Installation
valley
vault
flush cut end
valley
vault
ID stamp
24"
23
3
/4"
72"
23"
vault
valley
PART LIST
A
A
B
B
C
C
D
D
E
E
F
F
Instructions
One-Directional
™
Curvatura
3-D System
Page 1 of 12
Before beginning installation of the Cu r v a t u r a One-Directional Ceiling System, check the enclosed bill of materials
to ensure that all parts and components are present and undamaged. Read all installation instructions first
and familiarize yourself with the system’s parts and components. This is extremely important because parts will
become permanently damaged if they are installed incorrectly! To help with identification, all parts are poly-bagged
and labeled. Parts and components may include some or all of the following:
Parts and May include some or Installation videotape Bill of Materials (BOM)
Components
Flush-Cut Main Tees for Termination Vault, Valley, and/or Straight Main Tee Segments
Main Tee Splices Termination Cross Tees
all of the following:
Stabilizer Bars 28 x 68 C
C
Edge Trim Fascia Splices Edge Trim Corner Clips C
(if specified on BOM) (if specified on BOM) (if specified on BOM)
u r v at u r a Panel Joint Splices Edge Trim (if specified on BOM)
u r v at u r a One-Directional Panels
u r v at u r a Wall Attachment Clip
One-Directional Cu r v a t u r a
Installation Instructions
Page 2 of 12
Step 1: Install First Row
of Main Tees
Step 1:
Install First Row
of Main Tees
1. 1. 1.
A. B. C.
Lay the main tees out on the ground as
they will be arranged in the installation.
1. 1. 1.
D. E. F.
Each hanger wire should fall in line with
a pre-punched hanger hole. Because
the tees are curved, the space between
hanger wires will vary along the main tee.
Establish where each hanger wire will
be attached.
Main tees may require field punched
hanger holes several inches from their
termination to allow adequate support
and leveling capabilities
Once you have established where each
hanger wire should go, pre-hang the first
row of hanger wire.
Find a corner starting point based on
locations specified on your architect’s
plans or by scaling from a working
drawing.
1. 1. 1.
G. H. I.
It’s best to start at a point near a wall
or column that can be used for reference
and support.
Refer to the bill of material and ribbon
drawing and locate the appropriate
flush-cut main tee to start the first row
of main tees.
For your reference, part ID codes are
listed on the ribbon drawing and stamped
on the ends of each main tee.
One-Directional Cu r v a t u r a
Installation Instructions
Page 3 of 12
Step 1: Install First Row
of Main Tees
Step 1:
Install First Row
of Main Tees
(continued)
J. K. L.
Install the flush-cut end of the main tee.
M. N.
Tie hanger wires through every other set
of punched holes along the main tee—
roughly, about 4 feet apart.
Each main tee has sets of punched holes
spaced about 2 feet apart.
Remember…
Extra hanger holes are provided to help
work around obstructions. Also, keep
in mind that the space between any two
hanger wires must not exceed 4 feet.
Hang the flush-cut end of the main tee from
the ceiling at the elevation and location
specified on your architect’s plans or by
scaling from a working drawing.
Install the next main tee segment.
Refer to the ribbon drawing to select
the correct segment.
O. P. Q.
Connect this tee to the first tee by
using a main tee splice.
Insert the clip. Then, bend the tabs inward.
One-Directional Cu r v a t u r a
Installation Instructions
Page 4 of 12
Step 1: Install First Row
of Main Tees
Step 1:
Install First Row
of Main Tees
(continued)
R.
Install main tees and hanger wires
one segment at a time until the entire
row is complete.
S.
Be sure to use the appropriate flush-cut
main tee at the end of the row as specified
on the ribbon drawing.
Remember…
The integrity and accuracy of the first
row of main tees will ultimately determine
the quality of the completed installation
so be sure to check the integrity of the
completed row.
Tip: Extra care at this point will prevent
alignment problems throughout the rest
of the installation.
T. U. V.
Examine the completed row from the side
to ensure that the hanger wires are plumb.
