https://stream.echo6.co/videos/watch/316e4d77-a20d-4058-9a0f-205420f2af86 At first glance, it looks wrong—your I-joists don’t line up flush with the rim board. But that’s not poor framing…it’s how engineered floors are designed to work. In this Rational Spec episode, we explain why floor systems are built this way and break it down in plain language so it makes sense whether you’re a homeowner, DIYer, or pro framer. What you’ll learn: Why rim boards are taller than I-joists How load paths work in engineered wood floors The purpose of web stiffeners & squash blocks Tricks for staging and cutting long I-joists efficiently Blocking details that matter in seismic zones Simple tips to frame smarter, not harder If you’ve ever looked at a floor system and thought “that can’t be right”—this video is for you. 📚 Resources: APA Engineered Wood Association → apawood.org PWT I-Joist Guides Sponsored by PWT. All lessons and framing experience are 100% ours. Some of the links below are affiliate links. I may make a small commission off of them. ISOtunes Bluetooth Hearing Protection - https://bit.ly/Timmy10 (10% off code: Timmy10) 5% coupon code "NGDAWESOME" and the free freight on fastener orders over $1,000 with code "FREESHIPPING The tools I use and recommend https://acmetools.pxf.io/AwesomeFramers Instagram www.instagram.com/awesomeframers/ website https://www.awesomeframers.com/blog https://www.tiktok.com/@awesomeframers Company https://pioneerbuildersonline.com/ https://www.youtube.com/c/PioneerBuildersInc Click here for a discount on Hyspecs Safety Glasses www.iwearhyspecs.com/timmy10 Oh and another takeaway, if you use a drone for commercial work, you need to be part107 certified. Commercial work includes social media like YouTube if you plan to make an income off of that. I watched a video about this last May and then purchased the Part 107 Course https://sso.teachable.com/secure/245841/checkout/1320802/bundle-remote-pilot-plus-maneuvers?affcode=245841_0eauthdo&coupon_code=FRAMERS100 I studied and learned for 1 month and then took my test. I scored a 95%, which is a testament to how good Greg and the crew over there teach. That link will save you $100 off the course and support this channel. 0:00 Intro — Why aren’t these flush? 1:15 Rim boards vs. I-joists explained 3:05 Web stiffeners & squash blocks (when and why) 5:20 LVLs to support hallway walls above 7:00 Cutting and staging 44' I-joists efficiently 9:10 Jordan the block-cutting machine 11:05 Pro tip: cutting I-joists without a tape measure 13:20 Nailing details & following APA specs 15:40 Rolling and installing long joists solo 17:55 Blocking strategies in seismic zones (D2) 20:30 Lessons from decades of floor framing 22:50 Reading PWT / APA install guides (where to find details) 25:40 Inspector approval & covering before the rain 28:00 Ordering I-joists & how layouts are designed 31:15 Why not to split joists over pony walls 34:00 Floor system overview — ready for sheathing 36:15 Wrap-up: framing smarter, not harder Fri, 24 Apr 2026 19:43:15 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/316e4d77-a20d-4058-9a0f-205420f2af86 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.