Civil Engineering - RK University [PDF]

Overlay design as per AASHTO-1993 guidelines. Reference Books: 1. Khanna S.K. and Justo C.E.G., “Highway Engineeringâ€

9 downloads 34 Views 122KB Size

Recommend Stories


[PDF] Dictionary of Civil Engineering
If you want to go quickly, go alone. If you want to go far, go together. African proverb

Civil Engineering
If you want to become full, let yourself be empty. Lao Tzu

Civil Engineering
Just as there is no loss of basic energy in the universe, so no thought or action is without its effects,

civil engineering
Life is not meant to be easy, my child; but take courage: it can be delightful. George Bernard Shaw

civil engineering
This being human is a guest house. Every morning is a new arrival. A joy, a depression, a meanness,

Civil Engineering
Don't watch the clock, do what it does. Keep Going. Sam Levenson

Civil Engineering
Every block of stone has a statue inside it and it is the task of the sculptor to discover it. Mich

Civil Engineering
If you feel beautiful, then you are. Even if you don't, you still are. Terri Guillemets

Civil Engineering
Raise your words, not voice. It is rain that grows flowers, not thunder. Rumi

Civil Engineering
Open your mouth only if what you are going to say is more beautiful than the silience. BUDDHA

Idea Transcript


RK University (Pre-registration coursework for PhD program) Program – PhD (Civil Engineering) Concerned Dean – Dr. Ajit Kumar Shukla (email – [email protected]) Sr. No. 1. 2.

3. Total

Subject Research Methodology

Contents

Method of Credits evaluation As per syllabus 4 Written mentioned below examination (3 hrs)

Subject of specialization:* Research topic specific 1. Finite Element Method 2. Hydrological Modeling 3. Structural Dynamics & Earthquake Engineering 4. Soil Stabilization and Soil Improvement Techniques 5. Pavement Design, Analysis and Evaluation 6. Basic Concepts Of Structural Behavior 7. Urban & Regional Transportation Planning 8. Environment Import Assessment & Audit 9. Concrete Technology

Review work

Review of literature for the PhD research topic

Written examination (3 hrs)

4

Presentation + Detailed report in hard copy

3

(*Shall be decided by the Dean of Faculty, individually, for each PhD scholar)

11

Notes – 1.

The admission process of PhD program will comprise of 2 stages viz. (a)

2.

A successful PhD candidate (RAT examination) will be admitted to PhD

3.

admission to PhD program (b) final registration in PhD program.

program after paying admission fees (Rs. 60000/-) and upon allocation of a PhD guide by RK University. An admitted PhD candidate

will have

to

submit

synopsis

and

presentation of his/her actual research project (in consultation with the PhD

guide approved and allocated by RK university) before Doctoral Research Committee (DRC) within 6 months from date of admission (date will be 4. 5. 6.

declared by university).

An admitted PhD candidate will be registered after earning minimum of 11 credits as per above mentioned course-work structure. The candidate will acquire

credit

of

a

subject

on

passing

the

examination that will be conducted at the end of 6 months (date will be declared by university).

On acquiring required credits, an admitted candidate will be issued a certificate of registration (along with project title) by RK University.

Course Title

Research Methodology Detailed syllabus

Research: Meaning, purpose, Types, (Educational, Clinical, Experimental, historical descriptive, Basic applied and Patent oriented Research) and objectives of research, phases of research. Research Design: Review of Research Literature: Purpose and use of literature review, locating relevant information, use of library & electronic databases, preparation & presentation of literature review, research article reviews, theoretical models and frame work. Identification of gaps in research, formulation of research problem, definition of research objectives. Documentation: a. “How” of documentation b. Techniques of documentation c. Importance of documentation d. Use of computer packages in documentation

Research Publication: Thesis, Research paper, Review Article & Technical Reports: Organization of thesis and reports, formatting issues, citation methods, references, effective oral presentation of research. Quality indices of research publication: impact factor, immediacy factor, H- index and other citation indices Presentation (especially for oral presentation): Importance and types of different skills, contained, format of model, introduction, Poster, Gestures, eye contact, facial, expressions, stage fright, volume of pitch, speed, pause & language, Visual aids & seating, Questionnaire etc. Cost analysis of the project: cost incurred on raw materials, Procedure, instrumentations and clinical trials. Sources for procurement of research grants: International agencies, government and private bodies.

