DOCSLIB.ORG

Wood Structural Panels

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Wood Structural Panels Architecture 544 Wood Structures Wood Structural Panels NDS - Chapter 9 University of Michigan, Taubman College Wood Structures Slide 1 of 46 Wood Structural Panels Applications: • Roof, Floor and Wall Sheathing • Horizontal and Vertical Shearwalls / Diaphragms • Structural Components – Lumber and Plywood Beams – Stressed Skin Panels – Curved Panels – Folded Plates – Sandwich Panels • Gusset Plates – Trusses – Frame Connections • Concrete Formwork C. Robeller, TU Kaiserslautern University of Michigan, Taubman College Wood Structures Slide 2 of 46 NDS - 9.1 General 9.1.1 Scope – Wood Structural Panels • Plywood • Oriented Strand Board (OSB) • Composite Panels University of Michigan, Taubman College Wood Structures Slide 3 of 46 NDS - 9.1 General 9.1.1 Scope – Wood Structural Panels • Plywood • Oriented Strand Board (OSB) • Composite Panels University of Michigan, Taubman College Wood Structures Slide 4 of 46 NDS - 9.1 General 9.1.1 Scope – Wood Structural Panels • Plywood • Oriented Strand Board (OSB) • Composite Panels Carpentry, American Technical Publishers, 2013 University of Michigan, Taubman College Wood Structures Slide 5 of 46 Other Panels not NDS but can be APA rated Waferboard – nonveneer, larger flakes. Can be oriented or random. Precursor to OSB but generally inferior. Replaced by OSB. Particleboard – nonveneer, small, non- oriented particles – not wafers or strands. Susceptible to water damage. University of Michigan, Taubman College Wood Structures Slide 6 of 46 Plywood vs. OSB Plywood OSB higher impact resistance stronger in shear better moisture resistance more cost effective (cheaper) more grades and types meets most code requirements University of Michigan, Taubman College Wood Structures Slide 7 of 46 NDS Adjustment Factors dry condition is M.C. < 16% University of Michigan, Taubman College Wood Structures Slide 8 of 46 Adjustment Factors dry condition is M.C. < 16% APA D510C 2012 University of Michigan, Taubman College Wood Structures Slide 9 of 46 Panel Size Factor NDS University of Michigan, Taubman College Wood Structures Slide 10 of 46 Other Considerations a NDS b University of Michigan, Taubman College Wood Structures Slide 11 of 46 Shear NDS University of Michigan, Taubman College Wood Structures Slide 12 of 46 Specification APA E30 Engineered Wood Construction Guide APA D510 Panel Design Guide University of Michigan, Taubman College Wood Structures Slide 13 of 46 Plywood Composition • peeled as continuous sheets of veneer • cut to size • defects cut out and patched by grade • layup with odd layers and cross grain – each veneer is a ply – a layer may have 1 or more plys – each layer is cross laminated – Face – top/outside ply – Back – bottom/inside ply – Crossband – inner layer(s) 90° to face/back – Center – inner layer(s) parallel with face/back • glued and pressed • finished (sanding levels) • nominal dimension: 4’ x 8’ – special sizes 4’ x 10’ or 4’ x 12’ • tolerance 0” to 1/8” undersized • thickness generally 1/32 undersize University of Michigan, Taubman College Wood Structures Slide 14 of 46 Layers and Plys APA D510 University of Michigan, Taubman College Wood Structures Slide 15 of 46 Span Direction strong direction vs. weak direction University of Michigan, Taubman College Wood Structures Slide 16 of 46 Species Classification Groups by strength • 1 – 4 are structural • group 1 is strongest • Structural 1 has group 1 all plys • group 4 is weakest • group 5 is not rated APA D510 University of Michigan, Taubman College Wood Structures Slide 17 of 46 Veneer Grades APA D510 A and C are structurally similar (C can upgrade to A) B and D are structurally similar (D can upgrade to B) A and B are usually face veneers, C and D are inner University of Michigan, Taubman College Wood Structures Slide 18 of 46 Exposure Classification • Exterior – Waterproof Glue – Permanently exposed to weather – C-grade or better • Exposure 1 – Waterproof glue – Temporarily in weather – D or C grade • Exposure 2 – IMG – Intermediate glue – Intermediate resistance to moisture – High humidity • Interior – Permanently protected – Short periods of 90% humidity APA D510 University of Michigan, Taubman College Wood Structures Slide 19 of 46 Types of Standards Product Standard (PS 1) • original standard • originally prescriptive, but now also performance • plywood only Performance Standard (PS 2) • newer type • performance based • all panel types – OSB, plywood, composite, etc. University of Michigan, Taubman