DOCSLIB.ORG

Stone Road Pavements

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Stone Road Pavements STONE ROAD PAVEMENTS Facoltà di Ingegneria Civile e Industriale Corso di laurea in Ingegneria dei sistemi di trasporto Cattedra di Transport Infrastructures Candidato Gianluca Cosentino 1312548 Relatore Paola Di Mascio A/A 2016/2017 Preface 1.ROAD PAVEMENTS………...…………………………………………..1 1.1.Definition…………………………………………………………………2 1.2. Types of pavements……...……………….…………………………….3 1.2.1. Flexible pavements 1.2.2. Semi-rigid pavements 1.2.3. Rigid pavements 1.2.4. Composite pavements 1.2.5. Modular pavements 2. ROMAN ROADS ..................................................................................... 7 2.1 History ....................................................................................................... 8 2.2 Street names .......................................................................................... 10 2.3. The roman road construction…………………………………… …10 2.4. The main roads…………………………………………………….....15 3. HINTS OF LITHOLOGY……………………………...………………17 3.1. Minerals and rocks……………………………………………………18 3.1.1. Remarks 3.1.2. The externality of minerals 3.2. Igneous rocks (or endogenous, or magmatic)…………….………..23 3.2.1. Intrusive rocks (or depth massive) 3.2.2. Effusive rocks (or volcanic) 3.3. Sedimentary rocks (or exogenous)………………………………….29 3.3.1. Glaciers action 3.3.2. Water action 3.3.3. Atmospheric action 3.3.4. Action of the sea 3.3.5. Volcanoes action 3.3.6. Biological action 3.3.7. Diagenesis of sediments 3.3.8. Sedimentary rocks of chemical origin 3.4. Metamorphic rocks…………………………………………………….34 4. TYPES OF MATERIALS USED IN STONE PAVEMENT LAYERS………………………………….………………………………...37 4.1. Generality……………………………..…………………………………38 4.2. The cobblestones……………………………..…………………...……..39 4.2.1. Achievement of dry cobblestones 4.2.2. Floor decoration technique 4.2.3. Combination of cobblestone with stone slabs 4.2.3.1. Realization of cobblestone and stone pavements 4.2.4. The cobbled lime 4.3. The tile stone……………………………………………..……….…….51 4.3.1. Pattern 4.3.2. Pavement thickness 4.3.3. Construction procedure 4.3.4. Opera commissioning 4.3.5. Beating 4.3.6. Seals 4.3.6.1. Sealing with hot bitumen 4.3.6.2. Sealing with cold bitumen emulsion 4.3.6.3. Sealing with asphalt mastic 4.3.6.4. Sealing with cement grout 4.3.6.5. Pose in a bed of sand and cement and sealing with cement grout 4.3.7. Stone pavement with rails 4.3.8. The pavè 4.3.9. Pavements with smollers 4.3.10. Tiles arranged in modules for pavements 4.3.10.1. Construction of the pavements using cubes arranged in modules 4.4. The flag stone………...…………………………………………….........76 4.4.1. Implementation of flag stone technique 4.4.2. The apparatus 4.4.3. Implementation of the pavements in regular flag 4.4.3.1. Procedure for the installation of the flag stone 4.4.4. Trams entries 4.4.5. Flag stone in uncertain work 4.4.6. The pavement “at botanical stabilization” 4.5. Sidewalks………………………………...…………………….......91 4.5.1. Sidewalks implementation 5. USE OF STONE IN ROAD PAVEMENTS………………………..……106 5.1. Porphyrys…………………………………………………………..….108 5.2. Granites………………………………………………………….....…..110 5.3. Marbles………………………………………………………………...112 5.4. Travertino……………………………………………………………...114 5.5. Interlocking concrete pavements…………………………...……….116 6. THE DRAINAGES…………………………………………..…….……118 6.1. Hydrological budget and coefficient of performance……………...121 6.2. Section types and drainage systems…………………………..…..…123 6.2.1. Surface drainage 6.2.2. Surface waters downspouts 6.2.3. Water underground downspouts 6.2.4. Storm collector or falling mouths 6.2.5. Manhole covers 7. MECHANICAL AND PHYSICAL CHARATERISTICS OF STONE………………………...………………………………..………...137 7.1. Physical properties of interest………..………………….……...……138 7.1.1. Mechanical properties 7.1.2. Thermal properties 7.1.3. Density 7.2. Technological properties………………………………………….......139 7.2.1. Ductility/Malleability 7.2.2. Hardenability 7.3. Features of stone materials………………………………..……….....140 7.3.1. Chemical-physical and mechanical characteristics of stone materials 7.4. Cost………………………………………………………...……………143 7.5. Durability……………………………………………………………....144 7.6. Fire…………………………………………………………………...….144 7.7. Compressive strength…………………………………………………145 7.8. Appearance…………………………………………………………….145 7.9. Hardness……………………………………………………………..…145 8. DESIGN METHODS.……………………………………………....….147 8.1. Design methods………………………………....……………………..148 8.2. Design guidance for lightly trafficked roads from I.D. Cook and J.Knapton…………………………………………………….………...150 8.3. The AASHTO method…………………….…...