Timber Frame from Scratch” Series ~ Frequently Asked Questions ~
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Chapter 296-78 WAC, Sawmills and Woodworking
Chapter 296-78 WAC Introduction Sawmills and Woodworking Operations _________________________________________________________________________________________________________ Chapter 296-78 WAC Sawmills and Woodworking Operations (Form Number F414-010-000) This book contains rules for Safety Standards for sawmills and woodworking operations, as adopted under the Washington Industrial Safety and Health Act of 1973 (Chapter 49.17 RCW). The rules in this book are effective March 2018. A brief promulgation history, set within brackets at the end of this chapter, gives statutory authority, administrative order of promulgation, and date of adoption of filing. TO RECEIVE E-MAIL UPDATES: Sign up at https://public.govdelivery.com/accounts/WADLI/subscriber/new?topic_id=WADLI_19 TO PRINT YOUR OWN PAPER COPY OR TO VIEW THE RULE ONLINE: Go to https://www.lni.wa.gov/safety-health/safety-rules/rules-by-chapter/?chapter=78/ DOSH CONTACT INFORMATION: Physical address: 7273 Linderson Way Tumwater, WA 98501-5414 (Located off I-5 Exit 101 south of Tumwater.) Mailing address: DOSH Standards and Information PO Box 44810 Olympia, WA 98504-4810 Telephone: 1-800-423-7233 For all L&I Contact information, visit https://www.lni.wa.gov/agency/contact/ Also available on the L&I Safety & Health website: DOSH Core Rules Other General Workplace Safety & Health Rules Industry and Task-Specific Rules Proposed Rules and Hearings Newly Adopted Rules and New Rule Information DOSH Directives (DD’s) See http://www.lni.wa.gov/Safety-Health/ Chapter 296-78 WAC Table of Contents Sawmills and Woodworking Operations _________________________________________________________________________________________________________ Chapter 296-78 WAC SAFETY STANDARDS FOR SAWMILLS AND WOODWORKING OPERATIONS WAC Page WAC 296-78-500 Foreword. -
LP Solidstart LVL Technical Guide
U.S. Technical Guide L P S o l i d S t a r t LV L Technical Guide 2900Fb-2.0E Please verify availability with the LP SolidStart Engineered Wood Products distributor in your area prior to specifying these products. Introduction Designed to Outperform Traditional Lumber LP® SolidStart® Laminated Veneer Lumber (LVL) is a vast SOFTWARE FOR EASY, RELIABLE DESIGN improvement over traditional lumber. Problems that naturally occur as Our design/specification software enhances your in-house sawn lumber dries — twisting, splitting, checking, crowning and warping — design capabilities. It ofers accurate designs for a wide variety of are greatly reduced. applications with interfaces for printed output or plotted drawings. Through our distributors, we ofer component design review services THE STRENGTH IS IN THE ENGINEERING for designs using LP SolidStart Engineered Wood Products. LP SolidStart LVL is made from ultrasonically and visually graded veneers arranged in a specific pattern to maximize the strength and CODE EVALUATION stifness of the veneers and to disperse the naturally occurring LP SolidStart Laminated Veneer Lumber has been evaluated for characteristics of wood, such as knots, that can weaken a sawn lumber compliance with major US building codes. For the most current code beam. The veneers are then bonded with waterproof adhesives under reports, contact your LP SolidStart Engineered Wood Products pressure and heat. LP SolidStart LVL beams are exceptionally strong, distributor, visit LPCorp.com or for: solid and straight, making them excellent for most primary load- • ICC-ES evaluation report ESR-2403 visit www.icc-es.org carrying beam applications. • APA product report PR-L280 visit www.apawood.org LP SolidStart LVL 2900F -2.0E: AVAILABLE SIZES b FRIEND TO THE ENVIRONMENT LP SolidStart LVL 2900F -2.0E is available in a range of depths and b LP SolidStart LVL is a building material with built-in lengths, and is available in standard thicknesses of 1-3/4" and 3-1/2". -
Care and Preservation of Furniture and Wooden Objects by Louise Beck, Conservator, the Henry Ford
The Care and Preservation of Furniture and Wooden Objects by Louise Beck, Conservator, The Henry Ford. Introduction Antique furniture and wooden objects can be maintained for years of use and enjoyment provided that some basic care and attention is given to their preservation. The conservation staff at The Henry Ford have compiled the information in this fact sheet to help individuals care for their objects and collections. The first step in the care of collections is to understand and minimize or eliminate conditions that can cause damage. The second step is to follow basic guidelines for care, handling and cleaning. Types of Damage For most antique furniture owners, the desire to both utilize their collections and at the same time preserve them presents a formidable challenge. These two objectives are often at odds with each other. Improper handling/usage/display, environment, cleaning, and repair are the most common causes of damage to furniture and wooden objects. The primary cause of damage to furniture is careless handling and use, resulting in damage to surfaces or structural damage to the object. Inappropriate environment, both in terms of light and relative humidity, can lead to damage. Excessive light can accelerate the aging and degradation of finishes resulting in a cracked, brittle or "alligatored" appearance; it can also cause fading or softening of the finish. Since wood is a porous material it readily absorbs water when humidity levels are high. This absorption of moisture causes wood to swell. Conversely, wood shrinks in a dry environment. The shrinkage of wood in dry environments leads to the formation of structural cracks, lifting veneer and inlays, gaps in joints and the embrittlement of adhesives. -