College Wood Structures Slide 20 of 46 Typical Trademarks Typical APA marks showing: • exposure • grade and group • class or span rating • bond classification • thickness • performance catagory APA L870 PS 1-19 University of Michigan, Taubman College Wood Structures Slide 21 of 46 Typical Trademarks 2 - Span Rating: roof span / floor span APA D510 University of Michigan, Taubman College Wood Structures Slide 22 of 46 Typical Trademarks APA Y510 Plywood Design Specification University of Michigan, Taubman College Wood Structures Slide 23 of 46 Design Aids NDS – 2018 Manual APA – Q225 University of Michigan, Taubman College Wood Structures Slide 24 of 46 Design Aids APA – Q225 University of Michigan, Taubman College Wood Structures Slide 25 of 46 Design Aids NDS - Manual University of Michigan, Taubman College Wood Structures Slide 26 of 46 Section Properties APA D510 University of Michigan, Taubman College Wood Structures Slide 27 of 46 Span Rating Chart APA D510 University of Michigan, Taubman College Wood Structures Slide 28 of 46 Span Rating Chart (continued) APA D510 University of Michigan, Taubman College Wood Structures Slide 29 of 46 Capacity Equations Bending Note the dimensions as given APA D510 University of Michigan, Taubman College Wood Structures Slide 30 of 46 Capacity Equations Shear Note the dimensions as given APA D510 University of Michigan, Taubman College Wood Structures Slide 31 of 46 Capacity Equations Deflection Note the dimensions as given APA D510 University of Michigan, Taubman College Wood Structures Slide 32 of 46 Roof Sheathing Design Example Given: flat roof framed as shown roof joists at 24” o.c. D = 8 psf Lr = 20 psf deflection limits: Lr = L/240 total = L/180 Find: panel specifications University of Michigan, Taubman College Wood Structures Slide 33 of 46 Roof Sheathing Example Classification: exterior (protected) sheathing could use either also either OSB or plywood NDS - Manual University of Michigan, Taubman College Wood Structures Slide 34 of 46 Roof Sheathing Example Check capacities: span rating for roof at 24” o.c. = 24/0 deflection limits: Lr = 20 psf L/240 L/240 = 43 psf OK Total = 28 psf L/180 L/180 = 57 psf OK bending: psf (CD) 52 (1.25) = 65 psf OK shear: psf (CD) 138 (1.25) = 172psf OK APA – Q225 University of Michigan, Taubman College Wood Structures Slide 35 of 46 Roof Sheathing Example Performance Category (thickness) for 24/0 four sizes are available with 3/8 being predominant. So, try 3/8 APA – D510 University of Michigan, Taubman College Wood Structures Slide 36 of 46 Roof Sheathing Example Edge support criteria: 0/24 without edge support can only span 20” (19.2). So either use: 0/24 x 3/8 with edge support or 0/24 x 15/32 (or 1/2) without edge support or 24/16 x 7/16 without edge support NDS - Manual University of Michigan, Taubman College Wood Structures Slide 37 of 46 Roof Sheathing Example Nailing criteria: 8d nails at 6” and 12” o.c. panel edge gap: 1/8” NDS - Manual University of Michigan, Taubman College Wood Structures Slide 38 of 46 Roof Sheathing University of Michigan, Taubman College Wood Structures Slide 39 of 46 Floor Sheathing layers: • subfloor • underlayment • combined subfloor-underlayment floor types: subfloor + underlayment subfloor + APA rated sheathing (e.g. wood flooring) combined subfloor-underlayment + carpet University of Michigan, Taubman College Wood Structures Slide 40 of 46 Floor Sheathing load tables and nailing schedules in APA – E30 limits usually set by point load deflection (person) University of Michigan, Taubman College Wood Structures Slide 41 of 46 Floor Capacity example Find the floor capacity of the given sheathing use L/360 deflection limit NDS University of Michigan, Taubman College Wood Structures Slide 42 of 46 Floor Capacity Table 8 example 5-ply APA D510 or NDS Manual M9.2-1 to 4 University of Michigan, Taubman College Wood Structures Slide 43of 46 Floor Capacity example APA D510 University of Michigan, Taubman College Wood Structures Slide 44 of 46 Wall Sheathing and Siding Types: 1. Separate Sheathing + Siding – spanning strong or weak direction – blocking required for shear wall – nailing by APA chart – typ. 6d at 6”o.c. edges and 12”o.c. blocking 2. Combined as one panel – usually with texture or grooved – installed vertically (8 ft vertical) – APA Rated Siding – 303 – usually shiplap edges University of Michigan, Taubman College Wood Structures Slide 45 of 46 Wall Sheathing and Siding Joint details for combined type (single layer) University of Michigan, Taubman College Wood Structures Slide 46 of 46.
