Estimate on implementation of Road Safety Audit report as per recommendation of CRRI, New Delhi for the work of 20.00 km stretch from Lichubagan Tri-junction to Mohanpur Intersection of NH-108-B in the State of Tripura.

Amount

Excavation in Soil by Manual Means. (A) Excavation in Roadway cutting in soil by using manual means including loading in truck and carrying of cut earth to embankment site with all lifts and lead upto 1000 metre as per MoRT&H Technical Specification clauses of section 300.

Excavation in Soil by Manual Means. (B) Excavation in Roadway cutting in soil by using manual means and carrying of cut earth to embankment site with all lifts and lead upto 50 metre as per MoR&TH Technical Specification clauses of section 300.

Excavation in Soil with Dozer with lead upto 100 metres. Excavation for roadway in soil by mechanical means with Dozer including cutting and pushing the earth to site of embankment upto a distance of 100 m (average lead of 50 metres), including trimming bottom and side slopes in accordance with requirements of lines, grades and cross-sections as per MoRT&H Technical Specification clauses of section 300.

Construction of Embankment with aterial Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with all lifts, transporting to site, spreading, grading to required slope and compacting to meet requirement of ables 300.1 and 300.2 with a lead upto 1000 m as per MoRT&H Technical specification clauses of section 300.

Surface Drains in Ordinary Soil Construction of unlined surface drains of average cross-sectional area 0.4 sqm in ordinary soil to specified lines, grades, levels and dimensions as per MoRT&H Technical Specification clauses of section 300. Excavated material to be used in embankment with a lift upto 3 m and lead of 50 m (average lead 25 m). (B) Manual Means

Construction of Subgrade and Earthen Shoulders Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts and leads, transporting to site , spreading, grading to required slope and compacted to meet requirement of Table 300.2 as per MoRT&H Technical Specification clauses of section 300.

Restoration of Rain Cuts Restoration of rain cuts with soil, moorum gravel or a mixture of these, clearing the loose soil, benching for 300 mm width laying fresh material in layers not exeeding 250 mm and compaction with plate compactor or power rammer to restore the original alignment, level and slopes as per drawings and MoRT&H technical specification Clause 3002.

Maintenance of Earth Shoulder (stripping excess soil) Stripping excess soil from the shoulder surface to achieve the approved level and compacting with plate compactor at OMC as per drawing and MoRT&H technical specification Clause 3003.

Printing new letter and figures of any shade Printing new letter and figures of any shade with synthetic enamel paint black or any other approved colour to give an even shade as per drawings and MoRT&H Technical Specification Clause 801. (ii) English and Roman

Retro- reflectorised Traffic signs Providing and fixing of retro-reflectorised cautionary, mandatory and informatory sign as per IRC:67 made of high intensity grade shetting vide MoRT&H technical specification Clause 801.3, fixed over aluminium sheeting, 1.5 mm thick supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 450 mm x 450 mm x 600 mm, 600 mm below ground level as per drawings and MoRT&H Technical Specification Clause 801. i) 90 cm equilateral triangle

(ii) 60 cm equilateral triangle

(iii) 60 cm circular

(iv) 80 mm x 60 mm rectangular

(vii) 90 cm high octagon

Direction and Place Identification signs upto 0.9 sqm size board. Providing and erecting direction and place identification retroreflectorised sign as per IRC:67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 2 mm thick with area not exceeding 0.9 sqm supported on a mild steel single angle iron post 75 x 75 x 6 mm firmly fixed to the ground by means of properly designed foundation with M15 grade cement concrete 450 x 450 x 600 mm, 600 mm below ground level as per approved drawing and MoRT&H Technical Specification Clause 801.

Direction and Place Identification signs with size more than 0.9 sqm size board. Providing and erecting direction and place identification retroreflectorised sign as per IRC :67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 2 mm thick with area exceeding 0.9 sqm supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm, 2 Nos. firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 450 x 450 x 600 mm, 600 mm below ground level as per approved drawing and MoRT&H Technical Specification Clause 801.

Painting Lines, Dashes, Arrows etc on Roads in Two Coats on New Work Painting lines, dashes, arrows etc on roads in two coats on new work with ready mixed road marking paint conforming to IS:164 on bituminous surface, including cleaning the surface of all dirt, dust and other foreign matter, demarcation at site and traffic control as per MoRT&H Technical Specification Clause 803. (i) Over 10 cm in width

Painting Lines, Dashes, Arrows etc on Roads in Two Coats on Old Work Painting lines, dashes, arrows etc on roads in two coats on old work with ready mixed road marking paint conforming to IS:164 on bituminous surface, including cleaning the surface of all dirt, dust and other foreign matter, demarcation at site and traffic control as per MoRT&H Technical Specification Clause 803. (i) Over 10 cm in width

Road Marking with Hot Applied Thermoplastic Compound with Reflectorising Glass Beads on Bituminous Surface Providing and laying of hot applied thermoplastic compound 5 mm thick including reflectorising glass beads @ 250 gms per sqm area, thickness of 5 mm is exclusive of surface applied glass beads as per IRC:35 . The finished surface to be level, uniform and free from streaks and holes. as per MoRT&H Technical Specification Clause 803.

