Rosboro Glulam Technical Guide
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Glued-Laminated Timber Bridges
Glued-Laminated Timber Bridges Glulam design s are the most commonly used modern timber bridge designs The first glulam bridges were built in the mid-1940's. Since that time, they have become the most common type of timber bridge in both single and multi-span con figurations. Glulam beam bridges are completely prefabricated in modular compo nents and are treat ed with preservatives Wea llng surlac e ,r tsee Chapter 11) after fabrication. When prop erly designed , and fabricated, no field cutting or boring is required, resulting in a service life of 50 !!? Q) years or more. '§ "'" c: 0" Q) c: Q) GLULAM BEAM SYSTEMS Transverse bracing 3 c:0> OJ D '§ ' .c: c: Glulam beam bridges consist of a U Q) ' ~ .c: series of transverse glulam deck panels >- 3 '"3 D'" supported on straight or slightly curved 'o ;; o '"0 beams (Figure 1). They are the most ([ .9. practical for clear spans of 20 to 100 feet and are widely used on all size roads and highways. Glulam has proved to be an ex ceUent material for beam bridges because Cutaway plan members are available in a range of sizes and grades and are easily adapt able to a modular or systems concept of design and Traffi c rail I (see Chapter 10) construction. Although glulam can be r Curb r Glulam deck custom fabricated in many shapes and sizes, the most economical structure uses - - - - Bearin g - - - - - -J~--- ~ -. I standardized components in a repet itious ar ~ ' """"" - rangement, an approach that is particularly b e a m ~ Glu lam Substruct ure ~ adaptable to bridges. -
Glulam Design Properties and Layup Combinations
GLULAM DESIGN PROPERTIES AND LAYUP COMBINATIONS ENGINEERED WOOD SYSTEMS WOOD The Miracle Material™ Wood is the right choice for a host of construction applications. It is the earth’s natural, energy efficient and renewable building material. Engineered wood is a better use of wood. The miracle in today’s wood products is that they make more efficient use of the wood fiber resource to make stronger plywood, oriented strand board, I-joists, glued laminated timbers, and laminated veneer lumber. That’s good for the environment, and good for designers seeking strong, efficient, and striking building design. A few facts about wood. I We’re not running out of trees. One-third of the United States land base – 731 million acres – is covered by forests. About two-thirds of that 731 million acres is suitable for repeated planting and harvesting of timber. But only about half of the land suitable for growing timber is open to logging. Most of that harvestable acreage also is open to other uses, such as camping, hiking, and hunting. Forests fully cover one-half of Canada’s land mass. Of this forestland, nearly half is considered productive, or capable of producing timber on a sustained yield basis. Canada has the highest per capita accumulation of protected natural areas in the world – areas including national and provincial parks. I We’re growing more wood every day. American landowners plant more than two billion trees every year. In addition, millions of trees seed naturally. The forest products industry, which comprises about 15 percent of forestland ownership, is responsible for 41 percent of replanted forest acreage. -
North American Glued Laminated Timber American Wood Council Canadian Wood Council
NORTH AMERICAN GLUED LAMINATED TIMBER AMERICAN WOOD COUNCIL CANADIAN WOOD COUNCIL The American Wood Council (AWC) and the Canadian Wood Council (CWC) are pleased to present this Environmental Product Declaration (EPD) for North American Glued Laminated Timber (glulam). The EPD includes Life Cycle Assessment (LCA) results for all processes up to the point that glulam is packaged and ready for shipment at the manufacturing gate. The underlying LCA and the EPD were developed in compliance with ISO 14025:2006 and ISO 21930:2017 and have been verified under the UL Environment EPD program. The AWC and CWC represent wood product manufacturers across North America. The North American forest product industry is a global leader of sustainably sourced wood products. This EPD reflects years of research and numerous sustainability initiatives on behalf of our members to continually improve the environmental footprint of North American wood products. We are pleased to present this document to show our progress. Please follow our sustainability initiatives at www.awc.org and www.cwc.ca. North American Glued Laminated Timber North American Structural and Architectural Wood Products According to ISO 14025, EN 15804, and ISO 21930:2017 EPD PROGRAM AND PROGRAM OPERATOR UL Environment https://www.ul.com/ NAME, ADDRESS, LOGO, AND WEBSITE 333 Pfingsten Road Northbrook, IL 60611 https://spot.ul.com/ GENERAL PROGRAM INSTRUCTIONS General Program Instructions v.2.4 July 2018 AND VERSION NUMBER American Wood Council DECLARATION HOLDER Canadian Wood Council DECLARATION NUMBER 4788424634.104.1 DECLARED PRODUCT & North American Glued Laminated Timber, FUNCTIONAL UNIT OR DECLARED UNIT 1 m3 of glulam produced in North America (US and CA) ISO 21930:2017 Sustainability in Building Construction — Environmental Declaration of Building Products. -