Load more

Recommended publications
  • DIY Shiplap Building Guide
    DIY SHIPLAP HEADBOARD BUILDING PLANS: Description: Complete Building Guide for a king size shiplap headboard Tools Needed: Jig Saw Skill saw Finish Nailer Measuring Tape Marking Pencil 1/16 tile spacers Twine and nail Materials: (9) 1"x6"x8' Pine Board (1) 4'x8' 1/4 Piece of Plywood Liquid Nails or Construction Adhesive 1.5" Finish Nails 1" Wood Screws Directions: 1. Cut the plywood to size. You want your plywood to be 48" x 80". The 4 foot side will be fine but you will have to cut the 8' side down to 80". Measure over to 80", mark with your pencil, and cut using your skill saw. 2. Now you need to cut the arched area on the piece of plywood. To get a precise arch you can use the nail and twine method. See more at: www.plumprettydecoranddesign.com Page "1 of "4 Here's how: A. First measure over 40" and mark. B. From that mark measure down 20" and place your nail. C. Using a piece of twine and your pencil, attach the twine to the nail and your pencil with a 20" gap between the two. D. Now stretch out the twine and mark your circle. Creating a circle with a 40" diameter. E. Next create a pivot point with a board. Meaning use a stationary point that can not move (a clamped board) and place your nail in. This time using a piece of twin and your pencil, attach the twine to the nail and your pencil with a 40" gap between the two.
    [Show full text]
  • Section 061053 - Miscellaneous Rough Carpentry
    SECTION 061053 - MISCELLANEOUS ROUGH CARPENTRY PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. This Section includes the following: 1. Wood framing, blocking, and nailers 2. Wood battens, shims, and furring (for wall panel attachment). 3. Plywood sheathing for miscellaneous structures and replacement of deteriorated roof sheathing. B. Related Sections include the following: 1. Section 075216 "SBS Modified Bituminous Membrane Roofing" for adhesively applied 2-ply, SBS bituminous membrane roofing, with self-adhered base ply sheet. 2. Section 076200 "Sheet Metal Flashing and Trim" for installing sheet metal flashing and trim integral with roofing. 1.3 DEFINITIONS A. Dimension Lumber: Lumber of 2-inches nominal or greater but less than 5-inches nominal in least dimension. B. Lumber grading agencies, and the abbreviations used to reference them, include the following: 1. NLGA: National Lumber Grades Authority. 2. WCLIB: West Coast Lumber Inspection Bureau. 3. WWPA: Western Wood Products Association. 1.4 QUALITY ASSURANCE A. Testing Agency Qualifications: For testing agency providing classification marking for fire- retardant treated material, an inspection agency acceptable to authorities having jurisdiction that periodically performs inspections to verify that the material bearing the classification marking is representative of the material tested. PRSD – Thompson Elementary School Roof Replacement 061053 – MISCELLANEOUS ROUGH CARPENTRY July, 2012 Page 1 of 7 B. Forest Certification: For the following wood products, provide materials produced from wood obtained from forests certified by an FSC-accredited certification body to comply with FSC 1.2, "Principles and Criteria": 1.
