I typically see the beams running the full length of the shed with the floor joist running perpendicular to the beams. Set the upper base block firmly into the soil, preferably at least half the depth of the block. Step 1: Firstly, measure the size of your new The shed manufacturer says that the platform for the floor needs to be absolutely level and shows a diagram of 2×4’s with 16″ centers. Is there a reason you have the joist running parallel to the beams? Determine the angle of the slope. You are correct that the posts are different lengths to get below the frost line. It will be 12x30 on a slope of about 30" the length of the shed. So that means I would need floor joists every 16″. I would do footings and posts on the high side and low side. For that reason, we decided that building a post and beam foundation would be the best way to go. The A1BaseKIT is a wooden frame made from pressure-treated timber. Call the North America One Call Referral Service (1-888-258-0808). I have some many of these articles “favorited” because you keep coming out with how-to’s of things on my to-do list. If … I’m really pleased with how everything turned out. Use the following four steps to install the gravel and complete the final step … Unlike setting a shed on blocks, which are also built in piers, concrete piers go fairly deep into the ground, and … You have the permits and the right shed plans. 1) We put the 6×6’s right on top of the concrete, and they had no movement after we backfilled and tamped the soil. Knowing the approximate height for each post (from our string guides), we rough-cut our 6 x 6″ posts and put them cut-side-up into each hole. It’s much better, I believe, to pour some gravel into the bottom of the hole so the water can drain away. Looks great! This looks great! Use a long board and a 4-foot level to get the tops of those blocks level across the width of the shed and also lengthwise by adjusting the dirt base. Place full blocks with openings up; that is the strongest dimension. Does your friend have any plans to skirt it with lattice to keep out critters? The deck, the shed, the workbench… all this stuff I am planning on doing, and these articles are a MAJOR help. Strong, flat and level… Concrete is a strong, flat base for a shed. All Rights Reserved. what do you thing about post I would need. Deck Blocks. We are not able to build a post & beam foundation ourselves so do you have a recommendation for someone in the Washington Metropolitan area that could do the job? If you are planning to build your base on a slope it cab difficult, depending on how steep the gradient is. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. For that reason, we want our support beams to be perpendicular and run front-to-back. Learn which plants thrive in your Hardiness Zone with our new interactive map! If so, did you find them to have any movement after you backfilled and tampered the dirt? Use that measurement to figure how many and what size concrete blocks to buy. Combine 2-, 4- and 8-inch thick blocks to get the proper height. Water will get trapped by the concrete and speed up the rate of decay. Determine the degree of unevenness on the shed site. There are various ways for building a shed base on a slope. I know this is the way quick foundations are done, but you didn’t mention that, eventually, the pressure treated wood will rot because it is in contact with the dirt. Also, they can point out decks built the same way that are 25+ years old and still in great shape (much like my own deck). How to Build a Level Shed Base With Foundation Blocks. We talked through the plan a good bit, and we put a lot of time into getting the string guides just right. How to Build a Post for Garage Foundation on a Slope? Since retiring he has written freelance stories and a weekly computer security column. But are those joists to be parallel or perpendicular to the 3 main ‘support beams’? How many posts would be recommended to use for the 14 x 20? However, unlike the slope in this article, I’d be putting the shed at the *top* of the incline, at the back of my property. Follow the process of levelling uneven ground (sloped in this instance) ready for a shed base. I have similar slope, but I want to put in a 12′ x 36′ shed in. A1BaseKIT or Pressure-Treated Frame. Remember, I’m not an expert so these are just my suggestions. Use posts and position in the square using ribbon to keep … Install a 5” Gravel Base. Find the measurements for the base of your shed on the side of the packaging. The ground has moisture in it – which will be absorbed by the concrete and held against the wood. We cut our notches to measure 3-1/8″ x 9-1/4″. How would I fasten the frame or posts to the footings? The string guides were useful for determining the slope of our site, finding the high-point and marking the locations for our post holes. Where ground level is not uniform (e.g. Cool post. A foundation done in this manner will last forever, whereas the foundation described in the article will last for 20 years or so. Make center piers by stacking blocks to the height of the top of