Road works Quality control checklist

SR. NO	ACTIVITY AND OPERATION	CHARACTERISTICS AND INSTRUMENTS	TYPE OF CHECK	Quantum OF CHECK	REFERENCE DOCUMENTS AND ACCEPTED NORMS	REMARKS
1	2	3	5	6	7	9
1	GENERAL
1.1	Site preparation	Layout / Alignment: - Centre line	Measurement	1	Drg./ Specification	The measurement shall be “Total Station”, Auto level
2	EARTH WORK
2.1	Compaction control
		Moisture content before compaction	Field Test	2 Test per 250 Cum of soil	IS: 2720 – Part VII
		Dry density of compacted layer	Field Test	1 Test per 1000 Sqm of compacted area / per layer	IS: 2720 – Part VII	1 test consists of 12 nos of test
2.2	CBR (California Bearing Ratio)	Penetration resistance of sub – soil	Field Test		Specification
3	COARSE AGGREGATE FOR WBM
		Abrasion value / aggregate impact value	Lab Test	One test per source	IS: 2386 (Part – IV)
		Grading of Aggregate / screening	Field Lab Test	One test per 500 Cum	Specification
		Flakiness index for aggregate of top layer	Field Lab Test	One test per 500 Cum	IS: 2386 Part – 1
		Plasticity Index of Binding Material	Field Lab Test	One test per 500 Cum	IS: 2720 Part – V
4	ASHPHALT CONCRETE
		Binder content	Test	One per lot	IS: 73 / 2171/ 454
		Coarse Aggregates	Test	One per lot	IS: 383
		Fine Aggregate	Test	One per lot	IS: 383
		Mix Design	Lab Test	Once	Specification
5	PREMIX
		Temperature Control	Field Test	Once per truck	Specification
		Mix proportion Test	Premix Plant	Once per Source	Specification
6	WORKMANSHIP	Control of Grade, Camber, Thickness & Surface, alignment of Brick edging & Formation width.	Visual / Measurement	1	Drg. / Specification	The measurement shall be done with Auto level, straight edge & camber boards

60 & 40mm Oversize Hand Broken metal (For WBM)

Item	Tests to be Performed	Method of Test	Reference Document	Permissible Limit	Frequency	Remarks
60 & 40mm Oversize Hand Broken metal (For WBM)	a) Quality	Field		As per remark	Random	Metal should be cubical, have sharp edges, hard,  tough, sound, durable, clean, dense, close grained & free from soft,decayed & weathered portions.
	b) Abrasion value*	Lab	IS 6579 - 1981	Not more than 50%	1 test /200 m3 or part thereof	* Either Abrasion or Impact Test should be conducted.
	c) Impact value*	Lab	IS 6579 - 1981	Not more than 40%
	d) Water absorption	Lab	IS 6579 - 1981	Not more than 1.5%
	e) Soundness -				1 test / Source
	Na2SO4	Lab	IS 6579 - 1981	Max. 20%
	MgSO4			Max. 30%
	f) Flakiness **	Lab	IS 6579 - 1981	Max. 15%	1 test /200 m3 or part thereof	** For 40mm H/B metal only.
	g) Grading				1 test /100 m3 or part thereof
	60mm metal	Lab		AS per Table and tolerances mentioned in specifications
	40mm metal	Lab

 

Table for 60mm Hand Broken Metal

<

Sieve Size	% Passing
80mm	100
50mm	0

 

Table for 40mm Hand Broken Metal

Sieve Size	% Passing
63 mm	100
60mm	35 - 70
12mm	0 - 5

 

60 mm H/B metal : Not more than 20% of any sample shall exceed 90mm (about 3/12") in its greatest dimension for WBM.

Chura and dust may be allowed up to 15% of the volume of the stack.

40 mm H/B metal : Not more than 20% of any sample shall exceed 65mm (about 2/12") in its greatest dimension for WBM.

                                    Chura and dust may be allowed up to 15% of the volume of the stack. 

 

Hard Murum for WBM

Hard Murum for WBM	a) Quality	Field		As per remark	Random	Should be hard & free from soft murum,earth,organic matter & other deleterious or soft material
	b) Gradation	Lab	Circular of PWD Standard specification	Size         passing	1test per source
				80mm       95%
				25mm       2% max.
	c) Atterberg limit	Field/ Lab	PWD Standard Specification & MORTH 404.2.6	Liquid Limit =	1 test per 25m3 of binding material
				Max. 20
				Plasticity Index = Max.6

 

Soft Murum for WBM

Soft Murum for WBM	a) Quality	Field	MORTH 404.2.6	As per remark	Random	Should be of granular type,free from earth,organic matter,black cotton soil & any other deletetious material
	b) Atterberg limit	Field/ Lab		Liquid Limit =	1 test per 25m3 of binding material
				Max. 20
				Plasticity Index= Max.6

 Stone Screening

Stone Screening

a) Quality / Grading

Field/ Lab

MORTH 404.2.6 Table No. 400-8

As remarks and below Table .

1 test per 25m3 of screening material.

Quality: Should be free from organic deleterious matter. Should be tough & dense.

Grading ClassificationSize of screeningIS Sieve designation % by wt. passing the IS Sieve. B11.2 mm11.2 mm100 5.6 mm 90 - 100 180 micron 15 - 35

 

 

Laying & Compaction

Moisture Content while compaction

Field

MORTH Clause No.305.3.5.2

Should not be more than OMC by + 1%  or -2%

While conducting FDD check for every layer.

 

##  Breaking of earth clods & embankment material shall be placed in successive horizontal layers of 20cm. to 30cm.depth, extending to the full width of the embankment including the slopes at the level of the particular layer & 30 cm. more on both sides to allow compaction of the full specified section. The extra loose stuff at the edges shall be trimmed later after completion of bank work without cost leaving the correct section fully compacted.

Each layer of embakement shall be watered, levelled & compacted to the densities specified in Morth Table 300-2 hereinafter, before the succeeding layer is placed.

Final Surface

Camber

Field

-

2.5%  to 5%

At every 30mtr. interval

Remarks