……………………...157 Conclusions Reference Preface First of all, I would like to thank Professor Paola Di Mascio for suggesting me the topic of this thesis and for guiding me in writing it. This work treats stone pavements that are representative of many of roads in the historical downtown of Italian cities. The focus of the study is on current techniques used for pavements considering also what has been used in the past, particularly during the Roman period. A summary description of function of the pavement along with a list of the main types is presented; afterwards a description of stone pavements used during Roman times have been carried out, reporting some details on the main roads. After some sketches of lithology, various types of pavements (cobblestones, tile stone, flag stone) are described in detailed with a brief description of sidewalks; this part represents the core of the work. Various type of road drainage systems is presented before treating in detail stone materials and their mechanical properties (i.e. compressive strength, hardness, mass density). Finally, a project example has been considered; the design methods which have been focused on in this work, are empirical (Design guidance for lightly trafficked roads from I.D. Cook and J. Knapton and the AASHTO method). Fig. 1.1. Generic road 1. ROAD PAVEMENTS Wearing course Binder course in asphalt concrete Crushed stone aggregate Subbase Fig. 1.2 Scheme of pavement for minor road 1 We begin our thesis making a sort of introduction and then giving a general definition of pavement. Later we will discuss the various types: flexible, rigid and semi-rigid. 1.1. Definition The road pavement is the structure that separates the tires of the vehicles from the subgrade, which is the upper layer of the soil in the embankment or in the trench that makes up the road. It can be also the concrete or a steel bridge deck, or still the tunnel invert. A pavement is formed by a succession of layers consisting of materials of different physical and mechanical characteristics, chosen according to the function that fulfill these layers within the structure and depending on the prevailing type of stress to which they are subject by traffic loads. Such a composition is derived from economic considerations: each layer is constituted by the most suitable material to respond to the stresses induced by traffic, that decreases from the top downwards. The reduction of the stresses with the depth depends on the stiffness and thickness of each layer. In general the pavements perform three different tasks: • to reduce tensions transmitted to the subgrade at a level compatible with its load-bearing capacity so that the soil does not undergo excessive deformation; 2 • to form a stable, durable and little deformable structure able to withstand the repeated loads applied by vehicles and such as to ensure an adequate driving comfort; • to ensure the safety of traffic in relation to the skid resistance in the presence of contaminants (water, mud, snow, ice, rubber deposits). 1.2. Types of pavements Upon variation of the materials used and of the order with which they are arranged in structure, we can distinguish the following types of pavements: 1.2.1. Flexible pavements It mainly consists of the following layers: • surface course in bituminous concrete consisting of two layers: the wearing course and the binder; • base course made of asphalt concrete, or of crushed stone , crushed slag, or other untreated or stabilized materials; • subbase in granular materials or recycled materials; • subgrade 3 Fig. 1.3. Scheme of a flexible pavement 1.2.2. Semi-rigid pavements Constituted by a succession of layers similar to that of the flexible pavements, but the base layer is bonded with cement (cemented aggregate). Fig. 1.4. Scheme of a semi-rigid pavement 4 1.2.3. Rigid pavements A rigid pavement is constructed from cement concrete or reinforced concrete slabs. Grouted concrete roads are in the category of semi-rigid pavements. The design of rigid pavement is based on providing a structural cement concrete slab of sufficient strength to resists the loads from traffic. The rigid pavement has rigidity and high modulus of elasticity to distribute the load over a relatively wide area of soil. Fig. 1.5. Scheme of a rigid pavement 1.2.4. Composite pavements Constituted by a rigid pavement covered with a layer in bituminous conglomerate. 5 Fig. 1.6. Scheme of a composite pavement 1.2.5. Modular pavements Constituted by natural or artificial stone elements (brick, concrete, etc.) resting on a bed of sand or cement mortar, a base layer and a subbase. This work deals with the modular pavements and in particular with natural stone pavements. 6 2. ROMAN ROADS Fig. 2.1. Roman road 7 It seems appropriate to spend a few lines on the topic about those routes which are still used today, because these roads are almost entirely made of stone (Appia Antica or Aurelia Antica). 2.1. History Legend attributes to Heracles the paternity of the first major communication route, from the Guadalquivir delta to southern Italy.
