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Détails

The TSIB has a long rich history in wall and ceiling construction. Formerly known as the lath and plaster bureau, the Bureau’s efforts can be traced back over 100 years. As a historical education and promotion group, the bureau has had significant influence over codes, standards and best practices. The following is a short list of some notable past accomplishments from our offices:

• 1924: the Bureau publishes the first formal guide specification on interior and exterior plastering. Cities, such as Long Beach, Los Angeles and Santa Ana quickly adopted the practices and most items become part of the first Uniform Building Code of 1927.
• 1931: Publishes the "Historical Digest of Plastering"
• 1940: Publish the brochure "Sanitation Properties of Partitions". Includes more use of metal lath as a superior alternative to the wood lath commonly used as a plaster base.
• 1941: In conjunction with the Contractor’s License Board, the bureau develops the first written exam for "specialty" contractors.
• 1953: The bureau and the Federal Housing Administration (FHA) with local architects develop a new trim accessory called FHA screed. Eventually named " weepscreed", this 1953 design is virtually the same design listed in today’s International Building Code.
• 1969: The bureau published the formal guide recommendation on control joint lay-out for cement plaster. The same recommended spacing used today by ASTM.
• 1972: The California Window and Door Manufacturers Association, now called the American Architectural Manufacturers Association (AAMA) in conjunction with the plaster bureau develop a simple and effective window flashing procedure for nail flange windows.
• 1976: The Plaster and Drywall Systems Manual is published and used as a text book in many architectural schools across America.
• 1979: Two layers of Grade D paper become required over wood-based sheathing
• 1996: ASTM adopts C 1063 as a standard, control joint spacing is adopted from the 1969 guide.
• 2005: TSIB opens an office in Las Vegas
• 2008: TSIB opens an office in Phoenix
• 2009: The bureau develops the "Continuous Insulation" brochure to assist designers, code authorities and contractors in designing and installing rigid foam and cement plaster to meet energy code requirements.
• 2010: The Department of industrial Relations posts TSIB technical Bulletins on their website:
  • Bracing non load bearing partitions
  • Installing Acoustical Lay-in ceilings for Seismic Regions

The TSIB is unique as it is a not-for-profit association that is charged to the betterment of the wall and ceiling industry as a whole. TSIB assists architects and designers in selection of products and installation with best practices to insure success with their projects. TSIB provides code clarification and assists in getting approved alternates to the code to enhance projects. TSIB publishes technical data, best practices and recommendations based on experience and/or testing. The information is free to the public, specialized services and inspections may incur a service charge. The TSIB has staffed offices in Southern California, Las Vegas, and Phoenix.

TSIB is active on ASTM, CSI and other industry committees. We have staff experts in various fields to insure a wide breadth of knowledge and experience. We also have several expert consultants at our disposal to assist with various items such as:

• IBC Code compliance
• IECC Energy Code
• IGCC "Green Code"
• Title 24 ( California) compliance
• Detail review
• Specifications
• Products and assemblies
• Inspections
• Litigation support
• Water testing of mock-ups, windows or walls
• Standards for wall and ceiling construction

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