--- title: "A Matter of Length: When 5-Row Bleachers Require An Aisle to Meet Code" description: Learn when 5-row bleachers require an aisle to meet safety codes and ensure compliance with National Building Code regulations for safe and efficient seating solutions. image: https://blog.sportsystemscanada.com/hubfs/5-row-bleacher-with-aisle.jpg --- [![image-(29)](https://blog.sportsystemscanada.com/hubfs/image-(29).png "image-(29)")](https://www.sportsystemscanada.com/) - [Bleachers](https://www.sportsystemscanada.com/bleachers/) - [Players Benches](https://www.sportsystemscanada.com/bleachers/players-benches/) - [Outdoor Bleachers](https://www.sportsystemscanada.com/bleachers/outdoor-bleachers/) - [Telescopic Bleachers](https://www.sportsystemscanada.com/bleachers/telescopic-bleachers/) - [Accessible Bleachers](https://www.sportsystemscanada.com/bleachers/accessible-bleachers/) - [Grandstand Bleachers](https://www.sportsystemscanada.com/bleachers/grandstand-bleachers/) - [Tip & Roll Bleachers](https://www.sportsystemscanada.com/bleachers/tip-roll-bleachers/) - [Arena Bleachers](https://www.sportsystemscanada.com/bleachers/arena-bleachers/) - [Press Boxes](https://www.sportsystemscanada.com/press-boxes/) - [Transportable Bleachers](https://www.sportsystemscanada.com/bleachers/transportable-bleachers/) - [Basketball](https://www.sportsystemscanada.com/basketball/) - [Outdoor Basketball Systems](https://www.sportsystemscanada.com/basketball/outdoor-basketball-systems/) - [Indoor Basketball Systems](https://www.sportsystemscanada.com/basketball/indoor-basketball-systems/) - [Basketball Backboards](https://www.sportsystemscanada.com/basketball/basketball-backboards/) - [Basketball Hoops](https://www.sportsystemscanada.com/basketball/basketball-hoops/) - [Basketball Accessories](https://www.sportsystemscanada.com/basketball/basketball-accessories/) - [Padding](https://www.sportsystemscanada.com/padding/) - [Padded Rooms](https://www.sportsystemscanada.com/padding/padded-rooms/) - [Custom Wall Padding](https://www.sportsystemscanada.com/padding/custom-wall-padding/) - [Folding Gym Mats](https://www.sportsystemscanada.com/padding/folding-gym-mats/) - [Netting](https://www.sportsystemscanada.com/netting/) - [Baseball & Softball Netting](https://www.sportsystemscanada.com/netting/baseball-softball-netting/) - [Custom Sports Netting](https://www.sportsystemscanada.com/netting/custom-sports-netting/) - [Complete Netting Kits](https://www.sportsystemscanada.com/netting/complete-netting-kits/) - [Golf Course Netting](https://www.sportsystemscanada.com/netting/golf-course-netting/) - [Hockey Netting](https://www.sportsystemscanada.com/netting/hockey-netting/) - Other Products - [Court Sports](https://www.sportsystemscanada.com/court-sports/) - [Gym Divider Curtains](https://www.sportsystemscanada.com/gym-divider-curtains/) - [Gym Floor Covers](https://www.sportsystemscanada.com/gym-floor-covers-2/gym-floor-cover/) - [Hockey](https://www.sportsystemscanada.com/netting/hockey-netting/) - [Soccer Equipment](https://www.sportsystemscanada.com/soccer-equipment/) - [Custom Fabrication](https://www.sportsystemscanada.com/custom-fabrication/) # The Best Seats In The House ## [A Matter of Length: When 5-Row Bleachers Require An Aisle to Meet Code](https://blog.sportsystemscanada.com/blog/a-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code) Posted by [Ryan Wilby](https://blog.sportsystemscanada.com/blog/author/ryan-wilby) Sep 15, 2025 8:19:18 AM ![5-row-bleacher-with-aisle](https://blog.sportsystemscanada.com/hs-fs/hubfs/5-row-bleacher-with-aisle.jpg?width=1000&height=904&name=5-row-bleacher-with-aisle.jpg) While most companies and industries today seem to be moving away from phone conversations, here at Sport Systems, we continue to embrace them. While it is something that we consider to be a vital part of our customer experience, it’s also in light of the fact that many of the products we sell are unique and nuanced in design.  