Wires should hang straight and plumb
within 1 in 6, about 10 degrees. If hangers
need to be relocated, move them now.
Examine the completed row end-on. It
should be straight with no waves. If you
need to install additional hanger wires,
install them now.
W. X.
Examine the row of main tees from the
side again. The curve of one tee should
flow smoothly into the curve of the next.
If the curves are not flowing smoothly,
adjust the hanger elevations either up or
down at the joints.
It’s important that the first row of main
tees remains stable during the entire
installation process. So, as a final step
in this first part of the installation, install
temporary bracing to the ceiling or
walls, if necessary, to ensure that the
row remains straight and rigid.
Tip: If necessary, you can punch or drill
extra hanger holes into the main tee to
ensure plumb wires.
Important…
You will be using this first row of main tees
as a template for hanging subsequent
rows, so take extra care to ensure proper
wire spacing before moving on.
Stabilizer Bars Installed
Two Feet On Center
2 feet
Multi-ribbon Installation
2 feet
4 feet
One-Directional Cu r v a t u r a
Installation Instructions
Page 5 of 12
Step 2: Install a Row
of Flush-Cut Main Tees
Step 2:
Install a Row
of Flush-Cut
Main Tees
A. B. 1.
Using the first row of hanger wires as
a template, install additional rows of
hanger wires as needed, two-feet apart.
Using the first row of main tees as
a template, use string lines or a laser
to hang all the flush-cut main tees
at one end.
C. D. E.
As each flush-cut main tee is hung,
connect it to the previous row using
a termination cross tee.
Next, install the stabilizer bars. For a single ribbon installation, stabilizer
bars should be installed 2 feet on center
using all available cross tee holes.
Remember…
Feed hanger wires into the same hanger
holes as were used in the previous main
tee. This will prevent interference with the
stabilizer bars later during the installation.
Single-ribbon installation
F. G. H.
For a multi-ribbon installation, stabilizer bars
should be installed 2 feet on center along
the perimeter modules and staggered on
the inside rows.
Multi-ribbon installation Dual-ribbon installation
In a dual-ribbon installation, stabilizer bars
are installed in the cross tee slots on one
row and offset two feet on center on the
other row.
To install each stabilizer bar, bend the
stabilizer tabs in the same direction as
the offset…
…and insert the tab through the cross
One-Directional Cu r v a t u r a
Installation Instructions
Page 6 of 12
Step 2: Install a Row
of Flush Cut Main Tees
Step 2:
Install a Row
of Flush-Cut
Main Tees
(continued)
I(a). I(b). J.
tee slot from the appropriate side. Without bending the tabs, position each
stabilizer bar slightly to the right or left
of the previous stabilizer bar…
…and attach each bar using a self
K. L.
tapping screw at the pilot hole provided. Continue to install the flush-cut main
Tip: You can install additional stabilizer
bars in any row where extra support may
be needed.
tees until all of the tees are installed
at one end.
Important…
Be careful to ensure that the row of
termination cross tees remains straight
and square throughout this phase of
the installation.
Extra care at this point will prevent
alignment issues later during installation.
M.
Install temporary bracing to the ceiling
or nearby walls as necessary to assure
that the row of termination cross tees
remains straight, square, and rigid.
1.
One-Directional Cu r v a t u r a
Installation Instructions
Page 7 of 12
Step 3: Install
Remaining Grid
Step 3:
Install
Remaining
Grid
A. B. C.
Using the first row of main tees as
a template, use string lines or a laser
to install the remaining main tees.
Install the stabilizer bars according to
your specific installation as reviewed
previously.
Install termination cross tees at the
opposite ends of each row as indicated
on the ribbon drawing.
E. 1. 1.
Tightly wrap the ends of each hanger
wire to prevent them from being seen
from the side after the entire installation
is complete.
1. 1. 1.
One-Directional Cu r v a t u r a
Installation Instructions
Page 8 of 12
Step 4: Install Panels
Step 4:
Install Panels
A. B. C.
Note that some panels may be directional.
These panels will be marked on the back
and should be installed appropriately.
