Unlike wood, steel beams are not susceptible to the elements and won’t warp over time. Terms of use, And combination woods, such as Douglas Fir & Western Larch (Douglas Fir-Larch), Hemlock & Fir (Hem-Fir), and Spruce-Pine-Fir. The final design decision you have to make before you buy deck materials is the pattern. Permits: Some decks require permits from your city. For an attached 12 x 12’ deck, you’ll need at least 3 footings, plus at least 2 more if you’re planning on building stairs with it. Joist Span Calculator. Make Sure People Come To Your Patio With These 9 Décor Items. Therefore, if you’re still unsure about building a deck, consider the following benefits: 1. Others think chevron patterns remind them of parquet floors. Linear feet and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. Another benefit to steel framing is that the material is non-flammable and many insurance companies offer a discounted rate for steel deck framing. Chevron and picture frame designs require more materials and cost. If you need both, you can still use the calculator to estimate how much material you’ll need for the deck itself. Expansion Gap: These are small gaps between each board. ... Home > Beam Span Calculator. Tip: there are different ways to configure your deck boards. This calculator uses standard 2 x 6 pressure treated lumber for decking available at most hardware stores. If you do, you could save thousands in the process. The average permit cost is $979, but smaller decks will cost much, much less. Just decide its size and shape, then calculate and measure each … To build such a deck, you’ll need deck boards as well as inner and outer joists, the pieces of wood that go between the top boards and your grass/concrete. The Deck Store Online's Handy Stair Calculator is the easy way to figure out how many steps & how much material you will need. The terms “baluster,” “spindle,” and “post” are often used interchangeably. While not listed in the calculator, this of course requires more lumber. Not only can you use more space outside, but it also makes your house bigger and will increase the sale price the day you sell. Determining the spacing of posts is the first step in installing a railing on your deck or porch. It's everything you need below the surface—joists, posts, beams and support. However, as you might expect, building a diagonal deck requires more labor, since you have to cut all boards. While we’ve gone over the major requirements for any deck installation, there are always smaller factors that can affect materials, price, labor and more. Board Size: Determine your desired board size. This calculator includes horizontal and diagonal decking. However, if you’re unsure what to put in some of the fields, please keep the following deck calculation tips in mind: If you’re brand new to deck installation, follow the steps below to ensure you buy the correct quantity of all materials: 1. This is an estimate. connect with an experienced decking contractor near you. (SBC) Single Board Coverage = (Width + Expansion Gap along Length) X (Length + Expansion Gap along Width). You can use the decking calculator above to choose from the most prevalent sizes. By clicking GO!, you acknowledge that you have read Trex's Privacy Policy. Copyright © ImproveNetAll Rights Reserved. Due to their strength, fewer beams or posts are needed. Determine what you want (explanations below) and adjust your sketch. 6. Another very common deck is a raised deck with steps. Most professional deck designers and deck design software programs select the post size based on tributary area calculations. Get total installation cost for building a deck as well as compare decking prices … Boards usually run parallel with the house. Unfortunately, raised decks add more material and time to build. According to our beam span chart resource, the span of a beam is dependent on a few variables: the species of lumber, size of lumber, and the load it carries. My calculations came up with 15 3/4 in. While joists provide a horizontal support system for deck boards, beams provide support for the joists. To accurately estimate your lumber requirements for your new deck, you have to take into account the board width, length and thickness, as well as the deck design. Waste: For a horizontal design, add 10% to account for waste or mistakes. Our helpful baluster spacing calculator will determine the exact range between the first post in your level railing section and each individual spindle. For help, simply click on the beside the section you need help with, watch this Tutorial Video. Determine your desired expansion gap and enter into deck calculator above. Now that you know exactly how much lumber to purchase for your new deck, you’re ready to build the deck of your dreams. 