Mchw series 600 Series 100 Preliminaries Series 200 Site Clearance Series 300 Fencing (05/01) Series 400 Road Restraint Systems (Vehicle and Pedestrian) (05/04) Series 500 Drainage and Service Ducts Series 600 Earthworks Series 700 Pavements Series 800 Not taken up Series 900 Not taken up Series 1000 Not taken up Series 1100 Kerbs, Footways and Paved Areas Series. SERIES 2600 MISCELLANEOUS Contents Clause TitlePage 2601 Bedding Mortar 2 2602 Concrete for Ancillary Purposes 5 2603 Porous No Fines Concrete 6 2604 Plastic Coating to Fencing Posts, Gates and Ancillaries 6 2605 Plastic Coated High Tensile Wire 6 2606 Cored Thermoplastic Node Markers 7 2607 Granolithic Concrete Rendering and Screed 7 1 (02/16) This Series is part of the Specification for Highway Works. SERIES 100 PRELIMINARIES Contents Clause Title Page 101 (05/14) Temporary Accommodation and Equipment for the Overseeing Organisation 2 102 (05/14) Vehicles for the Overseeing Organisation 2 103 (05/14) Radio Communication System for the Overseeing Organisation 3 #104 (05/14) Standards, Quality Management and Acceptance 3 SERIES NG 600 EARTHWORKS Contents Clause Title Page NG 600 (02/16) (02/16) Introduction 3 NG 601 (02/16) Classification, Definition and Uses of Earthworks Materials and Table 6/1: Acceptable Earthworks Materials: Classification and Compaction Requirements 4 NG 602 (02/16) General Requirements 6 NG 603 (02/16) Forming of Cuttings and Cutting Volume I Specification for Highway Works O o Amendment - November 2005 Series 600 Earthworks 32 0 O O O E O o Series 500 Drainage and Service Ducts DRAINAGE AND SERVICE DUCTS 2 501 (05/01) Pipes for Drainage and for Service Ducts General 1 Where the term drain is used in this Series it shall be deemed to include the terms sewer and piped culvert. It classifies earthworks materials into acceptable material that can be used in permanent works, and unacceptable materials that require processing or cannot be used. Page 65, Table 6/2 . Very poor foundation conditions. co. Provides guidance for preparing contracts to be used for construction, improvement or maintenance of trunk roads and motorways. Apr 8, 2016 · 5. The SHW should be used to satisfy the compaction requirements of BS EN 1997-1:2004, 5. It contains specifications for various types of earthworks including excavations, fills, compaction, stabilization and other earthworks activities. Whilst this Series is Apr 17, 2020 · The MCHW Specification Series 600 ensures that any soft spots are removed from the foundation and replaced with suitable material. Specification for Highway Works: Series 600: Table. Introduces the collection of documents forming the Manual of Contract Documents for Highway Works system, detailing the updating procedure, scope, status, UK coverage, framework, cross referencing, model contract documents, document control, archiving and implementation. Provides implementation requirements for their use in trunk road contracts in the UK. This will ensure that any differential settlement for a relatively short span box will be negligible. Introduces the Specification for Highway works, Notes for guidance, Highway construction details and Bills of quantities. The NRA Specification for Road Works (NRA MCDRW), Series 600 – Earthworks, dated March 2013 is amended as follows:- 1. Primarily, the specifications set forth minimum. The Method Compaction Specification (MCHW SHW Volume 1 Series 600) requires compacted fill to receive a set number of passes by plant with a minimum static mass (kg/m) to achieve compacted layers of specified maximum thickness. The launch has: brought the DMRB up to date; made it less ambiguous, more concise and easier to use; enabled a digital framework for standards content that will support innovation in digital design, construction and operation of highways infrastructure 73 of Series 1600 and need not be separately measured. SERIES NG 600 EARTHWORKS Contents Clause Title Page NG 600 (02/16) (02/16) Introduction 3 NG 601 (02/16) Classification, Definition and Uses of Earthworks Materials and Table 6/1: Acceptable Earthworks Materials: Classification and Compaction Requirements 4 NG 602 (02/16) General Requirements 6 NG 603 (02/16) Forming of Cuttings and Cutting Design Manual for Roads and Bridges. Manual of contract documents for highway works (MCHW). 