49 DOCUMENTATION:

If so ordered the Engineer in charge the contractor will prepare drawings of the work as constructed and will supply original and three copies to the Engineer who will verify and certify these drawings. Final as constructed drawings shall then be prepared by the contractor and supplied in triplicate to the Engineer for record and reference purposes at the contractor’s cost.

50 If the potable water is not available in the river bed the contractor has

to make his arrangement for potable water required for concrete mixing its curing and other parts of the construction for which no extra claim will be paid by the Department.

51 DAY TO DAY QUALITY CONTROL OPERATIONS:

The day to day controls to be exercised by the contractor and the Engineer enumerated in the below paragraphs.

51.1 ALIGNMENT & LEVEL CONTROL:

a. The contractor should locate the center line of the building from

the pegs, pillars or reference points fixed during the location survey and from the information furnished in the contract drawings. Any discrepancy between the reference points on the ground and those on the drawings should immediately be brought to the notice of the Engineer for reconciliation.

b. Based on the approved center line, the contractor should set up

batter pegs (to delineate limits of cleaning and grubbing) and have these got checked and approved by the Engineer.

c. The contractor should check the reduced level of benchmarks set

up along the alignment. Any discrepancy in the reduced levels of those at site and as indicated in the drawings should immediately be brought to the notice of the Engineer for reconciliation. The contractor should re-establish those benchmarks which are found missing at site, and

should establish additional benchmarks as needed, for ensuring effective level control.

d. The contractor shall be responsible for the true and proper

setting out of the works in relation to original survey points, lines and levels of reference given by the Engineer in writing. If at any time during the progress of the works, any error shall appear or arise in the position levels dimensions or alignment of any part of the work, the contractor on being required to do so by the Engineer, shall at his own cost rectify the error to the satisfaction of the Engineer, unless such error is based on incorrect data supplied in writing by the Engineer.

e. The contractor shall carefully protect and prepare all benchmarks reference, pillars and pegs used in setting out the works till final take over by the Engineer.

51.2 NATURAL GROUND FOR EMBANKMENT CONSTRUCTION / CUT FORMATION AND THEIR COMPACTION

a. Atterberg limits in situ dry density and CBR of the material at ground / or formation level, should be determined and got approved by the Engineer. Any unsuitable material shall be removed and replaced by better materials as ordered by the Engineer.

b. The Engineer’s quality control units shall have independent test checks on the quality and compaction of the natural ground / cut formation.

51.3 EMBANKMENT CONSTRUCTION:

a. All borrow area shall be got approved by the Engineer based on results of tests for atterberg limits, proctor / modified proctor density CBR and soil classification.

b. Layer thickness and in situ density shall be checked and got approved by the Engineer before proceeding to the next layer.

51.4 SUBGRADE:

a. Specific borrow areas having soil satisfying the requirement of specifications and specified strength criteria shall be identified for use in sub grade and got approved by the Engineer.

b. In case of any appreciable variation of inbuilt sub grades characteristics from the designed ones, the pavement design shall be reviewed to match the inbuilt characteristics of the sub grade. c. The soil used in actual construction of sub grade shall be remolded

at density referred in sub-para (d) below at placement moisture content and checked for 4 days soaked and un-soaked CBR A set of 3 specimen shall be collected from each 300 cum. Area of the sub grade. (i.e. top 0.5 m of embankment) for CBR test.

d. In situ density and CBR of the constructed sub grade shall be checked and got approved by the Engineer before proceeding on with the next pavement layer.

51.5 SUB BASE:

a. The source of supply of material shall be inspected tested and got approved by the Engineer before any material is delivered to site of works.

b. Job mix formula falling within the specified limits where applicable shall be got approved by the Engineer based on test results thereof. c. Samples of the material from the laid sub base shall be tested for

gradation pl.

d. Field compaction shall be checked and got approved by the Engineer before proceeding with the work on the next pavement layer.

In case of any appreciable variation of in built sub base characteristics from the designed ones, the pavement design shall be reviewed to match the inbuilt characteristics of the sub base.

51.6 GRANULAR BASE COURSE:

a. For graded type of granular material the job mix formula falling within the specified limits should be got approved by the Engineer. b. Testing of aggregates brought to site of works for gradation and

aggregate impact value should be done.

c. Testing of filler material for WBM for gradation liquid limit and plasticity index shall be done.

d. Field compaction control should be exercised for density and by other sensory checked such as observation of movement of layer under compaction, sinking / crushing of a piece of gayer glut placed a moving roller complete removed of roller marks etc.

51.7 SHOULDERS:

a. Checking for the quality of shoulder material including gradation shall be done.

b. Field compaction shall be checked at site on the compacted layer. c. Checking for the cross fall built shall be done.

51.8 BITUMINOUS CONSTRUCTION GENERAL:

a. Manufacture’s test certificate for quality of bitumen will be acceptable to the Engineer. However, where the quality is in doubt, the Engineer may call for tests to be conducted by contractor for variation.

b. The base on which bituminous courses are to be laid must be dry and free of dust and other deleterious matter.

c. Mineral aggregates to be used should be checked for their specification requirement and got approved by the Engineer.

51.9 BITUMINOUS SPRAYED WORK:

a. Temperature of binder in the boiler and rate of spray at site shall be checked. Spraying shall be uniform and shall be carried out with the help of either self propelled or towed bitumen pressure sprayer with self heating arrangements and spraying nozzles arrangements.

b. Rate of uniformity of spread of chipping should be checked and controlled.

c. Rolling shall ensure adequate embedment of the chippings by rolling.

52 FIELD LABORATORY:

The contractor shall arrange to provide a well furnished and fully equipped field laboratory which shall be manned by adequately

qualified technical staff. The laboratory shall preferably located adjacent to the plant site and shall be provided with amenities like water supply, electric supply, toilet block, etc. The laboratory equipment shall confirm to Clause 121.3 on page No. 26 of MOST specifications of road and bridges. The equipments shall be preferably of AIMIL make. This shall be considered as incidental to work and no separate payment whatsoever will be made for the same. The testing of materials for work should be carried out as per frequency chart given in annexure ‘B’ by at least 30% of the test should be performed in P.W. Laboratory in variably failing to which recovery at prescribed rates of VQCC Laboratory should be effected from contractor’s bill.

53 SUPPLY OF COLOURED RECORD PHOTOGRAPHS AND ALBUMS:

The contractor shall arrange to take dated post card size colored photographs at the rate of 10 photographs at various per kilometers / at various stages / facts of the works including interesting and novel features of the works as desired by P.W. Laboratory the Engineer in charge and supply them in five copies each in separate albums of appropriate size.

He shall also arrange for video filming of important activities of the work during the currency of the contract and edit it to a video film of 60to 180 minutes playing time.

It shall contain narration of the various activities in English / Marathi by a competent narrator. The cassette shall be acceptable quality and the film shall be capable of providing colour pictures. This shall be considered as incidental to the work and no additional payment whatsoever will be made for the same.

54 SUPPLY OF SAFETY JACKETS TO LABOURERS / SUPERVISOR/