Designing for Durability CONTINUING EDUCATION Strategies for Achieving Maximum Durability with Wood-Frame Construction Sponsored by Rethink Wood
EDUCATIONAL-ADVERTISEMENT Designing for Durability EDUCATION CONTINUING Strategies for achieving maximum durability with wood-frame construction Sponsored by reThink Wood rchitects specify wood for many Examples of wood buildings that have (glulam), cross laminated timber (CLT), and reasons, including cost, ease and stood for centuries exist all over the world, nail-laminated timber, along with a variety A efficiency of construction, design including the Horyu-ji temple in Ikaruga, of structural composite lumber products, are versatility, and sustainability—as well as Japan, built in the eighth century, stave enabling increased dimensional stability and its beauty and the innate appeal of nature churches in Norway, including one in Urnes strength, and greater long-span capabilities. and natural materials. Innovative new built in 1150, and many more. Today, wood These innovations are leading to taller, technologies and building systems are also is being used in a wider range of buildings highly innovative wood buildings. Examples leading to the increased use of wood as a than would have been possible even 20 years include (among others) a 10-story CLT structural material, not only in houses, ago. Next-generation lumber and mass timber apartment building in Australia, a 14-story schools, and other traditional applications, products, such as glue-laminated timber timber-frame apartment in Norway, but in larger, taller, and more visionary wood buildings. But even as the use of wood is expanding, one significant characteristic of wood buildings is often underestimated: their durability. Misperceptions still exist that buildings made of materials such as concrete or steel last longer than buildings made of wood. -
Annex 2B: OSB (Oriented Strand Board)
Panel Guide Version 4 Annex 2B: OSB (oriented strand in panels from different manufacturers; in panels from different manufacturers it is possible to obtain ratios board) of property levels in the machine- to cross-direction of Description 1.25:1 to 2.5:1, thereby emulating the ratios found in OSB is an engineered wood-based panel material in plywood. which long strands of wood are bonded together with a synthetic resin adhesive. OSB is usually composed Appearance of three layers, with the strands of the outer two layers OSB is readily identified by its larger and longer wood orientated in a particular direction, more often than strands, compared to particleboard. The orientation not in the long direction of the panel. While there is an of the surface strands is not always visually apparent, orientation, it is often hard to see because there is quite especially in small pieces of panel. The panel tends to a large degree of variability in this orientation among have a number of holes on the surface due to the overlap adjacent strands in the panels from any one production of strands, but a smoother surface can be obtained by line, as well as between panels from different producers. sanding. However, OSB will never possess the smooth- ness of surface found in fibreboards and particleboards: rather its merits lie in the field of mechanical perfor- mance which is directly related to the use of longer and larger strands of wood. OSB varies in colour from a light straw colour to a medium brown depending on species used, resin system adopted and pressing conditions employed. -
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. -
Woodworking Master
OHIO STATE UNIVERSITY EXTENSION OHIO 4-H MASTER PROJECTS 4-H 560M Woodworking Master By Doug Dill, Faculty Emeritus, Extension Educator, Ohio State University Extension, and Assistant Superintendent, Ohio State Fair 4-H Woodworking Day. Reviewed by Randall Reeder, Faculty Emeritus, Department of Food, Agricultural, and Biological Sciences, The Ohio State University The Woodworking Master project is for members who want to continue with woodworking after completing the Ohio 4-H woodworking projects (556 Measuring Up, 557 Making the Cut, 558 Nailing It Together, and 559 Finishing Up). Members of any age may complete this project, but must have completed the existing projects, must have woodworking experience comparable to what is required for other advanced-level 4-H projects, and