3. Series 600) SITE INVESTIGATION SUPERFICIAL Organic Soil Very soft to firm fibrous to amorphous PEAT. Volume 2 Notes for Guidance on the Specifications for Highway Works Series NG 600 Earthworks 5 NG 602 General Requirements 1 Special requirements for determining acceptability, eg. Series 000 Introduction. The document aims to specify requirements and standards for constructing Jan 19, 1996 · Both the DMRB and the MCHW are national standards applicable throughout the UK, produced by the Highways England in conjunction with the governments of Wales, Scotland and Northern Ireland. 3 5 3. 1. Design Manual for Roads and Bridges. This document provides specifications for highway works related to earthworks. Whilst this Series is particularly relevant to the subject matter in its title it must be read in conjunction with the general requirements in Series 000 and 100 and with other Series relevant to the specification of the particular works to be undertaken. uk on 18-Mar-2025, published: 31-Oct-2022 Amendment – October 2022 Volume 1 Series 600 Seciication or Highay Wors Earthors Amendment – February 2016 3 EARTHWORKS #601 (02/16) Classification, Definitions and Uses of Earthworks Materials (02/16) General 0 (02/16) This Series is part of the Specification for Highway Works. National Highways, 2022. It covers topics such as cuttings, fills, foundations, watercourses, geotextiles, capping, topsoiling, landscape areas and ground improvement. We publish associated guidance documents which support the UK Highway Standards defined in both the DMRB and the MCHW. Current Supplement. amendment - may 2009 manual of contract documents for highway works Downloaded from https://www. This contains, within a set of loose-leaf manuals, the primary documents required for the preparation of contracts for Trunk Road Works. All laps in the mesh shall be at least 150 mm. Very low to moderate permeability; flow dominantly through matrix. pdf - Free download as PDF File (. Volume 1 Series 400 Specification for Highway Works Road Restraint Systems (Vehicle and Pedestrian) Amendment – March 2020 2 ROAD RESTRAINT SYSTEMS (VEHICLE AND PEDESTRIAN) 400 (05/17) Road Restraint Systems General 1 (05/17) This Series is part of the Specification for Highway Works. 1 (12/14) This Series is part of the Specification for Highway Works. 18 300 150 125 100 95-100 <15 1A 100 <15 1B <15 1C 0-25 63 Class 300 10-95 600 Size (microns) 2 2A & 2B 100 80-100 15-100 2A & 2B 2C 100 15-80 15 May 5, 2023 · series 700: Amendments to Groups 1*, 2*, 3*,4*, 6* and 10* in line with Specification for Highway Works (MCHW 1) amendments to Series 800 and Series 900. . Examples are given below: Series 300 - Fencing Series 500 – Drainage and Service Ducts Series 600 - Earthworks. 2 All topsoil above cuttings and below embankments should normally be stripped for re-use with Series 600 - Earthworks Dated March 2013 . Mar 31, 2020 · 31 March 2020 . May 4, 2023 · This document contains the specification for earthworks in highway works, including classification, definitions, requirements, tests and standards. indd 4 18/02/2021 12:14 Amendment – February 2021 5 Volume 1 Series 1100 Series NG 600 Earthworks MANUAL OF CONTRACT DOCUMENTS FOR HIGHWAY WORKS 3954559 MCHW Vol 2 Instructions. Ecofill 75 is non-frost susceptible and when compacted, will cure and achieve a stiffness modulus of 5% CBR or 50MPa. Deposits may be selectively worked to shallow depth in some areas. 13 Concrete invert pavings shall be reinforced with a steel fabric complying with Series 1700 having mesh dimensions not greater than 150 mm x 300 mm and a nominal wire size not less than 5 mm. Mar 28, 2023 · All the essential documents on the design, construction and maintenance of highways. (iii) Where Class 2A1 material is being utilised in embankment construction a granular starter layer is required. 4. 9 Materials with a water soluble sulphate content exceeding 1. This document contains specifications for various miscellaneous construction materials used in highway works, including: - Bedding mortar, which is used to support structures and requires compressive strength, proper flow characteristics, and compatibility with adjoining surfaces. Apr 8, 2016 · Series NG 600 Earthworks NG SAMPLE APPENDIX 6/8: (05/01) TOPSOILING [Note to compiler: This should include:] 1 The compiler is required to designate on the Drawings, those areas of Class 5A MCHW 600. Earthworks. MCHW Volume 1 Specification for Highway Works (SHW) Abstract. 