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1
Internship report
A Project Report for the internship
8/07/2015 -7/8/2015
By
Navneet Kumar-(13BCL0322)
Submitted to
Internal guide: Muthukumar M
Associate Professor, SCALE, VIT University
2
The Bihar Museum Project
Patna
3
L&T Construction, B&F IC
4
Acknowledgement
I wish to express my sincere gratitude to my guide Mr. Suresh Kumar Sethi for his guidance, I
also thank the project manager Mr. Ashok Kumar for providing the opportunity to do the
internship and project work at “Patna museum project”.
I sincerely thank Mr. M R Das, Mr. S K Das, Mr. Vikram Kumar, Mr. Amit pal, Mr. Eliyaz
Khan for the guidance and encouragement provided during the training period.
I also thank Mr. Kamlesh sir for the guidance in completing the project.
5
Index
Chapter page no.
1. About company 6-7
2. About project 8-12
3. EHS 13-22
4. Structural work 23-27
5. Finishing 27-46
6. QA/QC 46-53
7. Summary 54
6
Chapter 1
About company….
Larsen & Toubro Limited (L&T) is a technology, engineering, construction and
manufacturing company. It is one of the largest and most respected companies in India's private
sector.
Seven decades of a strong, customer-focused approach and the continuous quest for world-class
quality have enabled it to attain and sustain leadership in all its major lines of business.
L&T has an international presence, with a global spread of offices. A thrust on international
business has seen overseas earnings grow significantly. It continues to grow its overseas
manufacturing footprint, with facilities in China and the Gulf region.
The company's businesses are supported by a wide marketing and distribution network, and have
established a reputation for strong customer support. L&T believes that progress must be
achieved in harmony with the environment. A commitment to community welfare and
environmental protection are an integral part of the corporate vision.
7
OPERATING DIVISIONS
The following are the operating divisions of Larsen & Toubro:
 Building and Factories
 Transportation Infrastructure
 Heavy Civil Infrastructure
 Power Transmission and Distribution
 Renewable Energy
 Water & Effluent Treatment
 Smart World & Communication
 L&T Geostructure
 Metallurgical & Material Handling
8
Chapter 2: About project
2.1 The Bihar Museum Project.
 Name of project: Bihar Museum Project
 Location of project: southern flank of Jawaharlal Nehru marg, bailey road,
Patna
 Date of commencement: 3rd
June 2013
 Project value and current: 280cr.
 Current workman strength: 1300.
 Area of project: 25000 m2
 Architectural design: Maki &Associates (Japan), Opolis architect (Mumbai)
 Construction Company: L&T constructions B&F IC.
 Consultants: Lord cultural resources (Canada based consultancy)
9
2.2 General site layout plan.
Figure -1
Location of the project:
Front side of project: Bailey road
Back side of project: south bailey road
10
Figure -2
The construction area is divided into two zones; zone 1 and zone 2. Zone 1 have four blocks
1-Block A
2-Block B
3-Block C
4-Block J
Zone 2 has six blocks
1-Block D 4- Block G
2-Block E 5-Block H
3-Block F 6-Block k
11
2.3 Master plan
Figure -3
2.4 Description of blocks
Block Description Structural system Max. Height
Block A G+1 Conventional Slab system +12.6m
Block B G+1 Conventional Slab system +11.4m
Block C G+5 Conventional & Flat Slab system +26.45m
Block D G+1 Conventional & Flat Slab system +7.2m
Block E G+1 Conventional & Flat Slab system +7.2m
Block F G+2 Conventional Slab + Precast System +18.6m
Block G G+2 Conventional Slab + Precast System +18.6m
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Block H G+2 Conventional Slab + Precast System +18.6m
Block J G+1 Conventional Slab system +7.2m
Block K G+1 Elevated connecting Bridge +13.05m
The museum will bring the region’s thousand years history into focus, inspiring local residents
and visitors from across the globe to explore Bihar’s rich heritage, historic sites and cultural
attractions.
The proposal for Bihar museum includes four core exhibition galleries, educational, lobby,
administrative and permanent gallery.
13
14
15
Chapter 3 :Environmental, health and safety department
Cluster EHS manager- Sujit Saha
EHS in charge – M R Das
EHS engineer – Rajeev Kumar
EHS inspector –
1. Maniksenapati
2. Sachidanand
3. Sanjayesrivastav
4. Dinesh kr. Sukhla
16
3.1 Activities at site...
1. Shuttering, Rebar tying and Concreting of Column, wall and Slab at UG Sump
2. Stone Cladding & Structural glazing
3. Masonry work at site
4. Material shifting
5. Structural Fabrication & Erection.
6. Rebar cutting, bending and handling at Steel yard
7. Making at carpentry workshop
8. Waterproofing
9. Flooring
3.2 Certificate
The quality management system has been certified to ISO 9001-2008 slandered by LRQU.
EHS management also certified to ISO 14001 and OHSAS 18001.
ISO 14001
The ISO 14000 family of standards provides practical tools for companies and organizations of
all kinds looking to manage their environmental responsibilities.
ISO 14001:2004 and its supporting standards such as ISO 14006:2011 focus on environmental
systems to achieve this. The other standards in the family focus on specific approaches such as
audits, communications, labeling and life cycle analysis, as well as environmental challenges
such as climate change.
OHSAS 18001
OHSAH 18001 is an international health and safety management system specification.
It exists to help all kinds of organizations put in place demonstrably sound occupational health
and safety performance. It is a widely recognized and popular occupational health and safety
management system
17
3.3 General approach to EHS management.
The general approach to EHS management as per international standards ISO 14001 and OHSAS
18001 is based on the methodology called "Plan-Do-Check-Act".
PDCA in the EHS context can briefly be described as follow:-
-Plan, document the organization’s overall EHS aims and objectives in a policy statement,
identify and register environmental aspects and impacts and occupational health and safety risks
as well as regulatory requirements.
-Do, define EHS objectives and targets, and implement suitable strategic initiatives to deliver
results in accordance with the organization’s EHS policy and legal requirements.
-Check, monitor and measure the results against policy, objectives, targets and legal and other
requirements.
-Act, take action to continually improve the performance of the EHS management system
18
3.4 Basic safety rules:-
 Should adhere to wear required PPEs.
-safety helmet
-safety jacket
-safety footwear
 No loose cloths. Follow dress code.
 No Smoking at Site premises.
 Do not lean on edge protection handrails.
 Keep away from the electrical network
 Understand the safety signs and respect the barricades
 Do not enter into the area where barricading is done.
 Beware of moving vehicles inside the site.
 Never stand in the area where overhead work is happening.
 Do not throw any materials from height.
 Don’t leave any loose materials at height.
 Do not work or enter into the area where there is no light source.
 Do not sit / sleep on the wall / floor edges.
 While climbing on any ladder / scaffolding / shuttering, take the help of any responsible
person of that area.
 Do not misuse or damage any equipment / arrangement made in the interest of health,
safety and environment.
 Do not run at site unless there is an emergency.
 Do not touch any electrical equipment.
 Electrical apparatus should not be altered.
 Never come under the suspended load. (Watch for tower crane movement)
3.5 Potential hazards at site
Height works
Hot works
Electricity
Movement of Earth Moving Equipment’s / Vehicle (Traffic)
19
3.6 EHS practices followed at site.
1. Environment:-
Figure -5 Tree restoration at site campus
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2. Health:-
Figure -6 Medical checkup by visiting doctor.
3. Safety
Figure -7 Use of safety net
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Figure -8 fire extinguishers at workmen colony
Figure -9 external platform arrangment.
22
Figure -10 Block c periphery covered with safety net for trapping material
Figure -11 Safety net at Block A
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Chapter 4 :Structural work
4.1 Boundary wall:-
Structural detail
Height of PCC =100mm
Height of RCC =300mm
Wall thickness =250mm
Total height = 2400mm
Reinforcement dia.= 10mm
Footing width =1250mm
Grade of PCC =M15
Grade of RCC =M30
Workability =120±25
Exposer type = moderate
Method of concrete placing =pumping
Characteristic compressive strength @ 28 days= 30N/mm2
Target strength =
Assumed std. deviation = 5.0 as per as the IS 456:2000 table 8
=fck+t*SD
=30+1.65*5
=38.25N/mm2
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Figure -12 Boundary wall
25
Structural drawing of boundary wall
Figure -13
26
4.2 Water feature
Height of PCC =100mm
Height of RCC =100mm and 150 mm
Vertical reinforcement bar of parapet wall = 8mm (dia.)
Horizontal reinforcement bar of parapet wall =10mm
Reinforcement bar of drop wall
Main bar dia. =10 mm
Binder =10 mm
Slab reinforcement bar dia. =10 mm
Structural drawing-
Figure -14
27
Pool section detail-
Figure -15
Figure -16 Water feature in front of Block A
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chapter 5: finishing
1. Water proofing
- Toilet water proofing
- Roof water proofing
2. Cladding
- Sandstone cladding
- Granite cladding
- Cotton steel cladding
- Terracotta cladding
3. Flooring
- Granite flooring
-Kota stone flooring
- Terrazzo flooring
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5.1 Water proofing
5.1.1 Roof water proofing
Material required:
1. Hydrocem 7. Geo textile membrane
2. CEBEX 100 8. Tikidan APP membrane
3. Cement 9. Bitumen primer
4. Sand 10. PVC pipe
5. Perlite 11. Stone
6. XPS board 12. polymer
Plant and equipments:-
Bosch drill machine, hammer, grouting pump machine, chisel, gas torch flame, batching
containers.
Step performed in water proofing:
1. Preparation of surface
-Clean the surface properly; no dust material should be present on the surface.
- All damage surface and cracks should be repaired
- Level the surface.
- Pond the base slab with water to check linkages for 48 hours.
-find out the leakage point.
- open the area of leaking point , joints, cracks in form of grooves of approximately 25 mm width
1.Injection grouting with CEBEX100
- drill the holes in crack.
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- fix thePVC nozzle in the drilling hole vertically in joints and inclined in the crack surface.
- using the grouting pump, inject grouting material ex- cement slurry, CEBEX100 into PVC
nozzle.
CEBEX100 grouting admixture of 225 gm per bag of Cement.
- cut the nozzle after grouting.
- make the surface of roof wet prier to application of polymer modified cement coating.
3.Hydrocem coating
Preparation of hydrocem solution.
- It is a mixing of two compounds in ratio of 1:1.
1) Liquid hydrocem.
2) Powder hydrocem.
-After adding stir the mixture
-No water or other material should add into the mixture.
- Two coating of hydrocem should be applied with the drying interval of 4 hours.
-Ponding should be done for 3 days to test water tightening.
4.Perlite concrete layer
MIX DESIGN
Cement =280kg/m3
, perlite =150 kg/m3
, water =297 kg/m3
, microair720 = 7 lit/m3
Ratio of mix per bag of perlite
Cement: perlite: water: microair720=31.73:17:33.66:0.793
- mix the ingredient in the given mix design ratio
- Clean the surface, the surface should not have water.
- laying of perlite concrete approximate density 1200 kg per m3
.
-Maintain a slope and the thickness should vary from 75-150 mm.
5.Laying of screed
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Mix design
Cement: sand = 1: 4.
Width of screed = 25 mm over the perlite concrete.
Finishing of screed should be smooth.
Curing should be done for three days.
6.Tikidan APP membrane
-apply bitumen primer coating throughout the roof; 0.2lit to 0.3 lit per sq. is consumed.
-laying tikidan APP membrane over the primer coating
-thickness of APP membrane is 4 mm.
- lay APP membrane on the same day when the primer is done
- Fuse the thermo fusible on the bottom side of membrane with gas torch flame should be moved
in shape of L.
- applyabout 75% of heat to the raft and 25% to the membrane.
- When the film melt immediately role the membrane forward and press firmly.
7. XPS board
Thickness of board = 75 mm
-Laying ofXPS board on tikidan APP membrane.
8. Vapour barrier sheet
- Installation of 400 microns thick vapour barrier PVC sheets over XPS board
9. layer of geotextile membrane
Place geotextile membrane over vapoursheet.
10. Concrete screed
-Place 50 mm thickness of concrete screed over the geo textile cloth.
-Curing of concrete screed for seven days
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11.use of micro concrete.