Load more

Recommended publications
  • Chapter 4 Low-Volume Roads Engineering
    Chapter 4 Chapter Chapter 4 Low-Volume Roads Engineering Low-V Low-V Low-V Low-V Low-V olume R olume R olume R olume R olume R “You get what you Inspect, not what you Expect.” LOW VOLUME ROAD is considered a road The basic steps are: oads Engineering oads Engineering oads Engineering oads Engineering oads Engineering that has relatively low use (an Average Planning A Daily Traffic of less than 400 vehicles per day), Location low design speeds (typically less than 80 kph), and Survey corresponding geometry. Most roads in rural areas are Design low-volume roads. A well planned, located, designed, Construction constructed, and maintained low-volume road system Maintenance is essential for community development, flow of goods If any one of these steps is omitted, a road may and services between communities, and resource perform poorly, not meet its expectations, fail management activities. However roads, and particularly prematurely, require unnecessarily high maintenance, or road construction, can create more soil erosion than cause environmental impacts. Without planning and most other activities that occur in rural areas. Proper good location, a road may not adequately serve its users planning and design of the road system will minimize or may be in a problematic area. Survey and design are adverse impacts to water quality. Poorly planned road needed to fit the road to the ground and have it function systems can have high maintenance and repair costs, properly. Good construction insures that the design is contribute to excessive erosion, and fail to meet the needs implemented and built with some degree of quality of the users.
    [Show full text]
  • Pedestrian and Light Traffic Applications Introduction Brick Pavers Are Arranged Cost Savings That Upon the Bedding Sand in Supplement the Savings the Desired Pattern
    Flexible Brick Industry Brick Paving Association Pedestrian and Light Traffic Applications Traffic Light and Pedestrian Introduction brick pavers are arranged cost savings that upon the bedding sand in supplement the savings the desired pattern. Sand afforded by the brick is then spread into the itself. In addition, spaces between the pavers replacement of pavers as jointing material. after repair of utilities beneath a flexible brick As the whole paving pavement is easily system compacts with time achieved. and use, the bricks interact with the jointing sand and base materials to achieve the unique quality of “interlock.” Interlock holds the pavers in place Brick paving has been used for thousands and distributes the load of years. The Romans laid brick in roads through the layers down crisscrossing their vast empire, some of to the subgrade, enabling which still exist. Americans have employed the surface to contribute the material since the earliest Colonial days, to the strength of the and brick pathways and sidewalks thread whole system. When through the landmark sites and properly installed, brick As an architect’s medium, historic areas across the country. interlocking pavements are brick is equally flexible. highly stable and durable. Its basic aesthetic appeal is legendary as a material Today, as many property the flexible nature of its This basic advantage begets that exudes warmth and owners and architects foundation and the action others. Because flexible elegance through the attest, brick paving is of the pavers themselves. brick paving provides permanent color of fired timeless, especially for In such flexible pavements, interlock, no rigid concrete clay or shale.