    [Show full text]
  • Historic Context Statement City of Benicia February 2011 Benicia, CA
    Historic Context Statement City of Benicia February 2011 Benicia, CA Prepared for City of Benicia Department of Public Works & Community Development Prepared by page & turnbull, inc. 1000 Sansome Street, Ste. 200, San Francisco CA 94111 415.362.5154 / www.page-turnbull.com Benicia Historic Context Statement FOREWORD “Benicia is a very pretty place; the situation is well chosen, the land gradually sloping back from the water, with ample space for the spread of the town. The anchorage is excellent, vessels of the largest size being able to tie so near shore as to land goods without lightering. The back country, including the Napa and Sonoma Valleys, is one of the finest agriculture districts in California. Notwithstanding these advantages, Benicia must always remain inferior in commercial advantages, both to San Francisco and Sacramento City.”1 So wrote Bayard Taylor in 1850, less than three years after Benicia’s founding, and another three years before the city would—at least briefly—serve as the capital of California. In the century that followed, Taylor’s assessment was echoed by many authors—that although Benicia had all the ingredients for a great metropolis, it was destined to remain in the shadow of others. Yet these assessments only tell a half truth. While Benicia never became the great commercial center envisioned by its founders, its role in Northern California history is nevertheless one that far outstrips the scale of its geography or the number of its citizens. Benicia gave rise to the first large industrial works in California, hosted the largest train ferries ever constructed, and housed the West Coast’s primary ordnance facility for over 100 years.
    [Show full text]
  • UFGS 06 10 00 Rough Carpentry
    ************************************************************************** USACE / NAVFAC / AFCEC / NASA UFGS-06 10 00 (August 2016) Change 2 - 11/18 ------------------------------------ Preparing Activity: NAVFAC Superseding UFGS-06 10 00 (February 2012) UNIFIED FACILITIES GUIDE SPECIFICATIONS References are in agreement with UMRL dated July 2021 ************************************************************************** SECTION TABLE OF CONTENTS DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES SECTION 06 10 00 ROUGH CARPENTRY 08/16, CHG 2: 11/18 PART 1 GENERAL 1.1 REFERENCES 1.2 SUBMITTALS 1.3 DELIVERY AND STORAGE 1.4 GRADING AND MARKING 1.4.1 Lumber 1.4.2 Structural Glued Laminated Timber 1.4.3 Plywood 1.4.4 Structural-Use and OSB Panels 1.4.5 Preservative-Treated Lumber and Plywood 1.4.6 Fire-Retardant Treated Lumber 1.4.7 Hardboard, Gypsum Board, and Fiberboard 1.4.8 Plastic Lumber 1.5 SIZES AND SURFACING 1.6 MOISTURE CONTENT 1.7 PRESERVATIVE TREATMENT 1.7.1 Existing Structures 1.7.2 New Construction 1.8 FIRE-RETARDANT TREATMENT 1.9 QUALITY ASSURANCE 1.9.1 Drawing Requirements 1.9.2 Data Required 1.9.3 Humidity Requirements 1.9.4 Plastic Lumber Performance 1.10 ENVIRONMENTAL REQUIREMENTS 1.11 CERTIFICATIONS 1.11.1 Certified Wood Grades 1.11.2 Certified Sustainably Harvested Wood 1.11.3 Indoor Air Quality Certifications 1.11.3.1 Adhesives and Sealants 1.11.3.2 Composite Wood, Wood Structural Panel and Agrifiber Products SECTION 06 10 00 Page 1 PART 2 PRODUCTS 2.1 MATERIALS 2.1.1 Virgin Lumber 2.1.2 Salvaged Lumber 2.1.3 Recovered Lumber
    [Show full text]
  • Download This Article in PDF Format
    E3S Web of Conferences 116, 00047 (2019) https://doi.org/10.1051/e3sconf/201911600047 ASEE19 Recognition of emission from the wood based products waste combustion using differential ion mobility spectrometry Monika Maciejewska1,*, Andrzej Szczurek1, and Żaneta Zajiczek1 1Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland Abstract. This work was focussed on the recognition of the emission of volatile compounds resulting from the combustion of engineered wood products waste. This kind of waste is broadly used for heating purposes in an unauthorised way, giving rise to unorganised emissions. The recognition of such events is very difficult due to the complexity of the produced gas mixture. We proposed to apply differential ion mobility spectrometry (DMS). This is a promising technique in terms of complex gas mixtures measurements. The recognition was based on the measurements of ambient air in the vicinity of the emission source and classification. The ensemble of classification trees was chosen as the classier. The obtained results showed that volatile compounds resulting from the combustion of wood based boards waste produced the distinctive DMS spectra, which could be used as the basis for the effective recognition. We achieved almost 100 % successful recognition of: 1) ambient air which contained volatile compounds resulting from OSB board waste combustion, 2) ambient air which contained volatile compounds resulting from MDF board waste combustion, and 3) ambient air, which was did not contain volatile compounds of this kind. The presented results have a considerable practical value. The DMS spectrometer was successfully applied to recognize wood-based boards waste combustion in field conditions.
