PROVN OF CONSULTANCY SERVICES FOR DRAINAGE ALONGWITH TOPOGRAPHICAL PROFILE AT AF STN SRINAGAR

Amount

(a) Carrying out Topographic Survey by Mobile LiDAR technology using Survey grade mobile LiDAR, Leica-Pegasus system with Z+F 9012 laser profiler, for about 25 KM of Runway, PTT & Taxi Tracks and AF stn at Srinagar, J & K, LiDAR data covearge upto 50 m on either side of runway/road centre line or upto the visual restriction, whichever lesser as per actual site conditions for single pass of instrument. (b) Carrying out standard pre-processing work using 'Leica Auto P' software . Preparing registered 3D point cloud data in *.hpc or LAS format and 360 degrees camera views for the captured data. (c) Carrying out standard feature extraction work using Leica Map Factory -Arc GIS software for preparing 3D plan in Autocad *.dwg / *.shp format. (d) Preparing TIN surface from the captured LiDAR survey data, generating minor contours at 0.50m interval, major contours at 2.5m interval and spot levels at intervals of 10m grid. (e) Preparing Runway drain profile and layout with cross section and submitting the drawings in soft and hardcopy. (f) Preparing Cross Section of Runway, PTT and Taxi tracks as per existing layer and submitting the drawings in soft and hardcopy. Note : (i) All report/Survey data to be submitted in hard copy -05 Nos and soft copy in CD. (ii) The accuracy level will be as per the data sheet of the Leica Pegasus Two mobile mapping system alongwith the scanner Z+F profiler 9012 having data acquisition rate up to 1 million pixel / second and as per actual site conditions & satellites available for DGPS. The relative accuracy of the data should be about +/- 5 mm, whereas the absolute accuracy will be +/-2 cm for areas with good GPS signals, Generally, we have achieved the accuracy of point cloud as <5 cm in X, Y, Z; for previous similar road survey works with good exposure to the GPS satellites.

Demolition of Concrete /Bituminous concrete at edge of Runway, PTT , Taxi tracks of any description of approx size 1.0 m x 1.0 m x 1.50m, 06 No pit for preparing Cross Section of Runway, PTT and Taxi tracks as per existing layer and submitting the drawings in soft and hardcopy and filling the excavated pit as given below : (i) Hardcore of guage exc 63mm but n exc. 100 mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rolled/rammed to a true surface using broken stone or boulders 0.15 m depth (ii) Cement concrete Type B2 1:2:4 ( 40 mm graded aggregate) in foundations, filling and mass concrete (iii) Finishing top surface with 100 mm thick Cement concrete type B-1, 1:2:4 (20mm graded aggregate)

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft/loose Soil of approx size 1.0 m x 1.0 m x 1.50m, 14 No pit, for preparing Cross Section of foundation near BPs as per existing layer and submitting the drawings in soft and hardcopy and Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft /loose soil: