DOCSLIB.ORG

Sustainable Trail Bridge Design

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

U.S. Department of Transportation United States Department of Agriculture Federal Highway Administration Sustainable Trail Bridge Design Forest National Technology & 2023–2805P–NTDP March 2020 Service Development Program 2300–Recreation Sustainable Trail Bridge Design Notice Ordering Information This document was produced in cooperation with You can order a copy of this document using the the Recreational Trails Program of the U.S. Depart- order form on FHWA’s Recreational Trails Program ment of Transportation’s Federal Highway Adminis- website <http://www.fhwa.dot.gov/environment/rec- tration in the interest of information exchange. The reational_trails/publications/trailpub.cfm> U.S. Government assumes no liability for the use of Fill out the order form and submit it electronically. information contained in this document. Or you may email your request to: [email protected] The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers’ names Or you may mail your request to: appear in this report only because they are consid- Szanca Solutions/FHWA PDC ered essential to the objective of this document. 700 North 3rd Avenue The contents of this report reflect the views of the Altoona, PA 16601 authors, who are responsible for the facts and Fax: 814–239–2156 accuracy of the data presented herein. The con- tents do not necessarily reflect the official policy of Produced by the U.S. Department of Transportation. This report USDA Forest Service does not constitute a standard, specification, or National Technology and Development Program regulation. 5785 Hwy. 10 West Missoula, MT 59808–9361 Phone: 406–329–3978 Fax: 406–329–3719 Email: [email protected] U.S. Department of Transportation Federal Highway Administration Cover photo—A field crew and trail maintenance equipment on a trail bridge. Sustainable Trail Bridge Design James Scott Groenier Project Leader U.S. Department of Agriculture, Forest Service National Technology and Development Program 2E22A30—Sustainable Trail Bridge Design Project March 2020 In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) To file a program discrimination complaint, complete the USDA Program Discrimina- civil rights regulations and policies, the USDA, its Agencies, offices, and employees, tion Complaint Form, AD-3027, found online at http://www.ascr.usda.gov/complaint_fil- and institutions participating in or administering USDA programs are prohibited from ing_cust.html and at any USDA office or write a letter addressed to USDA and provide in discriminating based on race, color, national origin, religion, sex, gender identity (includ- the letter all of the information requested in the form. To request a copy of the complaint ing gender expression), sexual orientation, disability, age, marital status, family/parental form, call (866) 632-9992. Submit your completed form or letter to USDA by: (1) mail: status, income derived from a public assistance program, political beliefs, or reprisal or U.S. Department of Agriculture, Office of the Assistant Secretary for Civil Rights, 1400 retaliation for prior civil rights activity, in any program or activity conducted or funded by Independence Avenue, SW, Washington, D.C. 20250-9410; (2) fax: (202) 690-7442; or (3) USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary email: [email protected]. by program or incident. USDA is an equal opportunity provider, employer, and lender. Persons with disabilities who require alternative means of communication for program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should The Forest Service, an agency of the U.S. Department of Agriculture (USDA), has devel- contact the responsible Agency or USDA’s TARGET Center at (202) 720-2600 (voice and oped this information for the guidance of its employees, its contractors, and its cooper- TTY) or contact USDA through the Federal Relay Service at (800) 877-8339. Additionally, ating Federal and State agencies. The Forest Service assumes no responsibility for the program information may be made available in languages other than English. interpretation or use of this information by anyone except its own employees. The use of trade, firm, or corporation names is for the information and convenience of the reader. Such use does not constitute an official endorsement or approval of any product or ser- vice to the exclusion of others that may be suitable. Sustainable Trail Bridge Design Acknowledgments The project leader would like to thank David Strahl, Forest Service, Pacific Northwest Region; Eleanor Oman, Forest Service, Tongass National Forest; Merv Eriksson, Forest Service (retired); Jaime Schmidt, Forest Service, Washington Office; Chris Murphy, Forest Service, National Technology and Devel- opment Program; and Jerry Barrow, Forest Ser- vice (retired), for assistance with and review of this publication. ii Sustainable Trail Bridge Design Contents Executive Summary ........................................................................vi Introduction...............................................................................1 Trail Management Objectives ................................................................1 Siting ...................................................................................2 Bridge Types ..............................................................................3 Deck Girder and Deck Truss Bridges ...................................................4 Single-Unit Bridges ..................................................................4 Side Girder and Side Truss Bridges.....................................................5 Arch Bridges .......................................................................5 Cable Bridges ......................................................................6 Covered Bridges ....................................................................7 Materials .................................................................................7 Timber.............................................................................7 Steel .............................................................................11 Concrete..........................................................................11 Fiber-Reinforced Polymer (FRP) ......................................................11 Plastic Wood ......................................................................12 Design ..................................................................................12 Bridge Widths, Grades, and Approaches ...............................................12 Users and Loads..........................................................................13 Dead Loads .......................................................................13 Live Loads ........................................................................14 Snow Loads .......................................................................14 Wind Loads .......................................................................15 Snow Groomer Loads ...............................................................15 Fatigue Load ......................................................................15 Seismic Loads .....................................................................15 Maintenance Vehicles, Light Vehicles, and Emergency Vehicles ............................15 Design Methodology and Load Combinations ...........................................16 iii Sustainable Trail Bridge Design Forest Service Standard Trail Bridge Plans and Specifications....................................17 Timber Bridges ....................................................................18 Prefabricated Steel Bridges ..........................................................18 Trail Bridge Structure ......................................................................19 Substructures .....................................................................19 Abutments ........................................................................19 Piers .............................................................................19 Superstructures....................................................................20 Decking ..........................................................................20 Decking Types .....................................................................20 User Barriers ......................................................................21 Signage...........................................................................22 Construction Details and Constructability.....................................................22 Shedding Water and Debris ..........................................................22 Earth and Wood Contact ............................................................23 Screws Versus Nails ................................................................24 Through Bolts Versus Lag Screws.....................................................24 Weathering Steel Corrosion Problems .................................................24 Corrosiveness of Wood Treatments ...................................................24 Decking ..........................................................................25 Approaches .......................................................................25 Wearing Surface (Running Planks) ....................................................25 Rub Rails .........................................................................25
Recommended publications
  • Carpenters of Japanese Ancestry in Hawaii Hisao Goto Kazuko

