The space meant for car need not necessarily occupied by car only. You can alter into a guest room or home office as per your requirement. All you have to do is do the task patiently and follow the instructions closely. This article gives clear instructions for laying the foundation of your garage.
How to lay foundation for your garage
Before starting the work, first you have to decide how many cars you are going to park inside the space. After your plan is ready, collect all the necessary materials like stakes, 2 by 6 and 2 by 10 boards, inches rebar, foundation bolts, concrete and some sand.
Mark the area where the garage is to be built. Draw a line using a chalk and mark the area to become more visible. Dig the footings and pull the dirt out to have a clear hole. Make out the hole for 18 inches depth and roughly 1 to 2 inches wide. Take time to dig out properly and cut other 2 inches depth for allowing the sand inside. Place the 2 by 10 board in place and pour the concrete inside it. Ensure you are making the outside form higher than the length of the slab. Take the other form board measuring 2 by 6 and keep it inside portion of the outer form board. Make use of the stakes for holding the form board firmly. Similarly place the form board throughout the area of marking on three sides of the parking area.
Keep the foundation bolts in proper place. Use concrete chemical or any fuel for spraying the inside portion of the form board and allow it to dry. Put some sand into the slab area. You can also make use of vapor barrier in the middle, which prevents the moisture oozing out from the concrete. Rake over the sand smoothly and add little water to it. Lay out the inch grid on the center portion. Pour enough concrete inside the footings and ensure that the concrete come up till the stem wall portion. Allow it to dry for 2 hours and take off the form board. Now the garage foundation is ready for you.