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Glass-Fiber-Reinforced Plaster Fabrications
®
1. Product Name
Glass Fiber Reinforced Gypsum (GRG):
• Domes
• Column Covers
• Moldings
• Cornices
• Light and Reflector coves
• Medallions
• Custom designs
2. Manufacturer
Casting Designs, Inc.
9320 Crowley Road
Fort Worth, TX 76134-5903
(817) 551-7373
Fax: (817) 293-8644
E-mail: [email protected]
www.CastingDesignsInc.com
3. Product Description
basic Use
Casting Designs, Inc., manufactures Glass Fiber
Reinforced Gypsum (GRG) products for interior new construction and renovation projects.
The GRG product line includes domes, columns, moldings and light coves that replicate
the appearance of plaster, but are significantly lighter and more versatile. Casting
Designs has both standard and custom
designs for installation within shopping malls,
churches, universities, office buildings, upscale
residences and other architectural applications requiring strong, lightweight, flexible and
fire retardant elements.
COMPOSITION & MATERIALS
Casting Designs’ GRG products consist of
glass-fiber reinforcing and high strength alpha
hemi-hydrate gypsum cement.
sizes
Column covers are offered in the following
sizes:
• Diameters - 6" (15 cm), 8" (20 cm), 10" (25 cm), 12" (30 cm), 14" (36 cm), 16" (41 cm), 18"
(46 cm), 20" (51 cm), 22" (56 cm), 24" (61 cm),
26" (66 cm), 28" (71 cm), 30" (76 cm), 32"
(81 cm), 34" (86 cm), 36" (91 cm), 38" (97 cm),
40" (102 cm), 42" (107 cm), 44" (112 cm), 46"
(117 cm), 48" (122 cm)
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Casting Designs, Inc.
• Heights - Available up to 15' (4.6 m); columns
are stepped off at exact heights specified.
Columns exceeding 15' (4.6 m) are made in
stacking sections for field assembly
• Custom sizes are available
• Column covers are recessed for tape and
bed joints; they can be made without the
recess for vertical caulk joints
Light cove and reflector cove designs are
generally made in 8' (2.4 m) lengths, with a
tape and bed recess at each end.
Domes, cornices, molding, radius curves
and column covers are available in custom
shapes and sizes; contact Casting Designs for
additional information.
Colors
GRG products are shipped from Casting
Designs as a natural white gypsum color with
a smooth finish. Field finishing is required.
benefits
• Weighs less than traditional stone or plaster,
simplifying transport and installation
• Has superior fire retardant properties - Class A
rated
• Can be cast to a variety of detailed shapes
and sizes for increased design flexibility
• Easily finished to interior design specifications
• Provides a cost-effective, versatile design
alternative
limitations
GRG is a gypsum-based product intended for
interior use only. Do not use for areas openly
exposed to rain or high humidity or for such
wet locations as fountains or pools.
4. Technical Data
APPLICABLE STANDARDS
ASTM International (ASTM)
• ASTM C840 Standard Specification for
Application and Finishing of Gypsum Board
• ASTM D256 Standard Test Methods for
Determining the Izod Pendulum Impact
Resistance of Plastics
• ASTM D695 Standard Test Method for
Compressive Properties of Rigid Plastics
• ASTM D790 Standard Test Methods for
Flexural Properties of Unreinforced and
Reinforced Plastics and Electrical Insulating
Materials
PHYSICAL/TECHNICAL PROPERTIES
See Table 1.
Beason School of Divinity
Samford University, Birmingham, AL
5. Installation
preparatory work
Pieces will be shipped in specially built crates
and in a manner to protect against damage
and warpage. During shipment, support pieces on nonstaining, shock absorbing material.
Lift and support only at points indicated on
drawings.
Store materials indoors, in crates and on
flat, smooth and level surfaces. Avoid stacking
or leaning pieces as much as possible. Cover
and protect pieces from exposure to harmful
environmental conditions, such as excessive
dirt, moisture, surface damage or other jobsite
hazards.
Maintain consistent temperature and
humidity levels throughout storage, installation
and finishing.
METHODS
GRG pieces must be installed by experienced
workmen. Pieces must be level and plumb and
per approved shop drawings. All pieces must be
securely anchored, and joints must be finished
as shown in approved shop drawings.
Taping, Patching, Control Joints
Tape, float and sand all joints and, where
required, provide control joints according to
gypsum drywall specification.
Patch all countersunk fasteners and damage
to match interior surface.
SPEC-DATAª and MANU-SPEC ª are registered trademarks of Reed Elsevier Inc. The ten part SPEC-DATA format conforms to the editorial style
of The Construction Specifications Institute and is used with their permission. The manufacturer is responsible for technical accuracy. ©2008 Reed Construction Dataª. All Rights Reserved.
Glass-Fiber-Reinforced Plaster Fabrications
®
Casting Designs, Inc.
TABLE 1 - PHYSICAL/TECHNICAL PROPERTIES
Description
Typical Values
Glass fiber
5 - 6% by weight
Shell thickness
1/4" (6.35 mm)
± 2 lb/ft2 (32 kg/m2)
Weight
ASTM D790
Tensile strength
1358 psi (9.4 MPa)
Flexural strength
4118 psi (28.4 MPa)
ASTM D695
Compressive strength
7030 psi (48.5 MPa)
9. Technical Services
For technical assistance, including more
detailed product information, literature, test
results and assistance with project specifications, visit the www.CastingDesignsInc.com
website.
10. Filing Systems
• Reed First Sourceª
• MANU-SPECª
• Additional product information is available
from the manufacturer upon request.
ASTM D256
8.34 ft-lb/in (43.7 kJ/m2)
Impact
Humidified deflection
1/16" (1.59 mm)
Tolerances
Dimension
All directions ± 3/16" (4.76 mm)
Thickness
1/4" (6.35 mm) ± 1/8" (3.18 mm)
Warpage or bowing
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1/16" (1.6 mm)
Finishing
Painting contractors must comply with ASTM
C840 specifications, specifically with regard to
sealing.
Unfinished GRG may exhibit slight imperfections, which will be eliminated when parts are
finished using typical drywall finishing methods.
Due to the porosity differential between joint
compounds and GRG materials, the painting
contractor must properly seal all surfaces prior
to finishing.
BUILDING CODES
Installation must comply with the requirements
of all applicable local, state and federal code
jurisdictions.
6. Availability & Cost
Casting Designs’ GRG products are available
throughout the United States. To find local
representatives, contact Casting Designs or
visit the www.CastingDesignsInc.com website.
7. Warranty
Casting Designs, Inc., warrants all materials
against defect for 1 year after receipt of the
materials.
8. Maintenance
No special maintenance is required for properly installed products.
SPEC-DATAª and MANU-SPEC ª are registered trademarks of Reed Elsevier Inc. The ten part SPEC-DATA format conforms to the editorial style
of The Construction Specifications Institute and is used with their permission. The manufacturer is responsible for technical accuracy. ©2008 Reed Construction Dataª. All Rights Reserved.