C O Storm water drainage system for Una Town in Distt. Una HP SH Conducting hydrology Study and compilation of hydrological data comprehensive re survey with drone for preparing of working Estimate DNITs etc complete in all respect

Amount

DRONE SURVEY

i) Mobilisation & Demobilisation of Survey team and equipment to and from site. ii) Marking of TBMs/GCPs with DGPS (reference bench mark approved by the engineer-in-charge) at site/sites under survey by parallel leveling, establishing and constructing bench mark, grid and reference pillars in the field, and determining the co-ordinates of all the boundary corner stones. iii) To conduct aerial surveys using drone visual camera & software analytics and prepare high definition video reports and 2D/3D maps. Prepare Ortho mosaic map in jpeg format (resolution upto 5 cm), Digital Terrain Model (DTM) and Digital surface model (DSM)in GeoTIFF or ESRI ASCII.

DPR & working Estimate

i) Collection of relevant information for the subject property and surrounding area. This includes site area maps and identification of land-use. ii) Analysis of rainfall data gathered from nearby gauge station or satellite based TRMM data to ascertain flood conditions at site and nearby area (flow rate, frequency, duration). The intensity, frequency and duration of the extreme rainfall shall be defined in accordance with the applicable standard. If not specified in the applicable standard, a minimum return period of 100 years shall be applied, which could be reduced under justification. iii) Visual survey of the entire drainage area as identified from the maps and data collected. iv) A review of readily available records and documents on hydrology of the area, to assist in determining surface water drainage patterns for the subject property and adjacent areas. v) To establish catchment characteristics such as run-off and natural stream network as established using leading software such as QGIS, HEC RAS, HEC-HMS and Civil 3D. These characteristics shall be further scrutinised for flood analysis and suitable drainage design. vi) The hydrology analysis to derive flood peak hydrographs and frequency analysis to identify the magnitude of extreme storm events for the return periods specified. vii) Based on the parameters such as rainfall intensity, run-off, catchment area, run-off coefficient, existing soil condition, drain out fall location etc. derived from hydrology study, to suggest the plant layout and designs for storm water drains and culverts. viii) Analyzing the data and submitting an engineering report, furnishing recommen-dations for the design and construction of internal drainage structures or other preventive measures at the site; calculation notes of the drainage system (flow rates, storage volumes, and dimensions) and Erosion protection measures. All details shall be provided to the client with studies of the areas mentioned in the present document and shown on the KMZ file of the site. ix) Preperation of working estimate from above data and design including proposed strom water drain network with detailed calculations, design, and working estimates.

* TERMS AND CONDITIONS*

The work shall be executed as per JSV/HP PWD specification and as per direction and satisfaction of the Engineer-in-Charge.

Taxes, labour cess, and security as applicable will be deducted from the each bill of the contractor.

Nothing extra shall be paid on account of field visits, campus. Experts visit any other type of Investigations. Machinery or equipments used/hired.

Working estimate shall be prepared strictly in accordance to the latest guidelines

The rates to be adopted in the working estimate and DNIT shall be based on the HPSR/analyzed rates on market prices. The labour and material rates approved from the department before framing the working estimate

Survey of complete catchment area with the help of total station, contouring of complete catchment area, marking of proposals preparation of L-section and X-section of Drains etc.

All drawings should be prepared on modern soft ware such as CAD etc. with GIS interface. The software along with soft copy and hard copy is to be provided to the department.

The consultant shall submit five(05) copies for working estimate and DNIT each.

Field data collection:- Preparation of Shajra maps and collection of detailed revenue record from Revenue Department is to be obtained by the contractor.

Preparation of working estimate and approval there of from the competent authority

In the event the survey being incorrect at any stage, consultant shall prepare the revised working estimate at his own cost after conducting the fresh survey.

The firm should be held responsible for its submission and approval from competent authority within stpulated period

The payment condition /schedule as under :-

i) On submission of working estimate 30% of Awarded amount

ii) On approval of working estimate/ Technical sanction 30% of Awarded amount

iii) On submission of DNIT 20% of Awarded amount

iv ) On approval of DNIT from 20% of awarded amount competent authority.

The time period allowed for completion of whole job shall be 30 days . The working estimate shall be prepared in detailed.

SUBHASH ANITA and ASSOCIATES

Atcon Engineers