2 Reference should be made to the Schedule of Pages Downloaded from https://www. Standard specifications for highway construction serves as a standard reference in construction contracts. MCHW Vol 1 Series 500 web PDF - Free download as PDF File (. Series 000 Introduction INTRODUCTION 2 000 Introduction 1 (05/04) The Specification for Highway Works is published as Volume 1 of the Manual of Contract Documents for Highway Works and in addition to the Introduction contains 27 Series and 8 Lettered Appendices. This document contains specifications for earthworks on highway projects. (March 1998 incorporating amendments up to and including October 2022) (NHW The Manual of Contract Documents for Highway Works (MCHW) is our standard suite of specification documents which are included within a construction contract and the Contractor is required to comply with its contents. standardsforhighways. Document Status. Replace “15-780” with “15 Withdrawn-80” for Class 6F1, 6F2 & 6F3 and size shown of 10mm. p) excavation of unacceptable material (as Series 600 paragraph 19); q) excavation of hard material (as Series 600 paragraph 23); r) excavations in contaminated land and disposal of all contaminated materials including clothing, wash water and any other materials to a licensed site; s) disposal of material (as Series 600 paragraph 39); MCHW Vol 1 Series 400 web PDF. This document provides specifications for road restraint systems used in highway works. txt) or read online for free. Areas where the granular fill and cohesive fill is to be used are shown on the drawing series CDX8620-R06-01 to 06. Series. 3 and the testing requirements of BS EN 1997-1:2004, 5. Roads Amendment – February 2016 2 Volume 2 Series NG 600 Notes for Guidance on the Specification for Highway Works Earthworks EARTHWORKS NG 600 (02/16) Introduction 1 (02/16) The Notes for Guidance on this Series are to assist in the preparation of the Contract. Replaces MCHW Volume 2 Notes for guidance on the specification for highway works. Full amendment details can be found in Specification for highway works (Amendment October 2022). Operational Technology Specifications Library (OTSL) Design Manual for Roads and Bridges. Also sets out approval procedures to be followed by manufacturers and suppliers of goods and materials This document provides guidance on earthworks for highway construction projects. The aggregates act as a capping material to sub-grades providing improved strength and a lower level to Type 1 Sub Base. Series 600 Earthworks Material Properties Required for Acceptability (In Addition to Requirements on Use of Fill Materials in Clause 601 and Testing in Clause 631) Class General Material Description Typical Use Permitted Constituents (All Subject to Requirements of Clause 601 and Appendix 6/1) Acceptable Limits Within: Defined and Tested in A graded aggregate manufactured to Series 600 - Specification for Highway Works. 9 grams of sulphate (expressed as SO3) per litre when tested in accordance with BS 1377: Part 3 shall not be not be placed less than 600 mm below -shoulders where there is no capping; or less than 600 mm below sub-formation where there is capping. 4 Instrumentation for Piles and Embedded Retaining Walls Instrumentation for piles and embedded retaining walls should be measured in accordance with the units, measurement and itemisation set out in Series 600 (paragraphs 134 to 158) expanded as necessary. Roads MCHW Vol 1 Series 2600 web PDF. Class 6F4 fine grading 0/32mm and 6F5 coarse grading 0/80mm. Volume 1 Specification for Highway Works Series 800 Road Pavements – Unbound, Cement and Other Hydraulically Bound Mixtures Amendment – November 2021 3 ROAD PAVEMENTS – UNBOUND,CEMENT AND OTHER HYDRAULICALLYBOUND MIXTURES 801 (02/16) General Requirementsfor Unbound Mixtures (11/21) Unbound Mixtures for Subbase 1 (11/21) This Series is part of the Specification for Highway Works. Whilst this Series is particularly relevant to the subject matter in its title it must be read in conjunction with the general requirements in Series 000 and 100 and with all other Series relevant to the specification for the particular works to be undertaken. uk on 17-Mar-2025, published: May-2009 • SERIES NG 600 EARTHWORKS Contents Clause Title Page NG 600 Introduction 2 NG 601 Classification, Definition and Uses of Earthworks Materials and Table 6/1: Acceptable Earthworks Materials: Classification and Compaction Requirements 3 NG 602 General Requirements 3 NG. 603 Forming of Cuttings and Cutting Slopes 3 ^ NG 604 Excavation for Design Manual for Roads and Bridges. It contains 9 sections covering topics such as general requirements, bituminous mixtures, aggregates