Cut out /periphery joints of pipe to be filed with micro concrete.
Layer wise drawing for roof water proofing
Figure -17
.
33
Figure -18 Drilling at leakage points
Figure -19 Grouting process at cracks
34
Figure -20 Grouting at joints
Figure -21 Hydrocem coating
35
Figure -22 Perlite concerte
Figure -23 Screed layer and Tikidan
36
5.1.2 Water proofing treatments to toilet and other wet area…
Procedure.
- Preparation of surface with the help of brush and thoroughly clean.
- All damage should be repaired
- Highly undulated surface should be drilled to make concrete smooth for application.
- Ponding should be done for 48 hours.
-mark the leaking point with the help of chalk
- drill the leaking point with the Bosch drilling machine and joints.
- Fix the nozzle in drilled area.
- Using grouting pump inject grouting material ex- cement slurry, CEBEX100 into PVC nozzle.
- cut the nozzle after grouting.
- making the surface wet prior to application of polymer.
-apply two coating of hydrocem with the interval of four hours on the surface.
- apply two coating of hydrocem with the interval of four hours on the wall up to one meter
height
- Basecoat plaster of average 12 to 15 mm thick in cement mortar ratio 1:3 on masonry wall as a
base coat.
- Junction of wall and floor sealed by applying of strip polyester or polypropylene mesh of 100
mm wide embedded between 2 coat of hydrocem coating.
-protective screed 20-25 mm in C: M=1:3 on the floor area
-provide the treatment in chases in the wall.
-fill the Cut out /periphery joints of pipe to be filed with micro concrete.
-periphery joint of pipe should be sealed with P.J sealant or silicon sealant.
37
5.2 Cladding
5.2.1 Sandstone dry cladding
Materials used:-
1. Sand stone
-Honed sand stone
-sort sand stone
2. Clips
3. Anchor
4. Fasteners
5. Approved laticrete sealer for protective layer.
Dimension of stone used at site:
Honed sandstone-895mm*295mm
Sort sandstone-595mm*295mm
Equipments:-
Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob,
etc.
Procedure:-
- The unloading of sandstone at the site should be done carefully to avoid any damage to the
sandstone
- Material should be directly delivered to the storage.
- QA/QC Engineer would check the Quality of material. The damage material should be kept
separately and good material should be kept at other storage.
- Stone dimension shall be verified before fabrication of work.
- Using brush and acid type cleaning agent to clean the sand stone
- Apply the sealer in the cold environment ex. evening or morning, on all six faces.
38
- 24 hours of curing of sealer should be done.
- QA/QC engineer will check the quality of sealer on all six faces and approved stone is used in
cladding and rejected stone will be applied sealer again.
-after doing marking of proper level, first the S.S clamp are fixed with SS anchor fastener on the
wall with the drill and hammer.
- Then drilling is done on the stone to put the clamp inside.
- Stone are fixed as per as the drawing.
- Generally two clamps are used.
- The minimum gap between wall and cladding should be 100mm.
- 5mm clear groove is maintained in between two stones in both horizontal and vertical direction
as per as the drawing.
- After completion of one elevation, it should be properly checked for vertically with plumb bob.
- Final cleaning should be done with clear water.
Figure -24 putting the sandstone
39
Figure -25 Cladding of sand stone on external area.
Figure -26 Block J External Sand Stone cladding.
40
5.2.2 Black Granite cladding
Size of granite blocks used at site: -1195 mm*895mm*30 mm
Material used:-
1. Black granite
2. Anchor
3. Fasteners
4. Approved laticrete sealer for protective layer.
5. Clamps
Equipments:-
Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob,
etc.
Procedure:-
- The unloading of granite at the site should be done carefully to avoid any damage to the
granite.
- Granite dimension should be verified before installation of work.
- Apply the sealer in the cold environment ex. evening or morning, on all six faces and 24 hours
of curing of sealer should be done.
-after doing marking of proper level, first the S.S clamp are fixed with SS anchor fastener on the
wall with the drill and hammer.
- Then drilling is done on the granite to put the clamp inside.
- Granite are fixed as per as the shop drawing.
- Generally three clamps are used.
- The minimum gap between wall and cladding should be 100mm.
- 5mm clear groove is maintained in between two granite in both horizontal and vertical
direction as per as the drawing.
41
- After completion of one elevation, it should be properly checked for vertically with plumb bob.
- Final cleaning should be done with clear water.
Granite cladding.
Figure -27 Granite cladding
42
5.2.3 Terracotta cladding:-
Materials:-
1. Terracotta
2. Anchor Fastener
3. SS clamps.
4. Cement
5. sand
Equipments:-
Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob,
etc.
Dimension of Terracotta used at site:-590mm*90mm*65mm
Procedure:-
-Approved drawing is used for cladding work
-Location and orientation marking on vertical plane is done so that they are right side up when
the unit is installed.
-the bricks are put one by one keeping 10 mm groove both in horizontal and vertical direction.
Figure -28 Terracotta cladding
43
5.3 Flooring
5.3.1 Granite flooring
Materials:-
1. Granite
2. Laticrete 190 sealer
Dimension of granite used at site
-600mm X 600mm*30mm
-300mm*300mm*30mm
-1200mm*600mm*30mm
Equipments:-
-Trowel
- Wooden/rubber hammer
-laser level instrument
-stone cutting tool
-spirit level
-Straight Edge
Procedure:-
-unloading of granite stone should be done carefully.
- QA/QC engineer would check the Quality of material. The damage material should be kept
separately and good material should be kept at other storage.
- carry out post check on level of screed concrete where flooring should be done and review the
minimum thickness of tile.
-the surface/substrate should be cleaned to remove any dirty stain and other foreign material
before installation.
- Proper care should be taken for interface with other associate finish.
44
-coating of Laticrete190 sealer in all six sides of stone should be advanced before 24 hours of
fixing.
-The granite should be laid down on the floor as per as the drawing.
-After preparing the adhesive, it should be laid on the floor to the required level of thickness as
per as the manufacture specifics.
- 3mm spacers should be used as per as the drawing.
- Then stone should be put over the already laid adhesive checking periodically that the good
contact is maintained with the back of each stone to ensure zero voids.
- The line, level, joint evenness, hollowness and slope should be checked during installation.