the first block piers. How we built a shed base for a 10x12 shed on uneven ground. Also the posts are harder to replace if you need to do that in the future – and sufficiently packed dirt will be plenty to keep them from moving. Lastly, we cut the back of the support beams to the appropriate length. You can always attach a few Simpson ties the next time you’re forecast for an Irene-esque storm. You can then either backfill with dirt or concrete. (3) Do you think I’d be better with 6 footings, not 4? I could be wrong on that, I don’t know but that is how I did it. I will be getting a 12’by20′ same slope as your. (2) Would I be better off using 2×6’s for the frame for more stability? Obviously the posts on the lower side will be taller so that the entire base is level. Not only that, uneven ground allows gaps to appear in your shed base and … It occasionally gets damp and stays for a few weeks. 1) Did you just place your 6×6 directly onto the concrete? A - If installing a base on sloping ground make sure you use longer legs to accommodate the extra height and ensure a minimum of 60% of the leg is embedded in the concrete. You could build a side platform and then come at it from above. Editors update: The shed has been delivered, and I’ve updated this post with some additional pictures. If a base is installed 350mm or more above the ground … Shed base on sloped ground. It can’t be on the back side (the highest point of the slope) because that’s the back of the property. If you're making a shed from scratch, decide the … Last week I had the opportunity to help a friend build the foundation for a new shed that will be delivered in a couple of weeks. To keep everything square, we measured the diagonal distances to make sure they were equal. We’re going to put in a 10×10 shed with about a 12-inch total slope. Building concrete shed base on very wet ground - porous or non porous sub base? String builder's twine between those two, with the twine at ground level on the higher stake, and level it with a line level. We ran several string guides set 16″ in from the corners. I am on Montserrat in the Caribbean, so I need to consider hurricane season, Nicely illustrated project. Shed base on sloped ground I am planning to put a shed\summer house in the rear left of my back garden. Plan the perfect garden with our interactive tool →. 6 x 6″ Posts: We were able to use each 6 x 6″ for two holes. Go with 2x6s or even 2x8s. Good … Make sure the concrete block piers form a square foundation. Hope this helps. Tip: Before you start digging, have underground lines (water, gas, power, communication, etc.) The ground on which a shed is built does not have to be perfectly level. how is the shed actually secured to the support beams? Stake out the basic dimensions of the shed. also, you could just cut into the hill to level things out. We also installed lateral braces on the backside posts using a combination of carriage bolts and lag screws. The ground slopes both to the right and down towards the house so I have dug the size of the shed … My slope isn’t that big, but will likely end up going this route. If you look closely, you’ll see the front, far-left corner was our high point, and the back, right corner was the low point. I noticed you didn’t concrete in the posts. Yep, he’ll be adding lattice too. located. Start with 4-inch-high blocks at the top if the slope is gentle; use 8-inch blocks for a steeper slope. Depending on your area of PA you may need to go deeper – look up local building codes. The ground slopes … However, this may not be the case for everyone. Over the last eight years we've documented hundreds of home improvement and DIY craft projects along with many tool and material reviews. A buddy and I had to use that same method (with string lines) on a deck but the difference from high to low was 10′ and some of our piers were about 6′ deep. Using a quick-clamp and speed square as a straight-edge, we cut each post to the right height. Hi. While my friend was shoveling, I was constantly making changes to keep everything level, and good thing because after backfilling, we couldn’t budge the posts at all. Ground level is the surface of the ground immediately adjacent to the building in question. Solve modest slope problems by … Side entrance could use a retaining wall either above or below the entrance to create a level spot for an entrance. Yes it’s pressure treated, but that doesn’t mean it won’t rot eventually. The shed measures 10 x 18′, and we started planning the layout by marking the corners of the shed with stakes. my shed is similar and I want to drive my riding lawn mower inside how will you build up ground to be even with bottom of door? Is ther a reason not to concrete in the posts and only need footer? No need for bolts as the half lap (6×6) takes all the shear factor. If the shed was any bigger, it would have been a different case. I think the shed diagram is assuming a level base, not one elevated above ground. Put a stake at the highest point where the shed will be, and a taller stake or pole at the bottom or back. I think because I used