DEFINITIONS Beams and Stringers (B&S) Beams and Stringers Are
DEFINITIONS Beams and Stringers (B&S) Beams and stringers are primary longitudinal support members, usually rectangular pieces that are 5.0 or more in. thick, with a depth more than 2.0 in. greater than the thickness. B&S are graded primarily for use as beams, with loads applied to the narrow face. Bent. A type of pier consisting of two or more columns or column-like components connected at their top ends by a cap, strut, or other component holding them in their correct positions. Camber. The convex curvature of a beam, typically used in glulam beams. Cantilever. A horizontal member fixed at one end and free at the other. Cap. A sawn lumber or glulam component placed horizontally on an abutment or pier to distribute the live load and dead load of the superstructure. Clear Span. Inside distance between the faces of support. Connector. Synonym for fastener. Crib. A structure consisting of a foundation grillage and a framework providing compartments that are filled with gravel, stones, or other material satisfactory for supporting the structure to be placed thereon. Check. A lengthwise separation of the wood that usually extends across the rings of annual growth and commonly results from stresses set up in wood during seasoning. Creep. Time dependent deformation of a wood member under sustained load. Dead Load. The structure’s self weight. Decay. The decomposition of wood substance by fungi. Some people refer to it as “rot”. Decking. A subcategory of dimension lumber, graded primarily for use with the wide face placed flatwise. Delamination. The separation of layers in laminated wood or plywood because of failure of the adhesive, either within the adhesive itself or at the interface between the adhesive and the adhered. -
Western BCI ® and VERSA-LAM ® Specifier Guide
WESTERN SPECIFIER GUIDE for products manufactured in White City, Oregon WSG 03/14/2013 2 The SIMPLE FRAMING SYSTEM® Makes Designing Homes Easier Architects, engineers, and designers trust Boise Cascade's engineered wood products to provide a better system for framing floors and roofs. It's the SIMPLE FRAMING SYSTEM®, conventional framing methods when crossventila tion and wiring. featuring beams, joists and rim boards the resulting reduced labor and Ceilings Framed with BCI® Joists materials waste are con sidered. that work together as a system, so you The consistent size of BCI® Joists spend less time cutting and fitting. In There's less sorting and cost associ ated with disposing of waste because helps keep gypsum board flat and fact, the SIMPLE FRAMING SYSTEM® you order only what you need. free of unsightly nail pops and ugly uses fewer pieces and longer lengths Although our longer lengths help your shadows, while keeping finish work than conventional framing, so you'll clients get the job done faster, they to a minimum. complete jobs in less time. cost no more. VERSALAM® Beams for Floor You'll Build Better Homes Environmentally Sound and Roof Framing with the These highlystable beams are ® As an added bonus, floor and roof free of the largescale defects that SIMPLE FRAMING SYSTEM ® systems built with BCI Joists require plague dimension beams. The Now it's easier than ever to design about half the number of trees as and build better floor systems. When result is quieter, flatter floors (no those built with dimension lumber. -
Beam Structures and Internal Forces