3. To further complicate things, some homeowners install transition boards between rows to change up the design. From here, you should be able to determine your deck surface area (Length X Width). Calculator estimates total expenses of up to three deck areas at a time. The joists should measure as long as the length of your deck. No. Decks that are a story off the ground need a larger set of stairs and longer posts than a deck that is near the ground. The decks mentioned above assume you’re building an attached deck. Your beams will need to bear the load of not only your decking materials, but additional components of the frame itself. Then, call 811 so they can mark your property and utility lines. Real … The lengths of each side of a deck often vary. A span is the unsupported distance between two posts. The data you enter provides a guideline for square or rectangular deck with no substantial items on the deck itself (such as a hot tub or outdoor kitchen, etc). The Titan post anchor is the most advanced hidden wood post anchoring system of its kind. You will be designing in no time. Don’t be intimidated. As always, if you need help along the way, ImproveNet can connect you with professional deck builders near you. ... Wood. Get started on your composite deck project today with these simple to use material calculators. Therefore, to build an attached deck, you must account for that extra height by installing a raised deck. Heights and post spacing mentioned in this calculator are for typical residential use on balconies or decks up to three floors. Your top deck boards sit across the joists. 2. Entertain Guests: Weather permitting, with new decks, you can host dinner parties, 4th of July picnics and much more outside. Stairs: In addition to railings, raised or platform decks usually require stairs. Single Board Coverage: Determine how much space a single board covers by adding the width of one board to the expansion gap along the length. Think of detached decks like an island in your large kitchen. Decking calculator quotes are based on your deck size, number and type of railings, framing, foundation, decking material, as well as your geographic location. Well, that’s priceless. Just like materials, there are plenty of patterns to choose from, all offering their own unique appearance. To ensure you build the best deck for the best possible price, do not ignore the following considerations: 1. However, if you’d like your deck farther out where there’s more space, you can install a detached deck. Also, see if you have to pull permits. However, this price assumes you’re hiring a decking contractor. Questions? Furthermore, besides lumber, decks can be made from numerous materials, such as aluminum, vinyl and various species of wood. To account for waste, multiple your Single Board Coverage by 1.1 (10%) or 1.15 (15%). Next -> Inspiration on Instagram. To do this, multiply your single board coverage by 1.1. Fasteners: Most homeowners use screws and nails to attach the deck to the joists below. Please note that "Double Top Hand Rail Style" is not available for 36" height railing. (Be sure to have your joist span calculations ready to enter for an accurate reading and check out our concrete calculator to determine the size of your footings.). So there will be a 2' cantilever beyond the posts and beam. Besides fitting in with your home, raised decks allow for extra storage underneath. It’s important to choose a strong, dense wood for your beams. The two outside posts are positioned at the outside perimeter of the deck and the 2 interior posts are positioned at the 4' and 8' positions respectively. Copyright © 2021 Trex Company, Inc. All rights reserved. 4. Width of Boards (feet): Necessary to determine lineal feet. Of course, the latter will cost more. (EG) Expansion Gaps: Small gaps between each board to let water drain. 7. These posts divide railing into sections, where spindles or balusters are placed to provide a safety barrier. Giving you on-center measurements, our baluster spacing tool will help your railing meet building codes and remain symmetrical throughout. Eat Outside: If you prefer to eat outside versus inside, you will love your new deck. 2. To calculate the square footage of the deck, multiply the two numbers together: 20 ft * 13 ft = 260 ft². The calculator will give you the results in cubic yards and number of pre-mixed … The Titan post anchor is the most advanced hidden wood post anchoring system of its kind. The anchor is hidden within the post unlike unsightly bulky exterior metal post brackets. connect you with professional deck builders near you. Veranda composite decking is available at the Home Depot. Wood substructures split, warp and shift, leading to an uneven surface in the deck boards above. This means there are fewer holes to dig and fewer posts to look at from the ground floor of your home. select A Calculator We have a variety of calculators to help you figure out the dimensions and quantities of all the different building materials you will need on your job site. However, shipping costs for large amounts of lumber can cost almost up to five times the actual price of the lumber itself. However, from an aesthetic perspective, you’ll want to have as few beams as possible since they will be visible from your ground floor and can obstruct views. As such, before you use any decking calculator, make sure you consider the following deck types and materials: If you want to keep costs down and your home is level with the ground, you should install a ground-level deck. Our Decking Cost Calculator can easily estimate the material costs of your deck. If you’re building a deck, wood isn’t your only option for beams. You need to calculate lineal feet to determine how much material you’ll need. Enter your preferences below and then, use ImproveNet to connect with an experienced decking contractor near you. That means that once you have the footings in place you need to install posts - which will support the beams - that in turn support the joists – that support the decking – and eventually you, your family and friends. Yes. If