The concrete slab will automatically be level. Once again it is ensured that the compacted base is exactly level. In case of a slab on grade foundation, a base is prepared using a layer of compressed gravel within the foundation perimeter. It is essential that the foundation walls are also plumb and level. The T-shaped foundation wall connecting the footings is cast in the exact same way as the footing. They are either “T-shaped” or “Slab-on-Grade”. There are two types of garage foundations. After the concrete is poured in the forms, right upto the top, and it sets, all the footing tops will be level with each other. Before the concrete is poured ensure that all the footing forms are exactly the same height. Rebar is installed within the form as reinforcement for the concrete. The footing is made by making a form out of pressure treated lumber. If the footings are structurally sound and level then the entire garage, including the concrete garage floor will be structurally sound and level. The garage rests on the foundation and the foundation rests on the footings. The footing is the most important part of any foundation. Needless to say, sound garage footings and foundations are critical to the structural integrity of the garage. It also keeps out the groundwater and acts as a barrier to water & soil vapor. So you need to start off with the right foundation.įoundation is the structure that transfers the load of the entire building to the ground. Whatever the lay of the land, the objective is to end up with a level concrete garage floor (except for the slight pitch towards the garage door as prescribed by the building code). The chances of your garage getting flooded by rainwater or snowmelt will diminish.Ī gentle slope is also quite pleasing to the eye and gives you ample opportunities to landscape the yard in creative ways. In fact a gentle slope in the right direction may actually be quite useful for natural drainage (with some help though!). Just take a few precautions, and you will be fine. ![]() Building a Garage on a Gentle SlopeĪ gently sloping lot would actually not face any serious challenges to your building a garage on it. I will just go ahead and assume that we are on the same page when it comes to our understanding of a gentle slope and a steep slope. I would like to think that a height difference of 6” or less ( A slope of 2.5% or less) should be considered as a gentle slope.Īnything more, and we are better off using the techniques of building a garage on a steep slope. At least some of them! Intuitively, we know that can’t be the case. Going by technicalities, a height difference of less than 3’ would make it a gentle slope. If one end of the garage is going to be 3’ or higher, then we are over the 15% limit and technically in the steep slope zone. Let us put this definition in the perspective of a 20’X20’ garage. They are often undesirable areas for development due to the difficulty of building on steep grades.” “Steep slopes are legally defined as hillsides having a 15 foot, or greater, vertical rise over 100 feet of horizontal run, or 15% slope. ![]() Nashua Regional Planning Commission in its FACT SHEET: 12 defines Each person may have his own idea of differentiating between a gentle slope and steep slope. How steep is steep does not have any definitive answer. While the topic of the post is about building a garage on a steep slope, I believe I should take a holistic approach and talk about building a garage on a gentle slope, as well.īuilding a Garage on Steep Slope - OctoGentle Slope vs Steep SlopeĪ sloping lot can mean different things to different people. This post will, however, help you ask the right questions and understand the solutions provided. You must ultimately use the services of a qualified architect. Let me explain some of the best ways of building a garage on a steep slope (and gentler ones too!)ĭisclaimer: The purpose of this blog post is purely to inform and give general advice. ![]() Is your house on a sloping lot and now you are planning to add a detached garage? But can a garage be built on a slope? Yes! It can be done with ingenuity, knowhow and some extra cash. The website is also an affiliate of a few other brands. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to.
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