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HEARTY

WELCOMEAPUFIDC.

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Quality Control/Quality Assurance InConstruction

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3rd PQA UIDSSMT Agencies

Selected through Tendering Process.

Agencies appointed

M/s NCPE Hyderabad

Aarvee Associates.

M/s DHV Consultants.

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APPROVALS

G.O 487 MA dated23.10.2003 ---CCF

G.O.Rt No.512 dated1.4.08---- UIDSSMT

G.O.Rt. No.639 dated 25.4.09- UIDSSMT.

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Quality Control wings

Departmental QC

one division for two circles.

Conducting the specified tests in

accordance with the sampling criteriaat all stages of process to ensure therequired quality parameters.

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Quality Assurance (QA)

Managerial methods designed to plan,monitor and control to assure the Qualityof all the processes such that the end

product satisfies the desired properties.

carry out random tests duringpreconstruction, construction and postconstruction stages.

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Quality Assurance (QA)

Eliminates poor services and inducesgreater professionalism in the process,instills public confidence and acceptance.

Avoids inefficiency and litigation.

Eliminates the interferiences.

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Quality Managementbenifits

Quality of the design process

Quality of the construction process

Quality of the products

Quality of maintenance.

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Frequency of Reporting

QA Reports to

1.Executive Engineer.

2.Supertending Engineer. 3.SLNA.

At Twice in a month Satisfactory.

Immediate reporting Adverse reports. Action taken reports monitored by SLNA

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Quality Standards -Roads

IRC: 58 Guidelines for the Design of Plain JointedRigid Pavements for Highways

IRC 15:2002 Code of practice for construction ofrigid pavements

IRC SP: 62 Guidelines for the Design andConstruction of CC Pavements for Rural Roads

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Frequency of sampling- Concrete

Test results shall comply with IS: 456-2000

1-5 cum 1 sample 6-15 cum 2 samples 16-30 cum 3 samples 31-50 cum 4 samples 51 and above 4 +1 addl. sample for addl. 50 m3 or part

At least one sample shall be taken from each shift

Core tests to be conducted as per IS: 456 for the purpose of detailedinformation.

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Sampling -continue

SWG..I S 651-2007

PSCI S 784.2001

BWRC I S 15155-2002 PVC.I S 4985-2000

GRP.I S 12709-1994

Di..I S 8329-2000 HDPEI S4984-1995

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Tests-Building Materials

Bricks---- IS 1077-1992.

Cement bricks..IS 2185-1979.

Aggregates---------I S 2386- Part 1to7

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Test Frequency

(i) Aggregate Impact Value 1 test per 250 cum or per day

(ii) Grading of aggregate andscreenings

2 tests per 250 cum or per day

(iii) Flakiness Index 1 test per 250 cum or per day

(iv) Atterberg limits of bindingmaterial, if required

1 test per 50 cum or per day

(v) Water absorption 1 test per source (threerepresentative specimens foreach source)

(vi) Thickness Regularly

Quality Control Tests

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Test Frequency

(i) Quality of Binder 1 test per lot of 10 tonnes

(ii) Aggregate Impact Value (or LosAngeles Abrasion Value)

1 test per 250 cum

(iii) Flakiness and Elongation Index 1 test per 250 cum or per day

(iv) Stripping value 1 test per source (three representativespecimens for each source)

(v) Water absorption 1 test per source (three representativespecimens for each source)

(vi) Grading 1 test per 100 cum or per day

(vii) Soundess (Magnesium and SodiumSulphate)

1 test per source

(viii) Temperature of binder atapplication

Regular close intervals

(ix) Rate of spread of materials (binder

and stone chips)

1 test per 1000 sq m or per day

Quality Control Tests and their frequency

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Test Frequency(i) Quality of Binder 1 test per lot of 10 tonnes

(ii) Aggregate Impact Value (or LosAngeles Abrasion Value)

1 test per 250 cum or per day

(iii) Flakiness and Elongation Index 1 test per 250 cum

(iv) Stripping value 1 test per source (three representativespecimens for each source)

(v) Water absorption 1 test per source (three representativespecimens for each source)

(vi) Grading 1 test per 100 cum or per day

(vii) Soundess (Magnesium and SodiumSulphate)

1 test per source

(viii) Temperature of binder at application Regular close intervals

(ix) Binder content 2 tests per day

(x) Thickness of BM Layer Regularly

(xi) Density of compacted layer 1 test per 1000 sq.m. area or per day

Quality Control Tests and their frequency

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Frequency of visits-concrete

Based on the type and importance of thework.

