Controlling Condensation

Two things must be present for condensation to occur: warm moist air and cool surface temperatures below the dew point. The proper control of these two factors can minimize condensation.

In metal buildings, we are concerned with two different areas or locations: visible condensation which occurs on exposed surfaces below dew point temperatures, and concealed condensation which occurs when moisture has passed through the vapor retarder and into interior roof and/or wall cavities and then condenses on a surface below dew point temperature.

Heat Transfer

Effectively controlling temperature in a steel building requires insulation to be present along exterior walls and roof. When a temperature differential is present in an enclosed steel building, heat will work from warmer areas to colder areas until the temperature in the building has stabilized. At the point of thermal stabilization, the cooler (and heavier) air will be present at lower elevations and warmer air will be present at the roofline. The function of insulation is to help stabilize air temperature at more desirable levels. When it is hot outside, preventing heat from transferring into the building is the goal, and of course in the winter we want heat to remain inside.

Heat transfer occurs in three ways:

Conduction : Occurs in a solid or liquid when heat from one object is transferred by touch to another object. An example of this occurs when a pot on a stove will heat up by conductive heat transfer from an electric coil.

Convection : Occurs with the physical movement of air. There are two types of convectional heat movement. The first is natural, where hot air rises displacing the cold air and moving it down. The second type is forced or mechanical convection. This occurs when an object, like a fan, physically moves or "forces" the air to move.

Radiation : Occurs when an object is warmer or hotter than the air around it. For example, the sun, which is hotter than everything around it, radiates heat waves that travel through the air and is either absorbed by or reflected by the surface it comes in contact with.

Storage Buildings

It almost appears that almost every, home and garage is bursting at the seams. Surplus or unneeded equipment, furniture or other belongings clutter closets, attics and garages. But, the option of monthly storage fees does seem like a hefty price to pay just to hold on to the things you have.

Self-storage buildings are an easy way to put your money in someone else's pocket. Holiday decorations, childhood keepsakes and files all need to be retained for different reasons, but the cost of storage is a burden. Owning your own storage buildings is one way to lessen the expense of personal storage with a one-time quality investment.

The exciting thing about steel frame storage buildings is that you only buy them once. Mini storage is not as friendly you pay and pay, but you never own anything but the contents you placed in them. You may think that you don't need something as permanent as owning a personal storage building. But think about it - when are you going to let go of the things you have decided to save?

PUBLIC and CHURCH

Serving the building needs of America's churches, schools and local, state or federal government is a challenge. A church in Tennessee (above) employs a 60-foot clearspan structure with a specially designed hip-roof to accommodate a spacious open sanctuary. Wood and drywall were used to cover the massive steel beams that meet in the center and support the heavy, built-up roof system. Outside, the application of brick gives the feeling of strength and permanence.

Framed Opening Cover Trim

Full cover trim. Provides head and jamb cover trim and sill trim if applicable, so that no red iron is visible at the opening.