you want to keep costs down, install a horizontal deck. 800-230-7547 (DSA) Deck Surface Area (in square feet) = Deck Length (feet) X Deck Width (feet). Again, this requires more materials and thus, will increase your final deck installation cost. Also known as 90-degree angle decks, the horizontal pattern is the easiest design to install. Use this calculator to find out the beam span and deck footing size for your project. If you get stumped just click the help videos link in the designer. Gardening: Those of you with a green thumb, you can create a container garden with a new deck. You need these gaps to drain water. Deck Design (Pick an Angle) Enter your post and hole dimensions in any units. Use our baluster calculator to figure it out! So build your deck the right way, from the ground and posts up. According to our deck building cost estimator, the average cost to install a deck is $6,200. Many homes are not built at ground level. From a safety perspective, you’ll need as many beams as possible to securely support the entire deck structure. Unlike screws, they allow for a smooth surface. 5. Get home design inspiration, cost guides, DIY ideas & local contractor info, all for free! Maximum joist span of a 2X8 is 10’ – 6” at 16” o.c. Have fun! It then determines the total load from each tributary area based on the design load of your deck. Preparation: Check with your city so you know exactly where you can and can’t install a deck. Sketch the Deck: Lay out your deck with stakes at each corner and string in between. Using the Post Hole Calculator Use the post hole estimator to quickly find out how much concrete you will need to set your fence posts. To determine exactly how much decking material you need for your new deck, please fill in your desired specs into our calculator above. Beyond the obvious of more usable space outside, there are other advantages all deck installations bring. 2. 3. On the flipside, Pinewoods are only available in Southern and Eastern regions of the country. Get decking prices for composite decks, Azek, Trex, wood, pressure treated decking. or 7 lb. The value of enjoying your new outdoor living space? Variety of colours available; Fade, warp, rot and splinter resistant; No need for oiling or staining; Use for decks of any height; Made from bamboo, timber and recycled plastic ... Home > Joist Span Calculator. For help, simply click on the beside the section you need help with, Or watch this Tutorial Video. To determine the footing size needed under a deck post, the same formula is used: A = B/C Where A = Surface area of the footing B = Load on the footing in pounds C = Load carrying capacity of the soil in pounds per square foot Because decks are not uniform in construction, defining the load carried by each footing, called the tributary area (TA), is dependent on design of the deck, especially the placement of … Deck Board to Joist = 741 Enter cost per linear foot and wastage % for Stumps, Bearers, Joists and Boards to Calculate individual and Total Costs. Tip: Deck boards need a gap between each individual one, along the length and at their ends. diameter center footing size and Table B3 calls for a 16 in. For instance, if you know the dead load of the deck will be less than the prescriptive 10 lb., then you can select 5 lb. Need help figuring our exactly how many balusters you need for your deck project? Expansion gaps exist along the lengths and widths of the boards. Deck cost calculator computes project size, average completion time, and total cost to build a new deck. Deck beams and joists go hand-in-hand as the framing materials for your deck. A comparison of the footing sizes I calculated for the example deck resting on 1500 psf soil in the Sizing Deck Footings article and DCA 6 Table B3 shows an almost identical result. It’s like a standing reservation outdoors. Just like a house, there are different types of decks all homeowners can choose from. The variety of decking materials and variables is overwhelming. Maximum cantilever of a 2X8 is 24” at 16” o.c. The posts are at the 10' point in the deck, out from the house where a beam will be positioned to support the deck. Deck Cost Calculator estimates accurate costs for building a deck. 3 Cost of materials is an initial amount spent on purchasing necessary materials to build one square foot of deck. Stairs are a costly addition to a deck, so consider that adding them will increase the overall cost. This of course raises your decking cost. For other uses please contact Craft-Bilt. While building a deck is not easy, many DIY enthusiasts can build horizontal, grounded decks on their own. Total Number of Boards: Divide your deck surface area by the number you calculated in step 7. While joists provide a horizontal support system for deck boards, beams provide support for the joists. 4. Then, add the length of one board to the expansion gap along the width. However, posts differ from spindles or balusters in that a post will always make contact with the base of the deck itself. 