Choosing the right doors for commercial facilities depends on a unique set of considerations that is very different from that of residential structures. These doors must not only satisfy safety and design considerations, but they also must comply with local building codes and Americans with Disabilities Act (ADA) requirements. Commercial Minneapolis construction projects also need to fulfill the National Fire Protection Association (NFPA) fire safety standards. Other factors to be considered include insulation properties, maintenance and installation requirements and the lead-time of the material.
Swing and Revolving Doors
Depending on the specific design requirements, Minneapolis commercial contractors generally choose one of four main types of doors. The most common is the swing door. These doors are hung on hinges or pivots opening toward the exterior of the building. In the event of an emergency, this makes it easier for the occupants by allowing them to push the door open rather than having to pull it toward them to open it.
Minneapolis construction projects that require a higher level of security, such as a bank or a large office building, will generally opt for revolving doors. Revolving doors are made of two or more intersecting panels that hang on a center shaft, and rotate around a vertical axis within a round enclosure when activated either manually or by some electronic means.
These doors are excellent security devices as the spacing between the doors can be varied to allow single-person entry and prevent "tailgating." Certain commercial establishments use revolving doors that are designed with a sensor-activated brake for one-way traffic. Common examples include airports exits that prevent a person from bypassing airport security checkpoints.
Sliding and Overhead Doors
The third type of doors often seen in commercial construction is the sliding door. A sliding door is mounted on a track and opens horizontally by sliding. Sliding glass doors are popular choices for entrances to commercial structures. Minneapolis commercial contractors recommend sliding doors for locations where space is an issue, and it is important that the door not obstruct the width of a hallway.
Finally, there are overhead doors. Similar to garage doors, they are primarily used on vehicle maintenance facilities and loading docks. Sliding doors open vertically, rolling on tracks into an overhead position.
Other Considerations
Once the type of door is chosen, the next considerations are materials and hardware. The hardware for commercial doors differs from those meant for residential use. Minneapolis commercial contractors customarily use heavy-duty Grade 1 or Grade 2 hardware, which can withstand higher levels of abuse, on commercial doors.
The exterior skins of commercial doors are made from heavier or higher graded materials, with steel being the most common. Steel doors combine strength and security in a relatively cost-effective package. Glass and aluminum openings are also common, though they are primarily used for their appearance, as they are more vulnerable than steel. Other more expensive options include fiberglass doors that can last years with little or no maintenance.
To conclude, a number of decorative finishes are also available for commercial doors based on the material and application. While steel doors are typically primed and painted, fiberglass doors come in certain basic colors that will last for years with a little care. A Minneapolis commercial contractor will be able to help you make the right choice for the doors for your commercial building.
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