ASTM C1063-99
(Specification)Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
SCOPE
1.1 This specification covers the minimum requirements for lathing and furring for the application of exterior and interior portland cement-based plaster as in Specification C 926.
1.2 Where a fire resistance rating is required for plastered assemblies and constructions, details of construction shall be in accordance with reports of fire tests of assemblies that have met the requirements of the fire rating imposed.
1.3 Where a specific degree of sound control is required for plastered assemblies and constructions, details of construction shall be in accordance with official reports of tests conducted in recognized testing laboratories in accordance with the applicable requirements of Test Method E 90.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: C 1063 – 99
Standard Specification for
Installation of Lathing and Furring to Receive Interior and
Exterior Portland Cement-Based Plaster
This standard is issued under the fixed designation C 1063; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope C 926 Specification for Application of Portland Cement-
Based Plaster
1.1 This specification covers the minimum requirements for
C 933 Specification for Welded Wire Lath
lathing and furring for the application of exterior and interior
C 954 Specification for Steel Drill Screws for the Applica-
portland cement-based plaster as in Specification C 926.
tion of Gypsum Panel Products or Metal Plastic Bases to
1.2 Where a fire resistance rating is required for plastered
Steel Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84
assemblies and constructions, details of construction shall be in
mm) in Thickness
accordance with reports of fire tests of assemblies that have
C 1002 Specification for Steel Drill Screws for the Appli-
met the requirements of the fire rating imposed.
cation of Gypsum Panel Products or Metal Plaster Bases
1.3 Where a specific degree of sound control is required for
C 1032 Specification for Woven Wire Plaster Base
plastered assemblies and constructions, details of construction
D 1784 Specification for Rigid Poly(Vinyl Chloride) (PVC)
shall be in accordance with official reports of tests conducted in
Compounds and Chlorinated Poly(Vinyl Chloride)
recognized testing laboratories in accordance with the appli-
(CPVC) Compounds
cable requirements of Test Method E 90.
D 4216 Specification for Rigid Poly(Vinyl Chloride) (PVC)
1.4 The values stated in inch-pound units are to be regarded
and Related Plastic Building Products Compounds
as the standard. The SI (metric) values given in parentheses are
E 90 Test Method for Laboratory Measurement of
approximate and are provided for information purposes only.
Airborne-Sound Transmission Loss of Building Partitions
2. Referenced Documents
3. Terminology
2.1 ASTM Standards:
3.1 Definitions—For definitions relating to Ceilings and
A 526/A 526M Specification for Steel Sheet, Zinc-Coated
Walls, see Terminology C 11.
(Galvanized) by the Hot-Dip Process, Commercial Qual-
3.2 Definitions of Terms Specific to This Standard:
ity
3.2.1 hangers—wires or steel rods or straps used to support
A 641/A 641M Specification for Zinc-Coated (Galvanized)
main runners for suspended ceilings beneath floor or roof
Carbon Steel Wire
constructions.
B 69 Specification for Rolled Zinc
3.2.2 inserts—devices embedded in concrete structural
B 221 Specification for Aluminum-Alloy Extruded Bars,
members to provide a loop or opening for attachment of
Rods, Wire, Profiles, and Tubes
hangers.
C 11 Terminology Relating to Gypsum and Related Build-
3.2.3 saddle tie—see Figs. 1 and 2.
ing Materials and Systems
3.2.4 self-furring—a metal plaster base manufactured with
C 841 Specification for Installation of Interior Lathing and
evenly-spaced indentations that hold the body of the lath
Furring
6 approximately ⁄4 in. (6.4 mm) away from solid surfaces to
C 847 Specification for Metal Lath
which it is applied.
3.2.5 framing member, n—studs, joist, runners (track),
bridging, bracing, and related accessories manufactured or
This specification is under the jurisdiction of ASTM Committee C-11 on
supplied in wood or light gage steel.
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.03 on Specifications for Application of Gypsum and Other
4. Delivery of Materials
Products in Assemblies.
Current edition approved June 10, 1999. Published August 1999. Originally
4.1 All materials shall be delivered in the original packages,
published as C 1063–86. Last previous edition C 1063–98.
