Rs.
0.84 16.00
5.00
b) Machinery
Drum mix plantfor cold mixes60-90 tonne hclur per hour .producingaverage output of75
tonne per hour
Electric gen!lrator set 125'INA hour Front endtoad!lr 1 CumbuCketcapacity hour
TIpper 10 tonne capacity t.km
Add 10 per cent cost of carriag!l to cover cost of loading and unloading
Pavlll'finisher •
Pneumatic tyred roller 12-15tonne
-. I .
Smooth wheeled steel tandom roller 6-8 tonne
c) Material
Bitumen emulsion @ 8 per cent FOler(lime) @ 2 per cent Aggregates size 37.5 to 19 mm-450 x 0.25·x 111.5
Aggregates size 19to 6 mm -450 x 0.3 x 111.5
Aggregates size 6 to 0.075 mm -450 x 0.35 x 111.5
d) Overhead charges @ % on (a+b+c) e) Contractor's proflt@
0"
on (a+b+c+d) Cost for 205 cum = a+b+c+d+eRate per cum
=
(a+b+c+d+e)l205163
6.00
6.00 6.00 450xL
hour 6.00
hour 6.00x0.65*
hour 6.00 x 0,65*
lonnll 36.00 tonne 9.00
cum 75.00
cum 90.00 .
cum 105.00
a-J
Works: 5-BasosIlld SurfaceCoone (Bi_inous)Sr. Reference to Description .unit Quantity Rate
No. MoRT&H Specifications Rs;
Note: 1. Density of aggregates has been assumed 1.5 gmslce
2. Tack Coatwhere providedWiDbe measured . and paid separately.
*3. Though the rollers are required only for 3.5 hours each as per norms of oirlpu~ but these are required to be available at site for 6 hours as the drum mix plant and the paver would lake 6 hours for mixing and paving. To cater for the idle period, their usage rates have been multiplied by a ractor of 0.65.
Case - UI : Using cutback bitumen and 9.5 mm or 13.2 mm nominal size aggregate
Composition of mix (450 tonne) Is assumed to be as under:
Cutback bitumen 5 percent
Filler (lime) 2 percent
Total aggregates 93 per cent
Proportion of aggregates
19 mm to 9.5 mm 26 percent
9.5 mmt06 mm 31 percent
6 mm to 0.075 mm 36 percent
a) Labour
Mate day 0:84
Mazdoor
day 16.00
Mazdoor skilled
day 5.00
164
• •
• •
RoadWorks: 50_and SurfaceCourse(Bituminous)
Reference to Descrtptlon Unit Quantity Rate
MoRT&H Rs.
specifications
b) Machinery
Drum mix plant for cold mixes 60-90 tonne hoUr 6.00 per hour prodl!Cing average output of75
tonne per hour
Electric generator set 125 IW A 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
Paver finisher hour 6.00
Pneumalic tyred roller 12-15 tonne hoUr 6.00 x0.65* . Smooth wheeled steel tandem roOerlj..8 hour 6.00 x0.65*
tonne e). Mattrial
CutbaCk bitumen @ 5 per cent tonne 22,50
• Filler (lime)@ 2 per cent tonne 9.00 Aggregates size 19 to 9.5 mm • cum 78.00 450 x 0.26 x 1/1.5
Aggregates size 9.5 to 6 mm - cum 93.00 450 x 0.31 x 111.5
Aggregates size 6 to 0.075 mm
-'-. 108.00 cum
450 x 0.36 x 1/1.5
d) Ovtrhtad chargts @ 0/.on (a+b+c) e) Contractor's profit@ % on (a+b+c+d)
Cost for 205 cum = a+b+c+d+e Ratt per cum
=
(a+b+c+d+t)l205..Nott: 1. Density of aggregates has been assumed 1.5 gmslcc
2. T~coatwhereprovldedwillbemeasured and paid Sllparately.
165
Sr.
No.
Reference to.
