Foundations

Do I need a foundation for my metal building? - Some people choose to pour a full slab foundation, however if you're planning on leaving the floor in a dirt or gravel condition, concrete piers will do the job just fine. Please contact a customer service representative if you don't plan to pour a full slab foundation.

Can you provide an engineer stamped foundation layout? - Yes, but in some cases your soil conditions play a major role in the type of foundation you can use. Contact our special sales department for more information. If using a local engineer, we will provide anchor bolt plans to aid your engineer in designing the foundation.

Do you supply the hardware to attach the frame to foundation? - No, the anchor bolts are usually supplied by a concrete contractor and placed when the foundation is poured.

Sheeting

All sheeting is 26-gauge "R" panel. Color sheeting has a galvanized substrate to prevent rust and corrosion. All our Galvalume roof sheeting is hot dipped with a zinc and Aluminum compound to give it the strength to stand up to the worst weather, and the durability to last for generations.

Base Condition

Every metal building has some type of base connection along the building perimeter, allowing the connection of sheeting. This "base condition" determines exactly how the panels connect to the foundation. To prevent water and pests from entering the building at the base, panels extend below the finished floor of the building. Online design and pricing systems allows users to choose from a number of different base options.

Standard Base Angle - Our system defaults to a standard base angle condition. This condition consists of a single angle member, attached to both the wall sheets and the slab. Please note that the standard base condition requires that the slab be formed with a 1½" sheet notch to allow the sheets to extend below the top of the slab.

Deluxe Trim - Deluxe base trim is another option for buildings with concrete slab foundations. Deluxe base trim combines base angle and trim into one piece, providing all the benefits of base trim and base angle. Deluxe base trim is only available in burnished slate color.

Base Girt - The base girt option is designed for buildings that sit on piers rather than a full slab. A base girt system does not rest on or attach to the foundation. The base girt attaches to clips on the columns about 6" above the foundation. The base girt provides a great connection for liner panel.

Base Channel - The Base channel is a "cee" shaped section that runs the perimeter of the building connected to the floor. It is most commonly used when a liner panel, or interior wall, is going to be installed. The "cee" section provides a pre-positioned connection point for inside panels. This approach requires a sheet notch in the slab (for an alternative, see the combination of base channel and base trim below).

Condensation Control

The condensation process occurs when warmer moist air comes in contact with cold surfaces such as framing members, windows and other thermally conductive accessories, or the colder region within the insulation itself (if moisture has penetrated the vapor retarder). Warm air, having the ability to contain more moisture than cold air, loses that ability when it comes in contact with cooler surfaces or regions. When this happens, excessive moisture in the air is released in the form of condensation. If this moisture collects in the insulation, the insulating value is decreased.

In dealing with condensation, air may be considered to be a mixture of two gases-dry air and water vapor. One thousand cubic feet of air at 75°F can hold up to 1.4 pints of water. At 45°F, it can hold only 0.5 pints.

Relative Humidity is a percentage measurement of the amount of water vapor present in the air in relation to the amount it is capable of holding at that temperature. Therefore, 50% Relative Humidity would mean that the air is carrying only one-half of the total amount of moisture that it could be holding at that particular temperature. Cold outside air is usually much drier than warm inside air. Therefore, you can lower the Relative Humidity by bringing in outside air to mix with and dilute the moist inside air. At 100% Relative Humidity, the air is "saturated."

The temperature at which the air is saturated and can no longer hold additional moisture is called the dew point temperature. Whenever air temperature drops below its dew point, excess moisture will be released in the form of condensation. Condensation problems are most likely to occur in climates where temperatures frequently dip to 35°F or colder over an extended period of time.

Surface Air Film Coefficient (F)

The amount of heat flow in BTU's per square foot per hour between an exposed surface of a material and the adjacent air. It is the measure of the conductance of heat through the air film that clings to all surfaces.