Use our concrete calculator to determine the amount of concrete needed to pour your concrete slab. Fence post hole depth fence design, wood fence post. Gravel calculator calculate how much gravel you need. Post needs to sit plumb and be placed 1814 off the string line. The hole diameter should be at least 6 inches more than the. From now on you can use our gravel calculator see the instructions in how much gravel do i need. Another rule of thumb is that the holes depth should be 15 of the length of the posts and below the frost line.
Results are not to be used without the written certification. If you need to install a fence post or other post type, find out how deep and wide the hole should be in order for it to remain in place and upright. The minimum depth that you should dig your fence post holes for panel sections is 2 feet. Calculation modules foundations pole footing embedded. Fence post depth, size, and anchoring systems can make or break your fence line. Calculators fence resources diy manuals faq catalogs submit a picture. If your post is 6feet tall, you will dig down at least 2 feet. For details on creating a post layout, see how to build a deck.
Explore other calculators related to housing or building, as well as hundreds of other. There are a few great tricks you should know before you start making holes with your post hole digger. Gate posts also should be set in concrete for stability. For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground. This free concrete calculator estimates the amount of concrete necessary for a project, and can. Hole sizes for fence posts and other types of posts. With onetouch product and project information for homeowners and professionals.
Once fence posts holes have been dug and cleaned out, check that each and every hole is in the correct spot. It is time to choose the desired thickness depth of the gravel level. Rendering concreting paving brickwork post erecting. Stringer length, angle, projection and number of risers needed beams and footings calculator. It will help you calculate the number of bags of concrete required for your path, slab or post holes. All too often people dig post holes for deck piers and fence posts that look like an ice cream cone the bottom of the hole being smaller than the top of the hole. We need to make sure that the gravel path will be thick enough to cover the earth beneath it. Next, it will compare the embedment depth to 12 feet and base the allowable lateral passive pressure calculation on the smaller of the two. Concrete is sold premade and usually delivered by the cubic yard or in premixed bags by weight. Local building code will dictate post hole depth and diameter. Inground fence post decay the home depot diy fence front yard fence farm fence the longest yard landscaping along fence pole barn designs horse barn plans cedar posts floor molding post protector fence post protector is. The depth of the hole should be 12 the post height above ground i. To determine the diameter of the hole, measure the diameter or width of the post. Post hole depth for gates the minimum depth for gate posts is 32 inches.
If you have a round hole such as post holes or pillars then use the round hole table. You will need to dig and remove soil until you reach the necessary size and depth specified on your approved plans. Signed and sealed engineering printouts are available for permit by selecting purchase certified copies below after all fields are filled out. Find out how much you will pay in materials to build a. Table 1 relative post hole depth to finished post height. The depth for most heavy posts should be at least two feet. If, after 24 hours, the top of the concrete is still dry, sprinkle the top of the hole with 500 ml of water.
Typically, the diameter is triple the width of the post 12 inches for a 4inchby4inch post. Youll need the post layout marked before you begin. Before you go around digging on your property, give a buzz to the 811 call center in your state to ensure you wont be. The hilti adhesive anchor volume calculator draws on installation data using all types of hilti adhesives and anchorsand with multiple sizes of rebar. This free concrete calculator estimates the amount of concrete necessary for a project, and can account for different shapes and amounts of concrete. The rule of thumb for fence posts is of the fence height post depth. For that reason, we decided that building a post and beam foundation would be the best way to go. Would love to use a post hole digger on my bx23 however i would probably not need it after this project. Determine your beam and footing size based on your joist span and post spacing cost to build a deck. For the width, you need to make the hole three times the. The hole puncher is a great bit of kit it punches a hole 30deep and 12 diameter its fantastic for 53 posts to concrete posts in with self mix or post mix but struggle to get enough material round on anything bigger. Information on hole depth for erecting signs with posts. Pond kit size 1 calculation sizes, maximum gallons of water l.
What is a good rule of thumb in determining the depth of a. One way is to pour concrete in the post hole, set the post on the concrete and backfill with gravel. Holedepth from falltime for dropped rock wolfram alpha. Any lateral force during this curing period may disturb the base and make the post unsteady.
As a general rule of thumb, youll need to place at least the height of the post in the ground. Start the holes for the posts 500mm in diameter and 400mm deep. We created this soil calculator as a tool to help you calculate how much garden soil you need whether it is topsoil, compost, mulch or topdressing. Hole sizes for fence posts and other types of posts diy doctor. Related posts of gate post depth in ground corporate business plan sample. Timber fence calculator posts rails palings pickets. Use it to compare product options, and even modify your calculations based on the specific installation conditions at your job site. Concrete block calculator cement calculator concrete. For example, to fill a box with a width of 3ft and a length of 6ft, to a depth of 1ft, you need to multiply 1ft x 3ft x 6ft 24ft 3 cubic feet of gravel, then multiply that by the density.