    [Show full text]
  • Pavements and Surface Materials
    N O N P O I N T E D U C A T I O N F O R M U N I C I P A L O F F I C I A L S TECHNICAL PAPER NUMBER 8 Pavements and Surface Materials By Jim Gibbons, UConn Extension Land Use Educator, 1999 Introduction Traffic Class Type of Road Pavements are composite materials that bear the weight of 1 Parking Lots, Driveways, Rural pedestrian and vehicular loads. Pavement thickness, width and Roads type should vary based on the intended function of the paved area. 2 Residential Streets 3 Collector Roads Pavement Thickness 4 Arterial roads 5 Freeways, Expressways, Interstates Pavement thickness is determined by four factors: environment, traffic, base characteristics and the pavement material used. Based on the above classes, pavement thickness ranges from 3" for a Class 1 parking lot, to 10" or more for Class 5 freeways. Environmental factors such as moisture and temperature significantly affect pavement. For example, as soil moisture Sub grade strength has the greatest effect in determining increases the load bearing capacity of the soil decreases and the pavement thickness. As a general rule, weaker sub grades require soil can heave and swell. Temperature also effects the load thicker asphalt layers to adequately bear different loads associated bearing capacity of pavements. When the moisture in pavement with different uses. The bearing capacity and permeability of the freezes and thaws, it creates stress leading to pavement heaving. sub grade influences total pavement thickness. There are actually The detrimental effects of moisture can be reduced or eliminated two or three separate layers or courses below the paved wearing by: keeping it from entering the pavement base, removing it before surface including: the sub grade, sub base and base.
    [Show full text]
  • PASER Manual Asphalt Roads
    Pavement Surface Evaluation and Rating PASER ManualAsphalt Roads RATING 10 RATING 7 RATING 4 RATING PASERAsphalt Roads 1 Contents Transportation Pavement Surface Evaluation and Rating (PASER) Manuals Asphalt PASER Manual, 2002, 28 pp. Introduction 2 Information Center Brick and Block PASER Manual, 2001, 8 pp. Asphalt pavement distress 3 Concrete PASER Manual, 2002, 28 pp. Publications Evaluation 4 Gravel PASER Manual, 2002, 20 pp. Surface defects 4 Sealcoat PASER Manual, 2000, 16 pp. Surface deformation 5 Unimproved Roads PASER Manual, 2001, 12 pp. Cracking 7 Drainage Manual Patches and potholes 12 Local Road Assessment and Improvement, 2000, 16 pp. Rating pavement surface condition 14 SAFER Manual Rating system 15 Safety Evaluation for Roadways, 1996, 40 pp. Rating 10 & 9 – Excellent 16 Flagger’s Handbook (pocket-sized guide), 1998, 22 pp. Rating 8 – Very Good 17 Work Zone Safety, Guidelines for Construction, Maintenance, Rating 7 – Good 18 and Utility Operations, (pocket-sized guide), 1999, 55 pp. Rating 6 – Good 19 Wisconsin Transportation Bulletins Rating 5 – Fair 20 #1 Understanding and Using Asphalt Rating 4 – Fair 21 #2 How Vehicle Loads Affect Pavement Performance Rating 3 – Poor 22 #3 LCC—Life Cycle Cost Analysis Rating 2 – Very Poor 23 #4 Road Drainage Rating 1 – Failed 25 #5 Gravel Roads Practical advice on rating roads 26 #6 Using Salt and Sand for Winter Road Maintenance #7 Signing for Local Roads #8 Using Weight Limits to Protect Local Roads #9 Pavement Markings #10 Seal Coating and Other Asphalt Surface Treatments #11 Compaction Improves Pavement Performance #12 Roadway Safety and Guardrail #13 Dust Control on Unpaved Roads #14 Mailbox Safety #15 Culverts-Proper Use and Installation This manual is intended to assist local officials in understanding and #16 Geotextiles in Road Construction/Maintenance and Erosion Control rating the surface condition of asphalt pavement.