    Carpenters of Japanese Ancestry in Hawaii Hisao Goto Kazuko

    Craft History and the Merging of Tool Traditions: Carpenters of Japanese Ancestry in Hawaii Hisao Goto Kazuko Sinoto Alexander Spoehr For centuries the Japanese have made extensive use of wood as the main raw material in the construction of houses and their furnishings, temples, shrines, and fishing boats. As a wood-worker, the carpenter is one of the most ancient of Japanese specialists. He developed a complex set of skills, a formidable body of technical knowledge, and a strong tradition of craftsmanship to be seen and appreciated in the historic wood structures of contemporary Japan.1 The first objective of this study of carpenters of Japanese ancestry in Hawaii is to throw light on how the ancient Japanese craft of carpentry was transplanted from Japan to a new social, cultural, and economic environment in Hawaii through the immigration of Japanese craftsmen and the subsequent training of their successors born in Hawaii. Despite its importance for the understanding of economic growth and develop- ment, the craft history of Hawaii has not received the attention it deserves. The second objective of the study is more anthropological in nature and is an attempt to analyze how two distinct manual tool traditions, Japanese and Western, met and merged in Hawaii to form a new composite tool tradition. This aspect of the study falls in a larger field dealing with the history of technology and of tool traditions in general. Carpentry today, both in Japan and in the United States, relies heavily on power rather than hand tools. Also, carpenters tend to be specialized, and construction is to a major degree a matter of assembling prefabricated parts.
  • 2005 • Modern Steel Construction November 2005 • Modern Steel Construction • 36 Diation of the Existing Steel Stringers Was Minimal

    2005 • Modern Steel Construction November 2005 • Modern Steel Construction • 36 Diation of the Existing Steel Stringers Was Minimal

    NATIONAL STEEL BRIDGE ALLIANCE PRIZE BRIDGE COMPETITION NATIONAL AWARD RECONSTRUCTED Red Cliff Arch Rehabilitation Project Red Cliff, CO Gregg Gargan ocated near Red Cliff, CO, southwest of Vail railroad. Any falling material would have been haz- existing connections. A bare concrete deck was used on U.S. Highway 24, the Red Cliff Arch Bridge ardous not only to the public, but also to the envi- to minimize the dead loads. Because of the widening, Lwas originally completed in 1941. Sixty-three ronment. A hard platform scaffolding system was the overhang became larger. To minimize the effects years later, the bridge was in dire need of help. Due required and provided several safety and schedule of the large overhang, a mandatory construction to age, as well as loads and traffic that were not envi- benefits. joint was placed beyond the exterior stringer. The sioned in the 1940s, the bridge needed an extensive Since Highway 24 is the main access to this core of the deck was placed first and allowed to gain rehabilitation. popular ski destination, closure of the highway was strength. The curb and remaining deck was then The newly rehabilitated Red Cliff Arch Bridge a concern. In order to achieve a superior concrete placed with their loads distributed to the newly com- was dedicated in November 2004. Preserving the product for the deck, a complete closure for the posite bridge core. To increase strength of the reha- structure’s historical integrity, while updating it to bridge was deemed necessary. To minimize the bilitated bridge, shear studs were added to stringers current safety standards and strength requirements, impact on the town, the contract required the bridge to create a composite deck.
  • Timber Planking, Puncheon and Boardwalk Structures