-The joints are cleaned with brush to remove mortar and dust.
-Start the polishing after 10 days of lying of stone.
Figure -29 Granite flooring at J block
45
5.3.2 Kota stone flooring:-
Material:-
1. Kota stone
2. Sand
3. Cement
Equipments:-
-Trowel
- Wooden/rubber hammer
-auto level
-stone cutting tool
-spirit level
-Straight Edge
Procedure:-
-unloading of Kota stone should be done carefully.
-QA/QC officer would check the Quality of material. The damage material should be kept
separately and good material should be kept at other storage.
- carry out post check on level of screed concrete where flooring should be done and review the
minimum thickness of tile.
-the surface/substrate should be cleaned to remove any dirty stain and other foreign material
before installation.
- Proper care should be taken for interface with other associate finish.
-laying cement mortar (sand: cement =1:4) over surface of thickness 30 mm.
-Press stone firmly into position with slide twisting action.
- insure no voids behind stone when solid bed fixing.
46
-joints should be cleaned and grout the same with slurry.
- check the line and kevel joint’s evenness, hollowness, and slope during installation.
- 7 days of curing should be done.
- start the polishing after 10 days; and polish the surface till up to the level.
- clean the surface
Figure -35 Kota stone cleaning at c block
47
Chapter 6: Quality Assurance/ Quality Control
QA/QC in charge – SK Das
48
6.1 QUALTIY PLANNING
Quality Objectives
The Quality objectives are derived from Quality policy. Table 5.1 below enumerates a list of
Suggested Quality Objectives for operations applicable at project site. Various units /
departments and individuals at functional level would derive list of objectives from the table.
For the project sites the objectives are set at the time of project commencement. The progress is
reviewed at site.
No Objective
Measure
Target
Report
frequency
1
Customer
Value
 Product Quality Rating
 Customer feedback
 Pre-commissioning Obligations
Quarterly
2 Process
Plan vs. Actual:
 Project milestones
 Financial performance
 Cost prudence
 Safety Records
Monthly
3 Improvements
 Safety performance
 Cycle Time
 Cost of poor Quality
 Wastage Reduction
 Product Quality rating
Monthly
4 Leadership
Development of future leaders
Half-yearly
5 Motivation
 New initiatives
 Innovations
 Staff training effectiveness – evaluation
Quarterly
49
6 Partnerships
 Assimilation of technology from JV
partners.
 Vendors developed
 Performance evaluation of vendors – of
site purchases
 Performance evaluation of sub-contractors
Quarterly
Suggested Quality Objectives
The desired / target values are set based on the following:
- Past performance in similar jobs;
- Growth over period of time;
- Contractual commitments;
- Aligning to annual financial budgets/ accepted costs as per ACE;
- Meeting the PQP requirements.
For each of the key position value drivers are defined, monitored and measured which adds up to
the Quality objectives for the function. Similarly, the target objectives of a department / unit are
attained through value drivers of the key positions.
6.2 Quality Management System Planning
Objective:-
Establish a procedure to plan, monitor and achieve Quality Management System planning in
order to fulfil customer requirements, statutory requirements and organization objectives based
on contractual requirement.
Sl.
No.
Procedure Steps Responsibility
1.
Prepare strategy for the project to ensure
a. Quality of product
b. Safety
c. Timely delivery
Site Engineer
Site Engineer
Planning Engineer
50
Sl.
No.
Procedure Steps Responsibility
2
Convert the strategy into initiatives for the site team and
establish Quality Objectives for each position of the project
and periodically review as planned.
PI
3.
Document the needs / expectations of customer, organization
and statutory bodies in PQP and implement.
All Sections
4 Evaluate process and product performance by Audits. All sections
5
Improve performance of process and products following
management review meeting.
All sections
6
Maintain system integrity during changes in PQP for
improvement.
MR (Site)
Some test performs in quality lab:
Moisture content, silt content, cube test, brick test, sieve analysis, sand gradation, cement
fineness test, consistency of cement, setting time of cement, compressive strength of cement etc.
6.3 Quality control during cladding:-
During our visit at site we performed many quality checks.
Following procedures are involved in the Quality check of cladding.
- Quality check should be done by QA/QC inspector and material inspection report shall be
raised to engineer for their approval.
- Color, texture, chip up, size, diagonal size, thickness, height, and length of stone should be
checked.
- Sealer coating should be checked by the QA/QC inspector in all six faces
-If stone absorbs water it means that sealer coating is not done properly.
- Alignment of cladded wall should be checked
Quality check of granite
51
Figure -30 Quality check of granite
Granite absorbs water, sealer coat not done properly
52
6.4 Quality control of water proofing:-
QA/QC officer should know about the construction program and should attained all inspection
point and record all result of inspection.
6.5 Some tests performed in the lab of QA/QC
6.5.1 Cube test:-
Size of cube use =15*15*15
Grade of cube =M35
Compressive strength of cube is checked:-
Results:( in N/mm2
)
40.67, 38.92, 34.25, 41.73, 29.2,
Maximum target Strength= Average compressive strength+ risk factor* stander deviation
=35+1.65*5
=43.25 N/mm2
Minimum target Strength = Average compressive strength- risk factor* stander deviation
=35-1.65*5
=26.75 N/mm2
Remark:
The cube is safe for use as it lies between maximum and minimum target strength
53
6.5.2 Brick test:-
Following procedure are followed in the brick test
Size
- Measure the length, breadth and depth of the bricks and using the data calculate average size of
the bricks
Compressive strength
- Find out the area of Bricks and find out the compressive load.
- using above data to calculate average strength.
Water Absorption
- Find out weight of dry bricks (w1)
- find out Weight of wet Bricks (w2)
W= (w2-w1)/w1 *100
Using above formula calculate average water absorption of bricks.
54
Chapter 7 :Summary
As a civil engineering student I got a very wonderful opportunity to come over here in this
“Bihar Museum Project”. The methods used at the construction site have which I have seen here
have helped me a lot and will do in future.
During the training period I have learned a lot about how the work is executed on the site. Under
the guidance of site Engineers I have gained a lot of practical Experience
During my training period I have mostly focused on structural work, waterproofing, cladding,
and flooring. L&T have one of the best safety methods during the construction and I have
learned a lot about the safety rules of site.