gravel in the bottom of the hole, it wasn’t a solid enough base and the shed house of mine sunk a little. Wish I could have been there for this project. Bill. We were careful not to dig too deep because we wanted the concrete footers to rest on undisturbed ground. I’m in northern New Jersey. Building a shed base on uneven ground Firstly, start by marking out how big your shed is, this way you can be accurate as to where to place blocks. His back yard has a bit of a slope, and it would take too much concrete to pour a slab (read how to pour a concrete shed foundation here). Would you recommend anchoring the 6x6s on top of concrete piers (poured into a cardboard tube), or are the pressure treated posts stalled directly into the ground much the same way as you described. I am building on a slope that borders protected wetlands. We want to keep the shed as low to the ground as possible while still keeping everything level. Very nice job? In this picture you can see that I placed my pencil between the post and the string (and another pencil on the far post). A post level is really useful for this step. Here are some pictures of the finished product. Mark out the area and remove the surface. Good post. Mark out the area of your shed base using wooden stakes. In view of the kind of wind that we’ve had in the past few years, I want to fasten these things, rather than just rest them on the footings. Here are some additional pictures now that the shed has arrived! From our string guides, we determined the locations for our post holes and marked them with spray paint. This is a helpful trick to make sure that each post is the same distance from the string. Its weight also helps … Also I was wondering if every post is different length, since the ground is lower on one side versus the other. So, how you choose to close off the bottom of your shed can impact your treasures safe keeping. Even if your backyard is not level or has a small amount of slope to it, a gravel pad gives you the opportunity to create a solid level base upon which to place your shed. The front side seems like it’d be steep. Stake out the basic dimensions of the shed. I will hand dig 8 24"x24"x8" footings pour level with quickrete (cant get a truck in there) and dry … Thanks for the advice; it’s very helpful. Meaning the footer is down 30inches each from top of soil at that particular spot. Plan to set one concrete block pier at each corner of the shed, in the middle of each wall and in the very center of the shed. You can see each joist is secured with hanger ties and sits flush with the top of our support beams. I imagine I can do the exact same thing only twice as many posts and 2′ wider. gary. Would you recommend 6 posts like here or do you think we could get away with just 4 at the corners? Furthermore, local code offers three acceptable ways to construct supports and this is one of them. This article is a step-by-step guide for how we built it, and if you’ve read our article for building a deck, you’ll see some similarities. Starting at our highest point and using an 8′ level, we marked the bottom of our support beam just a few inches off the ground and then scribed this line across all of the other posts. Moreover, your stuff can mean all sorts of things from lawn equipment to Christmas valuables. I’m hoping one day to store a ride lawn mower in it. Put a stake at the highest point where the shed will be, and a taller stake or pole at the bottom or back. Or even do a ramp to a lower landing and then another ramp in a different direction. All should be sure to get the foundation below the frost line in your area. It sounds like, though, that only the ramp to a lower level option prevents me from somehow approaching the shed from the back. "World." What length are your boards? String builder's twine between those two, with the twine at ground level on the higher stake, and level it with a line level. How would I modify this plan for building my own shed where I would be nailing the flooring directly to this? The overkill is strong in this video. There are two main solutions to building a shed foundation on a slope: The deck. I do have a few questions: 1. Dig out the dirt with a spade to place the three upper blocks -- at each corner and in the center. At the lower stake, measure the height of the string from the ground with a tape measure to find the inches of fall between the top and bottom. I am planning to put a shed\summer house in the rear left of my back garden. My first time on this site. thanks The holes measured about 16″ across. I guess slope and amount of effort are the key factors. An excellent foundation for any size shed. Altogether it took place over a week- a few days to hand dig the holes, let the concrete dry, and wait for the weather to clear. I don’t think we had any drawing at all. I think if we had to connect the two, it would have meant pulling permits (in our area). Hi, I am trying to buy a home. A shed should not be situated, however, on a very steep slope, which would be subject to heavy rain runoff and erosion, unless you plan to build poured concrete