Industrial-institution interaction: Industrial projects, their feasibility reports, interaction with industries.

Research Ethics and Morals: Issues related to plagiarism, collaborative models and ethics, acknowledgements. Intellectual Property Rights: copy rights, copy left: patents, Industrial designs, Trademarks.

Reference Books: 1. Research Methodology, Methods & Techniques, C. R. Kothari, Vishwa 2.

Prakashan

Research Methods- A Process of Inquiry, Graziano, A.M., Raulin, M.L, Pearson Publications.

3. How to Write a Thesis:, Murray, R. Tata McGraw Hill

4. Writing For Academic Journals, Murray, R., McGraw Hill International. 5. Writing for Publication, Henson, K.T., Allyn &Bacon.

6. Research Methodology by Bhattacharyya Excel Books 2nd Edition.

7. What is this thing called Science, Chalmers, A.F.,Queensland University Press. 8. Methods 9.

&Techniques

Himalaya publications.

of Social

Research,

Bhandarkar

&

Wilkinson,

Doing your Research project, Bell J., Open University Press, Berkshire.

10. A Handbook of Academic Writing, Murray, R. and Moore, S., Tata McGraw Hill International.

11. Business Research Methods Donald R. Cooper and Pamela S.Schindler Business Research Methods Tata McGraw Hill Publishing Company Ltd

12. Research Methodology: A Guide for Researchers in Management and Social Sciences Taylor, Sinha & Ghoshal

Course Title

Finite Element Method Detailed syllabus

Introduction: Principles of discretization, Element stiffness mass formulation based on direct, variational and weighted residual techniques.

Finite element displacement approach: Shape functions & numerical integrations, convergence criteria, Computation of element properties using generalized coordinates & natural co-ordinates.

Analysis of Structures – 2D and 3D truss elements, beam elements. Analysis of plane stress/strain and axisymmetric solids. Triangular, Quadrilateral and isoperimetric elements. Analysis of plate bending and shells. Analysis of Thermal and fluid flow Problems and application.

Dynamic analysis: Free vibration analysis of truss bars with two D.O.F.considering lumped mass and consistent mass formulations. Flexural vibration of beam elements Pre- processors for FEA modeling. FEA software packages and Applications. Reference Books: 1. Finite Elements Procedures in Engineering analysis - Bathe, Wilson 2. Finite Element for Structural Analysis - Weaver & Johnston 3. The Finite Element Methods - Zienkiewicz

4. Introduction to Finite Elements in Engineering - Chandrupatla, R.T. &Belegundu, A.D

5. Finite Element Programming - Hinton & Owen 6. Finite Elements Methods - C.S.Krishnamurt

Course Title

Hydrological Modeling Detailed syllabus

General: Definitions of Modeling ,Uses and Role of Modeling in water resources management, Process of Hydrological Modeling, Advantage of Models, Basic Rules or Principles of Modeling, Sensitivity analysis, Modeling Protocol, Calibration and Validation. Nash-Sutcliffe model efficiency coefficient, Calculations of Co-efficient of determination R2 and Nash-Sutcliffe Ratio from Rainfall, Runoff and Simulated Runoff Data. Mathematics models Types of Mathematics models such as analytical model, Deterministic model, Dynamic model, Empirical model. Application of Mathematic Model

Hydrologic Simulation Models Classification of Hydrologic Simulation Models Components of hydrologic Simulation Models, HEC-HMS Hydrologic Modeling System Optimization Models in Hydrology, Single-Event Rainfall Runoff Models Storm-Water Management Model Watershed Simulation Models, ARCSWAT Ground Water Analog Models MODFLOW, Its simulation and Packages of MODFLOW Tank Model: Definition, Basic Structure of Tank Model, Important terms for tank models, Consideration or Assumption in Tank Model, working and advantages of Tank Model SWAT Development of SWAT, Overview of SWAT, Land Phase of the Hydrological Cycle, HRU’s and its role in modeling Reference Books: 1. GIS and environmental modeling by Keith C. Clarke, Bradley O. Parks,Michael P.Crane -PHI

2. Integrated Watershed Management through Simulation Modeling by Lodha P P andGosain A K – Lambert Academic Publishing

3. Introduction to Hydrology by Warren Viessman, Jr and Gary L Lewis – Pearsoneducation

4. Haan, C. T. q (Charles Thomas)Statistical methods in hydrology2. ed. : Ames, Iowa : Iowa State Press,

5. Nix, S.J.. Urban Stormwater Modeling and Simulations. Boca Raton: CRC Press

Course Title

Soil Stabilization and Soil Improvement Techniques Detailed syllabus

Classification of stabilizing agents and stabilization processes, nature and surface characteristics of soil particles, concepts of surface area and contact points.

Drainage and compaction principles of mechanical stabilization, inorganic stabilizing agents and their characteristics - lime, cement, lime-flyash, hydroxides, carbonates etc., inorganic stabilizers, reaction mechanism in relation to strength improvement, characteristics under various conditions of soil properties, time, temperature and

Deleterious effects of organic substance and sulphates on inorganic stabilization, organic stabilizers, binding and water-proofing agents-bituminous materials, lignings, large organic cations, aniline furferols, resins, rosins and derivatives and other organic wastes, bituminous stabilization, electrical and thermal stabilization. Types of Soil Structure – Clay Minerals – Characteristics and Construction of mineral groups – soil water Definitions – Principles – Objectives – Field compaction methods – suitability of field compaction methods – field compaction controls – methods

Weak Deposits- Identification-Problems associated with weak deposits- Mitchel chart of applicability of treatment methods Insitu compaction of cohesion less soil – Injection and grouting – stabilization of soils – Preloading and sand drains , Prefabricated vertical drain Vibroflotation - Stone column – Encased stone column ,Stone column design – strengthening of subsoil by stone column installation Earth reinforcement , Geosynthesics , Mechanically stabilized earth wall , Anchor. Reference Books:

1. Proceedings of the Conference on Soil Stabilization, Massachusetts Institute of Technology, June 18-30, 1959. 2. K.B. Woods, D.S. Berry and W.H. Goetz, Highway EngineeringHandbook, 1960. 3. A.C. Houlsby, Grouting Manual, Water Resources Commission, Australia-1977. 4. R.H. Karol, Chemical Grouting, Applied Science Publishers-1986. 5. Shroff & D. Shah, Grouting technology for dam construction and tunneling, Oxford & IBH Publishers, 2nd addition, 1999. 6. Koerner R M,“Construction & Geotechnical Methods in Foundation Engineering”, McGraw Hill Publishing Co. Ltd., 1984 7. Haussmann M.R. ‘Engineering Principles of Ground Modification’ McGraw Hill Publishing Company, New York - 1990. 8. Zeevart L, “Foundation Engineering for Difficult Subsoil Conditions” 9. Bell F G, “Foundation Engineering in Difficult Ground”, Butterworth, 1978. 10. Harr M E, “Ground Water & Seepage” 11. Van Impe W.F, ”Soil Improvement technique and their evaluation“ 12. Rao V.V S, “Ground Improvement techniques“

Course Title

Structural Dynamics & Earthquake Engineering Detailed syllabus

Structural Dynamics: Response of SDOF to harmonic and general dynamic loading, Vibration of multiple degree of freedom systems, numerical techniques for finding natural frequencies & mode shapes, orthogonality relationship of principal modes, Rayleigh's & Dunkerley’s principle, Evaluation of dynamic response by mode superposition method, Analysis by response spectrum theory andtime history analysis.

Earthquake Engineering: Causes of earthquake and their characteristic, earthquake parameters, seismic zoning of India, Lessons from past earthquake and remedial measures, Response spectra & Combined D-V-A plot; Introduction to IS Codal provisions on Earthquake Engineering; Performance of Building: Behaviour of various types of building s in past earthquakes, Modes of Failure, influence of non-symmetry, infill walls, foundation, soft – storey and detailing of reinforcement in buildings; Design Spectrum, Elastic and Inelastic Response Spectrum and analysis. Philosophy of earthquake resistant design: Design philosophy, Ductility, Redundancy and Over strength, Damping, Centers of mass and stiffness, Reduction Factor and Lateral Force Distribution; Behavior of floor diaphragms, effect of various structural irregularities, lateral force analysis of building - Torsionally uncoupled and coupled system

Capacity design of various structural elements: various lateral load resisting structural systems – MR frame with shear wall & bracing, Provisions of IS 1893 & IS 13920

Structural controls: Passive Controls – Base isolation, various dampers, Active controls Liquefaction: Causes, remedial measures.

Response of non-structural components & structural considerations

Modelling and response of structure to earthquake , dynamic analysis of high-rise buildings, structural system for low, medium and high rise building, water tank and bridges using professional software like STAAD, SAP, ETAB, MIDAS, ANSYS etc Pushover Analysis and Time History Analysis: Safety analysis of existing building and strengthening if and where required. Shear walls:

Lateral load participation, analysis and design of shear walls with/ without boundary elements, openings and coupling beams.

Reference Books: 1. Dynamics of Structures - A.K.Chopra

2. Structural Vibrations - Theory and Computation - Mario Paz

3. Earthquake Resistant Design - Manish Shrikhande &Pankaj Agrawal

4. Vibrations of Structures Application in civil Engg - J.W.Smith 5. Design Structural Dynamics - Clough & Penzien

6. Introduction to Structural Dynamics - John M.Biggs

7. Dynamics and Vibration of Structures - Demeter G.Fertis

8. Elements of earthquake engineering - Jaikrishna & Chandrasekaran

9. Paulay T and Priestley, M.J.N.,“Seismic Design of Reinforced Concrete and Masonry Buildings ”, John Wiley, 3/e/1995

10. Wakabayshi M, “ Design of E. Q. Resistant Building”, MaGraw Hill,

2/e/1986

11. Sharma Hemant Kumar and Agrawal G, “ E. Q. Resistant Building Constructin”, ABD Publishers, Jaipur.

12. Dr. Arya AS et all, “ Guidelines for E.Q. Resistant Non-engineered Construction”, IAEE Committee, 1/e/1986

13. Joshi DS et al, “ Design of RC Structures for E.Q. Resistant”, Indian Society of Structural Engineers, 2/e/2001

14. Different IS Codes viz. IS: 4326-1993, IS: 13827-1933, IS: 13828-1993 & IS: 13935-1993, IS: 13920-1993, IS: 1893-2002

Course Title

Pavement Design, Analysis and Evaluation Detailed syllabus

Principles of Pavement Design: Types of Pavements. Concept of pavement performance. Structural and Functional failures of pavements. Different types of pavement performance criteria. Different pavement design approaches. General framework for pavement design.

Traffic Considerations in Pavement Design: Vehicle types. Axle configurations. Contact shapes and contact stress distributions. Concept of standard axle load. Vehicle damage factor. Axle load surveys. Lateral placement characteristics of wheels. Estimation of design traffic.

Pavement Material Characterization: Identification of different material inputs required for analysis and design of pavements. Selection of appropriate conditions (temperature, moisture content, loading time, etc) for characterizing pavement materials. Brief description of the principles of different laboratory and field methods adopted for characterizing pavement materials. Analysis of Flexible Pavements: Selection of appropriate theoretical models for analysis of flexible and concrete pavements. Analysis of different layered flexible pavement systems using linear elastic layered theory. Analysis of concrete pavements using the Westergaard approach. Discussion of the need for use of advanced analytical techniques for flexible pavements. Discussion of different software packages available for analysis of flexible pavements.

Flexible Pavement Design Methods: Detailed discussion of different methods of design of flexible pavements. Indian Roads Congress guidelines. IRC:37, American Association of State High and Transport Officials (AASHTO) – 1993 method, TRRL Design method. Brief discussion of salient features of the AASHTO 2002 draft design guidelines for flexible pavements. Comparison of design concepts adopted in different approaches. Analysis of Concrete Pavements: Discussion of different theoretical models for analysis of different types of concrete pavements. Analysis of wheel load stresses, curling/warping stresses due to temperature differential. Critical stress combinations. Discussion of the need for use of advanced analytical techniques for concrete pavements. Discussion of different software packages available for analysis of concrete pavements.