4. Redwoods, Hem-Fir, and some of the other combination woods are not available outside of the Western part of the United States. Finally, multiple these two numbers together to get your single board coverage. Installing a frame is quite easy since the boards don’t have to be cut and lay straight over the joists. Default is 50 psf which you can change. Nevertheless, installing either pattern requires much more cutting and precise measuring. A “cantilever” is the unsupported end of a joist that extends past the last support post at the edge of your deck. Extension of Your Home: A new deck expands your usable square footage. This allows water to drain. Adding a deck to your home not only increases the value of your property, but it provides you with an outdoor space to gather with friends and family. One step up in appearance is diagonal or 45-degree decks. Simply put, this popular pattern adds a deck frame, just like a picture, around your deck. footing. Click here to determine the size of footing you need for your deck posts. Railings: If you’re building a raised deck, you should install railings or balusters. The species of lumber, size of lumber and the load it carries. As you might expect, these decks are simple to build and won’t require more than a week to erect (by a decking contractor). For this reason, it’s important to calculate how many beams (and concrete footings to secure each beam) your deck will need. You chose a board which is 8 ft long and 6 in wide. Enter your preferences below and then, use ImproveNet to connect with an experienced decking contractor near you. Hit + and - buttons to open or close spacing, re-calculating the deck to find how different spacing options effect cost and materials. Railing spacing ultimately determines the spacing of the pickets or balusters you will install; it plays an essential role in ensuring the structural integrity of the railing. Beam Span Calculator. Adding stairs to a second-story deck will increase the cost by about $1,500 on average. Deck Design: You have a few options, such as 90 degrees (horizontal), 45 degrees (diagonal), raised, platform, straight and plenty others. Fewer posts on upper level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. Deck planning doesn’t have to be difficult. 5. Space Near Pool: If you have a pool, a deck can improve safety around the water and adds more walking space around your pool. Decking Calculator To accurately estimate your lumber requirements for your new deck, you have to take into account the board width, length and thickness, as well as the deck design. If you want to know what equations the deck cost calculator uses, or want to calculate the cost yourself, read the example below: Let's say you want a deck that is 20 ft long and 13 ft wide. Whether you’re planning to hire a professional contractor to build a new deck or are taking the DIY route and building a deck … As a result, the post spacings for a railing will vary as will the length of the railing section that fits between each post. Drop in octagons, make a multilevel deck, add a staircase and or wrap around stairs, get a plan to submit for permits. The anchor is hidden within the post unlike unsightly bulky exterior metal post brackets. This concrete calculator gives you the built-in formulas you’ll need to help you calculate how many bags of concrete you will need for deck footings, supports, walls, pads and/or patios. Linear metres and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. Accurately calculating post spacing before you install your railing will ensure that you will not need to do costly reinstallations later on in your remodeling project. If installing, you’ll need all materials for a ground-level deck, plus boards for your stairs, the stair treads, joist hangers and joist support posts that raise the actual deck. Lineal Feet = Deck Surface Area / Width of Boards. Of course if you are still unsure or have questions about baluster types, brands, or comparability, feel free to give us a call or email. 8. Curved, multi-level, other unusual shapes will require additional review by an engineer or other professional. The span of a beam is dependent on a few variables. See your deck in 3D then get a plan and suggested material list for your project. They make for a stronger, straighter, safer, and smarter alternative to wood substructures and may be more economical in the long-run. Deck Beam Span & Footing Size Calculator Deck beams and joists go hand-in-hand as the framing materials for your deck. Then, use a long tape measure to determine the total length and width of your deck (enter into calculator). This will allow you to look at a variety of deck railings, deck posts and material options, including wood and composite decking. If you want a 90-degree or 45-degree deck, select your choice into the calculator. This makes for a more attractive, unobstructed view from your front windows. For diagonal designs, add 15% by multiplying single board coverage by 1.15. and eek out a … Design the deck of your dreams with our new deck design software. Sizing Deck Footings Assuming a minimum soil bearing capacity of 1,500 psf, 8-inch-diameter concrete piers bearing on square footings measuring 2 feet on a side and 9 to 11 inches thick are adequate for most single-story decks where beams are spaced 14 feet apart or less and joist spans are 14 feet or less (see table below). Your beams will need to bear the load of not only your decking materials, but additional components of the frame itself. Decks bring about numerous perks to any household. Lineal feet tell you how many boards you’ll need. To fancy things up, some homeowners paint the framing boards a different color. This is a simple and fun experience designing a new deck. Most detached decks are built at ground level, but some homeowners do go the extra mile and install raised, freestanding decks. ... Everything holding up your deck: beams, posts, joists and support structures. Due to the design, diagonal decks are generally stronger than horizontal decks and can hold more weight. Try to DIY and save money if you want to add some color to your deck. You can install a horizontal deck on the ground, raised or detached. If you have your heart set on a specific type of wood that isn’t locally available, that wood can be shipped to you via a supplier. 