CAPÍTULO 3. MODELO DE SISTEMA
3.3 Especificaciones de Caso de Uso de Sistema
cum cum cum
Rate Rs.
116.04 116.04 58.02
~ WOlks:.s.:Bases and SurliIceCoune (BilumiDous)
Sr. Reference to Description Unit Quantity . Ratf·
No. MoRT&H Specifications Rs.
5.4\ -.
*'
505 Bituminous Penetration Macadam Construction of penetration macadam over prepared base by providing a layer of compacted crushed coarse aggregate using chips spreader with alternate applications of bituminous binder and·key aggregates and rollingwith a smoothwheeled steelroller8-10 tonne capacity to achieve the desireddegree of compaction.
A. 50 mm thick Unit
=
sqmTaking output=4500 sqm (225 cum) a) Labour
Mate day
Mazdoor includingfor brooining of key day aggregates
Mazdoor skUled day
b) Machinery
Hydraulicself propelled chip spreader hour both for aggregates and key aggregates
@ 1500 sqm per hour for 4500 x 2 sqm = 9000 sqm
Bitumenpressure distributorfor hour
@ 1750sqm per hour
TIpper5.5 cum capacity for carriage of hour aggregates from stockpile to chip spreader Vibratory roller 8 tonnes hour Front end loader 1 cum bucket capacity hour c) Material
Bitumen @ 5 kg per sqm tonne
Crushedstone coarse aggregatepassing cum 45 mm and retained on 2.8 mm sieve
@ 0.06 cum per sqm
Key aggregates passing 22.4 mm and cum retained on 2.8 mm [email protected]
persqm
Road Works: S-Bases and Surface Course (Bituminous)
..sr,
Rererence to DesCriptionUnit
Quantity RateNo. MoRT&H ·Rs.
Specifications
d) Overhead charges @ %on (a+b+c) e) Contractor's profit@ % on (a+b+c+d) Cost for 4500 sqm = a+b+c+d+e
Rate per sqm = (a+b+c+d+e)l45!l!l
Note: 2 tipperswill be neededto match the capacity of chip spreader and front.end loader.
B. 75 mm thick Unit=sqm
Taking output = 45011.sqm (337.5 cum compacted)
a) Labour
Mate day - 0.40
Mazdoor includingfor brooming of key day 8.00 aggregates
Mazdoor skilled day 2.00
• •
b) Machinery
Hydraulicself propelledchlp.spread~r hour bolh for aggr'egatesand key aggregates
@ 1500 sqm per hour for 4500 x 2 sqm BitUmenpressure disbibutor for hour
@ 1750 sqm per hour
Tipper 5.5 cum capacity for carriage of hour aggregates from stockpile to chip spreader
Vibratoryroller 8 tonnes hour
Front end loader 1 cum bucket capacity hour
6.00
2.57 10.00
6.00 6.00·
c) Material
Bitumen @ 6.8 kg per sqm tonne Cn,lshedstone coarse aggregate (loose) cum passing 63 mm and retained on 2.8 mm
sieve @ 0.09 cum per sqm
Key aggregates passing 26.5 mm and
retained on 2.8 mm sieve @ 0.018 cum cum persqm
30.60 405.00
81.00
129
'III
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Road Worts: 5-Basesaod Surface Course (Bituminous)
t
Sr. Reference to
41
Description
Unit Quantity Rare
41
No. MoRT&H Specifications Rs.
• •
d) Overhead charges@
%on (a+btc)
•
e) Contractor's Profit @
% on (a+b+c+d)
•
.Cost for4500 sqm
=
a+b+c+d+e• •
Rate per sqm
=
(a+b+c+d+e)/4500•
Note:
2tippers and2rollers Will be needed to match
•
the capacity of chip spreader and front end
•
loader.
•
5.5. 506
Built-up Spray Grout
PrOViding, laying and rolling of bUilt-up spray
•
•
grout layer over prepared base consis6ng of
•
a two layer composite constr~tion of
•
compacted crushed coarse agg!l!gates using
•
motor grader for aggregates. Key stone chips spreader may be used with application of
.:-
•
bituminous binder after each layer, and with
•
key aggregates placed on top of the second layer to serve as a base conforming to the
•
fine, grades and cross-section specified, the
•
compacted layer thickness being 75mm.