    [Show full text]
  • Daviess County Road and Street Index
    2/22/2021 Daviess County Road and Street Index Route Begin End Length Road Name Number Location Location (miles) Abbie Avenue 1078 KY 2830 Dead End 0.143 Access Road to KY 456 1195 KY 456 Dead End 0.060 Acorn Ridge Court 1334 Beech Hill Drive Dead End 0.141 Affirmed Court 1010D Bold Forbes Way Cul-de-sac 0.047 Alley - 1 (Maceo) 1072L Church Lane 189' W.of High St. 0.094 Alley - 2 (Maceo) 1438 Sacra Drive Dead End 0.039 Alley - 3 (Stanley) 1355C Church Street US 60 0.136 Alley - 4 (Stanley) 1355E Church Street Griffith Station Road 0.103 Alley - 5 (Stanley) 1355D Church Street French Island Road 0.095 Alley - 6 (Brown Court) 1092Z Brown Court Stewart Court 0.137 Alma Court 1112C Waterfield Drive Cul-de-sac 0.159 Alsop Lane 1092A8 US 60 City Limits 0.442 Alvey Bridge Road 1298 KY 279 Hayden Bridge Road 1.454 Alvey Park Drive East 1105 KY 54 Alvey Park Drive W 0.328 Alvey Park Drive West 1106 KY 54 Alvey Park Drive E 0.340 Amethyst Court 1420E Diamond Drive Cul-de-sac 0.053 Antler Avenue 1120E Dead End Foors Lane 0.604 Aristides Drive 1010P Bold Forbes Way Cul-de-sac 0.132 Ashbyburg Road 1247 KY 81 KY 554 1.116 Ashland Avenue 1387B Rand Road (west) Rand Road (east) 0.327 Ashland Avenue Spur 1387B-80 Ashland Avenue End of Maintenance 0.025 At The Post Court 1507k Stirrup Loop Cul-de-sac 0.140 Aubrey Road 1072B Rockport Ferry Road Dead End 0.393 Aubrey Road Connector - 1 1072B-70 Aubry Road KY 2830 (south) 0.019 Aubrey Road Connector - 2 1072B-71 Aubry Road KY 2830 (north) 0.027 Aull Road 1031 Jack Hinton Road KY 144 2.538 Autumn Creek 1213
    [Show full text]
  • Review of Congestion Pricing Experiences a Report to the Federal Highway Administration
    Review of Congestion Pricing Experiences A Report to the Federal Highway Administration July 2010 Vinayak V. Dixit, Rami C. Harb, Glenn W. Harrison, Donald M. Marco, M. Seph Mard, A. Essam Radwan, Elisabet E. H. Rutstrom, and Mark P. Schneider* Georgia State University (Harrison, Mard, Rutstrom, Schneider) Louisiana State University (Dixit) University of Central Florida (Harb, Radwan, Marco) * Authors are listed alphabetically. The report is prepared as part of the project “Experiments on Driving under Uncertain Congestion Conditions and the Effects on Traffic Networks from Congestion Pricing Initiatives” which is funded under the “Exploratory Advanced Research Program” as Collaborative Agreement DTFH61-09-H-00012 Contact Person: Dr. Essam Radwan, P.E., Professor of Engineering Center for Advanced Transportation Systems Simulation Department of Civil, Environmental, and Construction Engineering University of Central Florida Orlando, FL 32816-2450 Email: [email protected] 1 Review of Congestion Pricing Experiences Traffic congestion is a major problem in many urban areas. According to the Texas Transportation Institute (TTI, 2009), the average American driver lost 36 hours in 2007 sitting in congestion, wasting an average of 24 gallons of fuel. The average losses per driver in cities where the population exceeded one million were 25% higher. These costs were quantified into a national productivity loss of $87.2 billion, a four-fold increase (in 2007 dollars) from 1982. This figure does not take into account local air quality degradation due to the burning of the wasted fuel; though that externality is partly mitigated by the recent push towards electric and hybrid vehicles and the ongoing increases in fuel efficiency standards (Halsey, 2010).
    [Show full text]
  • Cobblestone Buildings: Their Nature in General
    Cobblestone Buildings: Their Nature in General As Rich and Sue Freeman say so well in the introduction to their book Cobblestone Quest, Upstate NY residents drive by cobblestone houses and usually give them very little thought. Most people barely recognize that this area was the pre-Civil War birthplace of a new form of construction. It’s a method that remains peculiar to our region with over 90% of the cobblestone buildings in the entire United States being located within a 65-mile radius of Rochester, New York. Estimates vary, but approximately 700 to 1,200 cobblestone buildings were built in the United States. Between 600 and 900 of them are in New York State, spread over 25 counties, spanning from the Hudson River to Niagara Falls.1 Using an Ice Age residue of glacially-rounded native stones, pioneer craftsmen in the middle third of the nineteenth century perfected a form of folk art that was without precedent in America.2 This cobblestone craft that developed in this greater Rochester area flourished, spread and died out within less than half a century. Nevertheless, it left its stamp permanently on this region. According to Rich and Sue Freeman, who wrote the book Cobblestone Quest in 2005, it holds a place in history as the last generation of completely hand-built houses.3 While this article is dealing with cobblestone buildings as a construction method—not an architectural style—it can be said that most cobblestone buildings are Greek Revival in style. Those constructed before 1835 were, however, usually in the Federal style.