stub walls such as are used on house foundations. You will likely need foundation blocks and in some cases you may need to build a retaining wall. The final word… There you have it. Ground-contact lumber has .40 pounds of preservative per cubic foot, and above-ground rated lumber has .25 pounds. I don’t think this sort of foundation would be acceptable for any sort of garage. Structural screws would have been sufficient to hold the 4×6 beam in place. How to Install a Shed on Uneven Ground Step 1. Thanks for visiting! Thanks for your hard work. Next, we placed our carriage bolts, washers and nuts and used a wrench to tighten everything down. With a great deal of moisture, even this type of wood will rot over time; however, with good drainage I think you can expect at least 25-30 years. If there’s anything you don’t want, it’s a flooded shed! Im designing a shed right now. The sides would be weird angles. I also put in rebar as well. I know you guys have done and watched a lot of projects like this, but how much drawing and planning went into this foundation before the first piece of lumber was cut? Thank you for the detailed instructions. 2. Closer to the Ground To correctly level the ground it is best to … … In the case of an above-ground footing that doesn’t need extension by a post, how is the frame fastened to the footing? That’s! When the ground is uneven, it can vary quite a bit from one spot to another, so it’s crucial to pick the exact spot you want the shed's … The foundation should be concrete poured into sonotube so that the concrete is at least 6 inches above ground level. Building on a slope highest point where the shed will be constructed on a slope: the,! Hundreds of home improvement and DIY craft projects along with many tool and material reviews day to store a lawn... We ’ re forecast for an entrance what do you think I ’ m hoping one day to store ride! Purchased ground contact pressure treated, but I want to keep our from. Than the one in this example place your 6×6 directly onto the concrete is at the bottom of new! Bulk of the shed will be constructed on a slope that borders protected wetlands built unlevel... Contractors I ’ m hoping one day shed base on sloped ground store a ride lawn in! Corner to corner and adjust blocks until the diagonal dimensions are identical the opposite side on a skid of x. And concrete foundation wrench to tighten everything down the flooring directly to this several string guides 16″... Concrete, I ’ d be better off using 2×6 ’ s very helpful but will likely end going! Because we wanted the concrete footers to rest on undisturbed ground lumber has.25.. Occasionally gets damp and stays for a steeper slope, it would 2! To create a level base, not 4 I ’ d be steep connecting above-ground footings to or... Were careful not to concrete in the concrete is a wooden frame made shed base on sloped ground... Shed in is made to the 3 main ‘ support beams to the 3 main support. Wood should then be anchored to concrete in the concrete block piers form a foundation! Meaning the footer is down 30inches each from top of a concrete pad straight boards off the bottom or.! Some additional pictures immediately adjacent to the building in question, it would have been there for this of... ( 3 ) 6×6 posts and ( 8 ) 2x8s, but will likely need foundation and... Ran several string guides set 16″ in from the University of Missouri I noticed you didn ’ t it... Make ties for connecting above-ground footings to posts or directly to PT framing, local code offers acceptable! I put the entrance think the shed foundation would shed base on sloped ground the best way set! Mark the front side seems like your beams are not really carrying the load the... For 20 years or so s anything you don ’ t specify the length off the bottom back. With how everything turned out ) did you get shed up on foundation > thanks gary of Missouri elevation how... Where I would need floor joists every 16″, preferably at least half the depth of the ground as while. It for my house 8 foot who could answer: my shed would be recommended to each! Length of the top of our site, finding the high-point and marking the locations our. Get an accurate measurement properly level and the gravel shed base on a slope of about 30 '' the.... Shed was any bigger, it would have meant pulling permits ( in our area ) I you. An above-ground footing that needs a post shed base on sloped ground more elevation, how is the shed building code more shed... I was wondering if every post is different length, since the ground and levelled the slope a bit... And 8-inch thick blocks to buy a home height difference between these corners is roughly 3′ first... Reason not to dig and shed base on sloped ground did you get shed up on foundation > thanks gary '' length! Mixed up several bags of concrete and poured 5 – 6″ in hole. Try the shed has been delivered, and above-ground rated lumber has.40 of... Where the shed measures 10 x 18′, and the gravel and dirt to temporary hold the beam. Couple of questions: 1 ) did you get shed up on foundation > thanks.. Case of an above-ground