RITES Limited Tender

Conducting control Points survey using DGPS/Total Station and Auto level for the complete alignment by marking it on the permanent structures or any temporary location depending upon the site condition. Primary control Points to be marked at every 2 Km and Secondary control points at every 500m . Transferring of elevation using Auto level. GCP at every 2 KM

Conducting control Points survey using DGPS/Total Station and Auto level for the complete alignment by marking it on the permanent structures or any temporary location depending upon the site condition. Primary control Points to be marked at every 2 Km and Secondary control points at every 500m . Transferring of elevation using Auto level. TBM at every 0.5 KM

Providing and fixing cast-in-situ or precast M-20 RCC concrete pillars pillars of size 15cm x 15cm x 90cm in 1:2:4 cement concrete proportion at every 100m interval as per Para 427E at any location as directed by Engineer - in-charge of the work with contractor's materials, labour, tools and plants including taxes and royalities. and Planting of concrete pillars of size 30cm x 30cm x 90 cm in 1:2:4 cement concrete proportion at every 500m interval and at the tangent point of curves as per para 428E and as per Scope of Work & Technical Specifications with Contractors' own materials, tools and plants; including all leads and lifts and crossing of track etc.; including all taxes and royalties complete; including painting, marking the pillars at site; including setting out of curves at site indicating transition portion, apex point and crown of curve, beginning and end. RCC Pillar size 150 x 150 x 900 mm

Providing and fixing cast-in-situ or precast M-20 RCC concrete pillars pillars of size 15cm x 15cm x 90cm in 1:2:4 cement concrete proportion at every 100m interval as per Para 427E at any location as directed by Engineer - in-charge of the work with contractor's materials, labour, tools and plants including taxes and royalities. and Planting of concrete pillars of size 30cm x 30cm x 90 cm in 1:2:4 cement concrete proportion at every 500m interval and at the tangent point of curves as per para 428E and as per Scope of Work & Technical Specifications with Contractors' own materials, tools and plants; including all leads and lifts and crossing of track etc.; including all taxes and royalties complete; including painting, marking the pillars at site; including setting out of curves at site indicating transition portion, apex point and crown of curve, beginning and end. RCC Pillar size 300 x 300 x 900 mm

Carrying out Hydrographic survey for a stretch of 5 km. i.e. 3 km upstream and 2 km downstream of the proposed major bridge location by observing river cross-sections at an interval of every 500m along with three additional cross sections at the proposed bridge centre line and the other two at 50m intervals with all spill channels upstream being shown on the plan. These distances of 3km and 2km are to be taken as measured at right angles to the centre line of the Railway and not along the course of the river. The position of cross section of the riverbed should be marked on the survey plan. The level of the highest known flood and ordinary low water should be noted on each cross section. (ii) Investigation and collection of the following data (for major bridges): (a) Topographical details, catchment area with its shape (Oblong, fan etc.) and characteristics from the Survey of India maps. (b) Details of the course of the main stream and its tributaries. (c) Longitudinal slope of the main stream and average land slope of the catchment from the contours (d) Nature of soil in the catchment (rocky, sandy, loamy or clay etc.) (e) Extent of vegetation (forest, pasture, cultivated, barren etc.) (f) Probable changes that may occur in the catchment characteristics assessed by enquiries from the right sources. (g) Changes in the course of the channel. (h) The nature of the material through which the channel flows. (Whether it consists of boulder, gravel, sand, clay or alluvium.) The description should be based also on actual borehole particulars. (i) Bank erosion and bed scour observed at the bridge site in the case of alluvial rivers and the nature of material transported. (j) The maximum observed scour depth in the vicinity of the proposed bridge crossing. (k) Full description of bridges (as given below) existing both upstream and down stream from proposed crossing including relief and overflow structures: (i) Type of bridge including span lengths and pier orientation. (ii) Cross section near the structure, including the vertical clearance from water level to soffit of superstructures and direction of the current during floods. (iii) All available flood history-high water marks with dates of occurrence, afflux observed, damages caused with sources of information.(iv) Photographs of existing bridges, past floods, main channels and flood plains and information as to nature of drift, stream bed and stability of banks. (l) Factors affecting water stage at the proposed bridge site such as: (i) High flood levels of stream joining, (ii) Particulars of reservoirs and tanks existing or proposed to be constructed and approximate date of construction. (iii) Flood control projects on the stream or other structures which affect the flow in the stream. (iv) Character of floods-Whether steady, flashy or eddy forming etc. (m) Hydrological particulars & data such as low water level, high flood level, discharge data, flood velocity, rainfall records from local or nearby gauging stations of irrigation and flood control departments and local enquiries.