Discontinued; see 1994 Annual Book of ASTM Standards, Vol 01.06.
Annual Book of ASTM Standards, Vol 01.06.
4 7
Annual Book of ASTM Standards, Vol 02.04. Annual Book of ASTM Standards, Vol 08.01.
5 8
Annual Book of ASTM Standards, Vol 02.02. Annual Book of ASTM Standards, Vol 08.02.
6 9
Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1063
6.2.2 Accessories shall be fabricated from Zinc Alloy (99 %
pure zinc), galvanized (zinc coated) steel, rigid PVC or CPVC
plastic, or anodized aluminum alloy. See Specification B 221.
(See Table 1 for minimum allowable thicknesses).
NOTE 1—The selection of an appropriate type of material for accesso-
ries shall be determined by applicable surrounding climatic and environ-
mental conditions specific to the project location, such as salt air,
industrial pollution, high moisture, or humidity.
6.2.3 Steel—Specification A 526 and shall have a G60
coating.
6.2.4 PVC Plastic—Specification D 1784 or D 4216.
6.2.5 Zinc Alloy—Specification B 69, 99 % pure zinc.
6.2.6 Thickness of base material shall be as shown in Table
FIG. 1 Saddle Tie
1.
2 2
6.2.7 Cornerite—1.75 lb/yd (0.059 kg/m ), galvanized ex-
2 2
panded metal lath, galvanized, 1.7 lb/yd (0.057 kg/m ) galva-
nized woven or welded wire fabric of 0.0410 in. (1.04 mm)
wire. When shaped for angle reinforcing, it shall have out-
standing flanges (legs) of not less than 2 in. (51 mm).
6.3 Channels—Shall be cold-formed from steel with mini-
mum 33 000 psi (228 MPa) yield strength and 0.0538 in. (1.37
mm) minimum bare steel thickness. Channel shall have a
protective coating conforming to Specification A 653–G60, or
have a protective coating with an equivalent corrosion resis-
tance for exterior applications, or shall be coated with a rust
inhibitive paint, for interior applications, and shall have the
following minimum weights in pounds per 1000 linear feet
(kg/m).
FIG. 2 Saddle Tie
Sizes, in. (mm) Weight, lb/1000 ft (kg/m) Flange Width, in. (mm)
3 1
⁄4 (19) 277 (0.412) ⁄2 (13)
1 1
1 ⁄2 (38) 414 (0.616) ⁄2 (13)
containers, or bundles bearing the brand-name and manufac- 1
2 (51) 506 (0.753) ⁄2 (13)
1 1
2 ⁄2 (64) 597 (0.888) ⁄2 (13)
turer’s (or supplier’s) identification.
NOTE 2—Channels used in areas subject to corrosive action of salt air
5. Storage of Materials
shall be hot-dipped galvanized, G60 coating.
5.1 All materials shall be kept dry. Materials shall be
6.3.1 External Corner Reinforcement—Expanded lath,
stacked off the ground, supported on a level platform, and
welded wire, or woven wire mesh bent to approximately 90°
protected from the weather and surface contamination.
used to reinforce portland cement stucco at external corners.
5.2 Materials shall be neatly stacked with care taken to
This accessory shall be fully embedded in the stucco.
avoid damage to edges, ends, or surfaces.
6.3.2 Foundation Weep Screed—Accessory used to termi-
5.3 Paper backed metal plaster bases shall be handled
nate portland cement based stucco at the bottom of exterior
carefully in delivery, storage, and erection to prevent punctur-
walls. This accessory shall have a sloped, solid, or perforated,
ing or removal of paper.
ground or screed flange to facilitate the removal of moisture
from the wall cavity and a vertical attachment flange not less
6. Materials
than 3 ⁄2 in. (89 mm) long.
6.1 Metal Plaster Bases:
6.4 Wire—As specified in Specification A 641 with a Class
6.1.1 Expanded Metal Lath—Specification C 847, galva-
I zinc coated (galvanized), soft temper steel. Wire diameters
nized.
