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    Four Laning Irc SP 84 2019

    Uploaded by

    Suyog Gore
    This document provides design standards for four-laning highways. It specifies minimum requirements for design speed, right-of-way width, lane width, median widths, shoulder widths, roadway widths, service roads, parking bays, bridges, and acceleration/deceleration lanes. Design speeds range from 60-100 km/h depending on terrain. Minimum right-of-way is 60m. Lane width is 3.5m. Median widths vary from 2.5-7m depending on terrain and location. Shoulder widths depend on terrain. Capacity is specified as 10,000-60,000 passenger car units per day for level of service B and 20,000-30,000 PCU/day for

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    Four Laning Irc SP 84 2019

    Uploaded by

    Suyog Gore
    5K views3 pages
    This document provides design standards for four-laning highways. It specifies minimum requirements for design speed, right-of-way width, lane width, median widths, shoulder widths, roadway widths, service roads, parking bays, bridges, and acceleration/deceleration lanes. Design speeds range from 60-100 km/h depending on terrain. Minimum right-of-way is 60m. Lane width is 3.5m. Median widths vary from 2.5-7m depending on terrain and location. Shoulder widths depend on terrain. Capacity is specified as 10,000-60,000 passenger car units per day for level of service B and 20,000-30,000 PCU/day for

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    FOUR LANING IRC SP 84 2019.docx

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    This document provides design standards for four-laning highways. It specifies minimum requirements for design speed, right-of-way width, lane width, median widths, shoulder widths, roadway widths, service roads, parking bays, bridges, and acceleration/deceleration lanes. Design speeds range from 60-100 km/h depending on terrain. Minimum right-of-way is 60m. Lane width is 3.5m. Median widths vary from 2.5-7m depending on terrain and location. Shoulder widths depend on terrain. Capacity is specified as 10,000-60,000 passenger car units per day for level of service B and 20,000-30,000 PCU/day for

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    5K views3 pages

    Four Laning Irc SP 84 2019

    Uploaded by

    Suyog Gore
    This document provides design standards for four-laning highways. It specifies minimum requirements for design speed, right-of-way width, lane width, median widths, shoulder widths, roadway widths, service roads, parking bays, bridges, and acceleration/deceleration lanes. Design speeds range from 60-100 km/h depending on terrain. Minimum right-of-way is 60m. Lane width is 3.5m. Median widths vary from 2.5-7m depending on terrain and location. Shoulder widths depend on terrain. Capacity is specified as 10,000-60,000 passenger car units per day for level of service B and 20,000-30,000 PCU/day for

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 3

    IRC SP 84 2019

    FOUR LANING

    Design Speed km/h

    Terrain CS of Ground Ruling Min.


    Plain Up to 25% 100 80
    Mountainous More than 25% 60 40

    ROW

    Minimum 60 m should be available. Would acquire addition land required if any.

    LANE WIDTH Of Carriageway

    3.5m

    MEDIAN Raised/Depressed

    Section Min. Width (m)


    Plain & Rolling Terrain Mountainous and Steep
    Terrain
    Raised* Depressed Raised*
    Open country with 5.0 7.0 2.5
    isolated built-up area
    Built up area 2.5 NA 2.5
    Approach to GSS 5.0 NA 2.5
    *Incl. Kerb shyness of 0.5m on either side.
    SHOULDERS

    Plain & Rolling Terrain

    Section (m) on either side


    Paved Earthen Total
    Open country with Isolated build up area 2.5 1.5 4.0
    Built up area - - -
    Approaches GSS 2.5 - 2.5
    Bridge Approaches 2.5 1.5 4.0

    Mountainous & Steep Terrain

    Section Paved Earthen Total


    Open country with Isolated Hill side 1.5 - 1.5
    build up area Valley side 1.5 1.0 2.5
    Built up area & approaches to Hill Side 0.25+1.5 - 1.75
    grade separated (Raised)
    structures/bridges Valley Side 0.25+1.5 - 1.75
    (Raised)
    Notes:

    I. RT Wall with Parapet is provided on Valley side, the earthen shoulder may not be provided.
    II. RT/RE Wall on either side shall be abutting the paved shoulders & shall have crash barriers on top.

    ROADWAY WIDTH

    CW + Shoulders

    SERVICE ROADS

    WIDTH

    I. In open country with isolated built up area 7 m wide CW + 1.5 m Earthen Shoulders

    II. In built up area 7.5 m wide CW (incl. kerb shyness of 0.25m on


    either side with raised footpath/separator on
    either side)

    If required,

    PARKING BAYS

    Length 20 m and width 3 m

    BRIDGES

    Length of Bridge < 60 m SR is required on both sides of stream, suitably


    DESIGN
    designed 2-lane bridge structure shall be
    provided. SPEED
    Length of Bridge >/= 60 m Separate bridge may not be provided & SR shall Min. 40 km/h
    be merged with Project Highway at 50 m
    distance before Bridge.
    ACCELERATION AND DECELERATION LANES

    Length: Designed for speed differential of 60 km/h

    Width: 5.5 m (min.)

    Taper at merge: 1 in 15 beyond design length

    CAPACITY PCU/D

    Terrain Level of Service ‘B’ Level of Service ‘C’


    Plain and Rolling 10,000 60,000
    Mountainous and Steep 20,000 30,000

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