Celebration Plaza - Al Shamkha Celebration Plaza (SH)

SECTION 092900 - GYPSUM BOARD

PART 1 GENERAL
1.1 SUMMARY
A. Section Includes:
1. Interior gypsum board for ceiling assemblies.
2. Finishing.
B. Refer to and comply with Section 011000 1.2 C.
C. Coordination: Coordinate the works to ensure proper execution. Examine Contract documents for requirements that
directly affect or are affected by Work of this Section. Related documents include, but are not limited to:
1. Design Drawings and general provisions of the Contract, including Project-wide Division 01, apply to this Section.
1.2 COMPLIANCE
A. General:
1. Procurement Route: Traditional.
2. Deliver and install this element of the works in compliance with the Design Drawings.
3. Use the reference codes and accompanying descriptions listed on the System Reference Sheet (SRS) to identify
materials, products, systems and components, when completing the Detailed Design.
1.3 SUSTAINABLE BUILDING REQUIREMENTS
A. Sustainability Submittals:
1. In compliance with Section 018113 - Sustainable Design Requirements.
1.4 SYSTEM DESCRIPTION
A. Type CLG-101 Suspended Plasterboard Ceiling System - MR
1. Description: Mositure resistant plasterboard lining fixed to suspended metal support system, as the Design
Drawings.
2. Preferred suppler/ vendor: Gypsemna, UAE.
3. Alternative supplier/ vendor:
a. Second: To be agreed by the Engineer.
b. Third: To be agreed by the Engineer.
4. Specific performance:
a. Fire rating: No target rating other than that provided inherently by the system.
b. Acoustic rating: No target rating other than that provided inherently by the system.
5. Support framing: Suspended metal support framing.
6. System thickness: As the Design Drawings.
7. Insulation (within void), where shown on the Design Drawings:
a. Type: Mineral wool.
b. Thickness: As the Design Drawings.
c. Density: To achieve the targeted performance requirements.
8. Linings/ facings:
a. Type: Moisture resisting plasterboard.
b. No. of layers: As the Design Drawings.
c. Thickness: As the Design Drawings.
9. Finish: Painted as Type PT-101, refer to Section 099100.
10. Perimeter trim/ shadow gap: Refer to the Design Drawings.
B. Type LIN-301 Plasterboard Lining - MR
1. Description: Mositure resistant plasterboard lining direct fixed to substrates, as the Design Drawings.
2. Preferred suppler/ vendor: Gypsemna, UAE.
3. Alternative supplier/ vendor:
a. Second: To be agreed by the Engineer.
b. Third: To be agreed by the Engineer.
4. Specific performance:
a. Fire rating: No target rating other than that provided inherently by the system.
b. Acoustic rating: No target rating other than that provided inherently by the system.
c. Duty rating: Severe.
5. Substrates: Metal sheet container and insulation, by Others.
6. System thickness: As the Design Drawings.
7. Linings/ facings to the facing side only:
a. Type: Moisture resisting plasterboard.
b. No. of layers: As the Design Drawings.

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c. Thickness: As the Design Drawings.

