G.F.R.C.
GUIDE SPECIFICATIONS
SECTION 03450 - POLYMER MODIFIED GLASS REINFORCED CONCRETE
(HEREINAFTER REFERRED TO AS G.F.R.C.)
PART
1 -GENERAL
1.01
SCOPE:
Furnish all labor,
materials, equipment and services necessary or incidental to completion
of molded glass fiber reinforced concrete composites (G.F.R.C.) and
associated work in accordance with the contract documents and all
applicable buildings codes.
1.02
WORK INCLUDED:
A. Manufacturer to provide all labor, materials, equipment and related
services required for the fabrication of G.F.R.C. shapes as shown in
the contract documents. (G.F.R.C., as manufactured by CDI, is non-structural
and is to be considered as decorative only. Casting Designs, Inc., is
not responsible for structural load considerations.)
B. Installer to provide all labor, materials,
equipment and related services required for complete erection of the
G.F.R.C. and joint treatment if required.
1.03
RELATED WORK SPECIFIED ELSEWHERE:
A.
Precast concrete
B. Framing and suspension
C. Finishes
D. Joint
treatments
1.04
MANUFACTURER: Casting Designs, Inc. 9320 Crowley Road, Fort Worth, TX 76134-5903
Phone # (817) 551-7373. Fax # (817)
293-8644
1.05
SUBSTITUTIONS:
Manufacturers desiring consideration other than those
specified must submit data, samples and certified testing reports showing
compliance to all guidelines set forth in the G.F.R.C. Specification ten
days prior to bid date. Before being considered, manufacturers must: Have
five years experience in manufacturing G.F.R.C., provide photographs,
copies of certified tests, shop drawings, names and contacts for
architects and installing contractors of at least three projects. Projects
must be of similar scope.
1.06
SUBMITTALS:
A.
Samples: Submit three (3) 6" x 6" flat samples for paint and finish section.
B. Submit shop drawings for approval
showing plans, sections, details, joint treatment, reinforcing fastening
devices and relation to adjacent construction as required.
Specifier's
Option: If the G.F.R.C. scope and complexity warrant a mock-up, this section
should be included. Manufacturer to provide one full size mock-up (specify
piece to the jobsite for installation and review).
PART
2 -PRODUCTS
2.01
MATERIALS:
A.
Glass Fiber Reinforced Concrete (G.F.R.C.) to be fabricated using long
strand continuous glass fiber mats laminated with polymer modified Portland
Cement.
B. Embeds and reinforcement (if required by
manufacturerl to be galvanized steel or wood. C. G.F:R.C. members to be
stored in climate controlled conditions for sufficient period of time to
ensure product stability before being shipped.
D. All G.F:R.C. members to have identification marks, as indicated
on shop drawings, clearly displayed on backside of part.
E. Miscellaneous
materials:
- All other materials, i.e. screws, clips,
adhesives, shims, hangerwire, etc., to be per manufacturer's shop
drawings and/orjob specifications and shall be supplied by installer
of G.F.R.C. materials.
2.02
PHYSICAL PROPERTIES:
1.
Glass fiber = 5-6% by weight
2. Shell thickness =
3/8" nominal
3. Weight = 4 Ibs./ft. ±
4. Density = 115.7 Ibs./ft. 3
5. Finish = smooth
6. Tensile strength (ASTM D790) = 1110 PSI
7. Flexural strength (ASTM D790) = 2590
8. Compressive strength (ASTM D695) = 9520
9. Impact (D256) = 12.51 ft. Ibs./in.
2.03
TOLERANCES:
1.
Dimension - all directions ± 3/16"
2. Thickness 3/8" ± 1/8"
3. Warpage or bowing
1/16" per foot
PART
3 -EXECUTION
3.01
DELIVERY, STORAGE AND HANDLING:
A.
Delivery and Handling:
1. All G.F .R.C. material shipped to be placed in specially built crates,
and shipped in a manner that will protect pieces from damage, dirt,
moisture and warpage.
2. Support pieces during shipment on nonstaining shock absorbing materials.
3. Lift and support
pieces only at points indicated for attachment on drawings. Specifier's
Option: Any limitations regarding crate size, weight or jobsite
unloading facilities should be noted in this section.
B.
Storage:
1 .Once uncrated, material to be stored in an upright position on a
flat, smooth and level surface. Avoid stacking and leaning of pieces
as much as possible.
2. Cover
and protect pieces from excessive dirt, moisture, surface damage or
other jobsite hazards.
3.02
INSPECTION:
A.
Contractor shall be responsible for inspecting job conditions and providing
lines, centers, grades and marks in sufficient detail for correct installation.
B. Installer will verify all marks and checkjobsite conditions for clearance,
working space and all marks provided before commencement of installation.
Installer will also inspect all pieces prior to installation. Installer
will be responsible for repairing all installed pieces except manufacturing
defects. All discrepancies affecting the installation of the G.F.R.C.
members will be brought to the attention of the General Contractor and
resolved before installation begins.
C. General Contractor to provide
sufficient space for unloading and transport of pieces as required.
3.03
ERECTION:
A.
Safety: Installer is responsible for handling and installing the G.F .R.C.
material in a safe manner. Report any unsafe conditions immediately to the
General Contractor. B. Installer will use experienced workmen to install
the G.F .R.C. pieces. Material will be installed level and plumb and as
shown in the approved shop drawings. All pieces will be securely anchored
and joints finished as shown in the approved shop drawings.
C. The
installer will protect the G.F .R.C. members from damage by other trades
during construction and until accepted by the General Contractor . D.
After erection and acceptance of finished pieces, all damage and repair
will be the responsibility of the General Contractor.
3.04
TAPING, PATCHING AND CONTROL JOINTS:
A. Exterior tape and bed
joints are to be attached with an exterior grade construction adhesive.
Then taped and floated using fiberglass mesh tape and a bedding compound
of Portland cement, bonding agent, water and fine washed silica sand
(sand omitted in finish coats) and clean the joint to match piece
surface and shape.
B. Countersunk fasteners and damage are to be patched using same
bedding compound as used to float joints.
C. Control joints or exposed joints to be filled
with appropriate backer rod and a sealant (Dow Corning 795 or Soneborn
NP-1 or equal) capable of with standing ± 25% joint movement.
3.05
FINISHING:
See
Painting/Coating Section of Specifications. G.F.R.C. as made by Casting
Designs, Inc., is shipped as a Natural Portland/Gray color. Field
finishing is required and should be treat- ed as a masonry/concrete
product.
PART
4 -WARRANTY
A.
Manufacturer will warrant all materials against defect for one (1) year
after acceptance of materials.
B. Installer will warrant installation of installed materials for one
(1) year after acceptance of materials.
C. The manufacturer
will, at his discretion, repair or replace defective pieces subject to
approval of architect.
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