Military Engineer Services Tender

Ultrasonic Pulse Velocity :- Test for ascertaining the quality of concrete, uniformity of concrete in terms of soundness and density of concrete as per IS 13311 (Part-1) -1992, ASTM C597-83, BS 6098 :1981 and BS 1881 Part 203 and BS EN 13791; also establishing correlation chart between ultrasonic pulse velocity and other confirmatory test having estimated insitu strength of concrete if required. To determine & identify internal cracks & condition at raft bars. The approx Qty in secondary wing is 400 and primary wing is 200.

Core test :- Core cutting and compression test for RCC structure in accordance with IS:516 on RCC members 70mm core cutting in reinforcement concrete, core filling by speialised epoxy material/micro concrete with bond coat at strategic locations. The approx qty in secondary wing is 100 and primary wing is 50.

Half cell potential test :- Measuring the half-cell/ surface potential at selected locations on RCC members of the structure covered under the study to understand the extent of reinforcement corrosion in terms of probable risk of corrosion of steel bar as per ASTM C875. The rate shall include surface preparation, moistening concrete surface. The approx qty in secondary wing is 50 and primary wing is 30.

Carbonation test:- Measurement of carbonation depth by phenolphthalein spary test at selected location (drilled powder sample or concrete core sample as per site condition) on RCC members of the structures covered under the study to see the depth of carbonation as per BS EN 14630:2006, BS EN 13295:2004, Cover depth is also measured at the same location to know the ration of Carbonation depth The approx qty in secondary wind is 50 and primary wind is 30.

Chemical Test for RCC structure in accordance with IS 456 2000 using ready made kits and reagents. Sample collected will be from half cell/carbonation powder. (i) Determination of pH value. (ii) Determination of water soluble sulphates. (iii) Determination of water soluble chlorides contents at strategic locations and various structural deformities including reasons for settlement as directed by Engineer-in-Charge.

Reinforcement Cover Test : Reinforcement cover test on RCC members to assess covers spacing of bars at strategic locations.

To check & confirm present status of strucutre on basis of NDT results & visual inspection & preparation report with likely causes.

Suggestion for remedial measures to repair cracks etc including preparation and submission of appropriate repairs method and strengtening scheme along with BOQ.

Vetting of report from Structural Engineer Department of IIT (Bombay, Chennai, Kharagpur, Kanpur, Delhi, Roorkee) and also to be approved by E2 Design of HQ CE (A&N) Zone.

M&L for Carrying out the soil investigation in respect to cover field work and laboratory studies includes:- (a) Mobilization of plats and equipments including men and materials required at site of soil investigation, setting of boring/drilling as required and demobilization of plants and equipment on completion of work etc complete (Which includes conveyance of sample collected to testing laboratory as required for the purpose of testing). (b) Boring 150mm dia boreholes from GL upto 10m depth or refusal of strata where N value is obtained more than 50/100 whichever is earlier, to take samples and carryout necessary tests as mentioned below. (c) Carrying out standard Penetration test (SPT) as per IS:2131 including collection of disturbed soil samples in boreholes of every one metre depth or any change or strata and submit the report with all requisite date. (Item 12.00 Contd.../-)

(d) Collection of undisturbed soil sample at every 3m intervals or at any change of strata in 100mm bore thin walled tube samples including waxing sealing packing, transporting to the Lab. (e) Conducting necessary test on all collected samples which includes the determination of :- (i) Shrinkage limit (ii) Atterberg Limits (iii) Natural moisture contant (iv) Wet and dry density (v) Particle size (Soil grain size/ hydrometer analysis) (vi) Consolidation test (vii) Tri-axial shear test (viii) Specific gravity test (ix) Direct Shear Test (x) Free swell index (xi) Crushing strength of rock samples (xii) Testing of ground water sample for sulphates and chlorides and pH. (f) Compilation of data and preparation and submission of report in 04 copies containing NSBCV, SBC, settement test result, graphs, charts, calculation etc and recommendation for foundation.

Structural review of staad file of both primary and Secondary Wing and checking for conformance to seismic Zone-V including checking all lintels and recording development lengths in Secondary Wing in presence of rep of Accepting Officer and checking all columns and beams for plumb and warping and recording the oberavations/ deviations in presence of Accepting Officer.

Checking and testing of sub-structure (normal foundaion) for defects of both Primary and Secondary Wing and checking sample of piles for depth and load condition.

Checking the roof truss and gusset/ insert plates in both Primary and Secondary Wing conformance to design/Structural drawings and degree of corrossion.

Chemical analysis of PCC solid blocks and plaster at various locations and bonding.

Rebar mapping of RCC members for ascertaining the execution of reinforcement as per structural drawing

Ascertaining the reasons for severe leakages and seepage in toilet blocks and suggesting remedial measures of both primary and secondary wing.