8. Finish: Varies, as the Design Drawings.
9. Perimeter trim/ shadow gap: Refer to the Design Drawings.
1.5 PERFORMANCE REQUIREMENTS
A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, provide materials and construction identical
to those tested in assembly indicated according to ASTM E119 by an independent testing agency.
B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical to those tested in
assembly indicated according to ASTM E90 and classified according to ASTM E413 by an independent testing agency.
C. Sound Absorption Coefficients - Perforated Acoustic Gypsum Board: The installed product to comply with the following
octave-band sound absorption coefficients when tested in compliance with ASTM C423, subject to final review and
acceptance of the Acoustic Consultant.
1. Octave Band: 125 Hz.
a. Minimum Absorption Coefficient: 0.30.
2. Octave Band: 250 Hz.
a. Minimum Absorption Coefficient: 0.55.
3. Octave Band: 500 Hz.
a. Minimum Absorption Coefficient: 0.77.
4. Octave Band: 1000 Hz.
a. Minimum Absorption Coefficient: 0.80.
5. Octave Band: 2000 Hz.
a. Minimum Absorption Coefficient: 0.65.
6. Octave Band: 4000 Hz
a. Minimum Absorption Coefficient: 0.65
1.6 SUBMITTALS
A. Product Data: For each type of product.
1. Acoustic Test Reports: Supplier to provide full test reports detailing the test method and sound absorption
coefficients, as required by the Landscape & Architecture Specification.
B. Samples: For the following products:
1. Trim Accessories: Full-size Sample in 300mm long length for each trim accessory indicated.
1.7 QUALITY ASSURANCE
A. Reference Standards And Regulatory Requirements:
1. Where there are in existence International Standards or Codes applicable to the Work of this Section, the
Contractor may choose to provide products, as accepted by the Engineer, which comply with those standards
in lieu of the standards specified herein. In either case, the recommendations and requirements of such Standards
to be considered minimum standards for the products, materials, or assemblies in question.
2. Reference to a Standard or Code to be deemed to include all other Standards and Codes referred to in the
specified Standard or Code.
3. Nothing herein to relieve Contractor of its responsibility to provide a higher standard than the relevant Code or
Standard, where that is required in order to comply with other parts of the Landscape & Architecture Specification.
B. Standards:
1. ASTM C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room
Method.
2. ASTM E795 Standard Practices for Mounting Test Specimens During Sound Absorption Tests.
C. Mockups: Refer to the Section 014339 - Prototypes, Mockups, and Benchmark Installations for specific mockup
requirements.
1.8 DELIVERY, STORAGE AND HANDLING
A. Store materials inside under cover and keep them dry and protected against weather, condensation, direct sunlight,
construction traffic, and other potential causes of damage. Stack panels flat and supported on risers on a flat platform
to prevent sagging.
1.9 FIELD CONDITIONS
A. Environmental Limitations: Comply with ASTM C840 requirements or gypsum board manufacturer's written
recommendations, whichever are more stringent.
B. Do not install paper-faced gypsum panels until installation areas are enclosed and conditioned.
C. Do not install panels that are wet, those that are moisture damaged, and those that are mold damaged.
1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, or
irregular shape.
2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination
and discoloration.
1.10 WARRANTY
A. Warranty Period: 25 years from date of Taking-Over.

PART 2 PRODUCTS
2.1 INTERIOR GYPSUM BOARD

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A. Gypsum Board, Type X: ASTM C1396/ C1396M.

1. Long Edges: Tapered.
B. Perforated Acoustic Gypsum Board: High grade, glass fiber reinforced acoustic gypsum boards with acoustic
perforation.
C. Flexible Gypsum Board: ASTM C1396/ C1396M. Manufactured to bend to fit radii and to be more flexible than standard
regular-type gypsum board of same thickness.
1. Long Edges: Tapered.
D. Flexible Cement Backerboard:
1. Core: Cementitious, water-durable.
2. Surface: Fiberglass mesh on front and back.
3. Long Edges: Tapered.
4. Panel complies with requirements of ASTM C1325 and ANSI A118.9.
5. Water Absorption: Not greater than 8% when tested for 24 hours in compliance with ASTM C473.
E. Abuse-Resistant Gypsum Board: ASTM C1629/ C1629M, Level 3.
1. Core: Type X.
2. Long Edges: Tapered.
3. Mold Resistance: ASTM D3273, score of 10 as rated according to ASTM D3274.
F. Glass-Mat Interior Gypsum Board: ASTM C1658/ C1658M. With fiberglass mat laminated to both sides. Specifically
designed for interior use.
1. Core: Type X.
2. Long Edges: Tapered.
3. Mold Resistance: ASTM D3273, score of 10 as rated according to ASTM D3274.
2.2 TRIM ACCESSORIES
A. Interior Trim: ASTM C1047.
1. Material: Galvanized or aluminum-coated steel sheet, rolled zinc, plastic, or paper-faced galvanized steel sheet.
2. Shapes:
a. Cornerbead.
b. Bullnose bead.
c. LC-Bead: J-shaped; exposed long flange receives joint compound.
d. L-Bead: L-shaped; exposed long flange receives joint compound.
e. U-Bead: J-shaped; exposed short flange does not receive joint compound.
f. Expansion (control) joint.
g. Curved-Edge Cornerbead: With notched or flexible flanges.
B. Aluminum Trim: Extruded accessories of profiles and dimensions indicated.
1. Aluminum: Alloy and temper with not less than the strength and durability properties of ASTM B221 (ASTM
B221M), Alloy 6063-T5.
2. Finish: Corrosion-resistant primer compatible with joint compound and finish materials specified.
2.3 JOINT TREATMENT MATERIALS
A. General: Comply with ASTM C475/ C475M.
B. Joint Tape:
1. Interior Gypsum Board: Paper.
2. Glass-Mat Gypsum Sheathing Board: 10-by-10 glass mesh.
C. Joint Compound for Interior Gypsum Board: For each coat use formulation that is compatible with other compounds
applied on previous or for successive coats.
1. Prefilling: At open joints and damaged surface areas, use setting-type taping compound.
2. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and trim flanges, use setting-
type taping compound.
a. Use setting-type compound for installing paper-faced metal trim accessories.
3. Fill Coat: For second coat, use setting-type, sandable topping compound.
4. Finish Coat: For third coat, use setting-type, sandable topping compound.
5. Skim Coat: For final coat of Level 5 finish, use setting-type, sandable topping compound.
2.4 AUXILIARY MATERIALS
A. General: Provide auxiliary materials that comply with referenced installation standards and manufacturer's written
recommendations.
B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering gypsum panels to continuous
substrate.
1. Laminating adhesive to have a VOC content of 50g/L or less.
C. Steel Drill Screws: ASTM C1002, unless otherwise indicated.
1. Use screws complying with ASTM C954 for fastening panels to steel members from 0.84 to 2.84mm thick.
2. For fastening cementitious backer units, use screws of type and size recommended by panel manufacturer.

