, your structure could end up uneven or even collapse.
Once you've selected the appropriate sized jack post and prepared the ground underneath, it's time to install it. The first step is to dig a hole for the base of the jack post. This hole should be about twice as wide as the base of the jack post itself and at least one foot deep. Once the hole is dug, place the base of the jack post into it and fill around it with concrete mix. Make sure that you pack the concrete mix tightly so that there's no risk of instability.
After letting the concrete cure for at least 24 hours, it's time to install your chosen support beam onto the top of the jack post. For this step, you'll need some heavy-duty brackets that are rated for use with your particular type of beam. Once again, make sure everything is level before moving on. Once everything is installed correctly and securely in place, your job is done!