Concrete Pavement Design Methods: Detailed discussion of different methods of design of concrete pavements. Indian Roads Congress guidelines. IRC:58, American Association of State High and Transport Officials (AASHTO) – 1993 method. PCA method. Concept of Continuously Reinforced Concrete Pavement. Brief discussion of salient features of the AASHTO 2002 draft design guidelines for concrete pavements. Comparison of design concepts adopted in different approaches

Pavement Evaluation Techniques: Functional and Structural Evaluation of pavements. Concept of roughness, International Roughness Index. measurement of Roughness using different types of equipment. Structural evaluation of in-service pavements using Benkelman beam and Falling Weight Deflect meter methods. Pavement Overlay Design Methods: Overlay design as per Indian Roads Congress guidelines (IRC:81). Overlay design as per AASHTO-1993 guidelines. Reference Books: 1. Khanna S.K. and Justo C.E.G., “Highway Engineering”, Nem Chand & Bros. 2. Yoder, E.J., “Principles of Pavement Design”, John Wiley and Sons, USA 3. NPTELhttp://nptel.iitm.ac.in Civil Engineering

4. Additional Reading:1.IRC Codes: IRC-37,IRC-58, IRCSP-72 & IRC:SP-20,IRC- 81.

Course Title

Basic Concepts Of Structural Behavior Detailed syllabus

Structures and Overview: Classification, Basic issues in analysis and design of structures. Types and selection of suitable structural system. Principles Of Mechanics: Revision of internal forces and moments. Mechanical properties of building materials.

Introduction to Structural Analysis and Design criteria of structural Elements: like truss, Cable, arch, Beam, Column and Shell. Introduction to plate and grid structures Reference Books: 1) “Structures” Daniel L. Schodek

Course Title

Urban and Regional Transportation Planning Detailed syllabus

1. Introduction to transportation systems planning, various modes of transportation and comparisons, urban and regional transportation planning for passengers and goods, use and evaluation of various models. 2. Planning methodologies, modeling techniques in planning, problem solving techniques

3. Travel demand modeling: Trip generation, trip distribution, modal split analysis, trip assignment techniques, and various models, Land use planning models and their suitability. Transportation impact study Methodologies.

4. Urban Mass Transit Planning & Modelling: Types of transit systems, public, private, para-transit transport, mass and rapid transit systems, coordination, types of coordination. Transit network design, classification of routes, prediction of transit usage, evaluation of network, scheduling principles & methodology, urban freight transportation: freight demand, spatial distribution of goods, truck terminal planning

5. Regional Transportation Development - Delineation of Planning Regions: Concept of region and space – types of regions, rural road network development approach, regional freight transportation- issues & approach, demand assessment, various models. Reference Books:

1.

Hutchinson, B.G., Principles of Urban Transportation System Planning, Mc-Graw Hill 1974. 2. Oppenheim, N., Applied Models in Urban and Regional Analysis, Prentice-Hall, NJ. 3. Khisty C J., Lall B.Kent, Transportation Engineering – An Introduction, PrenticeHall, NJ, 2005 4. Chand Mahesh, Puri U. K., Regional in India, Allied Publishers, New Delhi, 1983. 5. Glassion John, Introduction to regional planning, Hutchinson and MIT Press, Cambridge, 1996. 6. Ortuzar J. D., Willumsen L.G., Modeling Transport, John Wiley & Sons, 1994 7. Vukan R. Vuchic, Urban Transit : Operations, Planning and Economics, Wiley Sons Publishers. 8. Edward K.Morlok, Transportation Engg. and Planning 9. W.Dickey, Metropolitan Transportation Planning Tata McGraw-Hill, New Delhi, 1975 10. Blunder and Black, Land useTtransportation System 11. Kadiyali L.R., Traffic Engineering and Transport Planning, Khanna Publishers 12. Khisty, C J., Transportation Engineering – An Introduction, Prentice-Hall, NJ 14. S.C. Saxena, Traffic Planning and Design, Dhanpat Rai Pub., New Delhi. 15. Partha Chakraborty and Animesh Das, Principles of Transportation Engineering, PHI 16. C. S. Papacostas, Fundamentals of Transportation System Analysis, PHI. 17. James H. Banks, Introduction to Transportation Engineering, WCB-McGrawHill, New York

Course Title

Environment Impact Assessment and Audit Detailed syllabus

Introduction: Environmental Assessment process, objectives of EIA, Terminology, Hierarchy in EIA, Historical Review of EIA, Concepts related to EIA, Basic data collection for EIA.

Legislation and Procedures: National Environmental Policy Act and Implementation, EIA legislative requirements and administrative procedures in India/Indian States, EIA notification 2006 Techniques and Methodology: Description of the environmental setting, OWL Methods of Impact Analysis, Environmental risk assessment, baseline data collection for EIA. Public Participation in environmental decision making, regulatory requirement, techniques, advantages and disadvantages of public participation. PREPARATION MODULES :EIA

Prediction and Assessment of Impacts on Air, Water, Noise, Biological, Cultural and socio-economic Environment, Mining, blasting.

