That will open up the following Table where we can add in Loading Checks Climatic Loads, for example, such as a Heavy Ice check, a High Wind check (at a given angle of wind direction) and a Wind on Ice check (again at a given angle of wind direction). To enable Structural Loading checks in PLS CADD we need to add the specific checks to Criteria - Structure Loads (Methods 3 and 4). PLS CADD can also consider the effects of deflection and node displacements and perform a full non-linear structural assessment, very important when considering guyed or slender structures.
Clearly then, things have moved on and PLS-CADD provides a powerful toolset to help us query structural issues and determine the integrity of a tower. Previously this would have been performed using Statics or in the case of an indeterminate structure force diagrams or method of sections. What if that configuration changes, or the Conductor System? In that instance, the Engineer needs to verify that the structure is capable of withstanding the applied loadings for that revised arrangement. Why would you want to do this? Well, a Structure would normally be designed to withstand the loads (wind and Ice) for a certain Conductor System, Span, configuration and location.
Pls cadd examples how to#
In my latest In-Depth Look article, I wanted to go through how to run structural checks in PLS-CADD. By Paul Richardson - Director of Engineering at NM Group