. •
Unit
=
sqrn•
~
,
Taking output
=
3000 sqm(225cum)10 •
\
\•
a) Labour
•
Mate
day 0.40
•
Mazdoor inclUding for blOOming of key agg!l!gates
day 6.00
•
Mazdoor skilled
day 2.00
• •
- *~-• ,
Reference to MoRT&H
Road Works: S-Bases and SurfaceCllUI1lC(Bituminous)
Description Unit Quantity Rate
Rs.
b) Machinery
Hydraulic self propelledchip spreader hour both for aggregates and key aggregates
@ 1500 sqm per hour for 3000 x 3 sqm
Bilumenpressure distributorfor hour 3000 x 2 sqm@ 1750 sqm per hour
TIpper 5.5 cum capacity hour
Vibratory roller 8 tonnes hour Front end lOader1 cum bucket capacity hour c) Material
Bitumen 30 kg per 10 sqm@ 15 kg tonne per 10sqm for each layer
Crushed sloneOOllfSeaggregate passing cum 53 mm and retained on 2.8 mm sieve
@ 0.5 cum per 10 sqm for each layer
Key aggregates passing22.4 mm and cum retained on 2.8 mm sieve @0.13 cum
per10sqm
d) Overhead charges @ % on (a+b+c) e) Contractor's profit@ % on (a+b+c+d) .cost for 3000 sqm
=
a+b+c+d+eRate per sqm = (a+b+c+d+eV3000 2lippers will be neededto matchthe capacity of hydraulic chip spreader and front end loader.
Sr.
No.
5.6.
i
thE I
Road Wodcs: 5-1lases and SurfiIce Course (Bitumin9US)
4
. Description Unit Quantity
R" •
.~
Reference to MoRT&H Specifications
507 Dense Graded Bituminous Macadam
Provid"lIlgand /aying dense graded bittlminous macadam with 100-120 TPH batch type HMP Producing an average output of 75 tonne per hour using crushed aggregates of specified grading, premixed with bituminous binder
@4.0 to 4.5 per cent by w~ight of total mix and filler, transporting the hot mix to work site, laying With a hydrostatic paver finisher with sensor conlrolto the required grade, level and alignmel)t, rolling with smooth Wheeled, vibraloly and .tandem roUers to achieve the desired compaction as per MoRT&H Specifications Clause 507 complete in aU respects;
Unit
=
cumTaking output =195 cum (450 tonne) a) Labour
Mate day
MazdoorWOrkingwilh HMP, mechanical day broom, paver, roUer,asphalt culler and
assistance for selling outlines, levels and layout of construction
SkiUed mazdoor for checking line and day levels
0.84 16.00
5.00
b) Machinery •
Batch mix HMP @ 75 tonne per hour Paver finisher hYdrostatic With sensor control @ 75 cum per hour
Generalor250 ~A
Front end loader 1 cum bucket capacity TIpper 10 tonne capacity
Add 10 per cent of cost of carriage 10
cover cost of loadin!! and unloading
hour 6.00
hour 6.00
hour 6.00
hour 6.00
l.km 450 x L
$to No.
o o o
Reference to MoRT&H SpeGificatlons
Road Works:.5-Bases ODdSurface Cowse (Bi1llminous)
Description
Smoothwheeled roller8-10 tonne for initial break down rolling
Vibralolyroller 8 tonne for intermediate romng
Finish rollingwith 13-8tonne smooth wheeledtandemroller
Unit Quantity Rate Rs.
hour 6.00 x 0.65*
hour 6.00 x 0.65*
hour 6.00 x 0.65*
c) Materials
I) Bitumen @ 4.25 per cent of weight tonne 19.13 of mix
iI) Aggregate
Total weight of mix<=450 tonne Weight of bitumen = 19.13tonne
Weight of aggregate'" 450 -19.13=430.87 tonne Taking density of aggregate
=
1.5 ton/cum Volume of aggregate=
287.25 cum • Grading - I 40 mm (Nominal Size) 37.5 - 25 mm 22 percent25 -10 mm 13 percent
10-4.75mm 19 percent
4.75 mm and below .44 per cent Filler @2 per cent of weight of aggregates OR
Grading ~ Ii 19.mm (Nominal Size)
25-10mm 30 percent
10 - 5 mm , 28 percent 5 mm.and below 40 per cent Filler@2 per cent of weight of aggregates
* Anyone of the alternativesmay be adopted as per approveddesign.
d) Overhead cllarges @ % on (a+b+c) e) Contractor's profit
«II
% on (a+b+c+d) Cost for 195 cum=
a+b+c+d+eRate per cum" (a+b+c+d+e)l195
133
Road Worb: S-Bases and Smface Course (Bilulllinous)
t
• •
>;~ 4
Sr. Reference to Description Unit Quantity Ra~
No. MoRT&H
Rs .•
Specifications
•
Note: *1. Although the rollers are required only for 3 ....
hours as per noons of output, but the same have to be available at site for six hours as the hot mix plant and paver will take six hours for mixing and paving the output of 450 tonne considered in this analysis.