How to calculate post hole concrete hansen buildings. The amount of concrete you require will display in cubic metres in the blue box. If you cannot tell visibly, place post in hole and plumb post. Step 2 add about 6 inches of quikrete allpurpose gravel into the bottom of the hole. Calculate to the amount of cement needed for post holes with or without any. Chain link fence installation manual hoover fence co. Concrete roundpost holes calc yd3, ft3, m3, area, premixed bags and portland bags from dimensions, post size and number of columns. The reason for the greater depth is that the posts must be able to handle the weight and the movement of the gate. Concrete rectangle calc yd3, m3, ft3, premixed or portland bags and feet of rebar from width, length and thickness and rebar spacing. Isnt the old rule of thumb of whats above the ground is the hole depth i. Dig a hole using a posthole digger to the length of the post and insert the post.
With pressure treated lumber, you can dig a hole and bury the post itself. Lay out and dig a post hole lowes home improvement. Our gravel calculator makes landscaping projects easier. Use sakretes concrete calculator to measure how much concrete you need. What minimum depth can i get away with these fence posts. Remember, the depth of the post hole should be onehalf of the aboveground post height. If you are new to the forums, you must login or register a free account before you can post. Check local building codes to determine frost line depths. Fence post hole sizes and digging fence post holes diy.
Hole depth in cm all values are required and must be written numerically with decimals. This calculator will determine the flagpole base design requirements per ibc and ubc. 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. Then compact and level the gravel using a post or 2x4. This is closer, but personally id go for a 300mm diameter hole and 600mm depth would be the minimum. First, you need to calculate the volume for the post. Illustration showing a post hole with a diameter that is 3 times the diameter of the post and with a depth that is the height of the post.
How deep to dig fence posts everything you need to know. To dig a good post hole, you need to go down a third and up to half of the height of the post height above ground. Post planting depth does have many variables but this chart is a good start. The diameter of the hole for a 4 x 4 fence post should be a.
If you run into large rocks, this can become a very strenuous process. Explore other calculators related to housing or building, as well as hundreds of other calculators addressing finance, math, fitness, health, and more. I will be using 1 inch by 2inch galvanized wire fencing for the garden. Find out how deep and wide your fence post hole or post hole should be in order to concrete it in and ensure that it remains upright and in place. As stated above, fence post holes should be 3 times the diameter of your post and 1. Despite what some people believe, making a longlasting fence is not always as simple as sinking a post in the ground and moving on to the next post. You can backfill with dirt, or if you like, back fill with concrete. When it comes to adding gravel, it is not enough to know the size of the area that needs to be covered. Click here to download instruction manual for 9hont if youve got tough digging conditions but need a compact unit, the new dirt dawg torque series oneman hydraulic towable post hole digger is for you. If you want to calculate the volume of concrete required for a rectangular slab, use the rectangular slab calculator. Select adjust one end to keep all spacings as entered and adjust the last space to suit. Typically, this means to a depth of 30 inches 24 inches for post, 4 inches for gravel and 2 inches below ground. For example, a 6foot tall fence will need at least 2 feet of post in the ground.
Sakrete fast setting concrete mix makes setting fence posts quick and easy. Keep the height of your fence in mind when digging your post holes. Click the button to calculate the amount of concrete needed. Placed on a flat stone or small concrete base, the post should last as long as the deck. Our gravel calculator handles all this for you given you supply the dimensions. I will try to dig deeper than 2 feet with my manual post hole digger. The bottom 25 percent of the pier hole should be larger than the top. Then enter the thickness of your slab in millimetres. Find more computational sciences widgets in wolframalpha. You need to dig a 12inch wide hole for a 4foot wood post. Pour the hole approximately of the way full with water.
Gates require a hole with a depth of 36 to 40 inches in the ground and with a diameter of at least 12 inches. Enter the approximate depth of the post hole you want to dig in inches. The program will start with a shallow assumed depth and calculate the embedment depth. 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. Built with high quality components, this earth auger is another champion in. Head office 8 bulk terminals drive port of brisbane, qld, 4178 p.
Take your time and invest in a post hole digger, which will work better than a shovel to scoop out dirt. The concrete block calculator estimates how many bags of concrete is necessary to cover the given area. Problems arise for many people when they realize that they need to know how many cubic yards of gravel they need, but their measurements for the area was in feet and the depth was in. The sign maker for the very best in bespoke signs and memorials information on hole depth for erecting signs on posts. The depth of your fence posts will be the single most important issue in building a fence. It will determine how long your fence remains standing. The width of the post hole should be 3 times the width of diameter of the post. The general rule is when setting a fence post into the ground, the height required above the ground should be divided by 3 and this figure is the hole depth required.
380 1089 965 97 90 1603 1380 108 1394 835 1142 1413 1619 444 254 406 630 1492 746 647 1363 774 455 1065 635 955 108 704 865 991 608 898 369 83 861 116 540 787 10 389 172 290 231 110