Steel doors are among the strongest and most
secure and are available in many
different gauges and core types that
determine their strength. Proper
door selection is based on Resistance to Impact and Frequency of
For a more secure application, consider
specifying a heavier gauge door than the commercial standard 18
gauge. Also, be aware that your local
community authorities may have specific requirements for steel doors
and grates in your business. Some areas may require
steel doors of a certain strength. You will need to check with
the local laws first before buying a steel door.
You should also check with your insurance
broker. Your insurance carrier may have specific suggestions or
you have the money, you may wish to consider installing man traps.
These are simply two steel doors used together. Clients are allowed
through the first door, which is then locked before they are allowed
through the second door. The advantage of this is that it makes
armed robberies very difficult because the robbers have to go
through the man trap to get out.
Standard commercial steel doors are available
in 18, 16, 14, and even 12 gauge
resistant and detention type applications. Steel door cores come in
a variety of
materials and configurations as
well, among them, honeycomb, steel truss, polystyrene,
polyurethane, and steel-stiffened.
Consider specifying truss core or vertically
stiffened steel doors for more secure openings. These doors have
internal steel “ribs” welded to both face sheets of the door.
This makes the door stronger,
stiffer, and more resistant to impact.
Here are some helpful links to research
Commercial Steel Doors.