ENDS 231 Note Set 13 S2008abn Beam Structures and Internal Forces • BEAMS - Important type of structural members (floors, bridges, roofs) - Usually long, straight and rectangular - Have loads that are usually perpendicular applied at points along the length Internal Forces 2 • Internal forces are those that hold the parts of the member together for equilibrium - Truss members: F A B F F A F′ F′ B F - For any member: T´ F = internal axial force (perpendicular to cut across section) V = internal shear force T´ (parallel to cut across section) T M = internal bending moment V Support Conditions & Loading V • Most often loads are perpendicular to the beam and cause only internal shear forces and bending moments M • Knowing the internal forces and moments is necessary when R designing beam size & shape to resist those loads • Types of loads - Concentrated – single load, single moment - Distributed – loading spread over a distance, uniform or non-uniform. 1 ENDS 231 Note Set 13 S2008abn • Types of supports - Statically determinate: simply supported, cantilever, overhang L (number of unknowns < number of equilibrium equations) Propped - Statically indeterminate: continuous, fixed-roller, fixed-fixed (number of unknowns < number of equilibrium equations) L Sign Conventions for Internal Shear and Bending Moment Restrained (different from statics and truss members!) V When ∑Fy **excluding V** on the left hand side (LHS) section is positive, V will direct down and is considered POSITIVE. M When ∑M **excluding M** about the cut on the left hand side (LHS) section causes a smile which could hold water (curl upward), M will be counter clockwise (+) and is considered POSITIVE. -
A Simple Beam Test: Motivating High School Teachers to Develop Pre-Engineering Curricula
Session 2326 A Simple Beam Test: Motivating High School Teachers to Develop Pre-Engineering Curricula Eric E. Matsumoto, John R. Johnston, E. Edward Dammel, S.K. Ramesh California State University, Sacramento Abstract The College of Engineering and Computer Science at California State University, Sacramento has developed a daylong workshop for high school teachers interested in developing and teaching pre-engineering curricula. Recent workshop participants from nine high schools performed “hands-on” laboratory experiments that can be implemented at the high school level to introduce basic engineering principles and technology and to inspire students to study engineering. This paper describes one experiment that introduces fundamental structural engineering concepts through a simple beam test. A load is applied at the center of a beam using weights, and the resulting midspan deflection is measured. The elastic stiffness of the beam is determined and compared to published values for various beam materials and cross sectional shapes. Beams can also be tested to failure. This simple and inexpensive experiment provides a useful springboard for discussion of important engineering topics such as elastic and inelastic behavior, influence of materials and structural shapes, stiffness, strength, and failure modes. Background engineering concepts are also introduced to help high school teachers understand and implement the experiment. Participants rated the workshop highly and several teachers have already implemented workshop experiments in pre-engineering curricula. I. Introduction The College of Engineering and Computer Science at California State University, Sacramento has developed an active outreach program to attract students to the College and promote engineering education. In partnership with the Sacramento Engineering and Technology Regional Consortium1 (SETRC), the College has developed a daylong workshop for high school teachers interested in developing and teaching pre-engineering curricula. -
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 -
I-Beam Cantilever Racks Meet the Latest Addition to Our Quick Ship Line
48 HOUR QUICK SHIP Maximize storage and improve accessibility I-Beam cantilever racks Meet the latest addition to our Quick Ship line. Popular for their space-saving design, I-Beam cantilever racks can allow accessibility from both sides, allowing for faster load and unload times. Their robust construction reduces fork truck damage. Quick Ship I-beam cantilever racks offer: • 4‘ arm length, with 4” vertical adjustability • Freestanding heights of 12’ and 16’ • Structural steel construction with a 50,000 psi minimum yield • Heavy arm connector plate • Bolted base-to-column connection I-Beam Cantilever Racks can be built in either single- or double-sided configurations. How to design your cantilever rack systems 1. Determine the number and spacing of support arms. 1a The capacity of each 4’ arm is 2,600#, so you will need to make sure that you 1b use enough arms to accommodate your load. In addition, you can test for deflection by using wood blocks on the floor under the load. 1c Use enough arms under a load to prevent deflection of the load. Deflection causes undesirable side pressure on the arms. If you do not detect any deflection with two wood blocks, you may use two support arms. Note: Product should overhang the end of the rack by 1/2 of the upright centerline distance. If you notice deflection, try three supports. Add supports as necessary until deflection is eliminated. Loading without overhang is incorrect. I-Beam cantilever racks WWW.STEELKING.COM 2. Determine if Quick Ship I-Beam arm length is appropriate for your load. -