The quality of construction which L&T provides is one of the best in the country, I have learned
about the different QA/QC approach which the company uses in construction.

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Internship report 2015 (1)

  • 1. 1 Internship report A Project Report for the internship 8/07/2015 -7/8/2015 By Navneet Kumar-(13BCL0322) Submitted to Internal guide: Muthukumar M Associate Professor, SCALE, VIT University
  • 2. 2 The Bihar Museum Project Patna
  • 4. 4 Acknowledgement I wish to express my sincere gratitude to my guide Mr. Suresh Kumar Sethi for his guidance, I also thank the project manager Mr. Ashok Kumar for providing the opportunity to do the internship and project work at “Patna museum project”. I sincerely thank Mr. M R Das, Mr. S K Das, Mr. Vikram Kumar, Mr. Amit pal, Mr. Eliyaz Khan for the guidance and encouragement provided during the training period. I also thank Mr. Kamlesh sir for the guidance in completing the project.
  • 5. 5 Index Chapter page no. 1. About company 6-7 2. About project 8-12 3. EHS 13-22 4. Structural work 23-27 5. Finishing 27-46 6. QA/QC 46-53 7. Summary 54
  • 6. 6 Chapter 1 About company…. Larsen & Toubro Limited (L&T) is a technology, engineering, construction and manufacturing company. It is one of the largest and most respected companies in India's private sector. Seven decades of a strong, customer-focused approach and the continuous quest for world-class quality have enabled it to attain and sustain leadership in all its major lines of business. L&T has an international presence, with a global spread of offices. A thrust on international business has seen overseas earnings grow significantly. It continues to grow its overseas manufacturing footprint, with facilities in China and the Gulf region. The company's businesses are supported by a wide marketing and distribution network, and have established a reputation for strong customer support. L&T believes that progress must be achieved in harmony with the environment. A commitment to community welfare and environmental protection are an integral part of the corporate vision.
  • 7. 7 OPERATING DIVISIONS The following are the operating divisions of Larsen & Toubro:  Building and Factories  Transportation Infrastructure  Heavy Civil Infrastructure  Power Transmission and Distribution  Renewable Energy  Water & Effluent Treatment  Smart World & Communication  L&T Geostructure  Metallurgical & Material Handling
  • 8. 8 Chapter 2: About project 2.1 The Bihar Museum Project.  Name of project: Bihar Museum Project  Location of project: southern flank of Jawaharlal Nehru marg, bailey road, Patna  Date of commencement: 3rd June 2013  Project value and current: 280cr.  Current workman strength: 1300.  Area of project: 25000 m2  Architectural design: Maki &Associates (Japan), Opolis architect (Mumbai)  Construction Company: L&T constructions B&F IC.  Consultants: Lord cultural resources (Canada based consultancy)
  • 9. 9 2.2 General site layout plan. Figure -1 Location of the project: Front side of project: Bailey road Back side of project: south bailey road
  • 10. 10 Figure -2 The construction area is divided into two zones; zone 1 and zone 2. Zone 1 have four blocks 1-Block A 2-Block B 3-Block C 4-Block J Zone 2 has six blocks 1-Block D 4- Block G 2-Block E 5-Block H 3-Block F 6-Block k
  • 11. 11 2.3 Master plan Figure -3 2.4 Description of blocks Block Description Structural system Max. Height Block A G+1 Conventional Slab system +12.6m Block B G+1 Conventional Slab system +11.4m Block C G+5 Conventional & Flat Slab system +26.45m Block D G+1 Conventional & Flat Slab system +7.2m Block E G+1 Conventional & Flat Slab system +7.2m Block F G+2 Conventional Slab + Precast System +18.6m Block G G+2 Conventional Slab + Precast System +18.6m
  • 12. 12 Block H G+2 Conventional Slab + Precast System +18.6m Block J G+1 Conventional Slab system +7.2m Block K G+1 Elevated connecting Bridge +13.05m The museum will bring the region’s thousand years history into focus, inspiring local residents and visitors from across the globe to explore Bihar’s rich heritage, historic sites and cultural attractions. The proposal for Bihar museum includes four core exhibition galleries, educational, lobby, administrative and permanent gallery.
  • 13. 13
  • 14. 14
  • 15. 15 Chapter 3 :Environmental, health and safety department Cluster EHS manager- Sujit Saha EHS in charge – M R Das EHS engineer – Rajeev Kumar EHS inspector – 1. Maniksenapati 2. Sachidanand 3. Sanjayesrivastav 4. Dinesh kr. Sukhla
  • 16. 16 3.1 Activities at site... 1. Shuttering, Rebar tying and Concreting of Column, wall and Slab at UG Sump 2. Stone Cladding & Structural glazing 3. Masonry work at site 4. Material shifting 5. Structural Fabrication & Erection. 6. Rebar cutting, bending and handling at Steel yard 7. Making at carpentry workshop 8. Waterproofing 9. Flooring 3.2 Certificate The quality management system has been certified to ISO 9001-2008 slandered by LRQU. EHS management also certified to ISO 14001 and OHSAS 18001. ISO 14001 The ISO 14000 family of standards provides practical tools for companies and organizations of all kinds looking to manage their environmental responsibilities. ISO 14001:2004 and its supporting standards such as ISO 14006:2011 focus on environmental systems to achieve this. The other standards in the family focus on specific approaches such as audits, communications, labeling and life cycle analysis, as well as environmental challenges such as climate change. OHSAS 18001 OHSAH 18001 is an international health and safety management system specification. It exists to help all kinds of organizations put in place demonstrably sound occupational health and safety performance. It is a widely recognized and popular occupational health and safety management system
  • 17. 17 3.3 General approach to EHS management. The general approach to EHS management as per international standards ISO 14001 and OHSAS 18001 is based on the methodology called "Plan-Do-Check-Act". PDCA in the EHS context can briefly be described as follow:- -Plan, document the organization’s overall EHS aims and objectives in a policy statement, identify and register environmental aspects and impacts and occupational health and safety risks as well as regulatory requirements. -Do, define EHS objectives and targets, and implement suitable strategic initiatives to deliver results in accordance with the organization’s EHS policy and legal requirements. -Check, monitor and measure the results against policy, objectives, targets and legal and other requirements. -Act, take action to continually improve the performance of the EHS management system
  • 18. 18 3.4 Basic safety rules:-  Should adhere to wear required PPEs. -safety helmet -safety jacket -safety footwear  No loose cloths. Follow dress code.  No Smoking at Site premises.  Do not lean on edge protection handrails.  Keep away from the electrical network  Understand the safety signs and respect the barricades  Do not enter into the area where barricading is done.  Beware of moving vehicles inside the site.  Never stand in the area where overhead work is happening.  Do not throw any materials from height.  Don’t leave any loose materials at height.  Do not work or enter into the area where there is no light source.  Do not sit / sleep on the wall / floor edges.  While climbing on any ladder / scaffolding / shuttering, take the help of any responsible person of that area.  Do not misuse or damage any equipment / arrangement made in the interest of health, safety and environment.  Do not run at site unless there is an emergency.  Do not touch any electrical equipment.  Electrical apparatus should not be altered.  Never come under the suspended load. (Watch for tower crane movement) 3.5 Potential hazards at site Height works Hot works Electricity Movement of Earth Moving Equipment’s / Vehicle (Traffic)
  • 19. 19 3.6 EHS practices followed at site. 1. Environment:- Figure -5 Tree restoration at site campus
  • 20. 20 2. Health:- Figure -6 Medical checkup by visiting doctor. 3. Safety Figure -7 Use of safety net
  • 21. 21 Figure -8 fire extinguishers at workmen colony Figure -9 external platform arrangment.
