Instructions / Assembly

ManualsBrandsArmstrong Ceilings ManualsCeiling Tiles1775

adjusted for the 10 unit grid

STANDARD SUSPENDED CEILINGS

Assembly and Installation Instructions

1. GENERAL

1.1 This installation document is intended as a general application

overview, covering essential steps of a suspended ceiling installation.

This document represents standard methods as supported by the

manufacturer and are in addition to following the standards outlined

in ASTM C636. These standards represent the manufacturers

recommendations; however, all installations are subject to

requirements set forth by the authority having jurisdiction.

1.2 These instructions should be supplemented with Armstrong’s "The

20 Minute Ceiling Installer" video for examples of the installation steps,

as well as the product specic installation instructions of the product

being installed.

2. TOOLS REQUIRED

2.1 Here is a list of the most common tools needed for installing a

suspended ceiling. Required tools and materials may vary based on

job-specic conditions.

• PPE: Cut resistant gloves, safety glasses, hard hat, steel-toe boots

• Ladder(s), rolling scaffold

• Lasers: horizontal line leveling, vertical alignment, point

• String line: control/dry line

• Chalk line

• Tape measure

• Carpenter pencil

• Cordless drill with screw tips and drill bits

• Snips: metal cutting tin snips

• Rout hole punch

• Pop riveter, aluminum white pop rivets

• Lineman pliers with wire cutter

• Hammer

Summary of content (9 pages)

PAGE 1
STANDARD SUSPENDED CEILINGS Assembly and Installation Instructions 1. GENERAL 1.1 This installation document is intended as a general application overview, covering essential steps of a suspended ceiling installation. This document represents standard methods as supported by the manufacturer and are in addition to following the standards outlined in ASTM C636.
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• Screwdrivers: slotted, Phillips Armstrong Grid Main Beam • Spring clamps: 5 to 7 (small) Armstrong Grid 4' Cross Tee • Utility knife • Tool belt • Hole saw • Fasteners: wall molding attachment " 24 3. INSTALLATION LAYOUT 3.1 Grid Layout 3.1.1 There are many different grid layouts used for different products, panel sizes, or fixture integration. Below are guidelines for some of the more typical layouts. 3.1.1.1 Standard 2' x 4' (Fig 1) • Main beams spaced 48" O.C.
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.1.1.4 Plank Sizes Grid layouts for plank sizes can be constructed in three different ways. The end solution may be chosen based on the desired panel orientation in relation to the mains and load on the grid components: Armstrong Grid Main Beam Armstrong Grid 6' Cross Tee 24" 1. Main spacing equal to panel length (panel length perpendicular to mains), cross tees spanning the mains at spacing equal to panel width (Fig 4).
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• Determine the direction of the main beams and panel length. Inside Corner Wall Molding (Lower Angle) • Divide each dimension of the space (length and width) by the panel length in that direction. Ex: 28' 9" (room width) / 2' (panel width) = 14 full size panels and a 9" remainder • Divide the remainder to get even opposite border panels. If this results in border panels less than 10" you will need to add a full panel to the remainder so that the border panels are greater than 10".
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4.3 Some systems may require the use of a Structural Wall Molding, with 2" 2" additional instructions on installation requirements for this component. 5. SUSPENSION POINTS 5.1 The suspension system must be supported with hanger wire attached to the structure. 5.2 Holding power tests certified by the manufacturer of the fasteners 1" must be available upon request. 1" 12" 12" 5.3 Hanger wires should be a minimum 12-gauge galvanized, softannealed, mild steel wire. Hanger Wire 5.
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. SUSPENSION SYSTEM INSTALLATION STANDARDS Armstrong Grid 6.1 Suspension systems, whether 9/16" or 15/16", shall be installed to meet the minimum requirements established in the ASTM C636 standard, and any other requirements established by local code. Square Lay-in Panel 6.2 All grid components used must be rated to carry the appropriate load per ASTM C635 and E3090. Consult the grid product data page for load carrying capabilities. 6.
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.2 Perimeter Treatment 7.2.1 Perimeter panels less than full size shall be installed either by concealing the cut edge on the horizontal flange of a perimeter molding (option A), or by re-cutting the Tegular edge detail (option B). 7.2.
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. LIGHTING LAYOUT CONSIDERATIONS 8.1 Lighting may impact the grid layout by either requiring an H-layout/ ross-hatching or by creating single cross tee connections (unopposed c cross tees). These conditions must be addressed by following the instructions in sections 3.1.1.3 (H-Layout / Cross-Hatch) and 3.1.1.5 (Running Bond / Staggered). 8.2 All light fixtures must be independently supported unless noted otherwise in the product specific installation instructions. 8.
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.5 STAC – Single Tee Adapter Clip Used to create code compliant non-seismic and seismic C, D, E, and F off-module main beam to cross tee connections. Refer to Single Tee Adapter Clip (STAC) installation guide for full instructions (Fig 23). 9.6 Stabilizer Bars Used to maintain uniform spacing of suspension system components (main beams and cross tees) (Fig 24). Armstrong Grid 9.