(uncoated) specified herein correspond with United States Steel
6.1.2 Wire Laths:
Wire Gage numbers as follows:
6.1.2.1 Welded Wire Lath—Specification C 933.
6.1.2.2 Woven Wire Lath—Specification C 1032.
6.1.2.3 Paper Backed Plaster Bases—Specification C 847.
TABLE 1 Minimum Thickness of Accessories
6.2 Accessories:
Base Material, in. (mm)
6.2.1 General—All accessories shall have perforated or
Accessory
Steel Zinc Alloy P.V.C.
expanded flanges or clips shaped to permit complete embed-
ment in the plaster, to provide means for accurate alignment, Corner Beads 0.0172 (0.44) 0.0207 (0.53) 0.035 (0.89)
Casing Beads 0.0172 (0.44) 0.0207 (0.53) 0.035 (0.89)
and to secure attachment of the accessory to the underlying
Weep Screeds 0.0172 (0.44) 0.0207 (0.53) 0.050 (1.27)
surface. Accessories shall be designed to receive application of
Control Joints 0.0172 (0.44) 0.018 (0.46) 0.050 (1.27)
the specified plaster thickness.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1063
head and a 0.120 in. (3.0 mm) diameter shank. Screws used for
Wire Gage Diameter (in.)
(US Steel Wire Gage) mm
attachment to metal framing members shall be self-drilling and
No. 20 0.0348 .88
self-tapping. Screws used for attachment to wood framing
No. 19 0.0410 1.04
members shall be sharp-point.
No. 18 0.0475 1.21
No. 17 0.0540 1.37
No. 16 0.0625 1.59
7. Installation
No. 14 0.0800 2.03
No. 13 0.0915 2.32
7.1 Workmanship—Metal furring and lathing shall be
No. 12 0.1055 2.68
erected so that the finished plaster surfaces are true to line
No. 11 0.1205 3.06
(allowable tolerance of ⁄4 in. [6.4 mm] in 10 ft [3.05 m]),
No. 10 0.1350 3.43
No. 9 0.1483 3.77
level, plumb, square, or curved as required to receive the
No. 8 0.1620 4.12
specified plaster thickness.
6.5 Rod and Strap Hangers—Mild steel, zinc or cadmium 7.2 Hangers and Inserts:
plated, or protected with a rust-inhibiting paint. 7.2.1 Hangers shall be of ample length and shall conform to
6.6 Clips—Form from steel wire, Specification A 641 zinc- the requirements of Table 2 both as to size and maximum area
coated (galvanized), Specification A 641 or steel sheet, Speci- to be supported, except as modified in this section.
fication A 526, depending on use and manufacturer’s require- 7.2.2 When 1 by ⁄16-in. (25 by 4.8-mm) flat inserts and
ments. hangers are used, ⁄16-in. (11.1-mm) diameter holes shall be
6.7 Fasteners: provided on the center line at the lower end of the insert and
6.7.1 Nails—For attaching metal plaster bases to wood upper end of the hanger to permit the attachment of the hanger
supports, 0.1205-in. 11 gage (3.06-mm) diameter, ⁄16-in. (11.1- to the insert. The edge of the holes in both the inserts and the
mm) head, barbed, galvanized roofing nails or galvanized hangers shall be not less than ⁄8 in. (9.5 mm) from the ends.
common nails. 7.2.3 In concrete, hangers shall be attached to inserts
6.7.1.1 Nails for attaching metal plaster bases to solid embedded in the concrete or to other attachment devices
substrates shall be not less than ⁄4 in. (19 mm) long. designed for this purpose and able to develop full strength of