  • 22. 22 Figure -10 Block c periphery covered with safety net for trapping material Figure -11 Safety net at Block A
  • 23. 23 Chapter 4 :Structural work 4.1 Boundary wall:- Structural detail Height of PCC =100mm Height of RCC =300mm Wall thickness =250mm Total height = 2400mm Reinforcement dia.= 10mm Footing width =1250mm Grade of PCC =M15 Grade of RCC =M30 Workability =120±25 Exposer type = moderate Method of concrete placing =pumping Characteristic compressive strength @ 28 days= 30N/mm2 Target strength = Assumed std. deviation = 5.0 as per as the IS 456:2000 table 8 =fck+t*SD =30+1.65*5 =38.25N/mm2
  • 25. 25 Structural drawing of boundary wall Figure -13
  • 26. 26 4.2 Water feature Height of PCC =100mm Height of RCC =100mm and 150 mm Vertical reinforcement bar of parapet wall = 8mm (dia.) Horizontal reinforcement bar of parapet wall =10mm Reinforcement bar of drop wall Main bar dia. =10 mm Binder =10 mm Slab reinforcement bar dia. =10 mm Structural drawing- Figure -14
  • 27. 27 Pool section detail- Figure -15 Figure -16 Water feature in front of Block A
  • 28. 28 chapter 5: finishing 1. Water proofing - Toilet water proofing - Roof water proofing 2. Cladding - Sandstone cladding - Granite cladding - Cotton steel cladding - Terracotta cladding 3. Flooring - Granite flooring -Kota stone flooring - Terrazzo flooring
  • 29. 29 5.1 Water proofing 5.1.1 Roof water proofing Material required: 1. Hydrocem 7. Geo textile membrane 2. CEBEX 100 8. Tikidan APP membrane 3. Cement 9. Bitumen primer 4. Sand 10. PVC pipe 5. Perlite 11. Stone 6. XPS board 12. polymer Plant and equipments:- Bosch drill machine, hammer, grouting pump machine, chisel, gas torch flame, batching containers. Step performed in water proofing: 1. Preparation of surface -Clean the surface properly; no dust material should be present on the surface. - All damage surface and cracks should be repaired - Level the surface. - Pond the base slab with water to check linkages for 48 hours. -find out the leakage point. - open the area of leaking point , joints, cracks in form of grooves of approximately 25 mm width 1.Injection grouting with CEBEX100 - drill the holes in crack.
  • 30. 30 - fix thePVC nozzle in the drilling hole vertically in joints and inclined in the crack surface. - using the grouting pump, inject grouting material ex- cement slurry, CEBEX100 into PVC nozzle. CEBEX100 grouting admixture of 225 gm per bag of Cement. - cut the nozzle after grouting. - make the surface of roof wet prier to application of polymer modified cement coating. 3.Hydrocem coating Preparation of hydrocem solution. - It is a mixing of two compounds in ratio of 1:1. 1) Liquid hydrocem. 2) Powder hydrocem. -After adding stir the mixture -No water or other material should add into the mixture. - Two coating of hydrocem should be applied with the drying interval of 4 hours. -Ponding should be done for 3 days to test water tightening. 4.Perlite concrete layer MIX DESIGN Cement =280kg/m3 , perlite =150 kg/m3 , water =297 kg/m3 , microair720 = 7 lit/m3 Ratio of mix per bag of perlite Cement: perlite: water: microair720=31.73:17:33.66:0.793 - mix the ingredient in the given mix design ratio - Clean the surface, the surface should not have water. - laying of perlite concrete approximate density 1200 kg per m3 . -Maintain a slope and the thickness should vary from 75-150 mm. 5.Laying of screed
  • 31. 31 Mix design Cement: sand = 1: 4. Width of screed = 25 mm over the perlite concrete. Finishing of screed should be smooth. Curing should be done for three days. 6.Tikidan APP membrane -apply bitumen primer coating throughout the roof; 0.2lit to 0.3 lit per sq. is consumed. -laying tikidan APP membrane over the primer coating -thickness of APP membrane is 4 mm. - lay APP membrane on the same day when the primer is done - Fuse the thermo fusible on the bottom side of membrane with gas torch flame should be moved in shape of L. - applyabout 75% of heat to the raft and 25% to the membrane. - When the film melt immediately role the membrane forward and press firmly. 7. XPS board Thickness of board = 75 mm -Laying ofXPS board on tikidan APP membrane. 8. Vapour barrier sheet - Installation of 400 microns thick vapour barrier PVC sheets over XPS board 9. layer of geotextile membrane Place geotextile membrane over vapoursheet. 10. Concrete screed -Place 50 mm thickness of concrete screed over the geo textile cloth. -Curing of concrete screed for seven days
  • 32. 32 11.use of micro concrete. Cut out /periphery joints of pipe to be filed with micro concrete. Layer wise drawing for roof water proofing Figure -17 .
