Work for prevention of land subsidence and landslides at Bahugunanagar Karnaprayag Block District Chamoli under Honorable Chief Ministers Announcement No 1068 of 2021

Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry,cement concrete,wood work, steel work, including T&Pand scaffolding wherever necessary, sorting the dismantled material,disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 m as per Technical Specification Clause 202.

Excavation in Foundation for retaining,Breast walls etc. in all types of soils ans rocks including all lead, lift and disposal of surplus material as per direction of engineer in charge as per drawing and technical specification Clause 305.1 of MORD Specification

Excavation in Hilly Areas in Ordinary Rock by mechanical means not requiring blasting (With out Dozer). Excavation in hilly area in ordinary rock not requiring blasting by mechanical means without using Dozer including cutting and trimming of slopes and disposal of cut material with a lift upto 1.5 m and lead upto 20 m as per Clause 1603.2.

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 M 10 Nominal mix (1:3:6) including Shuttring, Centring and T &P etc.

Providing and laying reinforced cement concrete in Superstructure as per drawing and technical specifications Clause 800, 1205.4 and 1205.5 R.C.C M 30

Providing and laying reinforced cement concrete in superstructure as per drawing and technical specifications Clasues 800, 1205.4 and 1205.5 R.C.C M 25 including Shuttring, Centring and T&P etc

Providing concrete for plain/ reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 R.C.C grade M 20

Stone masonry in cement mortar for substructure complete as per drawing & technical specification Clauses 702, 704, 1202 and 1204. Coursed rubble masonry (1st sort). In 1:3 cement mortar.

Providing PCC M-20 architectural coping on the top of wing wall, return wall etc. complete as per drawing and technical specification Clauses 615, 710 and 1204.3.11

Supplying, fitting, and placing HYSD bar reinforcement in superstructure completeas per drawing and technical specifications Clauses 1002, 1010 and 1202. Grade Fe 550 D

Providing weep holes in stone masonry, plain concrete Retaining wall with 100 mm dia Perforated PVC pipe extending through the full width of the structures with slope 1(V):20(H) towards drawing face complete as per drawing and technical specification.

Hand Packed stone filling in back of wallls including cost of all materials, royality,T&P etc. complete as per direction of Engineer-in- charge.

Brick masonry work in cement mortar in foundation complete excluding pointing and plastering as per drawing and technical specifications Clauses 600, 1202 & 1203(Brick Masonry in 1:4 cement Mortar )

Providing and laying Pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical specifications

Geotextile Filter (Laying of a geotextile filter between pitching and embankment slopes on which pitching is laid to prevent escape of the embankment material through the voids of the stone pitching/cement concrete blocks as well as to allow free movement of water without

Providing and Laying of Mechanically Woven Double Twisted Hexagonal shaped Gabions of galvanized steel, of size 3mX1mX1m with two diaphragms at 1m interval, having mesh opening 100mmx120 mm, mesh wire diameter 3 mm for gabions, edge/selvedge wire diameter 3.9 mm and lacing wire diameter 2.2 mm. (The work includes filling boulders in the gabions).

Providing lowering into trenches with true to aligment laying and joining of full lenghts of HDPE pipes of specified grade as per IS :4984- 1995 and specification with testing of pipe line including supply of joining materials PE-63 Grade , PN-10(10kg/cm2) dia 355mm

Construction of 250 dia. Friction micropile including drilling in soil, mixed with boluders and in soft rock upto the desried depth(ODEX Drilling using tyre or crawler mounted machine as per site requirment) cement grouting using double packer, redrifilling, perforted MS casing, inculding all cost of material labour, special labour and T&P required to complete the work in all respect in accordance to drwaing, technical specification and as per direction engineer -in-charge However cost of concerte and reinforcment will be paid seperately as per relevent BOQ items

Construction of 300 dia. Friction pile including drilling in soil, mixed with boluders and in soft rock upto the desried depth(ODEX Drilling using tyre or crawler mounted machine as per site requirment) cement grouting using double packer, redrifilling, perforted MS casing, inculding all cost of material labour, special labour and T&P required to complete the work in all respect in accordance to drwaing, technical specification and as per direction engineer -in-charge However cost of concerte and reinforcment will be paid seperately as per relevent BOQ items

Supply and Installation of Self driven rock anchor made of 40CR material with ouler dia of 38 mm and inner dia of 19 mm, Yield Load Carrying Capacity of Minimum 400 KN in soil / overburden Frock suitable for drilling placing and cement grouting. Installation with all accessories such as 76 mm dia drill bilt, couplers, 10mm thick base plate and nut and bolt complete in all respect but excluding the cost of cement grouting which will be paid extra as per relevant BOQ item.

Cement Pressure Grouting through Hollow Soil/Soild Rock Anchor of Outer Dia 75/51/38/32/25 in Rock/ overburden including all cost of material and equipment/ Packer required to complete the grouting work at desired pressure.

Providing and installing subsurface drainages pipes-perforated PVC pipe (lined with non wovan geotaxtile) of 75 mm internal diameter as per the drawings etc. complete including the cost of drilling and as directed by Engineer in charge

Supply and installation of non woven geotextile having mass/unit- 250gsm over the slope to be treated including all cost of labour, material and T&P required for proper completion of work

Please Enable Macros to View BoQ information