Submission of Presentation on IRC SP 84-2019.pptx

Presentation on IRC

1. Presentation on Updated Four lane manual (Comparison between IRC:SP:84-2014 & 2019)

2. 2. Geometric Design and General Features 2.6 Shoulders IRC:SP: 84-2014 IRC:SP: 84-2019 Type of section (In plain & Rolling terrain) Width of Paved + Earthen Shoulder Width of Paved + Earthen Shoulder Open country with isolated built up area 1.5 + 2.0 = 3.5 2.5 + 1.5 = 4.0 Built up area 2.0+ 0 = 2.0 2.5 + 0 = 2.5 Approaches to grade separated structures 2.0 + 0 = 2.0 2.5 + 0 = 2.5 Approaches to bridges 1.5 + 2.0 = 3.5 2.5 + 1.5 = 4.0 2.9.3 Super elevation SE is limit to 5% when ROC is More than Desirable Minimum Radius ROC is More than Desirable Minimum Radius and at urban section or falls on major junction. 2.9.5 Sight distance Absolute minimum sight distance Not mentioned the conditions Shall be permitted only on existing road where further improvement is not possible 2.9.6 Vertical Alignment Grade change Not mentioned the conditions Shall not be allowed within 150m

3. 2. Geometric Design and General Features (Cont...) 2.10 Clearances for underpass IRC:SP: 84-2014 IRC:SP: 84-2019 Type of structure Lateral + Vertical Clearance (m) Lateral + Vertical Clearance (m) VUP 12 + 5.5 20 + 5.5 LVUP >10.5 + 3.5 12 + 4.0 SVUP >7 + 3.0 7 + 4.0 Clearance of p roposed structure base above the ground level Not mentioned the conditions Shall be kept 150 mm 2.16 Utility Corridor Spacing provided for crossing underground utilities in built up areas Spacing of 1 km shall be provided Spacing of 0.5 km shall be provided

4. According to IRC:SP:84-2019 According to IRC:SP:84-2014 Transition length is 135 m Transition length is 75 m

5. According to IRC:SP:84-2014 According to IRC:SP:84-2019

6. 3. Intersections and Grade separators 3.2 At -grade Intersection IRC:SP: 84-2014 IRC:SP: 84-2019 Gradient and Level of intersecting road Not mentioned the conditions Excess of 2% will not be allowed at intersections and at least 30m length of the intersecting road beyond junction is at the same level as that of main carriageway at the junction. Design Standards Shall follow IRC:SP:41 Shall follow IRC:SP:41 and also mentioned the some of the design standards like design speed of intersection elements: 60% of Approach speed, design vehicle : Semi-trailer combination, Widening of carriageway depends on Approach speed & taper rates mentioned in below table Speed ( kmph ) Desirable Min. Taper Absolute Min. Taper <50 1:35 1:20 50 to 65 1:40 1:25 66 to 80 1:45 1:30 >80 1:50 1:40 Table 3.1: Taper Rate

7. 3. Intersections and Grade separators(Cont...) 3.4 Grade Separators IRC:SP: 84-2014 IRC:SP: 84-2019 Design Standards Shall follow IRC:SP:92 Shall follow IRC:SP:92 and also mentioned the some of the design standards along with the warrants Design Traffic Not mentioned assessed up to end of Concession period or 20 years, whichever is more, taking into consideration the past trends, likely new development of land, socio-economic changes etc,. Junction Improvement Diagrams Mentioned turning radius along with Approach lengths Instead of turning radius, width is given as 4.5m and Approach length as 120m for all types of structures except flyover (turning radius-15m). 4. Embankments and Cut sections 4.2 Embankment IRC:SP: 84-2014 IRC:SP: 84-2019 Top of Sub grade in case of existing road, road has no history of overtopping shall be at least 0.5m above general ground level. shall be at least 0.6m above general ground level. 5. Pavement Design 5.4.1 Design Requirements for New Flexible Pavement Sections IRC:SP: 84-2014 IRC:SP: 84-2019 Minimum Design Period 15 years or operation period, whichever is more 15 years subjected to the condition that design traffic shall not be less than 20 msa . Stage Construction Permitted Shall not be permitted

8. According to IRC:SP:84-2014 For VUP: According to IRC:SP:84-2019 For VUP:

9. 5. Pavement Design (Cont...) 5.4.3 Pavement Performance Requirements IRC:SP: 84-2014 IRC:SP: 84-2019 Roughness in each lane for new pavement surface < 2000mm/km for each lane in a km length Rigid Pavement: < =2000mm/km for each lane in a km length Flexible Pavement: < =1800mm/km for each lane in a km length Design Traffic (5.5) Concessionaire shall adopt a realistic value of the rate of growth, provided that annual rate of growth of CVs adopted >5% Not mentioned 5.9 Strengthening of Existing Pavements profile corrective course (5.9.2) In detailed explanation not given Some requirements mentioned. Removal of existing bituminous pavement Not mentioned as like in 2019. shall not be necessary, if the finished road is more than 1m high from the existing bituminous surface. 5.10 Paved shoulders and Paved Median Strips Thickness of existing paved shoulders Not mentioned Less than the thickness of adjacent pavement, shall be reconstructed to the new pavement thickness Overlay thinness and composition Not mentioned Uniform on both carriageway and shoulder 5.11 Earthen Shoulders Not mentioned Detailed explanation given