  • 33. 33 Figure -18 Drilling at leakage points Figure -19 Grouting process at cracks
  • 34. 34 Figure -20 Grouting at joints Figure -21 Hydrocem coating
  • 35. 35 Figure -22 Perlite concerte Figure -23 Screed layer and Tikidan
  • 36. 36 5.1.2 Water proofing treatments to toilet and other wet area… Procedure. - Preparation of surface with the help of brush and thoroughly clean. - All damage should be repaired - Highly undulated surface should be drilled to make concrete smooth for application. - Ponding should be done for 48 hours. -mark the leaking point with the help of chalk - drill the leaking point with the Bosch drilling machine and joints. - Fix the nozzle in drilled area. - Using grouting pump inject grouting material ex- cement slurry, CEBEX100 into PVC nozzle. - cut the nozzle after grouting. - making the surface wet prior to application of polymer. -apply two coating of hydrocem with the interval of four hours on the surface. - apply two coating of hydrocem with the interval of four hours on the wall up to one meter height - Basecoat plaster of average 12 to 15 mm thick in cement mortar ratio 1:3 on masonry wall as a base coat. - Junction of wall and floor sealed by applying of strip polyester or polypropylene mesh of 100 mm wide embedded between 2 coat of hydrocem coating. -protective screed 20-25 mm in C: M=1:3 on the floor area -provide the treatment in chases in the wall. -fill the Cut out /periphery joints of pipe to be filed with micro concrete. -periphery joint of pipe should be sealed with P.J sealant or silicon sealant.
  • 37. 37 5.2 Cladding 5.2.1 Sandstone dry cladding Materials used:- 1. Sand stone -Honed sand stone -sort sand stone 2. Clips 3. Anchor 4. Fasteners 5. Approved laticrete sealer for protective layer. Dimension of stone used at site: Honed sandstone-895mm*295mm Sort sandstone-595mm*295mm Equipments:- Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob, etc. Procedure:- - The unloading of sandstone at the site should be done carefully to avoid any damage to the sandstone - Material should be directly delivered to the storage. - QA/QC Engineer would check the Quality of material. The damage material should be kept separately and good material should be kept at other storage. - Stone dimension shall be verified before fabrication of work. - Using brush and acid type cleaning agent to clean the sand stone - Apply the sealer in the cold environment ex. evening or morning, on all six faces.
  • 38. 38 - 24 hours of curing of sealer should be done. - QA/QC engineer will check the quality of sealer on all six faces and approved stone is used in cladding and rejected stone will be applied sealer again. -after doing marking of proper level, first the S.S clamp are fixed with SS anchor fastener on the wall with the drill and hammer. - Then drilling is done on the stone to put the clamp inside. - Stone are fixed as per as the drawing. - Generally two clamps are used. - The minimum gap between wall and cladding should be 100mm. - 5mm clear groove is maintained in between two stones in both horizontal and vertical direction as per as the drawing. - After completion of one elevation, it should be properly checked for vertically with plumb bob. - Final cleaning should be done with clear water. Figure -24 putting the sandstone
  • 39. 39 Figure -25 Cladding of sand stone on external area. Figure -26 Block J External Sand Stone cladding.
  • 40. 40 5.2.2 Black Granite cladding Size of granite blocks used at site: -1195 mm*895mm*30 mm Material used:- 1. Black granite 2. Anchor 3. Fasteners 4. Approved laticrete sealer for protective layer. 5. Clamps Equipments:- Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob, etc. Procedure:- - The unloading of granite at the site should be done carefully to avoid any damage to the granite. - Granite dimension should be verified before installation of work. - Apply the sealer in the cold environment ex. evening or morning, on all six faces and 24 hours of curing of sealer should be done. -after doing marking of proper level, first the S.S clamp are fixed with SS anchor fastener on the wall with the drill and hammer. - Then drilling is done on the granite to put the clamp inside. - Granite are fixed as per as the shop drawing. - Generally three clamps are used. - The minimum gap between wall and cladding should be 100mm. - 5mm clear groove is maintained in between two granite in both horizontal and vertical direction as per as the drawing.
  • 41. 41 - After completion of one elevation, it should be properly checked for vertically with plumb bob. - Final cleaning should be done with clear water. Granite cladding. Figure -27 Granite cladding
  • 42. 42 5.2.3 Terracotta cladding:- Materials:- 1. Terracotta 2. Anchor Fastener 3. SS clamps. 4. Cement 5. sand Equipments:- Grinder, drill machine, steel hammer, Rubber hammers, Scaffolding, Level machine, plumb bob, etc. Dimension of Terracotta used at site:-590mm*90mm*65mm Procedure:- -Approved drawing is used for cladding work -Location and orientation marking on vertical plane is done so that they are right side up when the unit is installed. -the bricks are put one by one keeping 10 mm groove both in horizontal and vertical direction. Figure -28 Terracotta cladding
  • 43. 43 5.3 Flooring 5.3.1 Granite flooring Materials:- 1. Granite 2. Laticrete 190 sealer Dimension of granite used at site -600mm X 600mm*30mm -300mm*300mm*30mm -1200mm*600mm*30mm Equipments:- -Trowel - Wooden/rubber hammer -laser level instrument -stone cutting tool -spirit level -Straight Edge Procedure:- -unloading of granite stone should be done carefully. - QA/QC engineer would check the Quality of material. The damage material should be kept separately and good material should be kept at other storage. - carry out post check on level of screed concrete where flooring should be done and review the minimum thickness of tile. -the surface/substrate should be cleaned to remove any dirty stain and other foreign material before installation. - Proper care should be taken for interface with other associate finish.