    Timber Planking, Puncheon and Boardwalk Structures

    California State Parks Trails Handbook Chapter 15. Timber Planking, Puncheons, and Boardwalks ................................. 15-1 15.1. Best Management Practices ....................................................................... 15-2 15.2. Timber Planking .......................................................................................... 15-2 15.2.1. Applications ............................................................................................ 15-2 15.2.2. Construction ........................................................................................... 15-3 15.3. Puncheons ................................................................................................... 15-4 15.3.1. Applications ............................................................................................ 15-4 15.3.2. Construction ........................................................................................... 15-9 15.3.3. Curved Puncheons ............................................................................... 15-26 15.3.3.1. Parallel Mudsills ........................................................................... 15-31 15.3.3.2. Flared Mudsills ............................................................................. 15-31 15.3.4. Equestrian Puncheons.......................................................................... 15-32 15.4. Boardwalks ................................................................................................ 15-35 15.4.1. Applications .........................................................................................
  • Bows, Arrows, Vanes and Arrow Components • Finish: Realtree • � Peak Drawweight: 50,60,70Lbs

    Bows, Arrows, Vanes and Arrow Components • Finish: Realtree • Peak Drawweight: 50,60,70Lbs

    BOWS AVAILABLE BY PRO SHOP SHOWROOM SALES ONLY The following bows are available at our Pro Shop location. By Manufacturer’s Agreement, these bows are not available for mail order or wholesale distribution. Complete Lancaster Archery Compound Bow Accessory Packages Add to any Bow Purchase for $119 (A $179.59 Value!) Package Includes: • TruGlo 3 Pin Sight with Light • TruGlo 4-Arrow Loc Down Quiver • 5 Complete Stock Carbon Arrows (Includes Nocks, Points, and Fletching) • Trophy Ridge Quick Shot Whisker Biscuit Rest • CR Braided Bow Sling • Outer Limit Buzz Kill Stabilizer • Rubber String Silencers • Tru Glo Accessory Kit (Red) Silencers, D-loop Material, Peep, Kisser 2770010 2015 COMPOUND BOWS + Bear® Arena 30 + Bear® Color Kits + Bear® Bounty RTH Package + Bear® Cruzer RTH Package • Axle to Axle: 30 1/2” • Colors to Customize your Bear® Bow! • Axle to Axle: 29 3/4” • Axle to Axle: 32” • IBO Speed: 345 fps • Designed for: Motive, Empire, Agenda, Venue, • IBO Speed: 295 fps • IBO Speed: 310 fps • Brace Height: 6.5” Anarchy HC Rumor and Arena • Brace Height: 7” • Brace Height: 6.5” • Let Off: 75% • Kit Includes: Overmold Grip Panel Grips • Let Off: 80% • Let Off: 70% • Mass Weight: 3.8 lbs. (4) Arena Riser Inserts • Mass Weight: 3.2 lbs. • Mass Weight: 3.6 lbs. • Draw Length: 25 1/2-30” (2) Agenda and Venue Riser Inserts • Draw Length: 23 1/2-27” • Draw Length: 12-30” • Peak Draw Weight: 50, 60, 70 lbs. • Peak Draw Weight: 50 lbs. • Peak Draw Weight: 5-70 lbs. (2) String Dampeners Bows, Arrows, Vanes and Arrow Components Bows, Arrows, Vanes • Available RH and LH • Available Colors: Green Orange Red Yellow • Available RH and LH • Available RH and LH • Finish: Realtree Xtra® Green Camo • Finish: Realtree MAX-1® Camo • Finish: Realtree Xtra® Camo 1360213 $24.99 ea.
  • FOSS® Materials and Motion Module Vocabulary/Glossary Terms NGSS Edition © 2018

