Partial Canopy Mobile

Partial Canopy
Flexibility:
Our partial canopy hangar door systems
are available in many configurations to
meet your specific requirements. Having
built partial canopy door systems over
35' tall and over 120 feet in width, with
wind loads (while closed) up to 200mph,
we are confident that we can build a
system that will meet your requirements
or your imagination.

Design:
Doors are designed using CAD and
structural engineering sotware. Door
frame structure and connection designs
are certified by an independant engineer.
Door frames are engineered using
structural steel and cold formed
memebrs per AISC and AISI codes.
Wind loads are calculated using your
location and building size for the most
accurate structural loading possible. We
don't make an assumption on the wind
load by using an arbitrary standard, we
check every time.

Construction:
Door components are manufactured to
the highest standards and designed to
be completely bolt together, avoiding
costly delays due to welding inspections
and the availability of certified welders in
the field. Door components are also
designed to have as few connections as
possible, simplifying and increasing
assembly speed on the job. This lowers
the total installed cost for your door
system.

Lift System:
There are three systems available for
lifting. The premiere design we use for
lifting doors is the hydraulic lifting unit. By
utilizing a hydraulic cylinder to control
door movement a large safety factor is
gained. Hydraulic fail safe valves are
used to lock the cylinder in place if a
control valve should fail or a hydraulic line
is ruptured or damaged. (We became
real believers in this system and the
components we use after another
company's careless employee ran a
piece of equipment into the hydraulic
lines of a large canopy door while the
door was open and construction
personnel were working directly
underneath it. Other than some hydraulic
oil that spilled out of the broken pipe
there was no further damage to the door
system and more imporantly the door
didn't fall. So no one got hurt, or worse.
This particular door weighs over 14,000
lbs. After settling about 1", which is the
fluid volume necessary to activate the fail
safe valve, the door maintained it's
position for over a week before we were
contacted and repairs could be made).
The closing speed can be easily tuned by
adjusting the factory installed speed
control valve. The lifting winch system
offers simplicity in design and
installation. The lifting winches are
directly mounted to the door frame, so no
lift unit is necessary. No pulleys need to
be added to the building and no
compressive force is exterted on the
header. All this adds up to very few
moving parts, which equates to lower
maintenance costs over the life of the
door. The third lift system available is the
tried and true counterweight system. The
counterweight system has been used on
countless doors for as long as doors
have been built. The main drawback with
this system is the space required for the
counterweight tower and the cost of the
counterweight material.

Supporting Cables:
Partial Canopy doors are supported by
galvanized cables using a safety factor of
at least 5-1, stainless steel cables
available upon request.

Door Supporting System:
The cables are supported by solid steel
pulleys that are machined in house and
installed with roller bearings for a long
service life. Pulley axles are drilled and
tapped for grease fittings for ease of
maintenance.

Weatherstrip:
Weatherstrip is 1/8" cloth inserted
epdm. Weatherstrip meets military
specifications for durometer, UV
resistance and incidental exposure to
paint thinners. Retainer bar is fastened
by zinc coated self drilling screws every
8" for a secure seal without oil canning of
retainer bar. Retainer bar is easily
removed for replacement of
weatherstripping if it becomes
necessary. Leading edge bubble seals
alow for 4" of compression.

Electrical Controls:
Door control panels are manufactured in
house using only the highest quality UL
listed components. Door control systems
utilize electromechanical relays that are
highly resistant to electrical interference
and have no programming that can
become corrupted requiring service.
Door control systems also utilize solid
state proximity sensors for limiting door
travel. These sensors are water proof
and have no moving parts to wear out.
Door control systems can be supplied
ranging from 12VDC to 600VAC.
Variable frequency drives are available
for custom tuning or varying of door
operating speed. Variable frequency
drives come with variable speed buttons
with 3 adjustable speed settings
standard, 5 speeds as an option.

Standard options:
Timer delay with safety noisemaker
and/or strobe light, safety edge with
delay and/or auto reverse, personnel
door frames and safety interlock sensors,
explosion proof drive system, air drive
operating system, hydraulic drive
operating system, 12VDC backup
hydraulic pump system, engine driven
backup hydraulic pump system. Door
drive motors and control panels are fully
assembled, wired and tested at our
facility prior to shipping.

Please call with your custom option
requirements, we are here to create the
system that meets your needs and your
imagination.