MoRT&H Specifications
Rood WOIb: S-Bases and Surfac:eCourse (Biluminous)
Oescrlptlori
*3. Thoughthe rollersare requiredonly for 3.5 hours each as per nonns of outpu~ but these are required to be available at site for 6 hours as the drum mix plant and the paver would lake 6 hours for mixing and paving. To cater for the idle period, their usage rates have been multipfied
!:ly
a factor of 0.65 ..Case - IV : Using cutback bitumen and 19 mm or 26.5 mm nominal size aggregate Composition of mix (450 tonne) is assumed to be as under:
Cutbackbitumen Filler
Totataggregates
5 percent 2 per cent 93 percent Proportion of aggregates
37.5 mm to 19 mm ts mrntos mm 6 mm to 0.075 mm
25 perC8llt 30 per cent 38 percent a) Labour
Mate day
Ma2door day
Mazdoorskilled day
b) Machinery
Drummix plantfor cold mixes60-90tonne hour per hour producing output of 75 tonne
per hour
Electricgenerator set 125KVA hour Frontend loader 1 cum bucket capacity hour Tipper 10 tonne capacity t.km Add 10 per cent of cost of carriage to
covercost of loading and unloading
166
0.84 16..00
5.00
6.00
6.00 6.00 450xL
• •
• •
Reference to MoRT&H specifications
.
.
Road Works : 5-Bases and Surface Course (BibJrninous)
Description
Paver finisher
Pneumatic lyred roller 12-15 tonne Smooth wheeled steel tandem roller l).8tonne
c) Material
Cutback bitumen on @ 5 per cent Filler (lime) @ 2 per cent
Aggregates size 37.5 to 19 10m -450 x 0.25 x 1/1.5
Aggregates size 19 to 6 10m -450 x 0.3 x 1/1.5
Aggregates size.6 to Q.Q75 10m • 450 x 0.38 x 1/1.5
d) Overhead charges @
"6
on (a+b+c)e) Contractor's profit@ %on (a+b+c+d) Cost for 205 cum =a+b+c+d+e •
Rate per cum
=
(a+b+c:+d+e)/205Note: 1. Density Ofaggregates has been assumed .1.5gmlcc.
2. Tack coat where provided will be measured and paid separately.
'3. Though the rollers are required only for 3.5 hours each as per norms of output; but these are required to be available at site for·6 hours as the drum mix plant and the paver would take
6
hOurs for mixing and paving. To cater for the idle period, their usage rates have been multiplied by a factor of 0.65.167
Unit Quantity Rate
Rs.
hour .hour . hour
6.00 6.COx 0.65' 6.00 x 0.65'
tonne 22.50
tonne 9.00
cum 75.00
cum 90.00
cum 114.00
Road Works: 5-BaseslIIIdSurface Course (Bituminous)
Sr. Reference to Description Unit Quantity
No. MoRT&H Specifications
5.19. 520 Sand Asphalt Base Course
Providing, laying and rolringsand-asphall base course composed of sand, mineral filler and
~ituminous binder on a prepared sUb-grade or sub-base to the lines, levels, grades and cross-sections as per the drawings including mixing in a plant
0;
suitable type and capacity, transporting; laying, compacting and finishing.Unit =cum
Taking output =205 cum (450 tonne) a) Labour
Mate day 0.84
Mazdoor day 16.00
• Mazdoor skilled day 5.00
b) Machinery
Hot mix Plant of appropriate capacity hour 6.00 bul'noUess than 75 tonneJhour
Electric generator set 250 KVA hour 6.00 Frontend loader 1 cum bucket capacity hour 6.00
lipper 10 tonne capacity t.km 450xl
Add 10 per cent of cost of carriage to cover
r· \ cost of loading and unloading
;.. \,
Paver finisher hour 6.00
\( -"'.~:
Smooth wheeled roller 8-10 tonne for hour 6.00 x 0.65*initial break down rolling
Vibratory roller 8 tonne for intennediate hour 6.00 x 0.65*
roUing
Finish rolling with 6-8 tonne S!!lOOth hour 6.00 x0.65*
wheeled tandol11rollers
\68
•••••
• •
• •
c
Reference to MoRT&H specifications
Note:
Road Wod<s: 5-Bases and Surface Course (Bituminous)
Description Unit Quantity Rate
Rs.
