A. Fire-Test-Response Characteristics: For portland cement plaster assemblies with fire-resistance ratings, provide materials and construction identical to those tested in assembly indicated according to ASTM E 119 by an independent testing and inspecting agency acceptable to … AWCI 112, 1991 Edition, 1991 - SINGLE SOURCE DOC. Coordinate with Section 09 06 00, SCHEDULE FOR FINISHES and VA criteria for finishes. It is widely recognized as an education and technical spokesman for the industry. C1787 - 14 Standard Specification for Installation of Non Metallic Plaster Bases (Lath) Used with Portland Cement Based Plaster in Vertical Wall Applications , lath, non metallic plaster base, portland cement based plaster, ... 1.2 Where a fire resistance rating is … The sand and cement are mixed at the site in different ratios. 1. (2). Portland Cement Based, Water Resistant Exterior Stucco for Scratch and . 1.1 This specification applies to the minimum installation requirements for non metallic 4. ON FIRE-RATED PORTLAND CEMENT-BASED PLASTER ASSEMBLIES There is no abstract currently available for this document The thickness of cement plaster should not be less than 10 mm. History. 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. Finish coat plaster is permitted to be applied to interior cement plaster base coats after a 48-hour period. Scope. Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster active, Most Current Buy Now. This book lists, details and describes more than 70 hourly-rated assemblies that utilize portland cement-based plaster. 1.1 This specification applies to the minimum installation requirements for non metallic plaster bases used with portland cement based plaster in vertical wall applications. It consists of portland cement-based materials and sand mixed with water to form a workable plaster that hardens to provide a strong, durable, and tough surface. Any door in a fire resisting wall should comprise of a fire Finish the wall with a 1-inch coat of Portland cement gypsum plaster. 2 x 4 wood framing at 16" o.c. Cement-based three coat stucco systems have been providing a long-lasting, attractive cladding for buildings for over 100 years. It allows for a wide expression of aesthetics, is a cost effective finish, is durable in all types of climates (especially wet ones), and offers fire resistance. Scope. https://gharpedia.com/blog/cement-plaster-vs-gypsum-plaster Use special fiberglass rated for use in firewalls. Quikrete® Liquid Stucco - Acrylic Finish Coat (No. wood structural shear panel where occurs metal lath over 1 layer of weather resistive barrier 7/8" exterior cement plaster one hour rating per ibc table 720.1(2), item 15-1.3 1-hour exterior stucco wall see footnote m for reduction of allowable f'c. The studwork should not be less than 76mm x 50mm (3" x 2"). Sustainable Design Requirements: Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS.// B. is placed between lath and plaster 30: ... For mixture of Portland cement-sand plaster, see D-1.7.2. Portland cement plaster is an excellent choice of cladding for ceilings and soffits. Traditional portland cement plaster is a time-tested exterior finish. 2. 1.1 This specification applies to the minimum installation requirements for non metallic plaster bases used with Portland cement based plaster in vertical wall applications. 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 C926 or Specification C841.. 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 … 1. Delete between // // if not applicable to project. Details. For untested wall assemblies, procedures are presented for calculating a fire resistance rating. increased 7/8” base coat. These three coat stucco systems have stood the test of time because of their numerous advantages. 3. 2512.7 Application to Solid Backings Where applied over gypsum backing as specified in Section 2510.5 or directly to unit masonry surfaces, the second coat is permitted to be applied as soon as the first coat has attained sufficient hardness. ANS: Portland cement-based plaster, commonly called stucco, has long been and continues to be a popular choice for finishes on buildings. Key Words: balanced design, building codes, equivalent thickness, fire, fire resistance period, fire resistance rating, fire test. 1.2 RELATED WORK: //A. Up to this point, these dedicated people have been doing a pretty good job with very little support. SPEC WRITER NOTES: 1. Mount a 1 1/2-inch fiberglass barrier inside the studs. 2512.7 Application to Solid Backings Where applied over gypsum backing as specified in Section 2510.5 or directly to unit masonry surfaces, the second coat is permitted to be applied as soon as the first coat has attained sufficient hardness. Higher initial material costs than cementitious finish Q : What kind of fire rating does plaster provide? The Minnesota Lath and Plaster Bureau has promoted the industry since 1953. It is used on both internal as well as external surfaces. 1202) Portland Cement Based Color and Texture Coat Finishing Plaster . C1787-20 Standard Specification for Installation of Non Metallic Plaster Bases (Lath) Used with Portland Cement Based Plaster in Vertical Wall Applications fire resistance~ wall … Portland cement-based plaster is more than a beautiful, weather-resistant building finish-it also has excellent fire-resistive qualities. The hydraulic binders are neutral or alkaline. The effort to promote the use of portland cement stucco for fire resistance has been left to local or state-wide con-tractor association personnel. 7/8" exterior cement plaster at exterior condition min. Quikrete® Finish Coat Stucco (White – No. Cement Plaster: Cement plaster is a homogeneous mixture of Portland cement and sand with water. 1321) partitioning with a 12.5mm thickness of Portland Cement Plaster or Gypsum Plaster on each face of the studwork with joints taped, filled and timber backed. Material Costs Lower initial material costs than acrylic finish. 1201; Gray – No. Fire Resistance Contributing to 1/8 inch ( 3 mm) to required 7/8 thickness of Adds no resistance, rating achieved through portland cement plaster for fire resistance. Use cement plaster in showers and similar wet areas. Unlike walls also clad in stucco, ceilings and soffits do not require a water-resistive barrier and in most cases sheathing provides no added benefit to the system. scope: This specification covers the minimum requirements for lathing and furring for the application of exterior and interior portland cement-based plaster, as in Specifications C841 or C926. Fire Ratings of Archaic Materials and Assemblies Guideline on Fire Ratings of Archaic Materials and Assemblies Prepared for the U.S. Department of Housing and Urban Development Office of Policy Development and Research by the National Institute of Building Sciences, Washington, D.C. Finish coat plaster is permitted to be applied to interior cement plaster base coats after a 48-hour period. Brown Coat Cement Plaster Applications . Delete any other item or paragraph not applicable in the section and renumber the paragraphs. A.This section specifies lathing and portland cement based plaster //stucco//. Fire resistance ratings of several brick masonry wall assemblies tested using ASTM E119 procedures are listed. Step 4 Use steel studs and two layers of 1/2-inch Type C drywall on each side of the studs for a two-hour fire rating on an interior wall. fire protection features of portland cement-based plaster assemblies. PORTLAND CEMENT PLASTERING . Foundation Takes Action Steel framing members for attachment of plaster bases: Section 05 40 00, COLD-FORMED METAL FRAMING, and Section 09 22 16, NON-STRUCTURAL METAL FRAMING. C1787 - 14(2019) Standard Specification for Installation of Non Metallic Plaster Bases (Lath) Used with Portland Cement Based Plaster in Vertical Wall Applications , lath, non metallic plaster base, portland cement based plaster,, ... 1.2 Where a fire resistance rating is … It provides services to architects, the construction community and the public on a variety of matters relating to the plastering trades. 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