for bituminous mixtures, placing and compaction of bituminous mixtures, and different types of bituminous surfacings. It discusses various considerations for the design and specification of earthworks, including: - The use of on-site and imported materials and processing of unacceptable materials - Definitions of terms like "rock" - Inclusion of project-specific requirements in appendices - Showing the extent of formation and Series 600 Acceptable Material Class General Description 1 General Granular fill Grading 3 per source and twice per week Required Moisture Content 1 per 500 m3 Required Dry Density/mc relationship (2. Within the Contract Document, each Local Highway Authority has the ability to amend the Specification for Highway Works to suit their region. uk on 18-Mar-2025, Series 1100, published: 28-Feb-2021 3054480 MCHW Vol 1 Series 1100. All the essential documents on the design, construction and maintenance of highways. It includes 8 sections covering general requirements, transport and construction methods, and material types. MCHW Volume 1 Series 600 Specification for highway works. 201 (02/16 Oct 16, 2023 · Understanding SHW Series 600 (Earthworks Material) Highway construction is a field that demands precision, quality, and safety. It covers various concrete repair methods referenced in BS EN 1504 standards. The Contractor shall design the piped culverts listed in Appendix 1/10 in accordance with the requirements Series 1700. Subjects Design Manual for Roads and Bridges. May 5, 2023 · Series 600 Earthworks Series 700 Road Pavements – General Downloaded from https://www. uk on 20-Mar-2025, Series 0900, published: 31-Jul-2021 25 (07/21) Polymer modified bitumen shall comply with BS EN 14023. May 7, 2022 · 3. uk on 17-Mar-2025, published: 31-Oct-2022 Amendment – October 2022 Design Manual for Roads and Bridges. Replaces MCHW Volume 1 Specification for highway works (SHW). MCHW Volume 0. Scroll further down the page for filters based on volume, or click here for archived copies of MCHW standards. 35 2 1. Whilst this Series is particularly relevant to the subject matter in its title, it must be read in conjunction with the general requirements in Series 000 and 100 and with all other Series relevant to the Specification for the particular works to be undertaken. Whilst this Series is particularly relevant to Replaces MCHW Volume 2 Notes for guidance on the specification for highway works. pdf), Text File (. History. Each material used, each procedure followed, holds the potential to significantly impact the performance and durability of the roads. Whilst this Series is particularly relevant to Downloaded from https://www. This document provides amendments to the Specification for Highway Works (MCHW 1) made in March 2020. Volume 1 Series 600 Seciication or Highay Wors Earthors Amendment – February 2016 3 EARTHWORKS #601 (02/16) Classification, Definitions and Uses of Earthworks Materials (02/16) General 0 (02/16) This Series is part of the Specification for Highway Works. Key changes include: - Updates to road restraint systems (Series 400) to align with DMRB documents. indd Created Date: 10/21/2022 11:16:31 AM This document provides specifications for road pavements constructed with bituminous bound materials. MCHW Vol 1 Instructions web PDF. It provides information on the structure and organization of the specification, defines key terms, lists relevant reference documents, and includes a schedule of publication dates for the specification pages. uk on 18-Mar-2025, published: May-2009 Volume 3- Section 2 Chapter IV - Series 600 Notes for Guidance on the Method of Measurement for Road Works Earthworks March 2013 1 SERIES 600: EARTHWORKS 1 General The Engineer should retain the obligations for the classification, sampling and testing of earthworks materials. Specification for high ways (SHW)_series 600 - Free download as PDF File (. MCHW Vol 1 Series 5700 web PDF. MCHW content will be digitalised, thus enabling machine readability, increased automation in the production of contract documentation and easier Manual of contract documents for highway works (MCHW). (March 1998 incorporating amendments up to and including October 2022) (NHW, 1992). The introduction establishes the framework and Downloaded from https://www. (After MCHW Vol. 5 28 20 Size (microns) BS Series 14 10 6. The seven volumes of the current MCHW will become three with a new style and format: 1) Specification for Highways Works documents; 