  • 44. 44 -coating of Laticrete190 sealer in all six sides of stone should be advanced before 24 hours of fixing. -The granite should be laid down on the floor as per as the drawing. -After preparing the adhesive, it should be laid on the floor to the required level of thickness as per as the manufacture specifics. - 3mm spacers should be used as per as the drawing. - Then stone should be put over the already laid adhesive checking periodically that the good contact is maintained with the back of each stone to ensure zero voids. - The line, level, joint evenness, hollowness and slope should be checked during installation. -The joints are cleaned with brush to remove mortar and dust. -Start the polishing after 10 days of lying of stone. Figure -29 Granite flooring at J block
  • 45. 45 5.3.2 Kota stone flooring:- Material:- 1. Kota stone 2. Sand 3. Cement Equipments:- -Trowel - Wooden/rubber hammer -auto level -stone cutting tool -spirit level -Straight Edge Procedure:- -unloading of Kota stone should be done carefully. -QA/QC officer would check the Quality of material. The damage material should be kept separately and good material should be kept at other storage. - carry out post check on level of screed concrete where flooring should be done and review the minimum thickness of tile. -the surface/substrate should be cleaned to remove any dirty stain and other foreign material before installation. - Proper care should be taken for interface with other associate finish. -laying cement mortar (sand: cement =1:4) over surface of thickness 30 mm. -Press stone firmly into position with slide twisting action. - insure no voids behind stone when solid bed fixing.
  • 46. 46 -joints should be cleaned and grout the same with slurry. - check the line and kevel joint’s evenness, hollowness, and slope during installation. - 7 days of curing should be done. - start the polishing after 10 days; and polish the surface till up to the level. - clean the surface Figure -35 Kota stone cleaning at c block
  • 47. 47 Chapter 6: Quality Assurance/ Quality Control QA/QC in charge – SK Das
  • 48. 48 6.1 QUALTIY PLANNING Quality Objectives The Quality objectives are derived from Quality policy. Table 5.1 below enumerates a list of Suggested Quality Objectives for operations applicable at project site. Various units / departments and individuals at functional level would derive list of objectives from the table. For the project sites the objectives are set at the time of project commencement. The progress is reviewed at site. No Objective Measure Target Report frequency 1 Customer Value  Product Quality Rating  Customer feedback  Pre-commissioning Obligations Quarterly 2 Process Plan vs. Actual:  Project milestones  Financial performance  Cost prudence  Safety Records Monthly 3 Improvements  Safety performance  Cycle Time  Cost of poor Quality  Wastage Reduction  Product Quality rating Monthly 4 Leadership Development of future leaders Half-yearly 5 Motivation  New initiatives  Innovations  Staff training effectiveness – evaluation Quarterly
  • 49. 49 6 Partnerships  Assimilation of technology from JV partners.  Vendors developed  Performance evaluation of vendors – of site purchases  Performance evaluation of sub-contractors Quarterly Suggested Quality Objectives The desired / target values are set based on the following: - Past performance in similar jobs; - Growth over period of time; - Contractual commitments; - Aligning to annual financial budgets/ accepted costs as per ACE; - Meeting the PQP requirements. For each of the key position value drivers are defined, monitored and measured which adds up to the Quality objectives for the function. Similarly, the target objectives of a department / unit are attained through value drivers of the key positions. 6.2 Quality Management System Planning Objective:- Establish a procedure to plan, monitor and achieve Quality Management System planning in order to fulfil customer requirements, statutory requirements and organization objectives based on contractual requirement. Sl. No. Procedure Steps Responsibility 1. Prepare strategy for the project to ensure a. Quality of product b. Safety c. Timely delivery Site Engineer Site Engineer Planning Engineer
  • 50. 50 Sl. No. Procedure Steps Responsibility 2 Convert the strategy into initiatives for the site team and establish Quality Objectives for each position of the project and periodically review as planned. PI 3. Document the needs / expectations of customer, organization and statutory bodies in PQP and implement. All Sections 4 Evaluate process and product performance by Audits. All sections 5 Improve performance of process and products following management review meeting. All sections 6 Maintain system integrity during changes in PQP for improvement. MR (Site) Some test performs in quality lab: Moisture content, silt content, cube test, brick test, sieve analysis, sand gradation, cement fineness test, consistency of cement, setting time of cement, compressive strength of cement etc. 6.3 Quality control during cladding:- During our visit at site we performed many quality checks. Following procedures are involved in the Quality check of cladding. - Quality check should be done by QA/QC inspector and material inspection report shall be raised to engineer for their approval. - Color, texture, chip up, size, diagonal size, thickness, height, and length of stone should be checked. - Sealer coating should be checked by the QA/QC inspector in all six faces -If stone absorbs water it means that sealer coating is not done properly. - Alignment of cladded wall should be checked Quality check of granite
  • 51. 51 Figure -30 Quality check of granite Granite absorbs water, sealer coat not done properly
  • 52. 52 6.4 Quality control of water proofing:- QA/QC officer should know about the construction program and should attained all inspection point and record all result of inspection. 6.5 Some tests performed in the lab of QA/QC 6.5.1 Cube test:- Size of cube use =15*15*15 Grade of cube =M35 Compressive strength of cube is checked:- Results:( in N/mm2 ) 40.67, 38.92, 34.25, 41.73, 29.2, Maximum target Strength= Average compressive strength+ risk factor* stander deviation =35+1.65*5 =43.25 N/mm2 Minimum target Strength = Average compressive strength- risk factor* stander deviation =35-1.65*5 =26.75 N/mm2 Remark: The cube is safe for use as it lies between maximum and minimum target strength
  • 53. 53 6.5.2 Brick test:- Following procedure are followed in the brick test Size - Measure the length, breadth and depth of the bricks and using the data calculate average size of the bricks Compressive strength - Find out the area of Bricks and find out the compressive load. - using above data to calculate average strength. Water Absorption - Find out weight of dry bricks (w1) - find out Weight of wet Bricks (w2) W= (w2-w1)/w1 *100 Using above formula calculate average water absorption of bricks.
  • 54. 54 Chapter 7 :Summary As a civil engineering student I got a very wonderful opportunity to come over here in this “Bihar Museum Project”. The methods used at the construction site have which I have seen here have helped me a lot and will do in future. During the training period I have learned a lot about how the work is executed on the site. Under the guidance of site Engineers I have gained a lot of practical Experience During my training period I have mostly focused on structural work, waterproofing, cladding, and flooring. L&T have one of the best safety methods during the construction and I have learned a lot about the safety rules of site. The quality of construction which L&T provides is one of the best in the country, I have learned about the different QA/QC approach which the company uses in construction.