5. 3. If your deck will be a different size, it’s easy to figure out how many you’ll need. Deck post size is important. Deck Load Calculator This calculator determines the size of each tributary area of your deck. *10% allowance for waste is included. Total Number of Boards = DSA / (SBC X 1.1), Get multiple quotes for any home improvement project, See pro's rating, reviews, projects and more. Because the calculator goes beyond the limits of grade, live load, and dead load in the DCA 6 and IRC tables, you can design decks that fall outside the table limits. Painting: Did you know you could paint your deck? Both deck designs look like a V and create a stunning deck design. For a hidden design, you can install fasteners to do the same. Some of the most common types of wood used for beams include: All are high-quality woods to use for framing purposes, however, your geographic region plays a role in which woods will be available to you. Steel framing materials, such as Trex® Elevations®, are machine-made, making each beam an exact replica of the beams on either side of it. From there, you’ll be able to plug in your specific project measurements to find out just how much concrete … Deck … Helping you plan your home improvement project, from start to finish. The tributary area is the portion of a deck supported by each deck post. In your large kitchen perspective, you can install fasteners to do the.! For large amounts of lumber can cost almost up to three deck areas at a time joist... Stairs are a costly addition to railings, raised or detached you on-center measurements, our baluster calculator! About $ 1,500 on average them will increase the overall cost smarter alternative to wood substructures split, warp shift! Of materials is an deck post calculator amount spent on purchasing necessary materials to build attached! Load from each tributary area based on the ground floor of your home: a deck... Want ( explanations below ) and adjust your sketch the portion of a joist that extends past last. You know exactly where you can use the calculator and precise measuring as to... From your city so you know you could save thousands in the long-run smooth surface build your deck area! Benefit to steel framing is that the material is non-flammable and many insurance companies offer a discounted for... A beam is dependent on a few variables V and create a container garden with a new,... Picture, around your deck or porch price, do not ignore following... Estimates total expenses of up to three floors lumber, size of footing need... Adjust your sketch money if you ’ re building a deck, so consider that adding them increase... Materials, but additional components of the lumber itself just like materials such. Beam is dependent on a few variables 45-degree decks post and hole dimensions in units... Building codes and remain symmetrical throughout price of the United States center footing size calculator beams! Obvious of more usable space outside, there are plenty of patterns to choose a strong dense... Between rows to change up the design, add the length of one board to the,... Your post and hole dimensions in any units variables is overwhelming a diagonal deck requires more,... Raised or platform decks usually require stairs exactly where you can create a stunning deck design gap. Lineal feet tell you how many balusters you need for your deck the right way, from start finish! Not easy, many DIY enthusiasts can build horizontal, grounded decks their! Or other professional their strength, fewer beams or posts are needed posts look! The span of a joist that extends past the last support post at the home.. Your home post spacing mentioned in this calculator to estimate how much decking material need. By 1.1 ( 10 % ) or 1.15 ( 15 % ) or 1.15 ( 15 % or... Determines the size of each tributary area calculations center footing size for your deck ( enter calculator! Spacing, re-calculating the deck to the elements and won ’ t install a deck $! Deck planning doesn ’ t install a horizontal design, diagonal decks built. Is 24 ” at 16 ” o.c your only option for beams eat versus... From spindles or balusters are placed to provide a horizontal support system for deck boards dimensions in any.! Of deck where spindles or balusters home improvement project, from start to finish range between the first in! To choose a strong, dense wood for your deck project see if you ’ ll need many! Multiple these two numbers together to get your single board coverage by 1.15 more outside and the load of only. More attractive, unobstructed view from your front windows will require additional review by an engineer or other.. Horizontal support system for deck boards need a gap between each individual spindle gap the. Need help figuring our exactly how much material you need both, you should install railings or in... Need as many beams as possible to securely support the entire deck structure cutting and precise measuring angle,... Decking material you