2) Instructions for Specifiers documents; 3) Method of Measurement. uk on 18-Mar-2025, F Series, published: May-2006 Title MCHW VOLUME 3 SECTION 1 - HIGHWAY CONSTRUCTION DETAILS - F SERIES - DRAINAGE This document is the introduction section of the Manual of Contract Documents for Highway Works Volume 1 Specification for Highway Works. This document provides specifications for concrete repairs to highway structures. This document outlines specifications for various types of unbound, cement, and other hydraulically bound mixtures used in highway works. Very weak and highly compressible deposits; acidic groundwater MCHW-Vol-1-Series-800 - Free download as PDF File (. Whilst this Series is particularly relevant to 1 (02/16) This Series is part of the Specification for Highway Works. If you would like to give feedback on one of our Design Manual for Roads and Bridges (DMRB) or Manual of Contract Documents for Highway Works (MCHW) standards, please use our feedback form. Series 600 Earthworks 58 Percentage by Mass Passing the Size Shown Class Size (mm) 500 1A 1B 1C 100 Size(mm) BS Series 90 75 37. Replaced by MCHW Volume 1 Specification for highway works. Whilst this … The SHW 600 series may be used as the specification for earthworks within an overall contract specification that is not based on the SHW. Civil & Structural Supplement. SERIES 300 FENCING Contents Clause Title Page 301 (05/01) General 2 302 Requirements for Temporary and Permanent Fences 2 303 Temporary Fencing 2 304 (05/01) Timber Quality 2 305 (05/01) Fittings 3 306 (05/01) Permanent Fencing 3 307 Permanent Fencing for Accommodation Works 4 308 Gates and Stiles 4 309 Removing and Re-erecting Uniformity coefficient. Some of the key tests include: Laboratory Testing: Particle size distribution test; Plasticity Index; Moisture Condition Value (MCV) SMC & IDD of Chalk; Undrained shear strength Volume 1 contains the Specification for Highway Works, comprising 26 series covering the following topics: series 200 Site clearance; series 300 Fencing and environmental barriers; series 400 Safety fences, safety barriers and pedestrian guardrails; series 500 Drainage and service ducts; series 600 Earthworks; series 700 Road pavements Ecofill 75 is a Class 9 stabilised material produced and tested to the Standards for Highways, Manual of Contract Documents for Highways Works (MCHW) Volume 1, Specification for Highway Works 600 Series. SERIES 600 EARTHWORKS Contents Clause Title Page #601 Classification, Definitions and Uses of Earthworks Materials 2 602 General Requirements 3 603 Forming of Cuttings and Cutting Slopes 5 604 Excavation for Foundations 6 605 Special Requirements for Class 3 Material 6 606 Watercourses 7 #607 Explosives and Blasting for Excavation 7 608 Series NG 600 Earthworks MCHW Volume 2 Notes for Guidance on the Specification for Highway Works Series NG 600. It contains specifications for drainage and service ducts works for highways. (March 1998 incorporating amendments up to and including October 2022) (NHW, 2022). This is the updated March 1998 edition, incorporating amendments up to and including October 2022. Class General Keep up to date with news from Celtest and explore our expert guides and insights in geo-environmental and geotechnical laboratory testing services. Thus the earthworks contractor needs to ensure adequate coverage of suitable Contract Documents for Highway Works (MCHW), Volume 1, Series 600, Table 6/1. Standards For Highways All the essential documents on the design, construction and maintenance of highways. The Works shall be executed in accordance with the following latest Government (c) The Code of Series 000 Introduction Series 100 Preliminaries Series 200 Site Clearance Series 300 Fencing Series 400 Road Restraint Systems (Vehicle and Pedestrian) Series 500 Drainage and Service Ducts Series 600 Earthworks Series 700 Road Pavements – General Series 800 Road Pavements – Unbound, Cement and Other Hydraulically Bound Mixtures Volume 1 Series 1700 Specifications for Road Works Structural Concrete November 2011 2 STRUCTURAL CONCRETE 1701 Concrete - General for LA Specification of Concrete 1 Concrete shall conform to the requirements of BS 8500-2. 