E-Mount QMSE
E-Mount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ag pull-out (withdrawal) capacities (lbs) in typical lumber: Lag Bolt Specifications Specific Gravity 5/16" shaft per 3" thread depth 5/16" shaft per 1" thread depth Douglas Fir, Larch .50 798 266 Douglas Fir, South .46 705 235 Engelmann Spruce, Lodgepole Pine (MSR 1650 f & higher) .46 705 235 Hem, Fir .43 636 212 Hem, Fir (North) .46 705 235 Southern Pine .55 921 307 Spruce, Pine, Fir .42 615 205 Spruce, Pine, Fir (E of 2 million psi and higher grades of MSR and MEL) .50 798 266 Sources: American Wood Council, NDS 2005, Table 11.2 A, 11.3.2 A Notes: 1) Thread must be embedded in a rafter or other structural roof member. -
A Vision for Forest Products Extension in Wisconsin
Wisconsin’s Forest Industry: Rooted in our Lives Rooted in our Economy Wisconsin Department of Natural Resources Forestry Division, Forest Products Services Wisconsin forest industry overview Industry sectors and trends Emerging markets Part I: Forest Industry Overview Wisconsin’s forest industry ~1,200 establishments Over 60,000 jobs $24.1 billion in goods and services annually Approximately 14% of manufacturing jobs Wisconsin’s forest industry (cont’d) Exports total over $2.2 billion annually Top employer in 10 counties Supports employment of over 111,000 additional jobs Why should we care? . The health of Wisconsin’s economy depends upon the health of Wisconsin’s forest industry . The health of Wisconsin’s forests depends upon the health of Wisconsin’s forest industry Why should we care? . We as consumers depend on forests! Flooring Baseball bats Houses Ice cream thickener Lumber Garden stakes Furniture Toilet paper Pressboard Charcoal Crafts Broom sticks Veneer Bowling pins Roofs Imitation bacon Plywood Toys Stairways Candy wrappers Dowels Signs Cider Fruit Paper Syrup Vitamins Cutting boards Paneling Pallets Cooking utensils Desks Windows Cardboard Pencils Food packaging Doors Grocery bags Shampoo Toilet seats Railroad ties Chewing gum Oars Toothpaste Energy Paper towels Coffee filters Nuts Firewood Oil spill agents Toothpicks Magazines Christmas trees Hockey sticks Diapers Golf tees Tool handles Liquid smoke Sponges Nail polish Animal bedding Cosmetics Mulch Wood pellets Fence posts Baby foods Postage stamps AND MORE! Can -
1996 LRFD Glulam
SUPPLEMENT Structural Glued Laminated Timber LRFD LOAD AND RESISTANCE FACTOR DESIGN MANUAL FOR ENGINEERED WOOD CONSTRUCTION SUPPLEMENT Structural Glued Laminated Timber LRFD LOAD AND RESISTANCE FACTOR DESIGN MANUAL FOR ENGINEERED WOOD CONSTRUCTION Copyright © 1996 APA – The Engineered Wood Association Preface This supplement contains adjustment factors, dimen- The reference strengths were derived according to the sions, factored resistance, reference strengths and other principles of ASTM D5457-93, Standard Specification for properties required to design structural glued laminated Computing the Reference Resistance of Wood-based Ma- timber in the LRFD format. In this format, the term “re- terials and Structural Connections for Load and sistance” is used to refer to member capacities (i.e., Resistance Factor Design. moment resistance, compression resistance, etc.). This is The tabulated reference strength values are to be used distinct from the term “strength” which refers to limit state within the reference end-use conditions defined therein. material properties — conceptually a “factored allowable When the end-use conditions fall outside the range of the stress.” reference conditions, the reference values shall be adjusted The member resistance values tabulated in this by the product of applicable adjustment factors as defined supplement are to be used in conjunction with the in AF&PA/ASCE 16-95 and also provided in this supple- design methodologies provided in AF&PA/ASCE 16-95, Stan- ment. For unusual end-use conditions, the designer should dard for Load and Resistance Factor Design (LRFD) for consult additional literature for possible further adjust- Engineered Wood Construction. ments. APA/EWS TABLE OF CONTENTS Chapter/Title Page Chapter/Title Page 1.