There is a common misconception that columns in the middle of a building are a disadvantage, That is not necessarily the case. Many businesses actually find columns useful as a place to lean things against and/or attach things to. They also generally allow for a much larger building.
The following is an overview of the three different types of multiple span buildings to consider for your building project.
Single Slope
Multiple span single slope buildings have posts to hold the roof up. Because side wall capacity is less dramatic than that of clear span buildings, steel does not have to be as thick. This translates to cost savings.
Many companies use these layouts for warehousing. Integrating shelving is possible, taking advantage of the posts to keep shelving stable.
Ideal structure type for:
- Distribution centers
- Manufacturing facilities
Tapered Column
The multiple span tapered column can also be cost effective because it has a post in the center which cuts down on steel in the roof line. Many companies like having a post in the center of their workshop as it is a great place to put air lines or trouble lights. Posts also allow you to have a much wider building. For those who don’t want columns in the middle of the interior, a clear span building is a better option.
Ideal structure type for:
- Warehouses
- Truck shops
Straight Column
Multiple span straight columns generally have a lot of posts. The side walls you find in these work well for shelving because the tapered column gets thicker at the top and smaller at the bottom. So in a warehouse with straight columns, for example, where there are racks or storage units, it can be easier to work with a straight column structure. Heavier cranes. supported by the building rather than by columns are also sometimes easier to install.
Thanks to the large number of columns, you can also double the width you would normally get with clear span buildings—up to 600 feet. Another determining factor as to whether or not you can actually go this wide depends on location. Wide structures are more feasible in places without a lot of snow.
Ideal structure type for:
- Warehouses
- Distribution centers
- Manufacturing facilities
While some companies opt for clear span buildings which allow for drive through bays and easy movement of tools, others prefer having columns in multiple span buildings as they allow for a place to put power outlets, automatic grease guns, trouble lights, and air lifts.
In a clear span, a post can be added to accommodate some of these items, therefore your decision is not etched in stone. That post can always be removed should the application of the building change, allowing for flexibility.