Insert a Cu r v a t u r a one-directional panel
into the first row by sliding it under the
stabilizer bars…
…and pulling or threading it all the way until
it butts up against the termination
cross tee.
D. E. F.
If you’re using a full panel, cut off the
upturned flange on the one end. This
will make clearance for the hold-down
tabs on the termination cross tee.
Use a screwdriver blade to bend in the
hold-down tab on the termination cross
tee and lock the panel into place.
Do not bend the hold-down tabs on the
main tees at this time.
Slide the next panel into the row…
G. H. I.
…and press a panel joint splice onto
the joint.
Repeat the process until reaching the
end of the row.
Finish the row by cutting a panel to fit
into the last opening.
One-Directional Cu r v a t u r a
Installation Instructions
Page 9 of 12
Step 4: Install Panels
Step 4:
Install Panels
(continued)
J. K. L.
Most aluminum panels can be cut using
a straight edge and a sharp drywall knife.
Make a deep score with the drywall
knife…
…and bend the panel back and forth
to break it along the score.
M. N. O.
After the entire row of panels has been
installed, bend the main tee hold-down
tabs to lock the panels against the
main tee.
Bend as many hold-down tabs as necessary to eliminate all gaps between the
panels and main tees. Be careful not to
overbend the tabs as this could damage
the panel.
If a particular joint does not lie flat against
the main tee, cut a short piece of panel
splice about 4 to 5 inches long from the
extra splices provided. Slide one end
under a nearby hold-down tab and wedge
the other end over the top of the splice.
Remember…
1. P. Q.
Once the hold-down tabs are bent, the
panel positions and grid will be locked—
be sure to inspect the installation to
ensure that the grid is square and the
panels are flat before locking.
Start the next row of panels with a cut
panel…
…so that the panel joints are staggered
from one row to the next. Repeat
this process for every other row. Panel
remnants can also be used for this.
One-Directional Cu r v a t u r a
Installation Instructions
Page 10 of 12
Step 5: Install Edge Trim
Step 5:
Install Edge
Trim
A. B.
Remove any visible temporary bracing that
may have been installed.
Follow the ribbon diagram to locate
the proper positions for each edge trim
segment.
Remember…
For ease of installation, edge trim segments
are 1/8 shorter than main tee segments.
Fascia splices and corner clips are provided
to cover the gaps.
C. D. E.
Start the installation with an appropriate
flush-cut edge trim segment…
…and apply fascia splices and corner
clips along the perimeter.
Hook them over the bottom edge of the
trim and bend the tabs over the top as
shown here.
F. G. H.
Remember, it’s easiest to install fascia
splices progressively.
Squeeze the bottom to get a snug fit
around the trim as shown here.
Then, bend the top of the splice as
shown here.
One-Directional Cu r v a t u r a
Installation Instructions
Page 11 of 12
Step 5: Install Edge Trim
Step 5:
Install Edge
Trim
(continued)
I.
Finally, screw attach each edge trim
segment by applying number-six by
three-eighths self-tapping screws in
at least two integral attachment clips
at either end.
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800 USG.4YOU
Web Site
www.usg.com
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888 874.2450
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Customer Service
800 950.3839
Note
All products described here
may not be available in all
geographic markets and are
subject to change without
notice. Consult your local
sales office or representative
for information.
Trademarks
The following are trademarks of
USG Interiors, Inc. or a related
company: C
Notice
We shall not be liable for
incidental or consequential
damages, directly or indirectly
sustained, nor for any loss
caused by application of these
goods not in accordance with
current printed instruction or
for other than intended use.
Our liability is expressly limited
to replacement of defective
goods. Any claim shall be
deemed waived unless made
in writing to us within thirty
(30) days from the date it was
or reasonably should have
been discovered.
u r v a t u r a , USG.
Safety First!
Follow good safety practices.
Read material safety data
sheets and related literature on
products before specification
and/or installation.
Manufactured by
USG Interiors, Inc.
550 West Adams Street
Chicago, IL 60661
IC402/rev. 12-03
© 2003, USG Interiors, Inc.
Printed in U.S.A.
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