One such product category that requires a conversation just about every time we sell them is our bleacher and seating department. With unique capacity and design needs, we pride ourselves on customizing solutions fit to each individual project where required. In addition to mapping out seating requirements, a challenge many buyers are now facing is navigating seemingly complex national or regional safety and building codes. The truth is that most of our five-row bleacher models are already compliant “out of the box”, that is until the length of the bleacher seating gets past a certain point. One of the more consistent questions our sales team fields with regards to these popular models is at what point do our five row models require that an aisle be incorporated into the design. The short answer is that anything that is 30’ and under in total length does not require an aisleway while anything over will typically require an aisle. ![seating-country-day-school-bleacher](https://blog.sportsystemscanada.com/hs-fs/hubfs/seating-country-day-school-bleacher.jpg?width=500&height=375&name=seating-country-day-school-bleacher.jpg) According to Dan Horbal, our Senior Technical Advisor, key National Building Code (NBC) concepts for bleacher egress are as follows: **Egress Must Be Direct and Unobstructed** NBC requires that occupants have direct access to an aisle or exit without obstruction. If side guardrails prevent exiting at the ends of rows, then the only remaining egress path is down the front of the bleacher tiers. This is acceptable if: • The height of each tier is within safe stepping limits.     • The walking surface (seat boards) is continuous and wide enough.     • There are no obstructions like vertical rails or gaps that would impede descent. -   This configuration is often referred to as "tiered descent" or "stepped egress", and is permitted under NBC for small bleacher assemblies. **NBC Allows Egress Over Seating in Certain Cases** NBC does not prohibit egress over seating rows if the bleacher is low-rise and open-air, and if the descent path is uniform and predictable (i.e., each row is the same height and depth) and is not more than 5 tiers (which limits total height and fall risk). **Why No Aisle Is Still Acceptable with Side (and Rear) Guardrails** Even though side guardrails block end-of-row exits, NBC permits aisle-free designs for bench seating if there are ≤20 seats per row, egress is possible by descending the tiers and the bleacher is not enclosed, and occupants can disperse freely at ground level. **Why a Bleacher Longer than 30' Without Aisles Would Violate NBC** The main reason behind restrictions for bleachers exceeding 30’ in length comes down to the maximum number of seats between aisles. NBC Article 3.3.2.8.(1) sets a maximum of 20 bench seats between aisles or exits.  This is a hard limit: If a row has more than 20 seats, intermediate aisles must be added. This rule is applicable regardless of whether patrons can descend over the benches.   Topics: [Bleachers](https://blog.sportsystemscanada.com/blog/topic/bleachers), [Accessibility](https://blog.sportsystemscanada.com/blog/topic/accessibility) [![Share on Facebook](https://static.hubspot.com/final/img/common/icons/social/facebook-24x24.png)](http://www.facebook.com/share.php?u=https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on LinkedIn](https://static.hubspot.com/final/img/common/icons/social/linkedin-24x24.png)](http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on Twitter](https://static.hubspot.com/final/img/common/icons/social/twitter-24x24.png)](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=A%20Matter%20of%20Length%3A%20When%205-Row%20Bleachers%20Require%20An%20Aisle%20to%20Meet%20Code) [![Share on Email](https://static.hubspot.com/final/img/common/icons/social/email-24x24.png)](mailto:?subject=Check%20out%20https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Demail%20&body=Check%20out%20https%3A%2F%2Fblog.sportsystemscanada.com%2Fblog%2Fa-matter-of-length-when-5-row-bleachers-require-an-aisle-to-meet-code%3Futm_medium%3Dsocial%26utm_source%3Demail) ### Subscribe to Email Updates ### Search for Specific Products or Projects This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. 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