The Rules of thumb for steel design, are a great tool every Engineer should know. They are an easy way to check Steel designs, scheming up steel structures or answer questions on the size or depth of structural steel framing during design meetings. Steel design Is always a question of where to start and a great place to start a structural design are basic rules of thumb to get you within the ballpark. I will be covering the rules of thumb for both Steel, Composite, columns and portal framed structures. Span to Depth Rations - Steel framing Floor beam Joints 18-20 Max 17m Floor Beam, primary 13-15 Max 12m Roof Trusses 14-18 Max 17m Space frames 20-24 Max 60m Rafters 25-32 Max 16m Span to Depth Rations - Composite Beams Floor beam Joints 23-28 Floor Beam, primary 15-20 Columns 200UC ~ up to 3 stories 250UC up to 5 stories 300UC up to 8 Stories 350UC up to 11 400WC up to 15 Portal Frames - Span to Depth Rafter 60 Column 50 Spacing 5 to 8 meters minimum 2 to 3 degrees pitch number of bolts depth / 100 in mm What to watch next Design Building to be Earthquake Resistant https://www.youtube.com/watch?v=ThgkalgWoZc Engineering Reality Vs Expectation https://www.youtube.com/watch?v=AJg60CJ9X20 Day in the Life of A structural engineer in the office https://www.youtube.com/watch?v=Dj7NMRXy-yU The Citicorp Center a near-miss https://www.youtube.com/watch?v=QvGSspMwKp8 is BIM the future of engineering https://www.youtube.com/watch?v=fu2diIsiTfs The Golden Rule of Steel design https://www.youtube.com/watch?v=KWnBNf1INfs 💡💡💡 My name is Brendan and I am a structural engineer with over 15 years of experience based in Australia. I have a wide variety of projects from very small to some of the biggest in the southern hemisphere. I have a passion for good structural design and teaching/mentoring. This channel is to share my passion for engineering and provide entertaining short clips on: - tips for young engineers on progressing their careers - anyone needing a refresher on any design element - design approaches - Review past engineering failures to improve structural knowledge 💡💡💡 📧LinkedIn Profile: https://www.linkedin.com/in/brendan-hasty-48a40a3b/ 👍Support the channel on Patreon: https://www.patreon.com/BrendanHasty or Donate Directly via Paypal https://paypal.me/BHEngineering 🔴🔴🔴 Disclaimer: Some of the below links are affiliate links as an Amazon Associate and other affiliate programs I'll earn a small commission from qualifying purchases at no additional cost to you. 🔴🔴🔴 📚Recommended Books for engineering Communication Try Audible Premium Plus for free https://amzn.to/36B4pm0 up to 2 free books https://kit.co/Brendan_hasty/recommend-structural-engineering-book Concrete Structures Warner https://geni.us/ConStruct Steel Designers' Handbook https://geni.us/SteelHand Soft is the new Hard https://geni.us/SoftHard Also on Audible How to Win Friends & Influence People https://geni.us/WinFriend Also on Audible Never Split the Difference: https://geni.us/SplitDiff Also on Audible The Subtle Art of Not Giving a https://geni.us/SubtleArtNF Also on Audible Books on Structures For anyone who wonder about the engineering behind building design bringing back the fun to engineering. Why Buildings Fall Down: How Structures Fail https://geni.us/WBFD Structures: Or Why Things Don't Fall Down https://geni.us/WBDFD 🎥home office https://kit.co/Brendan_hasty/engineering-home-office MX Master 3 https://geni.us/MXmo Logitech K580 White https://geni.us/LogiK580 Samsung 32 Curved https://geni.us/rAIO Philips 32 4k https://geni.us/32Phillips Zbook Dock https://geni.us/ZDock Zbook https://geni.us/Zbook 🎥Gear and Video Editing https://kit.co/Brendan_hasty/youtube-creator-setup Rode VideoMic Pro+ Microphone https://geni.us/RVMP Neewer 660 LED Video Light https://geni.us/N660 Neewer 480 RGB Led Light https://geni.us/N480 Sony A7 SIII https://geni.us/2X1kwK camera Samsung S20 https://geni.us/SS20 🎥Video Editing AMD Ryzen 9 3900X https://geni.us/HVrKeZz MSI Meg X570 https://geni.us/kwY70ua RTX 2080 Super Gaming windforce https://geni.us/O1AC Samsung 970 PRO 1TB https://geni.us/SPR70 Samsung 970 EVO Plus 1TB https://geni.us/S970Ev Fractal Design Define 7 https://geni.us/FD7B 🎥SEO tool Tubebuddy https://www.tubebuddy.com/BHEngineering Chapters 00:00 Intro 00:15 Why Use Rules of Thumb 02:08 Efficient Framing Grids 05:00 Span to Depth Ratios Beams, Trusses for Floors and Roofs 08:48 Span to Depth Ratios Composite Beams and Joist 10:36 Column Sizes 11:12 Portal Frames 12:31 Connections