Under SDMF, Slope protection work of landslide at Dehradun Mussoorie motor road Km.-25 near Galogi in Distt. Dehradun.

Amount

Hill Side Slope

Clearing and grubbing road land including uprooting wild vegetation, grass, bushes, shrubs, saplings and trees of girth upto 300 mm, removal of stumps of such trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, upto a lead of 1000 m including removal and disposal of top organic soil not exceeding 150 mm in thickness as per Technical Specification Clause 201. (By mechanical means)

Excavation for roadwork in soil with hydraulic excavator of 0.9 Cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross-sections, and transporting to the embankment location with a lift upto 1.5 m and lead upto 10000 m as per Technical Specification Clause 302.3

Design, providing construction drawings, providing methodology and construction of Reinforced Shored Structure using 50mm wide geosynthetic strap as per technical specification made of polyester yarns and encapsulated in LLDPE sheathing and the minimum coefficient of apparent friction at the top most layer shall be 1.5 including supply of galvanized welded steel grid panels facia made from fusion welding of minimum 8mm diameter bars having tensile strength ≥ 450 N/mm2 and hot-dip galvanization of minimum 500 grams per sqm, aperture size of 100 x 100mm and tensile strength of mesh ≥ 226 kN/m (Long term design strength for 100 years ≥ 123 kN/m), connection shear strength of mesh ≥ 100 kN, supply and fixing of galvanized steel mechanical connectors (500 grams per sqm hot-dip galvanization) with connection strength between soil nail and geosynthetic strap ≥ 100kN and connection strength between geosynthetic strap and mesh ≥ 50kN and supply of non-woven geotextile as per the Bill of Quantity, drawings and technical specification of slope protection works. The inclination of the wall shall be 70 degree with horizontal.

Supply and laying of 120-150mm dressed boulders in front of the Reinforced Earth facia (average thickness 400mm) as per technical specification and drawing including all lead, lift, equiment, tools, tackles, manpower, royalty, taxes, all complete.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 Preparation of levelling pad of 150mm wide and 350mm thick with PCC M-20 concrete as per drawings including manpower, tools, tackles all complete. (Nominal mix 1:2:4)

Supplying and laying of laminated geosynthetic clay liners for impermeable lining having Bentonite mass per unit area (at 0% moisture) = 4,200 grams/sqm, Bentonite mass per unit, GCL mass per unit area (at 12% moisture) = 5,185 grams/sqm, laminated (HDPE/LLDPE) should be minimum 200 Microns sheet and Hydraulic conductivity (k20) = 5.0 x 10-12 m/sec and Index flux (qi) = 1 x 10-9 m3/m2/sec max as per the technical specification including manpower, tools, tackles, all complete. Geosynthetic clay liners (GCLs) should be factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability (Minimum 1 x 10-7 m/s) material supported by geotextile combinations, mechanically held together by needling, stitching, or chemical adhesives.

Supply and laying of drainage geocomposites with mini-pipes which is a multi-linear drainage geocomposites (terminology as per ASTM D4439-2017) composed of non-woven geotextiles that are needle-punched together with perforated, corrugated polypropylene mini-pipes regularly spaced inside and running the length of the roll. The mini pipes have two perforations per corrugation at 180˚ and alternating at 90˚, at a gradient of i=1 having in plane flow capacity of 1L/s/m under 400 kPa during 100h testing.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 Providing and laying PCC M-20 concrete at the berm of the reinforced soil hybrid system including manpower, tools, tackles all complete. (Nominal mix 1:2:4)

Supply and installation of European Assessment Document (EAD) approved high tensile wire mesh made from minimum 3.2mm diameter wire (wire strength ≥ 1770 N/mm2) and having maximum rectangular aperture size of 50mm x 50mm, manufactured in accordance with EN 10223-6, having Zn-Al corrosion protection with class B (150 g/m2 coating) according to EN 10244-2, tensile strength greater than equal to 150 kN/m (longitudinal direction) and greater than equal to150 kN/m (transverse direction), minimum resistance of puncture as 154 kN (as per ASTM A975-11), minimum resistance of puncture (when tested with a deformable soil layer) as 480 kN and minimum shear resistance with spike plate as 240 kN, the spike plates shall have a minimum thickness of 10 mm, a minimum length of 280 mm and a hot dip galvanization according to EN ISO 1461 as per the technical specification and approved drawing.

Supply and installation of galvanized welded steel grid panels made from fusion welding of minimum 6mm diameter bars having tensile strength ≥ 450 N/mm2 and hot-dip galvanization of minimum 500 grams per sqm, aperture size of 100 x 100mm.

Supplying and placing of needle-punched staple fiber non-woven geotextile fabric under the fabric formed mattress with a minimum weight of 160 grams per sqm, minimum thickness 0.75 mm (MARV which is Mean Average Roll Value), minimum wide width tensile strength 0.9 kN/m and minimum grab tensile strength of 0.556 kN (MARV) as per the detailed site requirements and technical specifications.

