Construction of RCC Bridge No. 1/1 at Gurihati Rakhkhala at Dewaguri village road over Gurihati Dimila Nadi under Infrastructure Development Fund (IBA) in Udalguri District for the year 2025-26. (TN_112_1)

3.4 Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting pig to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per Technical Specification clause 301.5 (i) Privete land.

3.14 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 with lead upto 1000 m as per Technical Specification Clause 303.1 (i) Private Land.

4.1 Construction of granular sub-base by providing well graded material, spreading in uniform layers with with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC, and compacting with smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. (A) By Mix in Place Method (ii) For Grading II Materia

10.2 Traffic Sign (A) Retro-reflectorised Traffic Signs (1) Providing and fixing of retro-reflectorised cautionary, mandatory and informatory sign as per IRC:67 made of encapsulated lens type reflective sheeting vide Clause 1701.2.3 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 450 mm x 450 mm x 600 mm, 600 mm below ground level as per drawings and Technical Specification Clause 801. (ii) 600mm equilateral triangle.

(iii) 600mm circular

14.2 Providing and laying of boulder apron laid in wire creates with 4mm dle GI wire conforming to IS:280 and IS:4826in 100mm x 100mm mesh (Woven diagonally) including 10 percent textra for laps and joints laid with stone boulder weighing not less than 25 kg each as per drawing and teachnical specification Clause 1301.

14.5 Providing and lyaing pitching on slopes laid over prepared filter media as per drawing and technical specification Clause 1302.

BRIDGE PROPER FOUNDATION 17.4 Excavation for Structures (Earth 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 and backfilling with... 1) In ordinary soil. (B) Mechanical Means (II) Without dewatering (i) Upto 3 m depth

17.27 Bored cast-in-situ M 35 grade RCC pile excluding reinforcement complete as per drawing and technical specifications and removal of excavated earth with all lead and lift up to 1000m as per MORTH Section No. 1100, 1600 & 1700 Pile diameter = 1000 mm

17.37 Pile load test on single vertical pile in accordance with I.S. 2911 (Part IV) as per technical specifications of MORTH section No. 1100. a) Initial load test & Routine load test.

17.38 Cement concrete for reinforcement concrete in pile cap complete as per drawing and technical specifications of MORTH section no 1100,1500 & 1700. B. RCC grade M-25 Case I: Using concrete mixer.

17.40 Levelling course for Pile cap as per drawing and technical specifications of MORTH section 1100 &1700.

17.41 Reinforcement in Foundation: Supplying, fitting and placing TMT IS:1786 Fe500 D bar reinforcement in foundation complete as per drawing and technical specifications. b) TMT-IS 1786 (Fe-500 D) Secondary Producer (ISI approved).

SUB-STRUCTURE 17.46 Plain/Reinforced cement concrete, in sub structure complete as per drawing and technical specification and steel shuttering formwork Technical Specificationas clause 1500, 1700 and 2200. F) RCC Grade M 25 b) Height 5m to 10m Case 1 Using concrete Mixer.

17.47 Supplying, fitting and placing TMT IS:1786 (Fe 500) bar reinforcement in sub-structure complete as per drawing and technical specifications a) TMT-IS 1786 (Fe-500 D) Primary Producer (TATA/SAIL/Esser Steel/Jindal panther steel/Shyam steel or equivalent)

17.55 Supplying, fitting and fixing in position true to line and level elastomeric bearing conforming to IRC: 83 (Part-II) section IX and clause 2005 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications.

17.50 Back filling behind abutment, wing wall and return wall complete as per drawing and Technical specification. B) Sandy material.

17.58 Furnishing and Placing Reinforced/Prestressed cement concretein super-structure as per drawing and Technical Specification including steel shuttering formwork. (N) Without Plasticizer, B. RCC grade M-25, Case 1: Using concrete mixer. 2) Height 5.0m to 10.0m

17.59 Reinforcement in Super Structure: Supplying, fitting and placing TMT conforming to IS:1786 Fe 500 D reinforcement in super-structure including splicing complete as per drawing and technical specificationsa) a) TMT-15 1786 (Fe-500 D) Primary Producer (TATA/SAIL/ Esser Steel/Jindal panther steel/Shyam steel or equivalent)

17.61 Providing and laying Cement concrete wearing coat M-30 grade including reinforcement complete as per drawing and Technical Specifications.

17.64 Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

17.67 Drainage Spouts complete as per drawing and Technical specification.

17.77 Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer's instruction for installation).

Carrying out Sub Soil Investigation (SSI) for all type of soil (except boring in rock) up to a depth of 30.m or refusal (N=100) for each foundation location as per IRC:78-2000 and submission of the SSI report to the engineer Incharge for approval. Preparation & submission of design calculation & drawing of foundation, sub-structures, super-structures as per relevant IRC codes and SSI report 2 (two) copies each of design & drawing of each bridge to be submitted for approval and 8 (eight) copies after approval of competent authority.

Making 120 mm wide bamboo foot bridge with 100 mm Bholuka or Barua bamboo posts driven 120 cm to 180 cm underground 3Nos. in each row and rows being 3 m apart bholuka or Barua bamboo dham placed over the post sand tied with cane or wire, Bholuka or barua bamboo struts in each row both up and downstream, jati bamboo longgorhs closely packed and tied with dham. Single layer of mat placedover 75mm thick brus hwood and tied with bholuka or Barua bamboo rail stand fixed in one side of the bridge etc. complete

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