    [Show full text]
  • GLOSSARY for WOOD BASED PANEL PRODUCTS (The Text Contains More Common Panel Terms.)
    GLOSSARY FOR WOOD BASED PANEL PRODUCTS (The text contains more common panel terms.) AIS - Abbreviation for asphalt impregnated Glulam - Short for glued laminated beam. These sheathing. A fibreboard product used for exterior are made of several layers of “lumber” glued wall sheathing. It contains asphalt mixed into the together in layers to form one structural piece. fibres to assist in improving weatherability. Interior Type - Moisture resistant glue is used to Butt Joint - The joint formed when two panels make this plywood, rather than 100% exterior meet but do not overlap. glue. Interior type also permits lower grade veneers. Chamfer - The flat surface left when cutting off the square edge of a panel or lumber. Lumber Core - The inner part of a wood veneered product that has lumber strips rather Cleaned and Sized - A light surface mechanical than more plywood veneers. process that removes material form the surface to provide an even surface and a panel of Non-certified - Plywood not certified by an uniform thickness. accepted agency as meeting the appropriate standards. Non-certified plywood is not accepted Composite - Made up of several items. by building codes and some other organizations. Panels may bear the mark of the manufacturer, Core - In a 3-ply panel, the innermost part but this is not a substitute for an accepted contained between the surfaces. In 5-ply, the certifying agency grade stamp. innermost ply contained between the cross bands. O & ES - Abbreviation for oiled and edge sealed, a process done to plywood concrete Crossband - The core veneers at right angles to form panels.
    [Show full text]
  • Creating a Wood Accent Wall Recommended Products
    Creating A Wood Accent Wall Recommended Products When Tonnie eradiating his Primavera payings not unresponsively enough, is Giovanne hydropathical? Transmarine Brett unhelm some toolrooms after irremediable Ruddie twists suavely. Ordinate Constantine scythes: he singularized his intake sportively and toploftily. The accent color creates a fireplace on this manhattan guest room creating the slip covers. Although Elmer's Glue are the weakest glue hold the sanded results Super Glue under the weakest Glue onto the non-sanded results and Tacky Glue being the strongest glue overall. For a metal applications and cleat will do this at benjamin moore white to add a tighter budget friendly decor styling tips, creating a wood accent wall. Add wood accent wall a room they so be. How to plum a Decorative Wood Wall being Less than 200 YouTube. How you Save Money was Doing to Yourself! A axe of Glues California Science & Engineering Fair. The UFP-Edge Rustic Collection is holding for lease next reclaimed wood project. Buy Real Weathered Wood Planks for walls Rustic Reclaimed barn wood paneling. Does wild can make life feel claustrophobic at the mere mention make it. My dear is Erin and I with a DIY nut. This gap then recommend products, create a sound investment with screws used for awesome jacket has a balance in any home to choose a complimentary consultation. My accent wall product, products purchased through and. Instead form a shiplap accent wall table will allow your wood this stand erect without. Get coordinating colors then preview them in you room image. And create your home products that rustic look that skinny section off center of woods they stand alone.