c) Material
Compo~ltlon of mix (450 tonne) is assumed to be as under:
DensitY 2.20 tonne per cum
Weight 450 tonne
Bitumen 5 per cent
Filler . 2 per cent
Sahdofsize4.75to 93 percent 0.075mm
Bitumen @5 percent Filler (lime) @ 2 per cent Sand of size 4.75 to 0.075mm-450 x 0.93 x 1/1.5
tonne tonne cum
d) Qverheadcharges@ % on (a+b+c) e) ContraCtor's profit @ %on (a+b+c+d) Cost for 205 cum
=
a+b+c+d+eRate per cum
=
(a+b+c+d+e)l2051. Tack coat wiD be measured and paid separately.
"2. Although the rollers are required only for 3 hours as per norms of output, but the same have to be available at site for six hjlUrs 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 perlod, their usage rates have been multiplied by a factor of 0.65.
.. ,
Sr.
No.
5.20.
Reference to MoRT&H Specifications
521
Road WorIcs: SoBasos and SUrface Coone (Bituminous)
Description Unit Quantity
Modified Binder
Supply of modified binder produced by mixing bitumen with modifier such as natural rubber or crumb rubber or any other polymer found compatible with bitumen and which allows properties given in Clause 521.3 and IRC:SP:
53 blencflll9 of modifier with bitumen to be done either at the refinery or central unit with all facilities by proper industrial process, Is essential.
Unit
=
tonneThe use of modified binder is expectedioresult in an extended service life of bituminous pavelJlllnts· subject to heavy traffic ·Ioadsin extremeclimaliccbnditions, tIlusjuslifyirlg the entire cost of adding modifiers/fibres. Other advantages incllide lower temperature susceptibility, higher resistance to aging, higherfatigue life, higherresi$tancetocracking and better adhesion between aggregates and binder.
Detailed information and b1duclive dose level on the use of polymer modified binder is available in JRC:SP:53-2002. A number of proprielary products are now available in the market For such proprietary products, test reports and cost effectiveness should be the basis tor their seledion in road works. . The modifier, in the required quantity, shall be
blended at the refinery or central unit with all facilities by proper industrial process, is essential. If supplied in drums it shall be agitated in melted condition with suitable device for achieving homogeneity.
170
• •
• •
Road Works: S-Bases and Surface C"""'" (Bituminous)
~erence to
MoRT&H speclflcat!ons
Descrlptlon
Unit QuantityProposals to use glass fibre. polypropylene fibres or any other similar material in a bituminoUsmixture should be substantiated.
completewith alldetails including test resultS, manufacturer'srecommendationsfor addition or means of incorporating the fibres, homogenEigusly. without segregation, Into·
the mixture.
Before agreeing to the useof.afibre. it should have been proved to be satisfactOry in use under circumstances. similar to the work, elsewhere or it would ·have undergone appTOllriale'performlltlcelrials. Documented evidence of use and tria1sof.thefibre. In any country havingcondition! similar to Iridianwin be acceptable.
Where information on use of trials is inadequate·or lacking.trials may be required to be under taken before agreeing to the use of th~ fibre.
Note: 1. The modified binder Is usually manufactured by specialised finns as a proprietaryproduell'herate forthlsproducl . is required to be ascertained from the market.
2. The specificationsfor various item ofroad works using polymer/rubber· modified bitumens are same as those for penetration grade bitumen except those for any special conditions Which the manufacturermay indicate.
Rate
Rs.••.•. ~:I ..
.
"~:.!
•
Rood Works: SOB••••• 1IdSurfacoCouno (BibgninMs)
~
Reference to DesCription Unit
•
Sr. Quantity
No. MoRT&H ~
Specifications ~
3. The other controls during mixing, Iayirlg
4
shaa be same as specified In IRC : 14,29, ~
94 and 95 for Open graded premix carpel, . bituminous concrete, DBM and SDBC
1
respectively. ~
4. The temperature of mixing am:! rolling will
4
be slightly higher than conventional
4
bituminous mixes as indicated in Table 8
-t
of IRC:SP:53-2002.
