JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Irregular column layouts Laying out design strips for irregular column layouts requires consideration of a number of issues. These include: Skew angles: whether latitude and longitude design strips should be strictly orthogonal. If tendons components from two directions are affecting the design strip. The following sections discuss these issues. Design Strip Skew Angles Effect of tendon components on design strip cross sections Examples of irregular grids Drawing design strips near walls Changing from PT to RC design Parent topic: Defining Design Strips