10. 6. Highway Drainage 6.2 Surface Drainage IRC:SP: 84-2014 IRC:SP: 84-2019 Longitudinal Slope shall not be less than Lined drains: 0.3% Unlined drains:1% Lined drains: 0.2% Unlined drains:0.3% 6.4 Drainage where Embankment Height is more than 3m Suitable measures adopted Mentioned about more than 6m not 3m proper protection of slope by turfing /vegetation or by providing side channel 7. Design of Structures 7.1 General IRC:SP: 84-2014 IRC:SP: 84-2019 In built – up sections, embankment/ RE wall/ Retaining wall may be provided up to 5m height 7.5m height Width & Transition of median at culverts, bridge portion Width kept same as that of approaches and Transition of 1 in 30 at unavoidable conditions Width kept same as that of approaches and Transition of 1 in 50 at unavoidable conditions 7.6 Sub – Soil Investigations Clause 7.6.2 about borehole locations Not mentioned Single span structures: at each of the abutment location More than one span: Min one bore at each of Foundation location. For smaller spans: spacing between two bore holes may be kept as 10-12m.

11. According to IRC:SP:84-2014 According to IRC:SP:84-2019

12. 7. Design of Structures (Cont...) 7.9.3 Pile foundation` IRC:SP: 84-2014 IRC:SP: 84-2019 About initial load test before starting pilling work Not mentioned Done on at least two piles for each structure. However structure length <60m, done on at least one pile 9. TRAFFIC CONTROL DEVICES/ ROAD SAFETY DEVICES/ ROAD SIDE 9.2 Road Signs IRC:SP: 84-2014 IRC:SP: 84-2019 At-grade junctions, STOP sign and Speed breaker distance from STOP line 8 to 12m away 5m to 6m away Spacing between two signs, Shall always more than (9.2.6) Not mentioned 0.6*V meters distance (Where V is the 85th percentile speed in kmph ). Placement of Sign Boards Not mentioned Shoulder side of the road but due to terrain & for better visibility, can also be installed on median side Font size of directional information signs placed on highway shall be based on Not mentioned On Highway: Design speed of Highway Slip & Service road: Design speed of Slip/service rd 9.3Road Markings Colour of Parking restriction markings Not mentioned the colour of zig-zag edge line and kerb can be painted yellow colour. Hazard Markings when objects close to road (9.4) painted with black and yellow stripes provided with diagonal or chevron marking or hatch marking

13. 10.Toll Plazas 10.4.10 Electronic Toll Collection IRC:SP: 84-2014 IRC:SP: 84-2019 About Toll collection procedure Both semi-automatic and ETC system of tolling adopted. Hybrid ETC system of tolling shall be adopted & in detailed explanation given. 11. LANDSCAPING AND TREE PLANTATION 11.2.2 Set-back of trees on curves IRC:SP: 84-2014 IRC:SP: 84-2019 In urban/built-up sections, about Tree plantation Not mentioned planted on the raised footpaths, provided the distance between the edge of the kerbs and nearest edge of tree is not less than 2m. 12. PROJECT FACILITIES 12.2 Road Boundary Walls (RBW) IRC:SP: 84-2014 IRC:SP: 84-2019 RB Stone walls Not mentioned Both side of right of way, At ingress and egress points: Reinforced CC 12.7 Bus Bays and Passenger Shelters Location of Bus Bays (12.7.2) Not mentioned 6 principles are given

14. 13. SPECIAL REQUIREMENTS FOR HILL ROADS 13.11 Breast Wall IRC:SP: 84-2014 IRC:SP: 84-2019 Breast wall Not mentioned Breast walls shall be provided and description is given 14. TUNNELS 14.2.4 Vertical Clearance IRC:SP: 84-2014 IRC:SP: 84-2019 Minimum vertical clearance 5m over carriageway 5.5m over Carriageway 14.2.6 Carriageway & Paved Shoulders Carriageway type and width of paved shoulder Carriageway : Cement Concrete Width of PS: 2m on left side and 0.6m edge strip on right side Carriageway : Cement Concrete Width of PS: 3m on left side and 0.5m edge strip on right side 14.2.8 Tunnel Passage Cross passage provision for one traffic lane edge strip of 0.6m, crash barriers and walkways on either side. edge strip of 0.5m, crash barriers and walkways on either side.