Rixson Specialty Door Controls
9100 Belmont Ave
Franklin Park, IL 60131
Tel: (847) 671-5670
Web site: http://www.rixson.com
Floor closers provide the best mechanical means of
controlling a door. They are designed to work with the laws of
physics to provide long-lasting performance and reliability.
The weight of the door is supported entirely by the bottom
arm, which is directly connected to the floor closer spindle.
This hanging means provides several important mechanical
advantages:
• Fasteners on the door and frame are in shear rather than
tension (as with hinges) and are less likely to pull out over
time. This creates less stress on the frame assembly,
prevents door sagging and allows the door to swing with less
resistance from friction.
• A door supported in this manner relies on the strength of the
floor to carry the weight, not the frame. This allows extremely
heavy doors to be hung in an opening and lets any weight
door swing with more efficient geometry. Doors hung on floor
closers also allow for vertical adjustment throughout the life
of the building to compensate for settlement.
• The direct connection between the bottom arm and the
floor closer spindle creates a tremendous increase in
efficiency compared to surface closers with exposed arms.
A floor closer produces an 85% closing force to opening
force ratio where surface closers are approximately 60%
efficient. A floor closer is far superior in closing a door when
weather conditions or building stack pressure are factors.
Rixson® Heavy-Duty Floor Closers take this efficiency
concept to an even higher level by utilizing helical torsion
springs.
In addition to these important mechanical and door control
advantages, floor closers are fully concealed to maintain
aesthetic design of the opening and to prevent vandalism or
tampering by unauthorized individuals.
DOOR MATERIAL |
Door Thickness |
| 1-3/8" |
1-3/4" |
2" |
2-1/4" |
2-1/2" |
| Weight-per-square-foot (in pounds): |
| Aluminum |
|
3-1/2 |
|
| Ash |
4-1/2 |
5-1/4 |
6 |
6-3/4 |
7-1/2 |
| Birch |
3-3/4 |
4-1/2 |
5 |
5-3/4 |
6-1/4 |
| Hollow Metal |
6-1/2 |
6-1/2 |
|
6-1/2 |
|
| Oak |
6 |
7 |
8 |
9 |
10 |
| Pine |
3 |
3-1/2 |
4 |
4-1/4 |
5 |
|
| Lead Lining |
Lead Thickness |
| 1/64" |
1/16" |
1/8" |
1/4" |
|
| Weight-per-square-foot (in pounds): |
| 1 |
3-3/4 |
7-1/2 |
13-3/4 |
|
| |
| Tempered Glass |
Glass Thickness |
| |
3/8" |
1/2" |
3/4" |
|
| Weight-per-square-foot (in pounds): |
| |
5 |
8 |
9-3/4 |
|
| |
Marble/Granite
Cladding |
Thickness |
Weight-per-square-foot
(in pounds): |
*3/4"
10-1/2
|
|
Example: A two-inch-thick birch door has
a square foot weight of five pounds. If the door has standard dimensions
of 3'(width) x 7'(height), this equals 21 square feet. So, 5 pounds x
21 square feet = 105 pounds total weight.
*Consult
factory for sizes greater than 3/4"
|
3. Expected Frequency of Door Operation
| Application |
Daily |
Yearly |
|
| Large department store entrance |
5,000 |
1,500,000 |
High |
| Large office building entrance |
4,000 |
1,200,000 |
| Theater entrance |
1,000 |
365,000 |
| School entrance |
1,250 |
225,000 |
| School restroom door |
1,250 |
225,000 |
| Store or bank entrance |
500 |
150,000 |
| Office building restroom door |
400 |
118,000 |
| School corridor door |
80 |
15,000 |
Average |
| Office building corridor door |
75 |
22,000 |
| Store restroom door |
60 |
18,000 |
| Residential entrance door |
40 |
15,000 |
| Residential restroom door |
25 |
9,000 |
Low |
| Residential hallway door |
10 |
3,600 |
| Residential closet door |
6 |
2,200 |
- Floor closers are fully concealed to
maintain aesthetic design of the opening.
- Full weight of door is borne by floor
closer, providing trouble-free operation
and long life.
- Doors up to 1,500 pounds are
accommodated, allowing standard and
heavy doors in a building to be hung by
the same means.
- Available offset or center hung to
accommodate any installation.