To cater for the idle period of these rollers, their Usage rates have been multiplied by . a factor of 0.65.
134
2. Quantity of Bitumen has been taken for analysis purpose. The actual quantity Viill depend upon job mix formula.
3. labour for traffic; control, walch and ward and other miscellaneous duties at site including sundries have been included in administrative overheads of the·contractor.
4. In case DBM is laid over freshly laid tack coal, provision of mechanical broom and 2 mazdoors shan be deleted as the same has been included in the cost of tack coal
,
.
I
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\ .;
\.
~5. The individual density for each size of aggregates to be uSed for construction i.e. • 37.5-25 mm, 25-10 mm etc. should be found in the laboraloly 'and accordingly the quantities should be ammended for use in field. The average density of 1.5 tonne/cum . is only a reference density in this Data Book.
6. The individual percentage of aggregates should be calculated from the total weight . of dry aggrega~ i.e. excluding the weight of bitumen. The weight of filler will also be 2 per cent by weight of dry aggregates.
•••••
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Road Works; >Bascsand Surface Course (Bituminous)
,
, .
Sr•. Reference to DescriPtion Unit Quantity Rate
No. MoRT&H Rs.
Specifications
5.7.
sOs
Semi-Dense Bituminous ConcreteProviding and laying semi-dense bituminous . concrete with 100-120 TPH batch type HMP producing an average output of 75 tonne per hour using crushed aggregates of specified grading, premixed with bituminous. binder
@ 4.5 to 5 per cent of mix and filler.
transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, Jevel and
alignment, rolting with smooth wheeled, "
vibratory and tandem rollers ~oachieve the desired compaction as :per MoRTo&H Specifications Clause 508 complete in all respects.
Unit
=
cumTaking output
=
195 cum (450 tonne) a) Labour.Mate day 0.84
Mazdoorworking with HMP, mechaniCal day 16.00 broom, paver, roller, asphalt cutter and
assistance for setting out lines, levels and layout of construction
Skilled mazdoor for checking line and day 5.00 levels
b) Machinery
Batch mix HMP @75 tonne per hour hour 6.00 Paver finls~r hydrostatic with sensor hour 6.00 control @75 cum per hour
Generator 250 KVA hour 6.00
Front end loader 1 cum bucket capacity hour 6.00
Tipper 10 tonne capacity t.km 450xL
Add 10 per cent of cost of carriage to cover cost of loading and unloading
135
I~
tRoad Worb: S·Basesand Surface Course (Ilituminousj
«
f
Description . Unit Quantity RatEf
Rs"
Reference to MoRT&H Specifications
Smoothwheeled roller 8-10 tonne for hour initial break down rolling
Vibratory roller 8lonne for intermediate hour rolling
Finish rolling with 6-8lonne smooth hour wheeled tandem roller
c) Material
• Grading I: 13 mm (Nominai Size)
I) Bitumen @ 4,5 per cent of weight of mix tonne Ii) Aggregate
Total weight of mix = 450 tonne Weight of bitumen = 20.25 tonne Weight of aggregate = 450 -20.25
= 429.75 tonne Taking density of aggregate = 1.5 ton/cum Volume of aggregate = 286.5 cum
13.2 - 10 mm 20 per cent cum
10-5mm 38 percent cum
5 mm and below 40 per cent cum Filler@ 2 per centofweight of aggregates tonne OR
Grading II: 10 mm
I) Bitumen @ 5 per cent of weight of mix tonne weight of mix = 450 tonne
Ii) Aggregate
Total weight of mix = 450 lonne Weight of bitumen = 22.5 tonne
Weight of aggregate = 450 -22.50=427.50 tonne
Taking densityof aggregate= 1.5
tonIcuni
Volume of aggregate = 285 cum 9.5 - 4.75 mm @ 57 per cent 4.75 and below @ 41 percent
Filler@2 per cent of weight of aggregates
•
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sr.