    [Show full text]
  • “Stone Pavements” (On Broadway in New York City, New York)
    “Stone Pavements” (on Broadway in New York City, New York) In The Manufacturer and Builder, Vol. 1, No. 7 July 1869, pp. 194 This article, which begins on the next page, is presented on the Stone Quarries and Beyond web site. http://quarriesandbeyond.org/ Peggy B. Perazzo Email: [email protected] July 2013 “Stone Pavements” (on Broadway in New York City, New York) In The Manufacturer and Builder, Vol. 1, No. 7, July 1869, pp. 194 “A pavement answering all possible requirements being a total impossibility, the main consideration comes to be, the sort of travel on the road. The Romans, looking only to durability, used heavy granite or basalt blocks, and many such pavements, constructed two thousand years ago, are still in good condition, though they are not what is wanted now. Durability may, to a certain extent, be sacrificed for more desirable qualities. It was a great mistake to lay the Russ pavement in Broadway; it is nothing but an imitation of the ancient Roman streets, and heavy, uninterrupted travel makes such pavements so smooth that it is cruelty to drive a horse over them. Where the travel is not so heavy, as is the case in the streets of Rome, the atmospheric influences prevent this polishing of the surface, and the pavement is not so objectionable. The common cobble-stone pavement, when the stones are not too large, gives a better foot-hold to the horses, and is, when well laid, very durable for light travel; but as the stones all lie with the most pointed part downward, they have a tendency to sink under heavy pressure; and the points being unequal in length and differing in degree of tapering, they will sink unequally.
    [Show full text]
  • Surface Pavement Materials Used Ion Urban Areas
    Session 4 - Specific techniques and innovation Paper : Pavement surface materials used in urban areas Authors : Egbert BEUVING (EAPA) - Netherlands Jean-Paul MICHAUT (COLAS) - France Pavement surface materials used in urban areas -The range of urban materials- Egbert Beuving (EAPA) and Jean-Paul Michaut (COLAS) Summary A wide variety of pavement surface materials have been used in urban areas. The choice of the surface material depends on a range of rational and irrational arguments. In former days the availability of the materials was a dominant factor. Nowadays a broad scale of materials is available and functional requirements play an important role in the decision for a certain pavement type and surface layer now. The materials available are: • Bituminous bound materials (asphalt concrete, mastic asphalt) • Cement bound materials (concrete, concrete elements) • (Small) paving elements (block pavers, modular materials, stone, terracotta) • Composite pavements (a combination of the above mentioned ones) In urban areas there is a wide variety of pavement users, as there are: pedestrians, wheelchair- users, parents with prams, roller-skates, bicyclists, scoot-mobiles, motorists, passenger cars and trucks. The choice of the surface material depends on the (functional) requirements. Some of these requirements are the same as for highways; other ones might depend on the local situation. Additional requirements for urban areas might be a certain surface texture or colour for a certain image, easy to repair to guarantee the accessibility of houses, shops and other buildings, noise reducing, open for water infiltration, smooth to avoid vibrations and easy to open for accessing sewerage, gas and water systems. There might also be a need for flexible materials for creating ramps, roundabouts, cables and wiring.
