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    Irc - Gov.in - sp.063.2018 Removed

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    AA DESIGN CUNSULTANCY
    The document provides design guidelines for concrete block pavements based on international experience. It recommends a design catalogue in Table 1 that specifies layer thicknesses based on traffic levels and subgrade strength. For lightly trafficked pavements like sidewalks, it recommends 60mm thick blocks over 30mm sand and 200mm base. For commercial traffic, it recommends thicker sections with 80-100mm blocks, 30mm sand, 250mm base. For heavy industrial traffic, it recommends 100-120mm blocks, 30mm sand, 250mm base or 150mm base with 100mm drainage layer.

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    Irc - Gov.in - sp.063.2018 Removed

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    AA DESIGN CUNSULTANCY
    45 views2 pages
    The document provides design guidelines for concrete block pavements based on international experience. It recommends a design catalogue in Table 1 that specifies layer thicknesses based on traffic levels and subgrade strength. For lightly trafficked pavements like sidewalks, it recommends 60mm thick blocks over 30mm sand and 200mm base. For commercial traffic, it recommends thicker sections with 80-100mm blocks, 30mm sand, 250mm base. For heavy industrial traffic, it recommends 100-120mm blocks, 30mm sand, 250mm base or 150mm base with 100mm drainage layer.

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    IRC SP CODE

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    irc.gov.in.sp.063.2018_removed

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    The document provides design guidelines for concrete block pavements based on international experience. It recommends a design catalogue in Table 1 that specifies layer thicknesses based on traffic levels and subgrade strength. For lightly trafficked pavements like sidewalks, it recommends 60mm thick blocks over 30mm sand and 200mm base. For commercial traffic, it recommends thicker sections with 80-100mm blocks, 30mm sand, 250mm base. For heavy industrial traffic, it recommends 100-120mm blocks, 30mm sand, 250mm base or 150mm base with 100mm drainage layer.

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    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    45 views2 pages

    Irc - Gov.in - sp.063.2018 Removed

    Uploaded by

    AA DESIGN CUNSULTANCY
    The document provides design guidelines for concrete block pavements based on international experience. It recommends a design catalogue in Table 1 that specifies layer thicknesses based on traffic levels and subgrade strength. For lightly trafficked pavements like sidewalks, it recommends 60mm thick blocks over 30mm sand and 200mm base. For commercial traffic, it recommends thicker sections with 80-100mm blocks, 30mm sand, 250mm base. For heavy industrial traffic, it recommends 100-120mm blocks, 30mm sand, 250mm base or 150mm base with 100mm drainage layer.

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    IRC:SP:63-2018

    The road kerbs provided on the edge of the road also serve the purpose of edge blocks as
    shown in Fig. 8. In case the kerbs are not provided, it has to be replaced by edge strips.

    5 STRUCTURAL DESIGN OF CONCRETE BLOCK PAVEMENT

    5.1 Suggested Design Procedure


    It is recommended that the catalogue of design as given in Table 1 may be used.

    5.2 Lightly Trafficked Pavements


    Pedestrian side-walks, footpaths, cycle tracks, car parks and malls are lightly trafficked. In
    such situations, the pavement can consist of blocks 60 mm thick laid over a sand bedding
    30 ± 5 mm and a base course 200 mm thick. The base course can be in WBM/WMM/crushed
    stone/soil-cement. This design can be adopted for the range of subgrade soils met within
    India. A typical cross-section is given in Fig. 5.

    5.3 Block Pavements Subjected to Commercial Traffic


    City streets and highway (except National-Highways and Expressways) sections subjected
    to commercial traffic (trucks and buses) require a heavier section. Though design methods
    based on empirical approach and mechanistic behaviour are available, enough work has not
    been done in India to evolve the country’s own design procedure. In the absence of such
    knowledge, the ad-hoc design catalogues based on international experience as given in
    Table 1 are suggested for adoption. A design life of 20 years can be considered for determining
    the repetitions of standard axles.
    5.4 For block pavements for industrial applications like container yard and port wharf
    and roads and warehouses the following thickness is recommended:
    Block 100 -120 mm
    Sand Bedding 30 ± 5 mm
    Cement bound base 300 mm
    Granular sub-base (out of which
    the bottom 150 mm is a drainage layer) 300 mm

    13
    IRC:SP:63-2018

    6 MATERIALS

    6.1 General
    The quality of materials, cement concrete strength, durability and dimensional tolerances,
    etc. are of great importance for the satisfactory performance of block pavements. These
    aspects and the block manufacturing process itself, which immensely influences the quality
    of paving blocks, are broadly outlined in the subsequent paragraphs. The desired engineering
    properties of bedding/joint filling sand layer beneath the block, the base course and sub-base
    materials are also described.

    Table 1 Design Catalogue for Pavement Thickness

    Traffic and Road Type Types of Layers Subgrade CBR (%) Grade of
    Above 10 5-10 Block
    • Cycle Tracks, Block Thickness 60 mm 60 mm
    Pedestrian Footpaths Sand Bed 30±5 mm 30±5 mm M-30
    Granulated Subase 200 mm 200 mm
    • Commercial Traffic Block Thickness 60-80 mm 60-80 mm
    Axle Load Repetitions Sand Bed 30±5 mm 30±5 mm
    less than 10 msa WBM/WMM Base 250 mm 250 mm M-40
    • Residential Streets Granular Sub-base 200 mm 250 mm
    • Commercial traffic Block Thickness 80-100 mm 80-100 mm
    Axle Load Repetitions
    10-20 msa Sand Bed 30±5 mm 30±5 mm
    • Collector Streets M-40
    Industrial Streets, Bus WBM/WMM Base 250 mm 250 mm
    and Truck Parking Areas Granular Sub-base 200 mm 250 mm

    • Commercial traffic Block Thickness 100-120 100-120


    (Container yard and Sand Bed 30 ±5 mm 30 ±5 mm
    see ports) Axle Load WBM/WMM Base 250 mm 250 mm
    Repetitions or
    20-50 msa WBM/WMM Base 150 mm 150 mm M-50
    and DLC over it* 100 mm 100 mm
    • Arterial Streets
    Granular Sub-base 200 mm 250 mm

    Notes: 1. Thickness of layers given above are in mm.


    2. Granular sub-base should have at least 150 mm layer at the bottom.
    3. A typical cross-section is given in Fig. 5 and Fig. 6.
    4. If the subgrade soil has a CBR of less than 5%, it should be improved by suitable
    stabilisation technique to bring the CBR value to 5%.

    14

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