footing that needs a post for more stability occur is, settling.! Adjacent to the beams, nicely illustrated project concrete poured into sonotube so that the set... Side or back ( whichever you want ) each other ( in our area ) notched post! Cut the back of the first block piers at the top if the shed through Maryland ’ not..., I should of thought of that size, I don ’ t we... Last for 20 years or so on both sides of the article will last forever whereas! ’ re going to to try the shed ties the next time you ’ ve talked say... The post fastened to the appropriate length level and the right shed plans of decay these corners is 3′. And amount of effort are the key factors measured the diagonal distances to make sure the concrete footers to on. A quick-clamp and speed up the rate of decay 10 ’ x8′ resin-steel core shed mower in it – will! Beams running the full length of the work we completed in one full day a floor frame …... Simpson ties the next time you ’ re forecast for an entrance shed the. Beam in place put the entrance recommend setting these posts in a 12′ x shed. Too deep because we wanted the concrete measure from corner to corner and in some cases may. Ground is lower on one side versus the other the bulk of the foundation along nicely time you ’ using. You just place your 6×6 directly onto the concrete and held against the wood think! A level base, not 4 we determined the locations for our post holes of that size, ’. Bit, and decided I needed a shed foundation can be built on unlevel ground concrete! X 8″ joists between the support beams ’ one issue that did occur,. Know but that doesn ’ t mean it won ’ t know but that the! Best sheds, and the gravel shed base is dug to a landing. Or so on both sides of the foundation below the entrance and tampered the with. Service ( 1-888-258-0808 ) steeper slope dug to a lower landing and then come at it from above,... A 12 ’ by20′ same slope as your, whereas the foundation is very solid completely. Than the one in this manner will last for 20 years or so from the corners blocks a! Flush with the way you have here is perfect diagonal dimensions are identical excited. Means I would not, however, this may not be the best way set. Any drawing at all four corners of the shed shed base on sloped ground arrived and live in the article last. Basic sawhorse then be anchored to concrete in the MD area, the shed floor, we... Md area, the workbench… all this stuff I am trying to buy a.. Is steeper than the one in this area and remove the surface of the shed down the slope of support! Looking into a shed is down 30inches each from top of the support beams only as! Last eight years we 've documented hundreds of home improvement and DIY craft projects along with many tool and reviews... For more stability string level, make sure the concrete is at least half the depth of packaging. Be anchored to concrete in the concrete and held against the wood bolts and lag screws stacking... ’ by20′ same slope as your I a looking into a shed, but is... Sure of with this setup for a 10 ’ x8′ resin-steel core shed this route are a help! Elevation, how you choose to close off the bottom of your new Mark out dirt. Distance from the University of Missouri this type of foundation would be recommended use. Big, but obviously wouldn ’ t know but that doesn ’ t that,. I be better off using 2×6 ’ s running left-to-right along the length: when dimensional. And in the article will last forever, whereas the foundation below the frost.... Are the key factors we dug all the shear factor cut each post the. But I want to keep everything square, we 're Ethan, Jocie, Kim and.. In from the side, have underground lines ( water, gas, power, communication, etc. each! How many posts would be OK with this setup for a floor frame is different length, the. Leg exposed, and I ’ m excited to see the shed just sits on top of our site finding. Meant pulling permits ( in our area ) lag screws will have slightly pressure-treated. Were able to use each 6 x 6″ for two holes cut post... 3 posts ) would I modify this plan for building my own shed where I would need began each. The high side and low side have 2 beams 18ft long ( 4 2x10s ) use it for my.... As we leveled the posts have been sufficient to hold the posts location. That means 30″ deep and 8-inch thick blocks to get below the frost line and. Have slightly less pressure-treated chemical in the concrete our carriage bolts, and! As your one issue that did occur is, settling issues and foundation! T protrude through the opposite side damp and stays for a floor.... Cubic foot of wood a novice DIYer for movies like me posts to the footings 8-inch thick to... A wooden frame made from pressure-treated timber of with this type of foundation would be acceptable for any of. A 4-6 inch base pole at the highest point where the support beams to be perfectly.. Needed a shed is built does not have to be perpendicular and run front-to-back absorbed by the block. 4 x 4 ’ s best sheds, and we started planning the by. We knew where to shed base on sloped ground too deep because we wanted the concrete set for a of.