Kilo Metre Stone Reinforced cement concrete M 15 grade kilometre stone of standard design as per IRC:8, fixing in position including painting and printing, etc. as per drawing and MoRT&H Technical Specification Clause 804. (i) 5th kilometre stone (Precast)

(ii) Ordinary Kilometer stone (Precast)

Road Delineators Providing and installation of delineators (road way indicators, hazard markers, object markers), 80-100 cm high above ground level, painted black and white in 15 cm wide strips, fitted with 80 x 100 mm rectangular or 75 mm dia circular reflectorised panels at the top, buried or pressed into the ground and conforming toIRC-79 and the drawings and as per MoRT&H Technical Specification Clause 805.

Metal Beam Crash Barrier Type - B, "THRIE" : Metal Beam Crash Barrier Providing and erecting a "Thrie" metal beam crash barrier comprising of 3 mm thick corrugated sheet metal beam rail, 85 cm above road/ground level, fixed on ISMC series channel vertical post, 150 x 75 x 5 mm spaced 2 m centre to centre, 2 m high with 1.15 m below ground level, all steel parts and fitments to be alvanised by hot dip process, all fittings to conform to IS:1367 and IS:1364, metal beam rail to be fixed on the vertical post with a space of channel section 150 x 75 x 5 mm, 546 mm long complete as per MoRT&H Technical Specification Clause 810.

Road Markers/Road Stud with Lense Reflector Providing and fixing of road stud 100x 100 mm, die-cast in aluminium, resistant to corrosive effect of salt and grit, fitted with lense reflectors, installed in concrete or asphaltic surface by drilling hole 30 mm upto a depth of 60 mm and bedded in a suitable bituminous grout or epoxy mortar, all as per BS 873 part 4:1973

Bituminous Macadam Providing and laying bituminous macadam with 100-120 TPH hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading premixed with bituminous binder, transported to site, laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction as per MoRT&H Technical Specification Clause 504. (i) Grading I (40 mm nominal size) With Bitumen (60/70 Grade) VG-30

(ii) GradingII (19 mm nominal size) With Bitumen (60/70 Grade) VG-30

RCC Guide Post Pconstruction of RCC guide post of 250 mm dia and total 600 mm long (300 mm below GL) M15 grade cast-in-situ with 20 mm nomonal size aggregate, true to line and grade, tolerance of vertical RCC post not to excees 1 in 500 as per drawing and MoRD Technical Specification Clause 1401.6. A) In Ordinary Soil

20 mm thick Open graded Premix Carpet using Bituminous (viscosity grade/modified bitumen) Binder Providing, laying and rolling of open graded premix carpet of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using viscosity grade bitumen or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a three wheel 80 - 100 kN static roller capacity, finished to required level and grades to be followed by seal coat of either Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 508. Case-I : By Mannual Means (I) Bitumen of BG-30

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 510. A. By manual Means Case-IV Type D (premix with fine sand) (I) Bitumen of BG-30

Tack Coat using hot straight run bitumen of grade VG-30 on bituminous surface Providing and applying Tack Coat using hot straight run bitumen of grade VG-30, including heating the bitumen, spraying the bitumen, cleaning and preparing the existing road surface as per specification: On bituminous surface @ 0.50 Kg/Sqm

Convex Mirror traffic Sign Providing and fixing in pole mounting (50 mm dia steel pole of standard height) 800 mm dia strong unbreakable highly reflective convex mirror body made up of poly carbonate having large viewing angle from standard distance (minimum 6M) firmly fixed to the ground by means of properly designed foundation with M-15 grade cement concrete 450 X 45 X 600 mm, 600 mm below GL as per IRC/MoRT&H standard specification and direction of the Engineer- in - Charge.

Object Hazard Marking traffic Signs Providing and fixing of retro- reflectorised cautionary, mandatory and informatory sign as per IRC :67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 1.5 mm thick supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm firmly fixed to the ground by means of properly designed foundation with M15 grade cement concrete 45 cm x 45 cm x 60 cm, 60 cm below ground level as per IRC/MoRT&H standard specification and direction of the Engineer- in - Charge.

Retro-reflective tapes Providing and fixing of retro- reflectorised warning sign of red, white, yellow high quality retro-reflecting waterproof sheeting tapes size 3" in width of standard specification and direction of the Engineer- in - Charge.

MINTU DEBNATH

ARUN KUMAR DEY