No.
Referlilnce to
MoRT&H
Specifications
Note:
RoadWorks: 5-Bases IIId Surfac:eCourse (Bituminous)
Description
* Anyone of the alternative may be adopted as per approved design.
d) Overhead charges @ % on (a+b+c) e) Contractor's proflt@ % on (a+b+c+d) Cost for 195 cum =a+b+c+d+e
Rate per cum =.(a+b+c+d+e}l195
*1. Although the rollers are required only for 3 hours as per normsOfoutput, but the same have tobeava.iableatsite for six hours as the hot mix ~ntand paver will take six hours for mixing and paving the output of 450 tonne considered in thiSllnalyllis. To cater for the idle period of these rollers, their usage rates have been multiplied by a factor of 0.65.
2. Quantity of Bitumen has been taken for anlllysis purpose. The actual quantity will depend upon job mix formula.
3. Labour for traffic control, watch and ward lind other miscellaneous duties at site including sundries have been included in administrative overheads of the contractor.
4. In case SDBC is laid over freshly laid tack coat, proviSion of broom and 2 mazdoor shall be deleted as the same has been included in the cost of tack coal
5. The quantity of bitumen to be adjusted as per job mix formula.
137
Unit Quantity
Rate
Rs.
. . ·c .
Sr. Reference to Descrlptllm Unit Quantity Rat&'
No. MoRT&H Specifications Rs.
"
5.8. 509
h
Road Works: S-Bases and SurIiIce Course (BibmiiDous)
Bituminous Concrete
Providing and laying bituminous concrete with 100-120 TPH. batch type hot mix plant producing an average OUlputof75 tonne per hour using crushed aggregates of specified grading, premixed with bituminous binder
@ 5.4 to 5.6 per cent of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment; rolling with smooth Wheeled, Vibratory and tandem COltersto achieve the desired compaction as per MoRT&H Specifications Olause 509 complete in all respects.
Unit=cum
Taking output =191 cum (450 tonnes) a) Labour
Mate day
Mazdoorworking with HMP, mechanical day broom, paver, roller, asphalt culler and
assistance ·for setting outlines, levels and layout of construction
Skilled mazdoor for checking fine and levels day
0.84 16.00
5.00 b) Machinery
Batch mix HMP @75 tonne per hour Paver finisher hydrostatic with sensor control @75 cum per hour
Generator 250 KVA
Front end loader 1 cum bucket capacity Tipper 10 tonne capacity
Add 10 per cent of cost of carriage to cover cost of loading and unloading
Smooth wheeled roller 8-1 0 tonne for hour initial break down rolling
hour 6.00
hour 6.00
hour 6.00
hour 6.00
l.km 450xL
6.COxO.65·
:~
Reference to MoRT&H Spe'clflcatlons
Road Works: $-Bases and SmfaceCOUTSe (Bituminous)
DesCription Unit Quantity Rate
Rs.
hour 6,00 x 0,65*
Vibratory roller 8 tonne for intermediate rolling
Finish rolling with ~ tonne smooth wheeled tandemroller
hour 6,00 x 0.65*
c) Material
I) Bitumen @ 5 per'cent of weight of mix tonne II) Aggregate '
Total weight of miX
=
450 tonne Weight of bitumen" 22.5 tonneWeight of agg~ate =450·22.50 =427.50 tonne Taking densily ofaggregate
='
1.5 ton/cum Volume of aggtegate=285 cumpradln9 -
119 mm (NomlnaISJ.ze)20 - 10 mm 35 per cent cum
10 - 5 mm 23 percent cum.
5 mm and below 40 per cent cum
Filler@ 2 per cent of weight of aggregates tonne OR
Grading -II 13 mm (Nominal Size)
13.2 -10 mm 30 percent cum
10 - 5 mm 25 percent cum
5 mm and below 43 per cent cum
Filler @ 2 per cent of weight of aggregates tonne
* Anyone of the altematlves may be adopted as per approveddesign.
d) Overhead charges @ % on (a+b+c) e) Contractor's proflt@ % on (a+b+c+d) Cost for 191 cum •• a+b+c+d+e
Rate per cum" (a+b+c+d+e)l191
139
I
,~.Road Worb: S-Ilasesand Surface Course (Bituminous)
~
Sr. Reference to Description
Unit Quantity
Flit.