41
5.21. 522 Crack Prevention Courses
AI
Case • I: stress absorbing me!1lbrane
t ,
(SAM) crack width Ie:se than 6 mm
Providing and laying of a stress absoJbirlg membrane over a cracked road surface, with crack width below 6 mm after cleaning with a mechanical-broom. using modified. binder complying with Clause 521, sprayed at the rate of 9 kg per 10 sqm and spreading 5.6
mm crushed stone aggregates @0.11 COm per 10 sqm with hydraulic chip spreader, sweeping iIle surface for uniform spread of aggregates and surface finished to conform to Clause 902.
Unit=sqm
Taking output = 10500 sqm
a) Labour
Mate day 0.24
Mazdoor day 6.00
172
• •
• •
Road Wod<s: 5-Bascs and SurfaccCourse-(Bi!umiDous)
sr,
Reference to Description \Jnlt Quantity RateNo.
MoRT&HRs.
Specifications
b) Machinery
Mechanical broom@ 1250 sqm per hour hour 6.00
J!\jrcompressor 250 cfm hour 6.00
.Bitumen pressure distributor @ 1750 sqm hour 6.00 per hour
Hydraillicchip spreader hour 6.00
Smooth wheeled road roller 8-1 0 tonne hour 6.00
c) Material
Modified billder tonne 9.45
Crushed stone aggregates 5.6 mm size cum 105.00 d)Ovemead charges@ % on (a+b+c)
e) Contractor's proflt@ %on (a+b+c+d) Cost for 10500 sqm =a+b+c+d+e
Rate per sqm =(a+b+c+d+e)/10500 Case _II : Stress absorbing membrane (SAM) with crack width 6 mm to 9 mm
Providing and laying of a stress abs0rbiA9 membrane over a cracked road surfac:e. wilh crack widlh6 109 mm after cleaning with a
mechanical broom, using modified binder complying wilh Clause 521, sprayed at Ihe rate of11 kg per 10 sqm and spreading 11.2 mm crushed stone [email protected]'COO1 per 10 sqm, sweeping the surface for uniform spread of aggregates and surface finished to conform to Clause 902.
Unit =sqm
TakingoiltpUt= 10500sqm
. a) Labour
Mate day 0.24
Mazdoor day 6.00
f"
Col
f".'(", (",
f"
c:
C
{'
C
('
f
{
r
( C
( (
173
RDad WOIb: 5-llasesand Surface Course (Biluminous)
$r•..-, Reference· tQ . Description Unit . Quantity Rate
No. MoRT&H Rs.
Specifications
b) Machinery
Mechanical broOm @ 1250 sqm per hour Air compressor 250 cfm capacity . Bitumen pressure distributor@ 1750 sqm per hour
Hydraulic chip spreader
Smooth wheeled road roller 8-10 tonne .
c) Material Modffied binder
Crushed stone chipping 11.2 mm size
d) Overhead charges @ %on (a+b+c) e) Contractor's profIt@ % on (a+b+c+d)
Cost
tor
10500 $qm ,. a+b+c+d+e.
Rate per sqm
=
(a+b+c+d+e)l10500Case - III : Sues. a,bsotblng membrane (SAM)crackwldtll above 9 mm and cracked area above 50 per cent
Providing and layil)lJ a single coat of a stress absorbing membrane over a cracked road surface, with crack width above 9 mmand cracked area above 50 per cent a.lter cleaning with a mechanic;albroom, using modified binder compJyingwith Clause 521, sprayed at the rate of 15 kg Per 10 sqm and spreading 11.2 mm crushed stone aggregates @ 0.12 cum per 10 sqm, sweeping the surface for uniform spread of aggregates and surface.
finished to conform to Clause 902.
Unit
=
sqmTaking output
=
10500 sqm174
hour hour hour
hour 'hour
tonne cum
6.00 6.00 6.00
6.00 .6.00
11.55 105.00
• •
• •
Reference to