Deflection | Eng-Tips
Oct 21, 2009 · Deflection criteria are put in place for a variety of reasons, including aesthetics, limiting cracks, mitigation of creep, and to force sections to be more resistant to "dynamic" deflection such as …
Deflection check | Eng-Tips
Feb 1, 2013 · The proper Global deflection limit to use also has to do with what is on the roof as a roofing material - this looks like a rafter/beam situation is why I mention it. If the roof is tile, deflection …
Deflection Limits | Eng-Tips
Aug 3, 2001 · Dougantholz - It seems that deflection limits are up to the engineer who is designing, and not to exceed the limits set forth in code (l/240, l/360, l/600, etc.). Lets just say an l/360 delf. limit for …
Delection limits for cantilever frame | Eng-Tips
Feb 16, 2022 · Hi, Consider the case of a cantilever frame as seen in the attached picture. When you consider the roof beam as an individual beam with one end fixed, I consider the vertical deflection …
Deflection. Absolute or Relative? | Eng-Tips
Oct 4, 2019 · It depends what the goal of the deflection limit is. For most deflection limits in structures, the end goal is either user comfort or preventing issues with non-structural elements and finishes. In …
Building Code deflection limits perpendicular to joist/truss spans
Apr 13, 2020 · The IBC Floor and Roof deflection limits are frequently applied in the following manner for wood framing. The deflection of each floor joist or roof truss is checked to meet L/360 for Live Load, …
Solving Portal Frame Using Slope Deflection Equations
Oct 8, 2021 · The slope deflection method would not be my choice, but it is a perfectly sound method. Since the structure and the loading are symmetrical, consider half the structure (from point 1 to 3). …
Precast Panel Deflection | Eng-Tips
Mar 28, 2003 · I have a 2 story office building with a precast concrete panel band around the entire bldg at the second floor. Above and below is storefront. What would be a good vertical deflection criteria …
Cross Bracing Deflection | Eng-Tips
Jul 18, 2007 · The deflection in the model is over 10 inches, which I'm assuming is the cause of the high bending stresses. However, I have heard that braces are typically pretensioned to eliminate sag (and …
Plywood roof sheathing deflection | Eng-Tips
Jun 12, 1999 · jfmann and PDHal3 Could be that both your cases involve a similar situation that I encountered on a project where there was a multitude of warping across a pitched roof with plywood …