Case studies of EIA for Industries like Oil, Petrochemical, iron and steel, fertilizer, sugar and distillery, projects of road/dams and housing etc.

Environment Management Plan: Planning, selection of appropriate procedures, Introduction to Environmental budget, to minimize environmental Impacts. Environmental Audit: Definition of Environment Audit and its importance for industries. Types of audits, General audit methodology and basic structure of audit. Elements of an audit process and its importance. Concept of ISO 14000. Requirements of Rule 14 for Environmental Audit under Environmental protection Act 1986, Definitions of (a). Signatory, b. Consumption Audit, (c). Pollution audit, (d). Hazardous audit, (e). Solid waste audit, (f.) Disposal audit, (g.) Cost audit, (h.) Investment audit, (i.) Voluntary. Reference Books:

1. Larry W. Canter," Environment Impact Assessment", McGraw-Hill Book Company, New York 2. G.J. Rau and CD. Weeten, "Environmental Impact Analysis Hand book, McGraw Hill, 1980. 3. Vijay Kulkarni and T V Ramchandra. "Environmental management" Capital Publishing Co 4. Mhaskar A.K., "Environmental Audit" Enviro Media Publications. 5. S.K. Dhameja, "Environmental Engineering and Management" S.K. Kalaria and Sons Publishers.

Course Title

Concrete Technology Detailed syllabus

1) Ingredients of concrete:Cement, coarse aggregate, fine aggregate, water, manufacturing of Portland cement wet and dry process, hydration of cement, transition zone, types of cement.

2) Aggregate and testing of aggregate:classification of aggregate, properties of aggregate like size, shape, texture, strength, aggregate impact value, aggregate abrasion value, devel attrition value, dory abrasion test, losangele’s test, specific gravity, moisture content. Alkali aggregate reaction, grading of aggregate, flakiness index, elongation index, test for determining of clay, fine silt, and fine dust, test for specific gravity. 3) Fresh concrete:-

Workability, slump flow test, compaction factor, flow tube test, segregation, bleeding, setting time of concrete, process of manufacturing of concrete ( batching, mixing, transporting, pumps and pipeline placing of concrete), curing of concrete, ready mix concrete, water cement ratio, gel/space ratio.

4) Hardened concrete:Compression test of concrete, effect of height to diameter ratio on strength, compression between cube and cylinder strength, tensile strength of concrete, factor influencing the strength result, non destructive testing methods (Schmidt’s rebound hammer, rebound number and strength of concrete, pullout test, pulse velocity method), determination of cement content. 5) Concrete mix design:Concept of mix design, various methods of proportioning, calculation of standard deviation and co-efficient of variation, American concrete institute method of mix design, DOE method of concrete mix design, Indian standard concrete mix proportioning, mix design using fly ash as per IS 10262 : 2009. 6) Self compacting concrete:-

Self compacting concrete, requirements of Self compacting concrete, initial mix composition, production and placing, mix design, test methods ( slump flow test, T50 slump flow test, J-ring test, fill box test, Orimet test, interpretation of result).

7) Elasticity creep and shrinkage :Elastic properties of concrete, relation between modulus of elasticity and strength, factors affecting modulus of elasticity, poisson’s ration, measurement of creep, factors affecting creep, effect of creep, plastic shrinkage, drying shrinkage, factors affecting shrinkage, moisture movement, thermal shrinkage 8) Durability of concrete :-

Strength and durability relationship, volume change in concrete, definition of durability, impact of w/c ration on durability, permeability, factors contributing to cracks in the concrete, alkali aggregate reaction, carbonation, chloride attack, sulphate attack, water penetration test.

Reference Books: 1. Concrete Technology, Mr. M. S. Shetty

2. Concrete Technology, Neville and Brooks

3. Advana Concrete technology – John Brian Newman, B.S. Choo 4. Advana Concrete technology – 1 Newman & choo 5. Concrete technology – M. L. Gambhir

Smile Life

When life gives you a hundred reasons to cry, show life that you have a thousand reasons to smile

Get in touch

© Copyright 2015 - 2024 PDFFOX.COM - All rights reserved.