6.7.2 Screws for attaching metal plaster base shall be the hanger.
fabricated in accordance with either Specification C 954 or 7.2.4 Flat, steel hangers shall be bolted to 1 by ⁄16-in. (25 by
7 3
C 1002 and shall have a ⁄16 in. (11.1 mm) diameter pan wafer 4.8-mm) inserts with ⁄8-in. (9.5-mm) diameter round-head
1–10
TABLE 2 Allowable Support or Hanger Wire Spacing ft-in. (mm) and Cold-Rolled Channel Main Runner Spans, ft-in. (mm)
2 2
NOTE—1 in. 5 25.4 mm; 1 ft 5 0.093 m
Uniform Load 5 12 psf (0.479 kPa)
Member Size, in. Member Weight,
9,10
Span Condition Member Spacing, in. (mm)
(mm) lb/1000 ft (kg/m)
24 (610) 36 (914) 48 (1220) 60 (1520) 72 (1830)
Allowable Hanger Wire or Support Spacing, ft-in. (mm)
1 ⁄2 414 Single 3-6 (1070) 3-1 (940) 2-9 (840) 2-9 (790) 2-5 (740)
(38.1) (0.615) 2 or More 4-11 (1500) 4-2 (1270) 3-7 (1090) 3-2 (970) 2-11 (890)
2 506 Single 3-9 (1140) 3-3 (990) 3-0 (910) 2-9 (840) 2-8 (810)
(50.8) (0.753) 2 or More 5-2 (1570) 4-6 (1370) 4-1 (1240) 3-10 (1170) 3-7 (1090)
2 ⁄2 597 Single 3-11 (1190) 3-5 (1040) 3-2 (970) 2-11 (890) 2-9 (840)
(63.5) (0.888) 2 or More 5-5 (1650) 4-9 (1450) 4-4 (1320) 4.0 (1220) 3-10 (1170)
Uniform Load 5 15 psf (0.287 kPa)
Member Size, in. Member Weight,
9,10
Span Condition Member Spacing, in. (mm)
(mm) lb/1000 ft (kg/m)
24 (610) 36 (914) 48 (1220) 60 (1520) 72 (1830)
1 ⁄2 414 Single 3-3 (990) 2-10 (860) 2-7 (790) 2-4 (710) 2-2 (660)
(38.1) (0.616) 2 or More 4-6 (1370) 3-8 (1120) 3-2 (970) 2-10 (860) 2-7 (790)
2 506 Single 3-6 (1070) 3-1 (940) 2-10 (880) 2-7 (790) 2-5 (740)
(50.8) (0.753) 2 or More 4-10 (1470) 4-3 (1300) 3-10 (1170) 3-6 (1070) 3-3 (990)
2 ⁄2 597 Single 3-8 (1120) 3-3 (990) 2-11 (890) 2-9 (840) 2-7 (790)
(63.5) (0.888) 2 or More 5-0 (1520) 4-5 (1350) 4-0 (1220) 3.9 (1140) 3-6 (1070)
Allowable Spans Notes:
Bare metal thickness of cold-rolled main runners shall be not less than 0.0538 in. (1.367 mm).
Inside corner radii shall not be greater than ⁄8 in. (3.19 mm).
Spans based on upper flange of main runners laterally unbraced.
Maximum deflection limited to 1/360 of the span length.
Steel yield stress, Fy, shall be not less than 33 000 psi (228 MPa).
Uniform load 12 psf (dry density) shall be used for portland cement plaster ceilings with plaster thicknesses up to ⁄8 in. (22 mm) and 15 psf shall be used for ceil-
7 1
ings with plaster thicknesses over ⁄8 in. (22 mm) and not more than 1- ⁄4 in. (32 mm).
“2 or More” spans refers to two or more continuous, equal spans.
For the “2 or More” span condition, listed spans represent the center-to-center distance between adjacent supports.
These tables are designed for dead loads. Specific conditions such as exterior installations in high wind areas require additional engineering.
Where uplift resistance is required for suspended ceilings to resist negative forces, the architect or engineer of record shall select the method to be used.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1063
stove bolts. (See Fig. 3.)
7.2.5 The nuts of the bolts shall be drawn up tight.
NOTE 3—Hangers required to withstand upward wind pressures shall be
of a type to resist compression. Struts of formed channels shall be
permitted.
7.3 Installation of Hangers for Suspended Ceilings Under
Wood Constructions—Hangers shall be attached to supports by
any of the following methods:
7.3.1 A hole shall be drilled through the wood member not
less th
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