- Vertical adjustment provides for field
adjustment of the door if required.
- Specification of heavy panels on the
door face with standard offset floor
closer preparation available.
- Full floor-to-ceiling concealment is
offered for center hung doors, providing
almost unlimited design flexibility.
- Extended spindles available to
accommodate any floor condition.
- Offset models available 3/4" or 1-1/2"
offset.
- Offset models available for lead-lined
doors.
- Offset models available for fire door
assemblies up to three hours.
- Spring tension and closing speed are
field adjustable.
- Built-in fully adjustable hydraulic
backcheck standard on 27 and 28.
- Available in all standard architectural
finishes.
Factory-installed on 27 & 28 Series
closers. Hold-open may be turned on/off.
Available on certain series closers with or
without dead stop. Preset at factory for
specific degree of hold-open. Degree of
hold-open cannot be changed, nor can
closer be made into non hold-open.
Provided on barrier-free installations.
Permits door to remain ajar (at 70°) for up
to 30 seconds. Operates by separate
valve and can be shut off if not needed.
Not available on closers furnished with
cold weather fluid, and not recommended
for exterior applications because of
weather factors. (27 & 28 series only)
To comply with guidelines established in
the American With Disabilities Act, lighter
opening forces are met if closers are
ordered with a PH prefix. If 5 pounds of
opening on interior doors is needed,
simply order PH. If 8.5# of force is needed,
specify Prefix PH and suffix 8.5#.
Be advised that lower opening forces
mean lower closer forces. PH products
should not be ordered for exterior doors
or fire rated openings. Fire/Lifesafety
openings take precedence over the
convenience of ADA. Securing a building
is also a major concern and a lighter closer
may not be strong enough to secure a
latch bolt in a strike. Use care when
specifying PH products.
Should be considered in installations
where ground temperature is constantly
below +15°F. May be used in temperatures
as low as -35°F.
Used where water contact may occur.
Provides gasketing and a cover plate that
are epoxied around the case with the
closer inside. Not available for replacement
closers unless cement case is also
replaced.
Used on labeled fire door requiring
steel base pivot. PH with 3 pounds of
opening force may not be used on fire
doors.
, Smoke Doors, brass base pivots.
Absolute door control - top and bottom - with a single
packaged system. For high traffic volume, entrance and
exit conditions. Single source responsibility saves
money, simplifies specification, and eliminates
coordination of templates.
Combinations Available: Dependable Rixson® 25, 27, 28
and 30-40 Series closers – teamed with rugged
Checkmate® No. 1, 8 or 9 Series overhead holders –
eliminate door and frame damage caused by racking and
twisting.
The combination 27/28 closer-holder package cushions
and dead stops the door, top and bottom, at 85°, 90°, 95°
or 105°. The hold-open function is controlled by the
holder and will be approximately 5° to 7° less than dead
stop desired. The 27, 28, 30 and 40 closer-holder
combination is coordinated to dead stop at the same
degree. The impact of opening is absorbed by the shock
spring in the holder at the top, and the hydraulic
backcheck and dead stop in the floor closer at the bottom
of the door.
Floor Closer shall be Model 27 (offset hung) or Model 28 (center hung) and shall be available for labeled fire doors and lead-lined
doors (offset hung) as well as regular doors. Closer to have separate and independent and adjustable valves for closing speed, latch speed and backcheck. Independent delayed action option to be available. Model to be available for physically
handicapped access as required by building codes. Closer shall be available non hold-open, or selective hold-open at 85, 90, 95 or 105 degrees. Closer to have built-in dead stop to prevent door from swinging beyond required opening degree.
Offset hung floor closers are available for fire door assemblies up to three hours (“F” Series) or 20 minute (-20 Series), are UL listed and handed. According to NFPA 80, labeled fire doors up to 60" in height shall be provided with two hinges or pivots and an additional hinge or pivot for each 30" of door height. The distance between pivots may exceed 30". Specify quantity of
intermediate pivots required. Product features and templating are identical to regular floor closers and intermediate pivots. Do not use PH closers on fire door assemblies.
For more information on specific Rixson Heavy-Duty Floor Closer products and accessories, please refer to the "Heavy-Duty Floor Closers" catalog available on the Rixson web site at: www.rixson.com/library/catalogs/
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