STANDARD INSPECTION & TEST PLAN (ITP) FOR CIVIL WORKS :

Transcription

1 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD (ITP) F CIVIL KS : 1.0 GENERAL NOTES: Inspection & Test Plan (ITP) given herein is indicative only. Contractor shall prepare and submit ITP for all activities. The provisions indicated herein for stage wise inspection are minimum and the Engineer-in-charge may decide to increase the Hold Point/itness Point basis the work being carried out at site. Contractor has to prepare ITPs for any of the activities not covered herein, submit the same to CL and obtain their approval. Contractor to prepare required reporting formats and job procedure for each activity i.e. Setting out of work, levels at 5 m grid, prior to excavation, submission of murrum samples meeting tender specifications along with soil lab test report, concreting, etc., to CL for approval well in advance prior to commencement of activity. Any deviation to ITP shall be subjected to CL's written approval. Contractor to carry out 100% examination; satisfy that the specifications as per PO are complied & thereafter submit to CL for witness/review as applicable. 2.0 LEGEND: 2.1 : HOLD POINT A point which requires inspection/verification and acceptance by CL before any further processing is permitted. PAGE 1 OF 10

2 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD The Contractor shall not process the activity/item beyond the Hold Point without written approval from Engineer-in-charge. 2.2 : itness Point Any point which requires witness by CL when activity is performed. 2.3 R: review of contractors documentation Contractor s documentation to be reviewed by CL. 2.4 S: Surveillance inspection by CL Monitoring of observations to verify whether or not materials/items/services confirms to specified requirement. Surveillance activities may include audit, inspection, witness of testing, review of quality documentations and records, personnel qualifications etc. 2.5 : 100% examination by contractor. 3.0 THE INDICATIVE INSPECTION AND TEST PLAN IS AS BELO, PAGE 2 OF 10

3 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 1 LEAD LINE, R&D YARD AND UNLOADING SIDING 1.1 Fixing of Centre line & levels with respect to CL coordinates & Bench Marks with Total Station. Setting out of various control points & alignment, grid levels at every 3m c/c bothways before filling. 1.2 The readings will be taken after filling each layer 1.3 Submission of soil test reports confirming to PO Specifications to CL for approval with all requisite details like grain size analysis, atterberg limits, modified proctor dry density with graph. 1.4 Submission of following documents to CL pertaining to soil being brought for filling purposes. a) Contractor to submit activities to be carried out under this item for CL s review. b) NOC from land owner or owner of borrow pit c) 7/12 extract and village map indicating the location of the plot/quarry. d) Royalty payment slips 1.5 A) Rolling of each layer after filling & testing for specified lab dry density achieved in case of soil only. B) Each layer shall not exceed specified loose thickness PAGE 3 OF 10

4 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 1.6 A) Embankment formation : Specified layer checking with templates/tools at various coordinates & recording. atering the layer, checking the OMC through Moisture tester & recording co-ordinate wise. B) Compaction : Rolling the OMC watered layer immediately till specified Modified Proctor lab dry density is achieved. Testing for compaction to confirm its specified Modified Proctor dry density achieved coordinate wise, recording the levels co-ordinate wise. (Min. test as specified per layer) Offering tested layer to CL to inspect & witness to give clearance for next layer. 1.7 Obtaining NOC from District Mining Officer/relevant statutory authority as regard to royalty payment for executed quantity basis CL letter before final bill. PAGE 4 OF 10

5 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 1.8 Construction of side shoulders, watering and compaction up to a thickness of compacted thickness and trimming of inside edge to vertical. Laying of courses and rolling with Vibromax/10T roller to specified thickness and checking with templates/ tools at various coordinates and recording layer wise. Offering to CL layer wise to inspect & witness and to give clearance for next layer. PAGE 5 OF 10

6 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 2 RCC,PCC & assoc. works 2.1 Laying of PCC beneath foundations Checking of layout and materials, compaction of sub grade Visual inspection, sieve analysis and carrying out all the field tests of the sand and coarse aggregates as per attached specifications. Verification of the test reports of all the tests of cement, sand, water and coarse aggregates specified in tender documents from govt. approved laboratory supplied by the contractor with respect to the specifications Mix proportion Check for shuttering, dewatering if any Concreting with proper compaction with plate vibrators Checking of top level of PCC Curing PAGE 6 OF 10

7 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 2.2 Bottom Raft, side walls & wingwalls: Carrying out PCC as per drawings and specifications. hold point clearance for center points for side walls and Rafts and center lines for haunch Submission of design calculations for formwork including shuttering and props. Approved quality shuttering to be provided. Inside dimensions to be marked. Reinforcement steel to be placed as per CL approved bar bending schedule/drawings with cover blocks/spacers. Contractor will provide the gauge/template for measuring the diameter of reinforcement bars. The sample piece will be taken out from above supplied steel; the same will be tested at designated laboratories as given in attached specifications. Placement of concrete will be started only after the receipt of test report of the steel testing. Counting authorized laps and chairs. Visual inspection, sieve analysis and carrying out of all the field test of the sand and coarse aggregates as per attached specifications. PAGE 7 OF 10

8 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 2.2 Verification of the test reports of all the tests of cement, water, sand and coarse aggregates specified in tender documents from approved laboratory Mass batching of aggregates, sand and cement as per mix designed & placing of concrete. Vibrating, tamping and finishing smooth. Measurement of finished dimensions. It shall be the sole responsibility of the contractor to ensure the members are in a proper grade & levels as per the approved drawing. Curing of the cast concrete. Slump cone test. 2.3 Cube test sample collection from the mix, curing and its testing as per IS: 456, submission of following laboratory reports, a) slump test - field b) cube strength - lab/field PAGE 8 OF 10

9 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 3.1 Plastering : Visual inspection, sieve analysis and carrying out of all field tests of sand as per attached specifications Verification of the test reports of all the tests of cement and sand specified in tender documents from approved laboratory supplied by the contractor with respect to the specifications Carrying out plastering of specified thickness with CM as per specification. Final acceptance after checking thickness of plaster with thickness gauge to be provided by the contractor at some random places as decided by CL. PAGE 9 OF 10

10 CONSTRUCTION OF BG RAILAY SIDING AT KADAPA IRD CL 4.0 BACK FILLING: Back filling in foundation trenches after construction of foundation or wherever required as per the directions of CL engineer in charge, using the serviceable earth Offering the selected material from excavated earth for backfilling to CL to inspect and witness. Filling the material in layers of specified thicknesses atering the layer and compaction using plate vibrator Offering tested layer to CL to inspect & witness to give clearance for next layer. PAGE 10 OF 10