Thermal Conductance (C-Value)

A measure of the amount of heat that passes through materials of any thickness.

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.

Frame Types

Unlike any of our competitors, we allow you to price all building frame types. Select from Clear-span or Modular rigid-frame buildings. We allow you the full flexibility to choose Gable, Single Sloped or Offset Peak building shape. By far, we offer the widest selection of building and frame types. For options not available through the online system, you will need to request a special quote.

Clear-span Frames - A clear-span rigid frame offers strength and economy. Since no interior supports are necessary, this design is best when you require large areas of clear and uninterrupted space. Factories, warehouses and agricultural buildings are just a few building types that may utilize a clear-span frame building. A clear-span design does have size limitations. As the desired width increases, the frames will become larger and heavier to carry greater loads across the length of the frame. At some point the cost will outweigh the benefit. Even so, clear-span buildings are still effective for buildings as wide as 150' feet and wider in some cases.

Modular Frames - Modular frames use interior columns to evenly distribute the load; reducing the cost of both the frame and foundation of extra wide buildings. The economical advantages become obvious when a building width is about 100' wide or wider. As a result, almost all buildings 100' wide or wider have interior support columns. Modular designs are often used for large factories and warehouses.

Single Slope Frames - Single slope frames have high and low eave heights creating a roof that "slopes" from side to side. To select a single slope design, you specify one eave height and define the roof pitch. Single slope designs are frequently used for strip shopping centers, offices, and RV/Boat storage facilities.

Just about every steel building has at least one framed opening. It is not unusual for buildings to have several openings. Most openings are created for an overhead door, but can be used for the installation of glass fronts or other entries. Most other online sellers offer "field located" framed openings, which require cutting and fabricating on the job site. Metal Building Depot always provides factory-located openings unless your project requires something otherwise.

Installation Overview

The metal building is rapidly becoming more popular for a variety of reasons. They can be built very quickly and are extremely low in cost. They can easily adapt to any number of external architectural treatments without restricting their interior floor planning. A primary reason for this flexibility is the development of insulation specifically designed for metal buildings. The development of advanced insulation systems with more efficient thermal performance is so advanced that it has enabled metal buildings everywhere to evolve into many of the showrooms, retail outlets, schools, offices and shopping centers we see today.

Today's high-energy costs have made insulation a critical consideration during any construction planning. An insulation system that is properly selected and professionally installed will return more on its investment than any other building component.

Insulation provides many benefits:

Improved appearance, Greater comfort, Substantial reductions in fuel and electricity costs, Condensation and noise control, Reduction of the amount of investment dollars and space needed for heating and cooling equipment.

When you decide to buy a Building

Confirm the accuracy of your building codes. It is imperative that your building conforms to the state, local and federal design requirements.

The items described on your contract are what you are buying. Please be sure to carefully review all contract documents before you sign off. If a contract does not describe an item in specific terms, you should not expect the item to be the best product available. And just as important - is what a contract does not say. Specifically if your contract does not indicate that you are getting framed openings and garage doors - then you are NOT going to get framed openings and garage doors.

Do not sign a contract or agree to purchase a building before you have confirmed that your building will satisfy the requirements of your local building official and YOURSELF. Do not allow a salesman to pressure you into a "panic buy." A "panic buy" is when a customer is pressured into making a purchase to "lock-in" a "so-called" special price. Brokers are notorious for telling customers they could lose an opportunity to get the "deal of a lifetime" if they don't commit to the order right away. Beware of people who urge you to sign a contract before you have made your mind up on exactly what you want.

Understand that making changes after the sale will cost you money. Once the design is completed it will cost money to make changes. If an order is in fabrication - and requires modifications due to customer demands - the entire process has to be stopped, pulled off-line and inventoried. Once the inventory of completed items is confirmed, it's back to the drawing board. You will be responsible for extra time required to re-design the project and all other associated expenses.

Install your building components as specified by the drawings. Seldom do manufacturers use the same design practices and therefore your erection drawings and installation documents are the correct description of the building. Please read and follow the drawing descriptions carefully. An erection manual offers important general guidelines and the proper procedures for erecting a steel building safely. You, your erector and all jobsite crew need to understand and utilize OSHA and all other safety guidelines.