Portal Method – Moments and Deflection The portal method is an analysis method for used for finding approximate internal forces in indeterminate structures subject to a lateral load. Portal Frame Assumptions: Zero moment at the center of each girder. Therefore…
Stability – AISC’s Direct Analysis Method
Stability – AISC’s Direct Analysis Method Intro In the 14th Edition of the American Steel Construction Manual the Direct Analysis Method (DAM) is moved into the main specification from the appendix. I know many are not used to this new…
Surcharge Analysis – Elastic Methods – Strip Load
Strip Load Surcharge Analysis using Elastic Methods UPDATED – Problem Solved… Here we will dig deeper into analyzing strip loads with elastic methods. First to avoid confusion between seeing similar equations which use different reference angles, we will set our own nomenclature.…
Helpful Links for Determining Minimum Design Loads
Helpful Links for Determining Minimum Design Loads Hopefully these links can save you some time and help get you more accurate design loads. A quick heads-up – you will usually need to search the town/county/state to see if the Authority…
Surcharge Analysis – Elastic Methods
Analysis of Offset Surcharges on Retaining Walls Using Elastic Methods Offset surcharges are always up for some debate. Which method to use? What is the line of influence? Is the wall flexible or rigid? Well in this segment we will…
Masonry Shear Wall Design and Analysis – ASD Force Equilibrium
Design of Masonry Shear Walls – ASD There are a few methods that we can use to design masonry shear walls, see here for another ‘simplified’ method. Here we will present a method based on force equilibrium and an adjusted bar spacing.…