    [Show full text]
  • On-Site Pavement Section Sidewalk Detail Sign Post On
    WIDTH PER PLAN CURB TRANSITION ORANGE CONSTRUCTION FACE OF SIGN TOP OF CONCRETE (CONCRETE TYP) FENCING (WHERE NOTED ON PLAN) PER PLAN FINISHED 6"x6" 10/10 W.W.M. CL STABILIZE ENTIRE PILE GRADE CURB CONCRETE 2% SLOPE 1:12 WITH VEGETATION OR COVER SIDEWALK NYSDOT APPROVED 2 SLOPE OR LESS 2" @ 2% PITCH 4" X X X X X X GALVANIZED STEEL 1 (SIGN POST) ±6'-0" FENCE POST @ 8'-0" OC 4" SLOPE = 1:12 SLOPE 1:12 5' MIN. CRUSHED STONE SUBGRADE ITEM NO 304.03 NOTES: DETECTABLE WARNING ±6'-0" 4'-0" MIN. 1 1. SIDEWALK EXPANSION JOINTS SHALL BE SPACED AT 5' INTERVALS WITH 2" X 4" PRE-MOLDED JOINTS AT 15' O.C. 5'-0" OR EDGE OF BREAKAWAY 2. ALL CONCRETE FOR SIDEWALKS SHALL BE 4000 PSI AT 28 DAYS WITH TRANSVERSE BROOM FINISH PAVEMENT HINGE AND CROSS SLOPE. CONCRETE MIN. SLOPE MIN. SLOPE SIDEWALK 3. SIDEWALKS GREATER THAN 8% IN GRADE SHALL BE STEPPED IN ACCORDANCE WITH THE NEW STRAWBALES OR SILTFENCE YORK STATE BUILDING CODE REQUIREMENTS. FINISH GRADE GRADE SIDEWALK DETAIL NOTES: 1. AREA CHOSEN FOR STOCKPILING OPERATIONS SHALL BE DRY AND STABLE. SCALE: N.T.S. SLOPE 1:12 2. MAXIMUM SLOPE OF STOCKPILE SHALL BE 1:2. GRASS AREA NATIVE SOIL VARIES CURB TRANSITION 1/4"X8"X24" STEEL (CONCRETE TYP) 3. UPON COMPLETION OF SOIL STOCKPILING, EACH PILE SHALL BE SURROUNDED A WITH 4'-0" MIN PLATE (WELDED) EITHER SILT FENCING OR STRAWBALES, THEN STABILIZED WITH VEGETATION OR COVERED. 1'-6" MIN 5'-0" MIN 4. SEE SPECIFICATIONS (THIS MANUAL) FOR INSTALLATION OF SILTFENCE.
    [Show full text]
  • Flexibility in Highway Design
    Flexibility in Highway Design U.S. Department of Transportation Federal Highway Administration Page i This page intentionally left blank. Page ii A Message from the Administrator Dear Colleague: One of the greatest challenges the highway community faces is providing safe, efficient transportation service that conserves, and even enhances the environmental, scenic, historic, and community resources that are so vital to our way of life. This guide will help you meet that challenge. The Federal Highway Administration (FHWA) has been pleased to work with the American Association of State Highway and Transportation Officials and other interested groups, including the Bicycle Federation of America, the National Trust for Historic Preservation, and Scenic America, to develop this publication. It identifies and explains the opportunities, flexibilities, and constraints facing designers and design teams responsible for the development of transportation facilities. This guide does not attempt to create new standards. Rather, the guide builds on the flexibility in current laws and regulations to explore opportunities to use flexible design as a tool to help sustain important community interests without compromising safety. To do so, this guide stresses the need to identify and discuss those flexibilities and to continue breaking down barriers that sometimes make it difficult for highway designers to be aware of local concerns of interested organizations and citizens. The partnership formed to develop this guidance grew out of the design-related provisions of the Intermodal Surface Transportation Efficiency Act of 1991 and the National Highway System Designation Act of 1995. Congress provided dramatic new flexibilities in funding, stressed the importance of preserving historic and scenic values, and provided for enhancing communities through transportation improvements.
    [Show full text]
  • Pearl District Existing Conditions Report
    Pearl District Access and Circulation Plan Existing Conditions Report Introduction This report reviews existing conditions related to land use and transportation in the study area. The Pearl District is located within the larger River District Urban Renewal Area, and is bordered by NW Broadway Avenue to the east, Interstate 405 to the west, W Burnside to the south, and the Willamette River to the north (Map 1). Below is a brief summary of existing conditions. For more detailed discussion of the transportation issues in the area, additional information, data, and maps are provided following the summary. Summary The Pearl District has street system and urban form characteristics that are similar to the Downtown and Old Town/Chinatown neighborhoods, with generally the same 200‐foot by 200‐foot block grid, and dense, mixed commercial/residential development. However, unlike its neighbors, much of the Pearl has been almost entirely rebuilt over the last 15 years with a predominance of residential construction. Fueled by infrastructure investments and a set of policies and development agreements following the River District Urban Renewal Area’s creation in 1998, the District has experienced rapid residential and commercial growth. The urban neighborhood built through these efforts has become a national model for inner city redevelopment. The District has many of the transportation characteristics of healthy, mature, 24‐hour mixed use areas, including high pedestrian and transit use, low reliance on the automobile compared to suburban areas, and a mix of residential, office, institutional and retail uses. As a result, Pearl residents, employers and visitors travel half as much by car as the regional average, and have much lower carbon emissions per capita from transportation sources.
    [Show full text]