Upgradation of Road from Mirik Murmah Road near Orange Lake School to Paila Gaon Sub-Centre via Ghalay Gaon, Mirik. (L-1.95 km)

CUTTINGExcavation for road way in soil by mechanical means including cutting and pushing the earth to site of embankment up to a distance of 100 metres (average lead 50 metres), ncluding trimming bottom and side slopes in accordance with requirements of lines, grades and cross sections (Reference to MoRT&H's specification clause 301).

PROTECTION WALLEarth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom, backfilling the excavation earth to the extent required and utilising the remaining earth locally for road work (Reference to MoRT&H's specification clause 304).

Construction of dry rubble flooring (shall be laid closely on the prepared base in one or more layers with appropriate bond) at cross drainage works for relatively less important works (Reference to MORT&H's specification 2506).

Plain cement concrete 1:3:6 nominal mix in foundation with crushed stone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days (Reference to MORT&H's specification 2100).

Plum Concrete: Plain cement concrete of nominal mix (1:3:6 ) with coarse aggregate of which stone boulder of size 225 mm to 150mm of 60% of total dry volume to be placed in position as directed by Eng-in charge ,67% - 40 mm down single &33% - 20 mm down bazri , Coarse Sand ,Cement ( 53 grade ) mechanically mixed in 1:3:6 of rest volume and placed in position and compacted by any means as directed including cost of shuttering .

Course Rubble Masonry: Stone masonry work in cement mortar 1:3 for foundation complete all including curing, sufficiently wetted before its layingetc. Asper drawing andTechnical Specifications (Reference to MORT&H's specifications 1400 & 2200) Random Rubble Masonry (ReferencetoMORT&H'sspecification 1405.1.3).

Providing and construction of a gabian structure for retaining earth with segments of wire crates of size 7 m x 3 m x 0.6 m ( 7.50m x 3.0m x0.6m ) each divided into 1.5 m compartments by cross netting, made from 4 mm galvanised steel wire @ 32 kg per 10 sqm having minimum tensile strength of 300 Mpa ( tensile strength 300-450 Mpa ) conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 x 100 mm, filled with boulders with least dimension of 200 mm, all loose ends to be tied with 4 mm galvanised steel wire (Reference to MORT&H's specification 2503.3).

Back filling behind abutment, wing wall and return wall complete including spriklring water and throughly compacted with plate compactor/power rammer in layers not exceeding 150mm compacted thickness as per drawing and Technical Specification (710.1.4 of IRC:78 & MoRTH's specification 2200).

SURFACE DRAINAGE WORKDry 'V' type drain 60 cm wide and 30 cm deep with dressed stone laid in ege including cost and carriage of all material to site

Dry stone box drain 46 cm to 60 cm wide and 30 cm deep with dressed stone from approved quarries including cost and carriage of all material to site.