200 pound point load applied at the top of the post in any direction, or at any point along the railing. Calculating the space between the railing posts is the first step in the railing installation process. Joists and Decking Boards. The importance of deck post rails is pretty straight forward. They are a set of building codes that have to be adhered to when building deck rails. Homes with attached decks that are 30 inches from the surface must have guardrails of at least 36 inches high will while commercial establishments like apartments, condominiums, or bars need to be at least 46 inches high. For the adjacent 20-foot side, you’ll need three posts in addition to the corner post it shares with the two 12-foot sides. The posts or uprights shall be of a section at least equal in strength to the minimum requirements for railings. Railings are now required, by most counties, for any potential fall greater than 30 inches. 1 (S4S) Southern Yellow Pine (Modulus of Rupture 7,400 p.s.i.)) weight without bowing, you won’t be up to code. You’ve completed your deck’s framing and it’s time to add the railing. SPECIESa SIZE SPACING OF DECK JOISTS WITH NO CANTILEVERb (in.) For example, for a deck with 12 joists, install a deck rail post to every third joist. above the ground. For example, let’s consider a deck with posts 12 feet apart on two sides and 20 feet apart on the other side. Make sure to mount the posts a few inches into account for the ledge board and provide an adequate buffer between the post and the house. Similarly, the International Building Code requires commercial railings to be at least 42 inches tall as well. California requires homeowners to have deck railings that are a minimum of 42” high. You’ll need to install posts on either side of the stringer where the stairs meet the deck, which will affect the spacing of the other posts on that side. Respect Minimum Height Requirements Posts will be much stronger than brackets. Improperly spaced posts can make a railing weak, creating a hazard that can cause serious injury and even death. The minimum height of the railing varies based on the height of the deck. Minimum Railing Distance, One Railing: 31 1/2 Inches Minimum railing distance means the walking space between a handrail on one wall and an adjacent wall that has no handrail. In this article, we’ll review how to space your deck posts, so your deck is both safe and visually appealing. The construction of the railing has to adhere to specific deck railing code requirements. Just keep in mind that each style requires the addition of blocking in the frame to meet code. Guards are required when then deck is 24" (60 cm) above grade. In addition to providing safety, you also want your deck railing to enhance as opposed to detracting from the aesthetics of your deck. You have a couple of options for the corners of externally-mounted posts. Given that a deck railing’s purpose is to prevent people from falling off of it, it’s critical to have proper deck railing post spacing to ensure your deck is safe. All proposed decks require approvals of the Zoning Officer and Code ... railings, baluster spacing, etc. MINIMUM REQUIREMENTS FOR WOOD DECKS - IRC 2009 The following is a list of Code compliance items that are required to be submitted with the construction permit application for plan review processing and approval: 1. For decks with deck rail posts on the outside, you’ll need two posts on each corner. 125 pound uniform load (per linear foot) applied horizontally or vertically to the railing. For a side that is 17 feet 3 inches, for example, you’ll need to use the number of posts that keep the distance between each at 6 feet or less. STAIR WIDTH. According to the International Building Code, deck railing posts should be spaced no further than 6 feet apart. U.S. building code requires support posts for the rail structure to be no further apart than 6 feet on a deck with 4×4’ deck rail posts and no more than 8 feet apart for decks with 6×6’ deck rail posts. [46] “American Standard Safety Code for Floor and Wall Openings, Railings, and Toe Boards,” AS A12 -1932. The Victorian era saw not only the in-troduction of iron railings, but also the first standardized, widely-applied build-ing codes. Sometimes local building codes will have more stringent regulations, so check your local building department for post spacing requirements. Sometimes local building codes will have more stringent regulations, so check your local building department for post spacing requirements. Do not overlook the importance of properly spaced deck post railings in the overall safety of your deck. Although your minimum spacing might be 6 feet, that doesn’t mean you start with the first corner post and move six feet outward from there. It used to be that deck railing posts were notched on one end and connected to the deck with screws. Building Code Deck Railing Post Spacing Requirements, Calculating the Space Between the Railing Posts. Current building code standards require deck railing posts to be attached using bolts. The International Residential Code (IRC) requires a minimum 36-inch-high