Design, providing construction drawings, providing methodology, installation and supply of hot rolled fully mill threaded hot-dip galvanized solid geotechnical bars as Soil Nail (galvanization minimum 500 grams per sqm) of 25 mm diameter, having yield strength ≥ 670N/mm2 and ultimate tensile strength ≥ 800N/mm2. This rate includes supply of galvanized nut, plate, coupler, centralizer and galvanized mechanical connectors comprising of hooks/loop with rotational flexibility in both horizontal and vertical planes for 100% load transfer from the geosynthetic strap to the soil nail as per approved drawing and detailed technical specification.

Design, providing construction drawings, providing methodology, installation and supply of hot rolled fully mill threaded hot-dip galvanized solid geotechnical bars as Soil Nail (galvanization minimum 500 grams per sqm) of 28 mm diameter, having yield strength ≥ 670N/mm2 and ultimate tensile strength ≥ 800N/mm2 to fix the high tensile steel mesh. This rate includes supply of galvanized nut, plate, coupler and centralizer as per approved drawing and detailed technical specification.

Supply and installation of semi-perforated PVC pipe wrapped with non-woven geotextile to drain out sub surface water as per approved drawing and detailed technical specification.

Providing and installing prestressed permanent high tensile strand grouted DCP anchor of required design capacity of 797kN/1594kN (SLS/ULS) and in accordance with BS: 8081-2015/BSEN1537-2013/IS: 10270 and detailed specification as enclosed in the tender document based on provided data such as service life of anchor, design load, soil investigation report using 6 nos HTS strand of diameter of 15.2mm and minimum tensile strength of 1860N/mm2. The anchors shall have the fixed length and free length as per detailed design and as per pull out criteria. Rate shall include drilling through over burden, all type of soil, weathered/hard rock with either rotary/pneumatic percussion method, flushing the hole, conduct Water Pressure test to achieve required refusable criteria at fixed length, fabrication & installation of anchors, stressing and testing of anchors at proof load after grout at fixed length achieving its strength to its capacity level and anchoring to the desired locking force level, providing DCP (Double Corrosion Protection system in accordance with BS-8081-2015 & BSEN-1537-2013).

Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specifications. RCC Grade M35 e for Anchor Block. Using concrete mixer

Steel Reinforcement (HYSD Bars) - Fe500/500D for Anchor Block

Providing and constructing gabian structures for drops and guides with wire crates of size 2 m x 1 m x 0.3 m each divided into 1m compartments by cross netting, made from 4 mm galvanised steel wire @ 32 kg per 10 sqm having minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 mm x 100 mm, filled with boulders with least dimension of 200 mm, all loose ends to be securely tied with 4 mm galvanised steel wire.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 M 20 grade plain cement concrete for construction of "drops and guides" ( in steps of 2 x 2 m ), to drain the rain water from culvert during rainy season for dissipating the energy, as per approved drawing and guidance of engineer - in - charge. (Nominal mix 1:2:4)

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 M 20 grade plain cement concrete for construction of catchment drain including tools tackles and formworks , manpower etc. as per approved drawing and guidance of engineer - in - charge. (Nominal mix 1:2:4)

Valley Side Slope

Clearing and grubbing road land including uprooting wild vegetation, grass, bushes, shrubs, saplings and trees of girth upto 300 mm, removal of stumps of such trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, upto a lead of 1000 m including removal and disposal of top organic soil not exceeding 150 mm in thickness as per Technical Specification Clause 201. (By mechanical means)

Excavation for roadwork in soil with hydraulic excavator of 0.9 Cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross-sections, and transporting to the embankment location with a lift upto 1.5 m and lead upto 10000 m as per Technical Specification Clause 302.3

Design, providing construction drawings, providing methodology and construction of Reinforced Shored Structure using 50mm wide geosynthetic strap as per technical specification made of polyester yarns and encapsulated in LLDPE sheathing and the minimum coefficient of apparent friction at the top most layer shall be 1.5 including supply of galvanized welded steel grid panels facia made from fusion welding of minimum 8mm diameter bars having tensile strength ≥ 450 N/mm2 and hot-dip galvanization of minimum 500 grams per sqm, aperture size of 100 x 100mm and tensile strength of mesh ≥ 226 kN/m (Long term design strength for 100 years ≥ 123 kN/m), connection shear strength of mesh ≥ 100 kN, supply and fixing of galvanized steel mechanical connectors (500 grams per sqm hot-dip galvanization) with connection strength between soil nail and geosynthetic strap ≥ 100kN and connection strength between geosynthetic strap and mesh ≥ 50kN and supply of non-woven geotextile as per the Bill of Quantity, drawings and technical specification of slope protection works. The inclination of the wall shall be 70 degree with horizontal.

