Considerations

• There are two basic types of steel garage systems: stand-alone and I-beam framing systems. The I-beam system is very heavy and requires specialized equipment, such as a crane or forklift, to be installed. Also, the foundation must have a lot of extra reinforcement in order to support the weight of the structure. They are typically found in commercial and industrial settings. The stand-alone steel garage is built along the lines of tradition "stick' construction, which has a more even weight distribution and does not require heavy I-beams to support most of the weight. The heaviest components weigh approximately 30 pounds.
  
  Check with the vendor to find out what components are included in the quoted price. Some sizes or additional framing requirements, such as the trusses, may add to the cost.
  
  

Building Codes

• Speak to your local government's building department to find out the requirements for installing a DIY steel garage. It may be helpful to take along the specifications for the product you are considering before making a purchase. This will ensure that you can install a garage that meets yours needs and satisfy building codes.
  
  

Foundation

• Although you can anchor a DIY steel garage system to the ground, most people prefer to install the garage on a traditional concrete slab, especially if they are using the structure as workshop. If you plan on anchoring the building to the ground, consult with the building inspector to find out if it is an acceptable method of installation.
  
  The cassion technique consists of pouring concrete into holes in the ground which are about 10 inches wide and 30 inches deep, and embedding long anchors in the wet cement every 48 to 60 inches around the perimeter of the garage.
  
  The standard concrete slab approach is to simultaneously pour the footings and concrete slab together. Make the slab four to six inches thick and about 48 inches wider and 72 inches longer than the steel garage. The extra footage will guard against cracking the concrete when you install the anchor bolts.
  
  

Main Assembly

• Follow the product instructions for assembling the steel garage frame. Generally, start by installing the base plates or rails to the cassion or concrete slab foundation. Then, attach the trusses, which form the primary structure for the roof and the walls. Secure the purlins, which are the horizontal framing components that span the roof structure, in place.
  
  Some systems also require the assembly of girts, which are horizontal pieces for strengthening the walls of the steel garage. After you frame the windows and doors you can enclose the building with the wall and roof panels.