    FOSS® Materials and Motion Module Vocabulary/Glossary Terms NGSS Edition © 2018

    FOSS® Materials and Motion Module Vocabulary/Glossary Terms NGSS Edition © 2018 Investigations Guide Vocabulary Investigation 1: Getting to Know Wood texture above tree absorb waterlogged basswood wood bead up woodworker below break Investigation 2: Getting to Know Paper cedar around change bend communicate blot compare bumpy different cardboard evaporate chipboard fewer construction paper float corner glue corrugated paper grain crease graph drop laminate dry layer facial tissue less fiber material flat mixture flip more flour observe fold particleboard half pine kraft paper plywood mold property newsprint raft over rough paper same paper towel sand papier-mâché sandpaper pulp sawdust recycling screen rolling senses slick shape stiff shavings strip sink submerge smooth tagboard soak tear spread thick strong thin test waxed paper FOSS Materials and Motion Module Vocabulary/Glossary Terms, NGSS Edition © 2018 1 of 3 wet motion wheat paste move pull Investigation 3: Getting to Know Fabric push burlap rocket cloth roll cold rolling conserve ramp corduroy slope denim slowly fabric speed fleece strength hot stop knit least magnet most natural resource nubby recycle reuse ripstop nylon rough satin scratchy seersucker shiny slippery smooth soak soft sparkle organza structure temperature terry cloth texture thread warp waterproof weft woven Investigation 4: Getting Things to Move cause collide collision direction distance effect fast gentle gravity FOSS Materials and Motion Module Vocabulary/Glossary Terms, NGSS Edition © 2018 2 of 3 Science Resources Vocabulary Investigation 1: Getting to Know Wood compare engineer forest observation tree wood Investigation 2: Getting to Know Paper paper pulp sawdust water Investigation 3: Getting to Know Fabric air fabric jute land oil recycle Investigation 4: Getting Things to Move collide direction gravity motion pull push rolling slope speed FOSS Materials and Motion Module Vocabulary/Glossary Terms, NGSS Edition © 2018 3 of 3 .
  • G 13.1 Guidelines for Steel Girder Bridge Analysis.Pdf

    G 13.1 Guidelines for Steel Girder Bridge Analysis.Pdf

    G13.1 Guidelines for Steel Girder Bridge Analysis 2nd Edition American Association of State Highway Transportation Officials National Steel Bridge Alliance AASHTO/NSBA Steel Bridge Collaboration Copyright © 2014 by the AASHTO/NSBA Steel Bridge Collaboration All rights reserved. ii G13.1 Guidelines for Steel Girder Bridge Analysis PREFACE This document is a standard developed by the AASHTO/NSBA Steel Bridge Collaboration. The primary goal of the Collaboration is to achieve steel bridge design and construction of the highest quality and value through standardization of the design, fabrication, and erection processes. Each standard represents the consensus of a diverse group of professionals. It is intended that Owners adopt and implement Collaboration standards in their entirety to facilitate the achievement of standardization. It is understood, however, that local statutes or preferences may prevent full adoption of the document. In such cases Owners should adopt these documents with the exceptions they feel are necessary. Cover graphics courtesy of HDR Engineering. DISCLAIMER The information presented in this publication has been prepared in accordance with recognized engineering principles and is for general information only. While it is believed to be accurate, this information should not be used or relied upon for any specific application without competent professional examination and verification of its accuracy, suitability, and applicability by a licensed professional engineer, designer, or architect. The publication of the material contained herein is not intended as a representation or warranty of the part of the American Association of State Highway and Transportation Officials (AASHTO) or the National Steel Bridge Alliance (NSBA) or of any other person named herein, that this information is suitable for any general or particular use or of freedom from infringement of any patent or patents.
  • Garage Doors by Ryterna EN