Supply and laying of 120-150mm dressed boulders in front of the Reinforced Earth facia (average thickness 400mm) as per technical specification and drawing including all lead, lift, equiment, tools, tackles, manpower, royalty, taxes, all complete.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 Preparation of levelling pad of 150mm wide and 350mm thick with PCC M-20 concrete as per drawings including manpower, tools, tackles all complete. (Nominal mix 1:2:4)

Supplying and laying of laminated geosynthetic clay liners for impermeable lining having Bentonite mass per unit area (at 0% moisture) = 4,200 grams/sqm, Bentonite mass per unit, GCL mass per unit area (at 12% moisture) = 5,185 grams/sqm, laminated (HDPE/LLDPE) should be minimum 200 Microns sheet and Hydraulic conductivity (k20) = 5.0 x 10-12 m/sec and Index flux (qi) = 1 x 10-9 m3/m2/sec max as per the technical specification including manpower, tools, tackles, all complete. Geosynthetic clay liners (GCLs) should be factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability (Minimum 1 x 10-7 m/s) material supported by geotextile combinations, mechanically held together by needling, stitching, or chemical adhesives.

Supply and laying of drainage geocomposites with mini-pipes which is a multi-linear drainage geocomposites (terminology as per ASTM D4439-2017) composed of non-woven geotextiles that are needle-punched together with perforated, corrugated polypropylene mini-pipes regularly spaced inside and running the length of the roll. The mini pipes have two perforations per corrugation at 180˚ and alternating at 90˚, at a gradient of i=1 having in plane flow capacity of 1L/s/m under 400 kPa during 100h testing.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 Providing and laying PCC M-20 concrete at the berm of the reinforced soil hybrid system including manpower, tools, tackles all complete. (Nominal mix 1:2:4)

Supplying and placing of needle-punched staple fiber non-woven geotextile fabric under the fabric formed mattress with a minimum weight of 160 grams per sqm, minimum thickness 0.75 mm (MARV which is Mean Average Roll Value), minimum wide width tensile strength 0.9 kN/m and minimum grab tensile strength of 0.556 kN (MARV) as per the detailed site requirements and technical specifications.

Design, providing construction drawings, providing methodology, installation and supply of hot rolled fully mill threaded hot-dip galvanized solid geotechnical bars as Soil Nail (galvanization minimum 500 grams per sqm) of 25 mm diameter, having yield strength ≥ 670N/mm2 and ultimate tensile strength ≥ 800N/mm2. This rate includes supply of galvanized nut, plate, coupler, centralizer and galvanized mechanical connectors comprising of hooks/loop with rotational flexibility in both horizontal and vertical planes for 100% load transfer from the geosynthetic strap to the soil nail as per approved drawing and detailed technical specification.

Supply and installation of semi-perforated PVC pipe wrapped with non-woven geotextile to drain out sub surface water as per approved drawing and detailed technical specification.

Providing and constructing gabian structures for drops and guides with wire crates of size 2 m x 1 m x 0.3 m each divided into 1m compartments by cross netting, made from 4 mm galvanised steel wire @ 32 kg per 10 sqm having minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 mm x 100 mm, filled with boulders with least dimension of 200 mm, all loose ends to be securely tied with 4 mm galvanised steel wire.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 M 20 grade plain cement concrete for construction of "drops and guides" ( in steps of 2 x 2 m ), to drain the rain water from culvert during rainy season for dissipating the energy, as per approved drawing and guidance of engineer - in - charge. (Nominal mix 1:2:4)

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 M 20 grade plain cement concrete for construction of catchment drain including tools tackles and formworks , manpower etc. as per approved drawing and guidance of engineer - in - charge. (Nominal mix 1:2:4)

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 1 as per Technical Specification Clause 405. [By Manual Means]

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 2 as per Technical Specification Clause 405. [By Manual Means]

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 3 as per Technical Specification Clause 405. [By Manual Means]

Providing and laying Dense Bituminous Macadam with the use of batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder @ 4.25% by weight of total mix of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRTH specification clause No. 507 complete in all respects for Grading I- 37.5mm Nominal size

Providing and laying Bituminous Concrete with the use of batch type hot mix plant using crushed aggregates of specified grading, premixed with bituminous binder, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 509 complete in all respects for Grading-I (bituminous binder @ 5.2 % of mix)

Providing and erecting a "W" metal beam crash barrier comprising of 3 mm thick corrugated sheet metal beam rail, 70 cm above road/ground level, fixed on ISMC series channel vertical post, 150 x 75 x 5 mm spaced 2 m centre to centre, 1.8 m high, 1.1 m below ground/road level, all steel parts and fitments to be galvanised 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 spacer of channel section 150 x 75 x 5 mm, 330 mm long complete as per clause 810 ( if Concrete Required for Vertical post Fixing will be paid extra)

M/S HimalayanConstruction