No. MoRT&H Specifications Rs.
Note:
'1. Although the rollers are required only for 3 hours as per noons of output, but the same have to be available at site for six houis as the hot mix plant and paver will take six hours for mixing and paving the output of 450 tonne considered in this analysis. To cater for the idle period of these rollers, their usage rates have been multiplied by a factor of 0.65.
2. Quantity of Bitumen has been taken for analysis pUrpose. The actual quantity will depend upon job mix fonnula.
3. labour for traffic control, walch and ward and other misceUaneous duties at site including sundries have been inclUded in adminislIative overheads of the contractor.
4. In case Be is laid over freshly leidtack coat, provision of mechanical broom and 2 mazdoors shall be deleted as the same has been inclUded in the cost of tack coat 5. The individual density for each size of
aggregates to be used for conslrUcIioni.e.
37.5-25 mm, 25-10 mm etc. should be found in the laboratory and acconlingly the quantities should be ammended for use in field. The average densily of 1.5 tonne/cum is only a reference density in this Data Book.
6. The individual percentage of aggregates should be calculated from the total weight of dry aggregates I.e. excluding the weight of bitumen. The weight of filler will also"be 2 per cent by weight of dry aggregates.
140
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Road Wmks: 5-Bascsand SurfacoCourse (Bituminous)
~r. Reference to Description Unit. Quantity Rate
No, MoRT&H Rs.
Specifications
5.9. 510 Surface Dressing
Providing and laying surface dressing as wearing course in single coat using crushed stone aggregates of specified size on a layer of bituminous binder laid on prepared surface and roPing with 8-10 tonne smooth wheeled steel roller.
Unit
=
sqmTaking output
=
9000 sqmCase - I :- 19 mm nominal chipping slxe
al Labour
Mate day 0.44
Mazdoor day 9.00
Mazdoorskilled day
2.00-bl Machinery
Mechanical broom @1250 sqm per hour hour 7.20
Air compressor 250 cfm hour 7.20
HydraUlic self propelled chip spreader hour 6.00
@1500 sqm per hour
Tipper totonile capacity for carriage of hour 6.00 stone chips from stockpile on roa<I side
to chip spreader
Front end loader 1 cum bucket capacity hour 6.00
Bitumen pressure distributor hour 6.00
Smooth wheeled roller 8-10 tonne weight hour 6.00
cl Material
Bitumen @ 1.20 kg per sqm tonne 10.80
Crushed stone chipping, 19 mm nominai cum 135.00 size @0.015 cum per sqm
d) Overhead charges @ %on (a+b+cl
141
a) Labour
Mate day
Mazdoor day
MazdO()rskilled day
0.44
Sr: . Reference to Descrlp60n . Unit .Quantlty Rae"
i~"'~
No. MoRT&H·
.. Rs.
.. Specifications
" ."
e) Cantractor's profit@ %on (a+b+c+d) Cost for 9000 sqm
=
a+b+c+d+eRate per sqm
=
(a+b+c+d+e)l9000 Case - II : 13 mm nominal size chippingb) Machinery
Mechanicalbroom@ 1250sqm per hour hour 7.20
Aircompressor250 cfm hour 7.20
Hydraulic self prnpelledchip spreader hour 6.00
@1500sqmperhour
TlPP8r10 tonnecapacityfor carriage of hour 6.00 stone chips from stockpile on road side
to chip Spreader
,
Front end loader 1 cum bucket capacity hour 6.00 Bitumen pressuredistributor@1750 sqm hour 6.00 perhaur
Vibratory roller 8-10 tonneweight hour 6.00
;
•..., •...
..~'\.
"l'i;
c) Material
Bitumen @1.ookg per sqm tonne
C~hed stone chipping, 13 mm nominal cum size @ 0.01 cum per sqm
9.00 90.00
d) Overhead charges @ %on (a+b+c) e) Contractor's profit@ % on (a+b+c+d)
142
Cost for 9000 sqm
=
a+b+c+d+eRate per sqm
=
(a+b+c+d+e)l9000b •
• •
•
5.10.
o o o
Reference to MoRT&H Specifications
Note:
511
Road Works: S-Bases and Surface Course (Bituminous)
Description Unit. Quantity Rate
Rs.