1 No---materialpre construction

1no- Reinforcement for each component

1no-For concreting of each component.

1no- Columns at each staging. 2nospost construction.

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Frequency of visits-pipelines

Material testing ------Factory

Laying &Joiting.

1no---- 1km upto 200 mm dia 1no----.50Km upto 500 mm dia

1no----.25 Km beyond 500mm dia.

Hydraulic test; 1no on Average 5 kms

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Testing - Cores

In case of doubt regarding thecomp.strength tests on cores

and/or load test shall be carried

out. Core tests: the ave. equivalent cube

strength of the cores is equal to at least

85% of the cube strength of the grade ofconcrete specified for the correspondingage and no individual core has strengthless than 75%

t it i

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cceptance criteria-Roads

The Test results of the sample variation is morethan + 15% of the average,the test results of thesample are invalid.

The mean strength results complies with the

appropriate limits in col.2 of table 11 of IS:456-2000

Any individual test result complies with theappropriate limits in col.3 of Table 11 of IS:456-

2000

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Payment in case of deficiency in

thickness CC roads

Up to 5mm

6-10mm

11-15mm

More than 15mm

100% of rate

87% of rate

81% of rate

Rejection

A days work is considered for

thickness.

If average deficiency is morethan 15mm identified by cores,such slabs shall be Removed bycontractor.

Penalties can belevied as per

agreementconditions fordefective works

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Acceptance/Recovery-CC slab

Mastic pads not used/defective material used- Deductionof twice/equal to cost of mastic pads .

Joint sealing not done.Deduction of twice/equal to cost ofjoint sealant.

Failure of CC cubes- payment based on core tests at thecost of contractor @2 cores/150cum of

Progressive surface damage-Withholding payment untildefects liability period.

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Recovery criteria-CC pavements

Metal exposed- Affected area of CC road tobe rejected

Water stagnation- Payment to be made after

rectification.

Improper curing- deduction of cost of

pavement for the affected area and paymentbased on core tests at the cost of contractor.

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Acceptance criteria-CC (1:4:8)

Deficient thickness up to 10% of ave. -Proportionate recovery of affected area

Deficient thickness above 10%-Proportionate

recovery of twice the cost of affected area

Improper curing- Deduction of twice the curingcharges and payment based on core tests at the

cost of contractor.

Improper compaction-Payment based on cube tests

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Acceptance criteria-CC lean concrete

Oversize metal upto 10%- No recovery

Oversize metal 10% to 20%- recovery at25% of difference in basic rate of metal andnext higher size metal

Oversize above 20%- Rejection

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Acceptance criteria-WBM roads

Verify for over size

Verify density of metal in an area of 0.50 m x0.50 m for each layer

In respect of thickness and less quantity ingravel and WBM layers, a maximum tolerance of20% may be allowed

In respect of recoveries upto 10%, estimate cost

is to be recovered From 11 to 20%, 1 times estimate cost is to

be recovered

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Acceptance criteria-WBM roads-Contd.

Over size metal upto 10% - no reecovery

Over size metal 10%to20% - recovery at 25% ofdifference in basic cost of metal and the next

higher size metal Over size of metal between 30% to 40% - Rate

of next higher size metal shall be allowed

Over size metal above 40% - Rejection of metal

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Acceptance criteria-Bituminous layers

A maximum of 10% variation may be allowed inrespect of less thickness and less quantity

Deficient thickness upto 10%-Estimate cost is to berecovered

Deficient thickness above 10%- Rejection of thelayer

Bitumen content deficient upto 0.30%by weight ofthe total mix- Recovery of cost of bitumen for

reduced quantity Bitumen content deficient by more than 0.30%-

Rejection of the work.

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Thanking YouProject Manager

APUFIDC.