    [Show full text]
  • 06 10 00 --- Rough Carpentry
    DESIGN AND CONSTRUCTION GUIDELINES AND STANDARDS DIVISION 6 WOODS & PLASTICS 06 10 00 • ROUGH CARPENTRY SECTION INCLUDES Dimensional Wood Framing Sheathing Prefabricated Trusses Wood Blocking Engineered Wood Framing Termite Shield RELATED SECTIONS 03 30 00 Concrete 06 20 00 Finish Carpentry 06 50 00 Structural Plastics & Composites 06 65 00 Plastic and Composite Trim 07 62 00 Sheet Metal Trim & Flashing ABBREVIATIONS-TESTING, CERTIFYING AND GRADING AGENCIES AITC- American Institute of Timber Construction www.aitc-glulam.org ALSC- American Lumber Standards Committee www.alsc.org ANSI- American National Standards Institute www.ansi.org APA- The Engineered Wood Association, (formerly American Plywood Association) www.apawood.org AWPA- American Wood Protection Association www.awpa.com CSA- Canadian Standards Association www.csa.ca FSC- Forest Stewardship Council www.fscus.org NIST- National Institute for Standards and Technology www.nist.gov SFI-Sustainable Forest Initiative www.sfiprogram.org TPI- Truss Plate Institute www.tpint.org LOAD CALCULATIONS DESIGN Calculate loads and specify the fiber stress for lumber. Avoid over-designing that will result in unnecessarily high material costs. Spruce, Pine or Fir should be adequate for most conditions; provide a rationale for any other species. ENVIRONMENTAL ISSUES PRODUCTS Use of wood from well-managed forests is preferred. Specify one or more of the following standards: Forest Stewardship Council (FSC); Sustainable Forest Initiative (SFI); or Canadian Standards Association (CSA). Using certified wood encourages a well-managed forest industry. Look for engineered wood products with certified wood content, recycled or recovered wood, and/or products that are produced within 500 miles of the project site. The use of engineered wood should be evaluated on R 06 10 00 ROUGH CARPENTRY……….
    [Show full text]
  • TECO Design and Application Guide Is Divided Into Four Sections
    Structural Design and Plywood Application Guide INTRODUCTION Plywood as we know it has been produced since early in the 20th century. It has been in widespread use as sheathing in residential and commercial construction for well over 50 years and has developed a reputation as a premium panel product for both commodity and specialty applications. Structural plywood products give architects, engineers, designers, and builders a broad array of choices for use as subfloors, combination floors (i.e. subfloor and underlayment), wall and roof sheathing. Besides the very important function of supporting, resisting and transferring loads to the main force resisting elements of the building, plywood panels provide an excellent base for many types of finished flooring and provide a flat, solid base upon which the exterior wall cladding and roofing can be applied. This TECO Design and Application Guide is divided into four sections. Section 1 identifies some of the basics in selecting, handling, and storing plywood. Section 2 provides specific details regarding the application of plywood in single or multilayer floor systems, while Section 3 provides similar information for plywood used as wall and roof sheathing. Section 4 provides information on various performance issues concerning plywood. The information provided in this guide is based on standard industry practice. Users of structural-use panels should always consult the local building code and information provided by the panel manufacturer for more specific requirements and recommendations.
    [Show full text]
  • A-Lign Technical Manual – Vertical Shiplap Weatherboard
    A-lign Technical Manual – Vertical Shiplap Weatherboard High Moisture Protection System Solution Fast Install & Less Waste From Renewable Wood Appraisal No. 929 []2017 Primed & Undercoated BRANZ Appraised From Renewable Wood NZBC Compliant claymark.co.nz A-lign® by Claymark aligns natural sustainable timber to modern design needs – combining striking good looks with guaranteed high performance. Renewable natural pine The NZ radiata pine used in the A-lign Vertical Once finger-jointed they form products Shiplap timber cladding system solution is that exceed the pine’s original physical and from renewable and sustainable plantation structural characteristics by over 400%. resources. This makes it a brilliant natural ‘environmentally It is a remarkably versatile timber renowned friendly’ construction choice over alternative for exceptional machining properties, durability building materials made from non-renewable and lightness. fossil fuels. Branz Impact Test Independently assessed Impact resistance is a key criteria for cladding A BRANZ Appraisal is a comprehensive materials being used in the construction of independent assessment of building products Appraisal No. 929 []2017 schools and similar light commercial buildings and systems for fitness for purpose and not exceeding 10 metres in height. To meet Building Code compliance. regulatory and specifier requirements, A-lign The A-lign Vertical Shiplap timber cladding Vertical Shiplap timber weatherboard (18mm system solution has been vigorously assessed thick) were subjected to hard body high from manufacturing processes, through impact resistance tests performed by BRANZ. to fitness for purpose, durability, weather- High density fibre cement weatherboard tightness performance and structural capability (16mm thick) were also included in over a drained and vented cavity.