    Garage Doors by Ryterna EN

    GARAGE DOORS by RYTERNA 2 GARAGE DOORS BY RYTERNA Content: 6 RIB 8 MIDRIB 12 FLUSH 14 GEORGIAN (CASSETTE) 16 SLICK 20 SLICK PLUS 22 MACRORIB & MICRORIB 24 TOPRIB 26 SLIM LINE 28 OKOUME 30 ALUMAX 32 RETRO 34 SIDE HINGED GARAGE DOORS 40 SIDE DOORS 44 WICKET DOORS 46 DECOR APPLIQUÉS 48 FULL VISION PANELS 49 STAINLESS STEEL WINDOWS 49 PVC DOUBLE GLAZED WINDOWS 51 HARDWARE TYPE R40 53 HARDWARE TYPE TL 54 FASCIA PANELS AND FRAMES 55 ACCESSORIES 56 THE SIDE SLIDING SECTIONAL DOOR 60 CUSTOM MADE DOORS DINE NI SO 9001 :2 00 0 ZN: 15 1 00 9 56 5 62 NON-STANDARD SOLUTIONS 62 MATCHING DESIGN GARAGE DOORS BY RYTERNA 3 Sectional door TL Alumax. Entrance door RD 80 custom design. 4 GARAGE DOORS BY RYTERNA Unlimited creativity Think outside the box GARAGE DOORS BY RYTERNA 5 Rib Horizontal ribs every 10 cm give this door a light robust appearance. This is a contemporary door that looks good in any architectural setting. ‘Rib’ design doors are often combined with full-vision aluminium panels available in any RAL colour. The Wood Rib style doors come with woodgrain embossed surface. ‘Rib’ design panels are best for extra size doors – they can be made up to 10 metres wide. Other painted colours similar to RAL palette Woodgrain Stucco 6 GARAGE DOORS BY RYTERNA RAL 9016 RAL 8017 Track type R40 UM/ SM/ TM, TL STD/ LHR FM/ LHR RM GARAGE DOORS BY RYTERNA 7 Midrib ‘Midrib’ design doors, grooved in the middle of each panel, give the impression of solid timber boards.
  • FOSS Materials in Our World Module Glossary 3 Edition © 2012 Above In

    FOSS Materials in Our World Module Glossary 3 Edition © 2012 Above In

    FOSS Materials in Our World Module Glossary 3rd Edition © 2012 above in a higher place; on top of (IG) absorb to soak in (IG) across to or on the opposite side (IG) air a mixture of gases that we breathe (SRB) around to move or place along the outside (IG) basswood a lightweight, soft wood from a linden tree (IG) bead a small rounded object with a hole through which thread can be passed; a piece of jewelry (IG) below in a lower place; underneath (IG) bend to curve (IG) blot to dry or remove a liquid with an absorbent material, such as a paper towel (IG) break to separate into pieces (IG) bumpy having raised, rounded spots; lumpy (IG) burlap a strong, coarsely woven cloth made of fibers of jute, flax, or hemp (IG) cedar a soft wood from a cedar tree (IG) change to make or become different (IG) chipboard a thick, crude paper made from recycled cardboard (IG) clean washed or polished; not dirty (IG) cloth fabric or material formed by weaving or knitting (IG) clothing garments made of fabric to cover oneself (IG) communicate to explain or exchange thoughts and information, such as when writing or speaking (IG) compare to look at how things are the same and different (SRB, IG) construction paper a thicker paper that is many sizes and colors (IG) conserve to use wisely (IG) FOSS Materials in Our World Module Vocabulary/Glossary Terms, 3rd Edition © 2012 1 of 7 corduroy a durable fabric, usually made of cotton, with vertical ribs (IG) corner the point at which the sides of an object, such as a box, meet (IG) cornstarch a white powder made from
  • Difference Between Deck Type and Through Type Bridge and Their Components

    Difference Between Deck Type and Through Type Bridge and Their Components

    Difference between Deck Type and Through Type Bridge and their Components Naveen Choudhary 1 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES • Deck-type bridges refer to those in which the road deck is carried on the top flange or on top of the supporting girders. • Through type bridge - The carriageway rests at the bottom level of the main load carrying members. In the through type plate girder bridge, the roadway or railway is placed at the level of bottom flanges. Mr. Naveen Choudhary, GEC Ajmer 2 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES Mr. Naveen Choudhary,GEC Ajmer 3 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES Through type deck bridge Mr. Naveen Choudhary,GEC Ajmer 4 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES Mr. Naveen Choudhary,GEC Ajmer 5 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES Mr. Naveen Choudhary,GEC Ajmer 6 Through Type Bridge Mr. Naveen Choudhary,GEC Ajmer 7 Through Type Bridge Mr. Naveen Choudhary,GEC Ajmer 8 Through Type Bridge Mr. Naveen Choudhary,GEC Ajmer 9 Deck Type Bridge Mr. Naveen Choudhary,GEC Ajmer 10 Deck Type Bridge Mr. Naveen Choudhary,GEC Ajmer 11 Deck Type Bridge Mr. Naveen Choudhary,GEC Ajmer 12 Cross-Section deck type bridge Mr. Naveen Choudhary,GEC Ajmer 13 Normal span ranges of bridge system Mr. Naveen Choudhary,GEC Ajmer 14 Normal span ranges of bridge system TYPE Maximum Span 500 m Steel arch bridge 240 m Steel bow-string girder bridge 1200 m Steel cable suspension bridge 30 m Steel plate girder 10 m Steel rolled beam bridge 180 m Steel truss bridge Mr.
  • Working-Class Router Table Easy-To-Build Table Is About Results, Not Appearances

