A forum community dedicated to professional woodworkers and enthusiasts. I've made quite a few picture frames and I still don't trust myself doing it by measurements alone. Three Member Frame (Pin / Pin) - Top Point Load. Additional information regarding engineering frame theory and the assumptions that have been made … Your comments: Excel spreadsheets on steroids! Check out Eng-Tips Forum's Policies here: I then cut a 45, and measure from the inside corner of the rabbet to get my cutting length. Real-world case studies are provided. That would be from long point to long point. The above frame formulas may be used with both imperial and metric units. if i was cutting, no problem. You'd need to be able to bring some charts with you however. I lay the picture (and glass if used) on the angle I've just created and mark the other ends a little long. Copyright © 1998-2020 engineering.com, Inc. All rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission. Frame Formulas. This article is currently only available in PDF format, please click the link to the top right. "If I agreed with you, then we'd both be wrong! He covers lateral deflection of both moment frames and braced frames. :huh: Your formula is right on the money! These include steel, reinforced concrete and laminated timber such as glulam. I rip long strips, dimensioned for the frame thickness and rout the rabbet, and whatever profile I want on the frame. 2 Recall from mechanics of mater-ials that the internal forces P (generic axial), V (shear) and M (moment) represent resultants of the stress distribution acting on the cross section of the beam. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. Click Here to join Eng-Tips and talk with other members! For engineering and manufacturing organizations, the need for digital transformation of product development processes just became more urgent than ever so we wanted to share an eBook that will help you build a practical roadmap for your journey. Portal frames are generally low-rise structures, comprising columns and horizontal or pitched rafters, connected by moment-resisting connections.Resistance to lateral and vertical actions is provided by the rigidity of the connections and the bending stiffness of the members, which is increased by a suitable haunch or deepening of the rafter sections. A portal frame composed of box-profile cross-section members shown in Figure 7 is analyzed by the proposed method. Simple geometry of a 45 degree triange (a squared + b squared = c squared and with a 45 a=b). Metric and Imperial Units. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it. on a Portal Frame. It's much easier to measure from the point than it is from the rabbet. viewframes. The answer was that you can simply take the moment diagrams up the length of one column and use the moment area method to get the deflection quickly at the top. Already a Member? The first frame is fixed at the base, while the second one is pinned at the base. Share. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Formula?!?!?!?!?