    [Show full text]
  • Rough Carpentry
    SECTION 06112 ROUGH CARPENTRY PART 1 – GENERAL 1.01 REFERENCES A. APA (American Plywood Association) B. AWPA (American Wood Preservers Association) Book of Standards C. WCLIB (West Coast Lumber Inspection Bureau) D. WWPA (Western Wood Products Association) E. Structural Notes 1.02 DELIVERY, STORAGE, AND PROTECTION A. See Section 01600 – Material and Equipment: Transport, handle, store and protect products. 1.03 COORDINATION A. Coordinate and provide solid blocking for wall and ceiling mounted items. B. Coordinate sequencing and installation of gypsum wallboard for firewall and ceiling assemblies. 1.04 ALTERNATES A. See Section 01030 for bidding alternates affecting the work of this Section. 1.05 COLORS A. Colors are specified in Colors/Materials Schedule. 1.06 SUSTAINABLE BUILDING REQUIREMENTS A. See Section 01011 for sustainable building requirements affecting the work of this Section. PART 2 – PRODUCTS 2.01 LUMBER MATERIALS A. Lumber Grading Rules: WCLIB or WWPA. B. Maximum Moisture Content: 19%. 2.02 ACCESSORIES A. Nail Fasteners: See Structural General Notes; use hot-dipped galvanized steel (American or Canadian manufacture). B. Joist Hangers and Framing Connectors: Galvanized steel, sized to suit loads, joints and framing conditions; Simpson, Bowman Morton Manufacturing & Machine, Seattle, WA or approved. Refer to Structural General Notes. C. Anchor bolts, Bolts, Nuts, and Washers: Refer to Structural General Notes. Non- structural anchor bolts shall conform to ASTM A307, hot-dipped galvanized at exterior locations or where exposed to exterior environment. D. Water resistant Barrier Building Paper: No. 15 Asphalt Felt. E. Metal Flashing at Openings: 24 gauge stainless steel. 2.03 WOOD TREATMENT A. Wood Preservative (Pressure Treatment): AWPA Treatment LP-2, C2 for lumber, C9 for plywood.
    [Show full text]
  • Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress
    Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress September 16, 2021 Congressional Research Service https://crsreports.congress.gov RL32665 Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress Summary The current and planned size and composition of the Navy, the annual rate of Navy ship procurement, the prospective affordability of the Navy’s shipbuilding plans, and the capacity of the U.S. shipbuilding industry to execute the Navy’s shipbuilding plans have been oversight matters for the congressional defense committees for many years. In December 2016, the Navy released a force-structure goal that calls for achieving and maintaining a fleet of 355 ships of certain types and numbers. The 355-ship goal was made U.S. policy by Section 1025 of the FY2018 National Defense Authorization Act (H.R. 2810/P.L. 115- 91 of December 12, 2017). The Navy and the Department of Defense (DOD) have been working since 2019 to develop a successor for the 355-ship force-level goal. The new goal is expected to introduce a new, more distributed fleet architecture featuring a smaller proportion of larger ships, a larger proportion of smaller ships, and a new third tier of large unmanned vehicles (UVs). On June 17, 2021, the Navy released a long-range Navy shipbuilding document that presents the Biden Administration’s emerging successor to the 355-ship force-level goal. The document calls for a Navy with a more distributed fleet architecture, including 321 to 372 manned ships and 77 to 140 large UVs. A September 2021 Congressional Budget Office (CBO) report estimates that the fleet envisioned in the document would cost an average of between $25.3 billion and $32.7 billion per year in constant FY2021 dollars to procure.
    [Show full text]