guardrail for all decks, balconies, or screened enclosures more than 30 inches off the ground. Another option is to mount each post 12 to 16 inches in from the corners with the top rails extending beyond each post to meet at the corner. Measure the distance between the posts at the head and foot of the stairs then evenly space the posts, making sure they are no further than the building code standard of 5.5 feet apart. The general rule is about 1/3 of the post’s overall length should be below grade. If you have deck sides that are not even numbers, you’ll need to spend a bit more time calculating. Begin by measuring the distance between the corner posts of the deck, making sure to measure each side of the deck that will have railings. Posts which are an integral part of the under or over structure are acceptable if they meet the spacing requirements of § 47.232 (relating to construction) and strength requirements of § 47.233 (relating to pipe railings). Balcony railings below 42” are also considered a SWARMP (Safe With a Repair and Maintenance Program) condition in FISP (Façade Inspection & Safety Program) reports. If it doesn’t, even a fall of a couple of feet can cause serious injuries. Why Deck Railing Post Spacing is Important? 2018 IRC Significant Changes to Deck Provisions 12 EVALUATION REPORTS ESR-1137 ITW Red Head EPCON G5 Adhesive Anchoring System The use of railings … KEEP IN MIND. The … U.S. Building Codes for Deck Railing Handrails. What is the Standard Deck Railing Height? To achieve even spacing, the 20-foot side will have a post every 5 feet. It could save you time and money further down the road. Any fewer than that and you are over the maximum spacing required by code. Now when … To achieve even spacing, make sure a uniform number of joists separate each post. Keep in mind that this additional length means that each footer doubling as a rail post will need to go more deeply into the ground than a standard footer to provide adequate support. If a deck's floor surface is more than 30 inches from the ground it must have a railing. Treads must be at least 10 inches deep, measuring from front to back. With interior-mounted posts, you’re limited by the joists that run from the ledger to the rim joist. When you consider that more than 6,000 people suffer serious injuries and even death every year from failed decks and balconies, this is something that should be taken very seriously. If you are attaching posts to the inside of the frame, you’ll need one post on each corner. Deck railing posts are what support your deck rails, which in turn keep people from inadvertently falling off the deck. Remember, for thicker, 6’x6’ posts, you can increase the spacing to 7 feet. Building Code Deck Railing Post Spacing Requirements According to the International Building Code, deck railing posts should be spaced no further than 6 feet apart. As most decks are attached to a home, you’ll need to account for the corners of the deck that attach to the deck ledger. This deck railing height code also applies to commercial decks and balconies such as restaurants, bars, and museums as well as multi-family homes, condos, and any deck on a third-story or higher. Maximum 16'-6 "span for solid stringer (southern pine) Maximum 7'-0 … (B) A wall or guardrail on the open side of all stairways no less than 30 inches in height. This will ensure that there is enough material surrounding each bolt to prevent weaknesses around the holes. Deck railing code is in place for a reason, however. THE MASSACHUSETTS STATE BUILDING CODE 380 780 CMR - Seventh Edition 8/22/08 (Effective 9/1/08) LOAD FACTOR. With the two posts in such close proximity to each other, it’s possible for one set of bolts to block the other. Since the posts will determine the spacing of the balusters and the structural integrity of your railing, correctly installing the posts is critical to ensuring the rest of the railing installation goes smoothly. This decision is an aesthetic one, as each option will provide adequate. Check with the building department for specific depths required. If you’re in California, they require residential posts to be a minimum of 42 inches tall. The process is a bit different for posts that are set on the interior deck. While there are brackets for attaching a railing directly to the building, unless it’s structurally impossible with your deck design, use a post for these corners. The guardrail top height is in most jurisdictions 36" high (or more) in residential applications and 42" high in commercial installations. For the 12-foot sides, you’ll need three posts for each side: one for each corner and one at the halfway point (6 feet) between the corner posts. Requirements were enacted for building standards, such as fire resistance, drainage, and fall protection. Another option is to design your deck by simply extending the footings another 36” so they also serve as the deck railing posts. If there’s a railing, people will lean on it expecting it to hold them. The railing must be strong enough to resist the following loads: 125 pound uniform load (per linear foot) applied horizontally or vertically