Chapter 5 DESIGN STANDARDS AND SPECIFICATIONS

1 Chapter 5 DESIGN STANDARDS AND SPECIFICATIONS KD5: Final Feasibility Report including Schedules Consultancy Services for Preparation of Feasibility Report for Construction of Bridges including Approaches on Tamu Kyigone Kalewa Road Section from km to km in Myanmar MEA 5-1

2 5. DESIGN STANDARDS AND SPECIFICATIONS DESIGN STANDARDS for this project will conform with Manual of Standard & SPECIFICATIONS for two laning of State Highways (IRC: SP:73-2007) , Specification for Road and Bridge Work by Government of India, MORTH and various relevant IRC STANDARDS and BIS STANDARDS . Also Geometric DESIGN STANDARDS for Highways published by Ministry of Construction, Public Works, Myanmar, also reviewed for understanding. For comparison, DESIGN STANDARDS of Myanmar also summarised below, however Indian STANDARDS has been adopted for the project. GENERAL CONSIDERATIONS FOR ROAD/ BRIDGE APPROACHES a) This section lays down the STANDARDS for Geometric DESIGN and general features for existing Bridge approaches/ existing road to two-lane with shoulders.

3 B) The Geometric DESIGN of the Project Highway will conform to the STANDARDS set out in this Chapter as a minimum. c) Existing Horizontal Curves which are found deficient in radius, layout, transition lengths or super-elevation will be corrected to the specified STANDARDS . Similarly deficiencies in the vertical alignment will also be corrected. STANDARDS which will be used for this project are summarised in Table Table : DESIGN STANDARDS Sl. No. DESIGN Specification Unit IRC STANDARDS Terrain Plain Rolling Hilly Steep 1 DESIGN Speed Km/ hr i) Ruling 100 80 50 40 ii) Minimum 80 65 40 30 2 ROW m i) Built-up areas 30 30 30 30 ii) Open areas 70 70 70 70 3 Bridge Cross section (With Footpath) Overall Width m Carriageway on Bridge Section m Crash Barrier ( ) ( ) ( ) ( ) Foot Path m 3 ( ) 3 ( ) KD5.

4 Final Feasibility Report including Schedules Consultancy Services for Preparation of Feasibility Report for Construction of Bridges including Approaches on Tamu Kyigone Kalewa Road Section from km to km in Myanmar MEA 5-2 Sl.

5 No. DESIGN Specification Unit IRC STANDARDS Terrain Plain Rolling Hilly Steep Railing m ( ) ( ) ( ) ( ) Safety Kerbs m - - - - 4 Bridge Cross section (Without Footpath) Overall Width m Carriageway on Bridge Section m Crash Barrier ( ) ( ) ( ) ( ) Foot Path m - - - - Railing m - - - - Safety Kerbs ( ) ( ) ( ) ( ) 5 Road cross section Width of Carriageway for Road section m 6 Width of Shoulder for road section m i) Open Country areas Hill Side Valley Side m ii) Built-up areas Hill Side Valley Side m 7 Minimum Radii of Horizontal curve m i) Desirable 360 230 90 60 ii) Minimum 230 155 60 30 8 Camber/ crossfall % i) Bituminous ii) Cement Concrete iii) Metal/ Gravel iv) Earthen KD5.

6 Final Feasibility Report including Schedules Consultancy Services for Preparation of Feasibility Report for Construction of Bridges including Approaches on Tamu Kyigone Kalewa Road Section from km to km in Myanmar MEA 5-3 Sl.

7 No. DESIGN Specification Unit IRC STANDARDS Terrain Plain Rolling Hilly Steep 9 Superelevation (Max.) m 10 Gradient % i) Ruling ii) Limiting % 11 Sight Distance m i) Stopping 180 120 60 45 ii) Intermediate 360 240 120 90 ii) Overtaking 640 470 235 165 12 Roadway Width m m (exclusive of parapets and drain) Geometric DESIGN STANDARDS for Highways published by Ministry of Construction, Public Works, Myanmar, are summarised in Table Table : Geometric DESIGN STANDARDS for Highways, Myanmar Sl. No. DESIGN Specification Myanmar STANDARDS 1 DESIGN Speed (mile/hour) a) Flat Country 60 b) Rolling Country 50 c) Mountainous Country 40 2 Number of Lanes 2 3 Width of Lane (feet) 11 (min.

8 12 (desirable) 4 Right of Way (feet) 100 (min.) 150 (desirable) 5 Minimum width of shoulder (feet) a) Flat Country 8 b) Rolling Country 8 c) Mountainous Country 6 6 Minimum width of Formation (feet) a) Flat Country 40 KD5: Final Feasibility Report including Schedules Consultancy Services for Preparation of Feasibility Report for Construction of Bridges including Approaches on Tamu Kyigone Kalewa Road Section from km to km in Myanmar MEA 5-4

9 Sl. No. DESIGN Specification Myanmar STANDARDS b) Rolling Country 40 c) Mountainous Country 36 7 Earth Slope a) Flat or Rolling Country 2:1 b) Mountainous Country i) Cut height - 0 -4 feet 2:1 ii) Cut height - 4 -20 feet 13/4:1 iii) Cut height - Over 20 feet 11/2:1 8 Maximum Grades (%) a) Flat Country 3 b) Rolling Country 4 c) Mountainous Country 6 9 Maximum Superelevation 10 10 Bridges:- kerb to Kerb Width (feet) 26 (min.) 30 (desirable) 11 Width of Culverts Full Shoulder Width PROPOSED TYPICAL CROSS SECTIONS The geometric standard as given in IRC:SP:73-2007 will be followed. The cross section for major/ minor bridges coming over project road will be as per MORTH notification on Width of bridges on 2 lane National Highways (with and without Footpath) letter No.

10 RW/NH/33044/2/88-S&R(B) dated 24th March 2009 and Width of bridges on 2 lane National Highways on Hills (with and without Footpath) letter no. RW/NH/33044/2/88-S&R(B) dated 21st Oct 2009 and IRC:SP:73-2007 are as under:- i) Bridge Section 1- Two lane carriageway with footpath in Plain and Rolling Terrain ii) Bridge Section 2-Two lane carriageway without footpath in Plain and Rolling Terrain iii) Bridge Section 3-Two lane carriageway without footpath in Hill Terrain iv) TCS-1 : 2-lane Bridge approaches Both side fill slope (Plain and Rolling Terrain) v) TCS-1A : 2-lane Bridge approaches Both side fill slope (New Alignment) vi) TCS-2 : 2-lane Bridge approaches Both side cut slope (Plain and Rolling Terrain) vii) TCS-3 : 2-lane Bridge approaches Both side fill slope (Hilly Terrain) viii) TCS-4.