Designs oriented up the bolt do what in relation to designs that are railroaded?

In textile terminology, when referring to designs on fabric, "oriented up the bolt" describes how the pattern is aligned with the length of the fabric as it comes off the roll, or bolt. This means the design is positioned to run vertically, following the natural direction of how the fabric is usually cut. On the other hand, "railroaded" design means the pattern is oriented to run horizontally across the width of the fabric.

Thus, designs that are oriented up the bolt and those that are railroaded function in opposite directions. This distinction is crucial in interior design and textile application because it affects how the fabric will be used in various projects. For instance, if you are mixing or matching patterns, you must be aware that a vertically oriented design will not align with a horizontally railroaded design. This fundamental difference plays a vital role in achieving visual coherence in the final application, such as in upholstery, curtains, or bedding.