to the railing Measure the distance from the center of one corner post to the center of the next corner post. To achieve an aesthetically pleasing result, you need to space the posts uniformly. Requirements for Deck Stairs. Lastly, don’t forget to account for the stairs. For stairs with stringers more than 5.5 feet long, you’ll need to install additional posts between the head and foot of the stairs. Local, city, or state codes (For example here is California’s Guardrail Code) Section 410.503 - Protective Railings and Walls. If you choose to install a guardrail on a deck lower than 30", you must still meet code requirements. For the side of the deck that runs perpendicular to the joists, you’ll need to space your posts so they fit in the corner where the joists and the rim joist meet. If a property owner or contractor elects to install railings on any deck lower than 30″, the railings must still meet code. Learn more about the basics of deck railing code-compliance and installation in the Deck Railing Guide and Glossary of Deck Terms and Lingo . Will Water Softener Improve My Drinking Water? 72, 1955 (No. IBC 1607.8.1: Guards shall be designed to resist a linear load of 50 pounds per linear foot a. IBC 1607.8.1.1: … Center a post on each mark and draw a line on either side of the post. Image Credit: Morris Decks. If constructed of structural metal, the top rails to be angle iron of at least 2-inch by 2-inch by 1/4-inch angles or other metal shapes of equivalent bending strength; and the single midrail, where permitted, to be iron or steel of at least 2-inch by 2-inch by 1/4-inch angles or other metal shapes of equivalent strength. It exists to keep people safe. According to any code, there are no restrictions regarding designs, unless the spaces between the decorative elements go over 4”. Stringers. If you decide to use this option, you’ll need to plan in advance as once the footings are in the ground, there is no way to extend their length. Deck Railing Height Code Examples for Different States California. Balusters, the vertical guards that support the handrail, must be installed close enough that the... Support Posts. Deck railing height standards can vary from state to state but typically require a 36″ or 42″ railing. Once you’ve determined the location of each corner post, it’s time to take measurements and determine spacing. If you’re a homeowner, you might wonder which parts of code actually applies to you, and whether you actually have to pay close attention. Install railings on any deck that is 30 inches or more from the surrounding surface and on at least one side... Baluster Spacing. The International Code Council (ICC) is a committee that specifies national building codes. One could even make the argument that a weak deck railing due to poor post spacing is worse than having no deck railing at all. GENERAL REQUIREMENTS Alternative Materials and Methods –R104.11 An alternative material, design or method of construction shall be approved if the proposed design is satisfactory and complies with the intent of the code. [47] “USA Standard Safety Requirements for Floor and Wall Openings, Railings, and Toe Boards,” USAS A12.1-1967. A deck rail post cannot be installed at the same point where the joist attaches to the rim joist as you will not be able to install the necessary bolts. Balusters, or interior rail sections, should be spaced apart so as not to have openings … The building code lists several requirements for footings based on use of the deck (loads) and soil conditions. Dimensions specified are based on the U.S. Department of Agriculture Wood Handbook, No. Stair rails on decks should be between 34 inches and 38 inches high, measured vertically from the nose of the tread to the top of the rail. This gets a little trickier for decks with external railing posts as you’ll have two posts on each corner. Proper spacing of bolts ensures that the deck railing is securely attached to the deck. Deck Railing Code The International Residential Code (IRC), adopted by most US cities and towns, requires 36-in.-high deck railings for decks more than 30 in. Unless your deck dimensions are evenly divisible by six, you’ll end up with odd and rather unappealing deck rail post spacing. This method eliminates the weakest point of railing posts, which is the connection between rail and rim joist. As you determine the location of each post, mark the placement on the deck frame. Insulating A Cathedral Ceiling With Foam Board. For proper spacing, holes for the deck bolts should be placed in the center of the post at least 1.5 to 2 inches from the bottom and the top of the frame. Joists … Contractor Filed a Lien – What Are Our Options? The owner of all dwellings shall provide: (A) A safe handrail for every stairway that is used or intended for use by the occupant as required by 780 CMR: Massachusetts State Building Code. Most state and local codes require railing posts to be 36 inches tall for residential applications. One solution to this problem is to add blocking and brackets that help to reinforce the rim joists. 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