JHELL SIDING HOWRAH
Document Title
METHOD STATEMENT FOR PAVEMENT
QUALITY CONCRETE ROAD WORKS
Issued For Client
00 07.04.2020 Mr.KARTICK ADHIKARY Mr. UMESH PRASAD
Approval
Rev Date Purpose of Issue Prepared by Checked and Approved by
TABLE OF CONTENTS
Sl. No. Description
1.0 Introduction
2.0 Methods of Construction
3.0 Reference Specifications
4.0 Description Works
4.a Materials
4.b Tools Equipment’s and Appliances
4.c Forms
5.0 Execution Details
1. Introduction
This chapter describes the construction methodology and equipment planning for
construction of the main components of the project. The construction methodology for
Construction of 6 Mtrs. wide Concrete Road Including Both side Shoulder stage wise has
been described under the relevant sub sections of this chapter. The type and sizes of the
equipment to be used have also been indicated while describing the construction
methodology. The number of machines required for construction of each component
of the project has been worked out and total requirement for each type and size of the
major equipment has been arrived after preparing the construction/ deployment schedule
for main components of the project. In case, the work is executed through award of
contract, the contract or sin all probability may suggest their own construction techniques
and equipment for execution of the job based on equipment actually available with them.
The tentative requirement of machines as worked out here in will help in analysis of rates
of works, cost estimation and in evaluating the reasonableness of the participating
bidders’ construction techniques and equipment, within overall construction schedule and
cost estimate.
2.0Methods of Construction:
There are two distinct ways of construction of cement concrete pavement:
(a) Alternate Bay Method:
In this method, the construction of cement concrete pavement is taken up in alternate bays; the
bays left in the first instance are done after the concrete already laid gets hardened adequately-
one week in the case of ordinary Portland cement and two to three days for rapid hardening
cement.
(b) Continuous Method:
In this method all the bays of one lane are laid continuously; however, construction joints
are provided at the end of the day’s work.
Alternate bay method is said to have the following advantages:
(i) Availability of more working space for laying a bay of the slab.
(ii) Joint-provision is considered to be easy.
(iii) The bay laid earlier can stand the adjacent bay laid later.
However, the method also has the following disadvantages:
(i) More number of transverse joints.
(ii) Rain water pooling in rainy season in the bays left to be laid in the second stage.
(iii) Since no single lane is ready for traffic, the diversion of traffic during construction is a
disincentive.
(iv) Equipment has to be moved back and forth.
Although provision of joints involves more work in the continuous method, this method is preferred
because traffic diversion needs are minimal.
3.0 Reference Specification:
(a) (MSRT&H'S) / MORTH / Specification for Road & Bridge Works
(5th revision ‐2013.)
This code covers the requirements of fully mechanized construction as well as partly
mechanized and partly labour-oriented techniques.
It deals with various aspects of cement concrete road construction such as materials,
proportioning, measurement, handling and mixing, sub grade and sub-base preparation,
formation, joints, reinforcements, concrete mix laying, finishing, curing, and plant and
equipment
4.0 Description of Works:
Construction of Concrete Road including both sides shoulders to be constructed.
4. a Materials :
Cement: Portland Slag Cement Grade IS 455:2015 should be preferred.
Admixtures: CICO PLAST SUPER C-611 Superplasticiser / High Range Water Reducing
Admixture
Admixtures conforming to IS: 6925 and IS: 9103 may be used to improve
workability of the concrete or to extend setting time.
Aggregates: IS: 383:1970 specifications of coarse and fine aggregates from natural
sources for concrete,
Coarse Aggregates:
Coarse aggregates shall consist of clean, hard, strong, non-porous pieces of crushed stone
Confirming IS 383:1970 continuously graded or gap-graded aggregates may be used depending
on the grading of the fine aggregate.
Fine Aggregate:
Shall consist of clean natural sand and shall conform to IS: 383. It shall be free from organic
matter.