    Working-Class Router Table Easy-To-Build Table Is About Results, Not Appearances

    Working-Class Router Table Easy-to-build table is about results, not appearances BY MARC ADAMS 60 FINE WOODWORKING COPYRIGHT 2014 by The Taunton Press, Inc. Copying and distribution of this article is not permitted. router table is indispensable for a wide range of tasks. in it; or a simple table-insert plate with a router screwed to it. Armed with a big, solid fence, it can cut joinery, raise Whatever you choose, the plate should be 3⁄8 in. to 1⁄2 in. thick A panels, produce moldings, and even edge-joint boards. and made from a material like aluminum or phenolic that won’t Take off the fence and the table can be used for pattern routing. sag from the weight of a big router. I went with the insert plate, I designed and built this router table years go, when I needed attaching a router I already own, a more affordable approach something fast and simple. I always figured I’d replace it some than buying a lift. day with something nicer. But nearly 30 years later, the original You’ll also need a simple plastic dust port designed for router table is still in use at my school, and we have built seven more fences, and some 1⁄4–20 threaded knobs and T-nuts for attaching just like it. That’s because the materials are affordable, the joinery the fence. If you don’t have a tool-triggered shop vacuum, I also is straightforward, the table is accurate, and it has all the features recommend a double switch made for router tables, like the one we require.
  • Building a Sliding Table for Your Tablesaw

    Building a Sliding Table for Your Tablesaw

    BUILDING A SLIDING TABLE FOR YOUR TABLESAW Safety Tablesaws can hurt you two ways. Involuntary injury is where the saw reaches out and touches you; it is almost always the result of kickback. The sliding table can virtually eliminate the risk of kickback during crosscutting by keeping your work A Sliding Crosscut Table is one of the most useful firmly under control, moving precisely in the plane of the blade. accessories you can add to your tablesaw. With good outfeed Voluntary injury happens when you reach out and touch support and an accurate crosscutting system, your saw will be as the blade, whether through inattention or distraction. Reducing safe, accurate and versatile as any in the business. the opportunity for voluntary injury is the job of our Lexan blade Building our sliding table is easy. The list of tools & materi- path cover, stop block, exit block, and the table's handle. The als you'll need is quite short: blade cover, unlike some saw guards, doesn't get in your way, obscure visibility or make it difficult to carry out a cut. It cannot One pair phenolic runners, included in kit absolutely prevent injury; if your workpiece can reach the blade, One Lexan blade path cover, included so can you if you try hard enough. However, it will prevent your 1/2" or 3/4" plywood 32-3/8" deep by 37" wide hands' easy access to the blade, and it will keep chips and saw- Plywood or hardwood 8" x 49" x 1-1/2" thick dust from smacking you in the face too.
  • Bridge Deck Design Publication No

    Bridge Deck Design Publication No

    U.S. Department of Transportation Federal Highway Administration Steel Bridge Design Handbook Bridge Deck Design Publication No. FHWA-IF-12-052 - Vol. 17 Archived November 2012 Notice This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for use of the information contained in this document. This report does not constitute a standard, specification, or regulation. Quality Assurance Statement The Federal Highway Administration provides high-quality information to serve Government, industry, and the publicArchived in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement. Steel Bridge Design Handbook: Bridge Deck Design Publication No. FHWA-IF-12-052 – Vol. 17 November 2012 Archived Archived Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No. FHWA-IF-12-052 – Vol. 17 4. Title and Subtitle 5. Report Date Steel Bridge Design Handbook: Bridge Deck Design November 2012 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Brandon Chavel, Ph.D, PE 9. Performing Organization Name and Address 10. Work Unit No. HDR Engineering, Inc. 11 Stanwix Street 11. Contract or Grant No. Suite 800 Pittsburgh, PA 15222 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Office of Bridge Technology Technical Report Federal Highway Administration March 2011 – November 2012 1200 New Jersey Avenue, SE Washington, D.C.