must be able to plan and complete the project on their own with minimal supervision or assistance. NAME __________________________________________________________________________ AGE (as of January 1 of the current year): ______________________________________________ COUNTY: _______________________________________________________________________ CLUB NAME: _____________________________________________________________________ ADVISOR: _______________________________________________________________________ ohio4h.org CFAES provides research and related educational programs to clientele on a nondiscriminatory basis. For more information: go.osu.edu/cfaesdiversity. Project Guidelines 1. Plan, design, build, and evaluate at least one 6. If possible, have someone take pictures of you woodworking project. What you make should be working on your project at different stages as you different from what you can make within the progress from the beginning through completion, guidelines of other 4-H woodworking projects, or and attach copies of the photos in section 6 or in require specialized or professional-level skills to a separate project scrapbook. complete (beyond what would be expected in 7. -
Platform Frame Construction (Part 2)
STRUCTURAL TIMBER 4 ENGINEERING BULLETIN Timber frame structures – platform frame construction (part 2) Introduction Horizontal diaphragms and bracing In Timber Engineering Bulletin No. 3 (part 1 in this sub-series on platform Horizontal diaphragms in platform frame buildings are provided by the frame construction), the composition and terminology used for platform intermediate floors (with a wood-based subdeck material fixed directly to the timber frame building structures, and the structural engineering checks which joists) and the roof structure (with either a wood-based ‘sarking’ board or are required to verify the adequacy of the vertical load paths and the strength discrete diagonal bracing members) (Figure 3). These horizontal structural and stiff ness of the individual framing members, was introduced. diaphragms transfer horizontal loads acting on the building to the foundations by means of their connections to the wall panels (or vertical diaphragms). This Timber Engineering Bulletin introduces the engineering checks for overall building stability and the stability checks required for the wall diaphragms which provide shear (or racking) resistance to a platform timber frame structure. Robustness and disproportionate collapse design considerations for platform timber frame buildings are addressed in part 3 of this sub-series. Overall stability To achieve its stability, platform timber frame construction relies on the diaphragm action of floor structures to transfer horizontal forces to a distributed arrangement of loadbearing walls. The load bearing walls provide both vertical support and horizontal racking and shear resistance. Due to the presence of open-plan or asymmetric layouts or the occurrence of large openings in loadbearing walls, it may be necessary to provide other means of providing stability to the building, for example by the use of ‘portalised’ or ‘rigid’ frames or discrete braced bays as indicated in Figure 1. -
Molding-Program.Pdf
Moulding Program Conestoga offers several different moulding programs for your convenience. Minimum Maximum Lead-Time, Program Selection Species Grade Order Quantity Order Quantity Days Stock Choice 1 piece 25 pieces* 3 8 ft. Standard Profiles Non-stock Choice 1 piece None 10 10 ft. Standard Veneer Wrapped Profiles Stock Veneer 1 piece None 3 12 ft. Standard Profiles Non-stock Choice 1 piece None 10 8 ft. Non-standard and Special Order Profiles Any Choice 1 piece** None 10 12 ft. Non-standard and Special Order Profiles Any Choice 1 piece** None 10 Random Length Cabinet Framing/S4S Any Prime 100 ft. None 10 *Maximum stock order per specific profile and specie is 25 pieces. Orders exceeding 25 pieces require 10 day lead-time. **Non-standard profile orders of less than 100 lineal feet will incur a set-up charge. Solid Wood Moulding Specifications • Eight foot standard and non-standard mouldings will be shipped 94" to 97" in length. • Ten foot standard veneer wrapped moulding will be shipped 118" to 122" in length. • Twelve foot standard and non-standard mouldings will be shipped 142" to 146" in length. • Natural specie characteristics that exhibit the character and beauty of wood will be evident on mouldings. These characteristics will include, but not be limited to, color variations, heartwood, sapwood, pin knots, worm holes and surface and end checks. Conestoga specifications do not allow these characteristics to affect structural integrity of the mouldings. • Natural characteristics that become evident through machining, environmental or atmospheric conditions such as minor bows, twists and crooks, may be evident but will not affect product quality or impede workability. -
Creating a Timber Frame House