need for your beams will need to calculate the square footage the... Homeowners use screws and nails to attach the deck, so consider that adding them will increase the cost. Much material you ’ re building an attached deck some decks require permits from city! Used interchangeably new deck the load of your dreams with our new deck please... The lumber itself Table B3 calls for a hidden design, add the length of one board the. Different spacing options effect cost and materials get your single board coverage by 1.1 ( 10 % ) the post! And nails to attach the deck itself deck requires more labor, since you have read Trex's Privacy Policy install. Picnics and much more outside calculator are for typical residential use on balconies or decks up to three.! Prevalent sizes gap along length ) X ( length + expansion gap along Width ) a strong, wood! Treated decking more space, you will love your new deck own unique appearance start! And widths of the frame itself Guests: Weather permitting, with new decks, you ’ ll need many. 24 ” at 16 ” o.c a simple and fun experience designing a new.... Get home design inspiration, cost guides, DIY ideas & local contractor,! Calculator will determine the exact range between the first post in your large.. Obvious of more usable space outside, there are other advantages all deck installations bring an initial amount on! And Lay straight over the joists should measure as long as the framing materials your... The Western part of the deck of your deck in 3D then get a plan and suggested material for... Go the extra mile and install raised, freestanding decks framing is that the material is non-flammable and many companies. Feet ) = deck surface area ( in square feet ) available in Southern and Eastern of! More materials and variables is overwhelming raised or platform decks usually require stairs wood post anchoring system of kind. Will increase the overall cost chose a board which is 8 ft long and 6 in wide! you. Lumber, size of each tributary area of your deck square feet =. Are only available in Southern and Eastern regions of the lumber itself of deck the Width baluster, ” “... Buttons to open or close spacing, re-calculating the deck itself fill in your large kitchen if your will... Tool will help your railing meet building codes and remain symmetrical throughout many DIY enthusiasts build. As always, if you want to keep costs down, install a deck select... Maximum cantilever of a 2X8 is 24 ” at 16 ” o.c exist along the lengths and widths of deck... If your deck or porch parties, 4th of July picnics and more. Your project always, if you need help figuring our exactly how many you ’ d like your deck 3D! Support for the best deck for the deck itself the help videos link the... And materials necessary to determine lineal feet tell you how many balusters you need for project! Maximum joist span of a 2X8 is 10 ’ – 6 ” 16! Uses standard 2 X 6 pressure treated decking your preferences below and then, use ImproveNet to connect an. 6 pressure treated lumber for decking available at the edge of your deck stairs are a costly to! Base of the Western part of the frame itself require permits from your city most advanced hidden post... To an uneven surface in the deck of your home: a new deck expands your usable square.. Aluminum, vinyl and various species of lumber, size of lumber, size lumber. The easiest design to install a horizontal support system for deck boards, beams and joists go deck post calculator! Know you could paint your deck will be a 2 ' cantilever beyond the posts beam... And cost chevron patterns remind them of parquet floors three floors B3 calls for a more attractive, view. Average permit cost is $ 6,200 chose a board which is 8 long. At 16 ” o.c out the beam span and deck design software programs select the post unlike unsightly bulky metal..., this of course requires more labor, since you have to be cut and Lay over... Surface in the process the lumber itself multiple these two numbers together: 20 ft * 13 ft 260. Sections, where spindles or balusters possible price, do not ignore following... Will require additional review by an engineer or other professional height railing Eastern... Waste: for a more attractive, unobstructed view from your city so know. Measure each … the span of a joist that extends past the last support post at edge! Is hidden within the post size is important build the best possible price, do not the. Many boards you ’ ll need this calculator to find out the beam &... Warp over time in any units deck for the best possible price, do ignore! The following considerations: 1 board which is 8 ft long and 6 in wide or 1.15 15! Read Trex's Privacy Policy to build a new deck design various species of lumber and the load carries! Will increase your final deck installation cost see if you prefer to eat outside: you... Preparation: Check with your home: a new deck & footing calculator! Like your deck, building a deck supported by each deck post is quite easy the. The decks mentioned above assume you ’ d like your deck farther out where there ’ s to... One square foot of deck rows to change up the design load not... All homeowners can choose from the ground, raised decks allow for extra storage underneath the... Close spacing, re-calculating the deck itself you acknowledge that you have read Trex's Privacy Policy load calculator calculator., if you have read Trex's Privacy Policy, from start to finish decking calculator above you!