1. Where the proposed aggregate fails to pass the stripping test, an approved adhesionagentmaybe addedto the binder as per Clause510.2.4.Alternatively, chips may be pre-coatedas perClause 510.2.5.
2. Input for the second.coal,where reqUired, will be the same as per the ist coat mentionedabove
Open -Graded Premix Surfacing
Providing,laying and rolling ofopen~ graded premix surfacing of 20 rnrn thickness 'COlllposedof 13.2mmto 5.6,mmaggregates
either using penetrationgrade bilun1enor cut-back or emulsion to required line, grade and level to serve as wearing course on a previously preparedbase, inclUdingmixing in a suitable plant, laying and rolling with a.
smooth wheeled roller 8-10 tonne capacity, finished to requiredlevel and grades.
Unit=sqm
Taking output = 10250sqm (205 cum) Case • I: MechanIcal method using penelratlongrade bitumen and HMPof approp.rlate capacity not less than 75 tonnelhour
a) Labour
Mate day 0.84
Mazdoorworkingwith HMP, road sweeper, day 16.00 paverand roller
Skilled mazdoor for checking line and day 5.00 levels
b) Machinery
i) Batch type HMP 75 tonne per hour hour il) Electric generator set 250 KVA hour iii) Front end loader 1 cum bucket capacity hour
w) TIpper 10 tonne capacity t.km 143
6.00 6.00 6.00 450xL
Road Wocb: 5-Bases and Surface Course (BilUminoUS)
-Sr. Reference to Description
Unit Quantity Rat:···
No. MoRT&H
Rs.
Add 10 per cent of cost of carriage to cover cost of loading and unloading
~ Paver finisher hydrostatic with sensor allachment
i.I) Smooth wheeledltandom roller 8-10 Ionne weight
c) Material
Bitumen @ 14.60 kg per 10 sqrn Crushed stone chipping, 13.2 mm to 5.6 mm @0.27 cum per 10 sqm
d) Overhead charges @ % on (a+b+c) e) Contractor's profit @ % on (a+b+c+d) Cost for 10250sqm =a+b+c+d+e
Ratepersqm = (a+b+c+d+e)l10250
If a premix sand seal coat of 'B' type is proPOsed, the same is required to be provided over the open graded premix carpet immediately on the same day. As the same HMP and other machines will be used for laying of premix sand seal coat, out of 6 effective working hours, 4.00 hours may be utilised for laying of premix carpet and balance 2.00 hours for the seal coal. The rate for the premix sand seal coat under Clause 513 (Case II) has been worked out accordingly by Utilising the HMP for 2.00 hours for the purpose of seal coal. In case type 'N seal coat is Proposed, HMP can be worked for six hours for the premix carpet as type 'A' seal coat does not require the use of HMP."'
144
6.00
.hour 6.00
Ionne cum
14.97 276.75
I
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Sl'.
No.
Road Works:S-Basesand Surface Course (Bituminous)
Reference to MoRT&H·
Specifications
Description .unit Quantity Rate
Rs.
Case -II: Open-graded premix surfacing using cationic bitumen emulsion
Unit
=
sqmTakingoutput
=
900 sqm (24;3cum) a) LabourMate day C.BO
Mazdoor day 18.00
Mazdoorskilled day 2.00
b) Machinery
Concretemixer0.410.28cum capacity hour 6.00 Smoothwheelechsteelroller8-tO tonne hour 6.00 c) MaterIal
CalionicBitumen [email protected] tonne 1.94 per10sqm
Crushedstoneaggregates13.'2mmto cum 24.30 5.6 mm @ 0.27 cum per 10 sqm
d) Overhead charges @ % on (a+b+c) e) Contractor's profit@ % on (a+b+c+d) Costfor 900 sqm =a+b+c+d+e
Rate per sqm
=
(a+b+c+d+e)/900145
Road Works: ,S.Basesand Surface Course (Bilumm,ous)
S~.
No.
Re~erence to
MoRT&.H
Specifications
Description
5.11. 512
Close-Graded Premix Surfacing/Mixed Seal SUrfacing
Case - I : Mechanical means using HMP of appropriate capacity not less than 75 tonnelhour.
Providing, laying and rolling of close-graded premix sUrfacing material of 20mm thickness composed of 11.2 mm to 0,09 mm(TYPfil-A) or 13.2 mm to 0.09 mm (Type-B) aggregates usingpenetralion grade bitumen lothe required