Water: Shall be clean and meet the requirements stipulated in IS 456:2000 Boring water is
Considered to be satisfactory for mixing and curing.
Steel: Shall confirm to IS: 1786; Fe 500D. Dowel bars shall confirm to Grade Fe 500D and tie
bars to Grade Fe500D of IS 1786. If steel mesh is used, it shall conform to IS: 1566.
4. b Tools, Equipment and Appliances:
These are specified separately for semi-mechanized construction and for fully mechanized
construction, covering the different phases of work such as sub grade and sub-base compaction,
concreting and formwork, concrete preparation, transportation, laying and compaction of
concrete, finishing, joints, curing, and cleaning and sealing of joints. Wet-mix macadam lower
sub-base and dry lean concrete sub-base may also be provided over which the paving concrete
may be laid for producing a superior type of concrete road.
4. c Forms : Side forms shall be of steel sections or wooden forms are permitted
Execution Details:
Excavation and Box cutting with mechanical means L & T Komatsu PC 71
hydraulic excavator & loading the excavated earth by mechanical means CASE
770 EX Backhoe Loader 1.1cumhydraulic excavator & transport to the
disposal area by mechanical means of hydraulic tractor 3-4 cylinder/dumper
5 cu. m. within the premises & backfilling / developing with excavated earth to
the low area as per site condition.
Levelling & laying & backfilling with courses sand up to required level as per
drawing.
Providing, laying, spreading and compacting up to end in sub base course
in uniform layer on a prepared base with motor grader and compacting with
power roller complete as per section 401 of Ministry of shipping, Roads,
transport &Highways (MSRT&H's) specification for road & Bridge works
(4th revision ‐2001) in two layer GSB I & GSB II
Providing dry lean cement concrete mix M5 (1:5:10) as per trial mix design
approved with PSC (IS 455:2015) cement, with 25mm and down size graded
coarse aggregate at 0.86cum and fine aggregates @ 0.58cum Sub base over
a prepared sub‐grade with (coarse and fine aggregate conforming to
IS: 383 aggregate cement ratio not to exceed 15:1,aggregate gradation after
blending to be as per Table 600‐ 1, cement content not to be less than 160 kg/
cum, concrete strength not to be less than 10 MPa at 7 days, mixed in a
batching plant, transported to site, compacting with 8‐10 tones vibratory roller,
finishing and curing complete as per specifications. MORTH Specification No.
601 Complete with all lead and lift and as per the direction of the
Engineer in charge.
Providing and laying in position separation membrane of 125 micro thickness
between DLC and PQC for concrete road as per MORTH Specification.
Providing and laying design mix cement concrete of M‐30 grade, PQC in
roads/taxi tracks/runways, using cement content as per design mix, using
coarse sand and graded stone aggregate of 40 mm nominal size in appropriate
proportion as per approved & specified design criteria, providing dowel bars
with sleeve/tie bars wherever required, laying at site, in panels (size as per
approved) spreading and compacting mechanically by using finishing with
required texture, including steel formwork with sturdy.
Providing and placing in position 25mm thick synthetic Expansion
Joint filler board (Dura Board HD 100 or equivalent) for
construction/expansion joint of RCC floor and other structure.
Making groove 5mm ‐ 6mm wide x 20mm ‐ 25mm depth in concrete heavy
duty flooring by mechanical diamond cutter true to the line for expansion of
floor, filling the groove with the paste of polysulphide based sealant up to
depth of15mm from top level.
0.500 Mtrs wide shoulder/footpath will be made with interlocking designer
concrete paver block M‐ 30 grade for non‐traffic zone as per
IS: 15658‐ 2006 over 100 mm medium sand bed over 100 mm thick.
Cement Concrete M15 Grade or as per drawing.
Separate provision of the equipment’s for this activity has not been kept as some of the
equipment’s to be deployed& can be utilized for transportation of sand required for filling
& other construction activities.
Note: Also we will construct as per approved Drawings and adopt the above statement
where laying the various type of cable.