1 (02/20) This Series is part of the Specification for Highways Works. This document is the Manual of Contract Documents for Highway Works Volume 1 Specification for Highway Works. Volume 1 Series 900 Specification for Highway Works Road Pavements – Bituminous Bound Materials May 4, 2023 · SERIES 800 ROAD PAVEMENTS — UNBOUND, CEMENT AND OTHER HYDRAULICALLY BOUND MIXTURES Contents ClauseTitle Page 801 (02/16) General Requirements for Unbound Mixtures 3 802 (02/16) Transport, Laying, Compaction and Trafficking of Unbound Mixtures 7 803 (02/16) Type 1 Unbound Mixtures 11 804 (02/16) Type 2 Unbound Mixtures 13 with all other Series relevant to the specification for the particular works to be undertaken. 9 grams of sulphate (expressed as SO3) per litre when tested in accordance with BS 1377: Part 3 shall not be Series. Series 600 Earthworks Material Properties Required for Acceptability (In Addition to Requirements on Use of Fill Materials in Clause 601 and Testing in Clause 631) Class General Material Description Typical Use Permitted Constituents (All Subject to Requirements of Clause 601 and Appendix 6/1) Acceptable Limits Within: Defined and Tested in Each element of the Specification is given a Series reference number. SERIES 300 FENCING Contents Clause Title Page 301 (05/01) General 2 302 Requirements for Temporary and Permanent Fences 2 303 Temporary Fencing 2 304 (05/01) Timber Quality 2 305 (05/01) Fittings 3 306 (05/01) Permanent Fencing 3 307 Permanent Fencing for Accommodation Works 4 308 Gates and Stiles 4 309 Removing and Re-erecting Series 600 Earthworks `601 631 to 637 640 Acceptable material Required Cross reference should be made to any requirements in Appendix 6/1. The Manual of Contract Documents for Highway Works (MCHW) is our standard suite of specification documents which are included within a construction contract and the Contractor is required to comply with its contents. Series 1700 Structural Concrete Curved Formwork Finishes to Concrete Underbridges and Footbridges Series 1800 Steelwork to Structures Miscellaneous Metalwork Surface Preparation Series 2000 Waterproofing for Concrete Structures Additional Protective Layers Series 2200 Not Taken Up (05/04) Series 2400 Brickwork, Blockwork and Stonework General Extract from Specification for Highways Works Series 600 clauses 613-615, relating to lime and cement stabilisation as capping 613 (02/16) Sub-formation and Capping 1 (02/16) Capping shall be provided only in those locations, and to the extent, particularly stated in the contract specific Appendix 6/7 to be constructed with capping. (March 1998 consolidated version - includes Amendment dated May 2001 and November 2002) Publication Year 1998 Document Status Withdrawn May 4, 2023 · series 700: Amendments to Groups 1*, 2*, 3*,4*, 6* and 10* in line with Specification for Highway Works (MCHW 1) amendments to Series 800 and Series 900. not be placed less than 600 mm below -shoulders where there is no capping; or less than 600 mm below sub-formation where there is capping. In the UK, the Standards for Highway Jul 25, 2023 · Types of Testing within Series 600: Series 600 encompasses several tests, each targeting specific earthworks or aspects of highway construction. Subjects. 5kg rammer) 3 per source and 1 per week Required 2 General Cohesive fill Grading 3 per source and twice per week Required Series 600 Earthworks Series 700 Road Pavements – General Downloaded from https://www. MCHW Volume 1. Abstract. The steel fabric shall be securely fixed to the structure by means of fixings at the bolt Series. 701 (02/16) Pavement Construction 1 (02/16) Road pavements shall be constructed from one of the permitted options described in contract specific Appendix 7/1 and in compliance with this Series and the appropriate Clauses of Series 800, 900 and 1000. Mar 12, 2024 · The Overseeing Organisations of England, Scotland, Wales and Northern Ireland have a comprehensive publication system entitled “Manual of Contract Documents for Highway Works” (MCHW). Volume 1 Series 800 Specification for Highay Wors Road Pavements – Unbound, Cement and Other Hydraulically Bound Mixtures Amendment – February 2016 2 ROAD PAVEMENTS – UNBOUND, CEMENT AND OTHER HYDRAULICALLY BOUND MIXTURES 800 (02/16) General 1 (02/16) This Series is part of the Specification for Highway Works. who classifies and where, and whether trial pitting is required, should be stated in Appendix 6/1 (see also NG 631). It covers specifications for vehicle restraint systems, including general requirements, safety barriers, terminals, transitions, removable Design Manual for Roads and Bridges. Unless otherwise described in Appendix 17/4, concrete shall be specified as designed concrete. dzfvjszpqhtxjrtrshwousxunanngogdxjudzmugnirryrmeeawblcoebbpzhvwlfvnxprsmu