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D. Sound Attenuation Blankets: ASTM C665, Type I (blankets without membrane facing) produced by combining
thermosetting resins with mineral fibers manufactured from glass, slag wool, or rock wool.
1. Fire-Resistance-Rated Assemblies: Comply with mineral-fiber requirements of assembly.
E. Acoustical Joint Sealant: Manufacturer's standard nonsag, paintable, nonstaining latex sealant complying with ASTM
C834. Product effectively reduces airborne sound transmission through perimeter joints and openings in building
construction as demonstrated by testing representative assemblies according to ASTM E90. Use fire rated acoustical
sealant where required to maintain both acoustic and fire performance. Use continuous beads of acoustical sealant
to seal assemblies at the head, sill, perimeter and penetrations of acoustically critical gypsum board construction.
1. Acoustical joint sealant to have a VOC content of 250g/L or less.
2. Use compressible closed-cell foam backer rod, as required.
F. Provide 3mm thick, self-adhesive, pliable sheet caulking pads to seal airtight the back and sides of all recessed
junction, datacom, and electrical boxes in all sound-rated assemblies.
G. Acoustical Insulation: Fiberglass batt insulation, friction fit type without integral vapor barrier membrane, thickness as
shown on the Design Drawings. Batt width to match stud spacing for self-supporting friction fit. Cut to fit irregular
spaces. Butt edges into firm contact with each other and adjoining surfaces. Cut to fit tightly around openings and
penetrations and around and behind electrical boxes. Pack additional strips of insulation around door and window
frames to fill all voids. Pack around pipes, ducts, conduits, electrical boxes and other penetrating items to fill all voids.
Install above ceilings to form a continuous layer, as shown on the Design Drawings.
H. Closed Cell Neoprene Foam: Resilient, non-hardening, heat resistant neoprene or composite neoprene/rubber blend,
minimum 30 durometer, flame spread rating of 25 or less.
I. Thermal Insulation: As specified in Section 072100 - Thermal Insulation.

PART 3 EXECUTION
3.1 EXAMINATION
A. Examine areas and substrates including welded hollow-metal frames and framing, with Installer present, for compliance
with requirements and other conditions affecting performance.
B. Examine panels before installation. Reject panels that are wet, moisture damaged, and mold damaged.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 APPLYING AND FINISHING PANELS, GENERAL
A. Comply with ASTM C840.
B. Install ceiling panels across framing to minimize the number of abutting end joints and to avoid abutting end joints in
central area of each ceiling. Stagger abutting end joints of adjacent panels not less than 1 No. framing member.
C. Install panels with face side out. Butt panels together for a light contact at edges and ends with not more than 1.5mm
of open space between panels. Do not force into place.
D. Locate edge and end joints over supports, except in ceiling applications where intermediate supports or gypsum board
back-blocking is provided behind end joints. Do not place tapered edges against cut edges or ends. Stagger vertical
joints on opposite sides of partitions. Do not make joints other than control joints at corners of framed openings.
E. Form control and expansion joints with space between edges of adjoining gypsum panels.
F. Cover both faces of support framing with gypsum panels in concealed spaces (above ceilings, etc.), except in chases
braced internally.
1. Unless concealed application is indicated or required for sound, fire, air, or smoke ratings, coverage may be
accomplished with scraps of not less than 0.7sq.m. in area.
2. Fit gypsum panels around ducts, pipes, and conduits.
G. STC-Rated Assemblies: Seal construction at perimeters, behind control joints, and at openings and penetrations with
a continuous bead of acoustical sealant. Install acoustical sealant at both faces of partitions at perimeters and through
penetrations. Comply with ASTM C919 and with manufacturer's written recommendations for locating edge trim and
closing off sound-flanking paths around or through assemblies, including sealing partitions above acoustical ceilings.
H. Install sound attenuation blankets before installing gypsum panels unless blankets are readily installed after panels
have been installed on 1 No. side.
3.3 APPLYING GYPSUM BOARD
A. Single-Layer Application:
1. On ceilings, apply gypsum panels before wall/partition board application to greatest extent possible and at right
angles to framing unless otherwise indicated.
2. Fastening Methods: Apply gypsum panels to supports with steel drill screws.
B. Multilayer Application:
1. On ceilings, apply gypsum board indicated for base layers before applying base layers on walls/ partitions; apply
face layers in same sequence. Apply base layers at right angles to framing members and offset face-layer joints
1 No. framing member, 400mm minimum, from parallel base-layer joints, unless otherwise indicated or required
by fire-resistance-rated assembly.
2. On Z-furring members, apply base layer vertically (parallel to framing) and face layer either vertically (parallel
to framing) or horizontally (perpendicular to framing) with vertical joints offset at least 1 No. furring member.
Locate edge joints of base layer over furring members.
3. Fastening Methods: Fasten base layers with screws; fasten face layers with adhesive and supplementary
fasteners.
C. Laminating to Substrate: Where gypsum panels are indicated as directly adhered to a substrate (other than studs,
joists, furring members, or base layer of gypsum board), comply with gypsum board manufacturer's written
recommendations and temporarily brace or fasten gypsum panels until fastening adhesive has set.
D. Curved Surfaces:

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1. Comply with the recommendations of Gypsum Association and the following:

a. Moisten gypsum board applying clean water to back and face. Do not allow water to puddle. Stack
moistened boards on a flat surface and allow standing for 1 hour. When applying boards to curve, fasten
one end to the framing with screws and gradually push the board against the framing and fasten, working
from fixed to free end. Do not score, or remove v- shaped strips from the surface of the gypsum board, or
otherwise reduce the surface mass or integrity, to facilitate bending of the board.
b. Install panels horizontally (perpendicular to supports) and unbroken, to extent possible, across curved
surface plus 300mm long straight sections at ends of curves and tangent to them.
c. For double-layer construction, fasten base layer to studs with screws 400mm o.c. Center gypsum board
face layer over joints in base layer, and fasten to studs with screws spaced 300mm o.c.
3.4 INSTALLING TRIM ACCESSORIES
A. General: For trim with back flanges intended for fasteners, attach to framing with same fasteners used for panels.
Otherwise, attach trim according to manufacturer's written instructions.
B. Control Joints: Install control joints according to ASTM C840 and in specific locations agreed by Engineer for visual
effect.
C. Interior Trim: Install in the following locations:
1. Cornerbead: Use at outside corners unless otherwise indicated.
2. Bullnose Bead: Use at outside corners.
3. LC-Bead: Use at exposed panel edges.
4. L-Bead: Use where indicated.
5. Curved-Edge Cornerbead: Use at curved openings.
D. Aluminum Trim: Install in locations indicated on Design Drawings.
3.5 FINISHING GYPSUM BOARD
A. General: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations, fastener heads, surface
defects, and elsewhere as required to prepare gypsum board surfaces for decoration. Promptly remove residual joint
compound from adjacent surfaces.
B. Prefill open joints and damaged surface areas.
C. Apply joint tape over gypsum board joints, except for trim products specifically indicated as not intended to receive tape.
D. Gypsum Board Finish Levels: Finish panels to levels indicated below and according to ASTM C840:
1. Level 1: Ceiling plenum areas, concealed areas, and where indicated.
2. Level 4: At panel surfaces that are exposed to view unless otherwise indicated.
a. Primer and its application to surfaces are specified in other Section 099100 - Painting.
3. Level 5: Where indicated on Design Drawings, Level 5 is suitable for surfaces receiving gloss and semigloss
enamels and other surfaces subject to severe lighting. It is considered a high-quality gypsum board finish.
a. Primer and its application to surfaces are specified in other Section 099100 - Painting.
E. Glass-Mat Faced Panels: Finish according to manufacturer's written instructions.
3.6 PROTECTION
A. Protect installed products from damage from weather, condensation, direct sunlight, construction, and other causes
during remainder of the construction period.
B. Remove and replace panels that are wet, moisture damaged, and mold damaged.
1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, or
irregular shape.
2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination
and discoloration.
3.7 WASTE MANAGEMENT
A. Separate and dispose of waste in compliance with the Project’s Waste Management Plan.
END OF SECTION

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