Creating a Timber Frame House A Step by Step Guide by Brice Cochran Copyright © 2014 Timber Frame HQ All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, recording or otherwise, without the prior written permission of the author. ISBN # 978-0-692-20875-5 DISCLAIMER: This book details the author’s personal experiences with and opinions about timber framing and home building. The author is not licensed as an engineer or architect. Although the author and publisher have made every effort to ensure that the information in this book was correct at press time, the author and publisher do not assume and hereby disclaim any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from negligence, accident, or any other cause. Except as specifically stated in this book, neither the author or publisher, nor any authors, contributors, or other representatives will be liable for damages arising out of or in connection with the use of this book. This is a comprehensive limitation of liability that applies to all damages of any kind, including (without limitation) compensatory; direct, indirect or consequential damages; income or profit; loss of or damage to property and claims of third parties. You understand that this book is not intended as a substitute for consultation with a licensed engineering professional. Before you begin any project in any way, you will need to consult a professional to ensure that you are doing what’s best for your situation. -
Structural Design of Mass Timber Framing Systems
structural design of mass timber framing systems Bay Area Ian Boyle, P.E., S.E., P.Eng., Struct.Eng. November 7, design symposium fast +epp 2018 Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board “The Wood Products Council” is a This course is registered with AIA Registered Provider with The CES for continuing professional American Institute of Architects education. As such, it does not Continuing Education Systems include content that may be (AIA/CES), Provider #G516. deemed or construed to be an approval or endorsement by the AIA of any material of construction Credit(s) earned on completion of this course will be reported to AIA or any method or manner of handling, using, distributing, or CES for AIA members. Certificates of Completion for both AIA dealing in any material or product. members and non-AIA members are available upon request. Mass timber structural framing systems have high strength-to-weight ratios, are dimensionally stable, and are quickly becoming systems of choice for sustainably minded designers. This presentation will provide a detailed look at the structural design processes associated with a variety of mass timber products, including glued-laminated timber (glulam), cross-laminated timber (CLT), and nail- laminated timber (NLT). Applications for the use of these products in gravity force-resisting systems under modern building codes will be discussed. Other technical topics will include use of mass timber panels as two-way spanning slabs, connection options and design considerations, and detailing and construction best practices. course description At the end of this course, participants will be able to: 1. -
H1.2 FRAMING TIMBER TREATMENT a Single, Boron-Based Treatment Class, H1.2, May Now Be Used for Almost All Enclosed Timber Framing
BUILD RIGHT H1.2 FRAMING TIMBER TREATMENT A single, boron-based treatment class, H1.2, may now be used for almost all enclosed timber framing. This has simplified framing timber, but have treatment processes or on-site handling changed? By Alide Elkink, Freelance Technical Writer, Wellington simplified timber treatment system for framing was introduced in Look for the pink timber and brand April 2011 under Amendment 7 to the Building Code Acceptable NZS 3640 requires treated timber to be identified either by end tag (a burn Solution B2/AS1. This followed research and consultation and brand or tag at the timber ends) or by strip branding (along the timber edge A was based on several premises, including: or face) or packet branding. The branding must include the plant treatment ❚ simplification of treated timber identification and use on site number, the preservative number and the hazard class (see Figure 1). ❚ the relative safety of handling treated timber As end brands are often cut off during the construction, a secondary ❚ the treatment must remain effective after being rain wet for reasonable means of treatment identification is colour-coding. H1.2 boron-treated periods of time timber is colour-coded pink – the same as previously. ❚ the treatment must be reasonably priced. In the future, an audit stamp to indicate that the treatment and testing Since 1 July 2011, only B2/AS1 with Amendment 7 incorporated may process has been independently audited may also be included in the be used. timber identification information. Only boron treatment for H1.2 framing now Protection effective but minimise rain wetting The B2/AS1 Amendment 7 modified the requirements of NZS 3640:2003 Boric-treated timber has been used for many years and has proven to Chemical preservation of round and sawn timber and NZS 3602:2003 provide effective insecticide and fungicide protection while having low Timber and wood-based products for use in building.