STRUCTURAL DESIGN AND BIM PORTFOLIO M.NARESH KUMAR This portfolio contains selected works from my DESIGN AND BIM works Projects involved throughout the period of professional & academic carrier
About Me Professional Summary Experience in Metro Rail Structural design of in RCC structures both elevated stations, Elevated via-duct and station skywalks, Steel structures like station steel roof and link bridge, 3D Structural /Architectural Building information Modeling , 4D Model based scheduling and Design co ordination. Education and Professional status BACHELOR OF ENGINEERING in Civil Engineering, R.M.K Engineering College, 2011 percentage of marks 84.2% university 24th rank over the Anna University. Software Skills Possessing good computer skills and proficient in using AutoCAD, MS-Excel, MSWord, MS-Power point, STAAD Pro, MS project, Revit architecture, Revit Structure, Navis work, Google sketch up and Plaxis 2d. Exposure to BIS, IRC, IRS standards. Experience MOTT MACDONALD GROUP|06/2012-present Junior Design Engineer – Civil / Structural and BIM (Revit) Modeler CCCL, CHENNAI| 06/2011 –06/2012 Graduate Engineer Trainee-Design co-ordination, Quantity take off SRINSOFT TECHNOLOGIES, CHENNAI| 12/2010–06/ 2011-Part Time Building information modeler and consulting engineer to programmers
Patents Precast Segments for elevated transit rail station-Indian patent pending 4992/CHE/2014-Inventing specially shaped precast segments for elevated transit rail construction by using launching girders. Station boring machine for underground transit rail station-Indian patent pending 4993/CHE/2014-Inventing a boring machine for the construction of underground transit rail station in-between the launching shafts Language English : Spoken – good; written – good; reading – good Tamil : Spoken – good; written – good; reading – good Telugu : Spoken – good Email:ucenareshkumar@yahoo.com, Mobile No: 9940357947, No.16/9, Francis Turin Street, Seven Wells, Chennai- 600 001, Tamil Nadu, India. LinkedIn Profile: https://www.linkedin.com/pub/nareshkumar/7a/2a/506
Works during the period of Mott Macdonald Cantilever Link Bridge Design And BIM Vadapalani elevated station|project: CMRL Architectural BIM Works on Chennai Metro elevated stations Structural BIM Works on Hyderabad Metro elevated stations Parametric Modelling in Revit Skywalk Design Elevated station|project: CMRL Entry structure and Staircase Enclosure Design Common to all elevated station|project: CMRL Ashok Nagar Property Development area proposal Ashok Nagar elevated station|project: CMRL Concept Preparation of Long Span Elevated Station Roof Project:CMRL Works during the period of CCCL Conceptual Bio-mimicry elevation design proposals Project:CMRL 3D- Visualization of Adyar river Airport Bridge Works during the period of Srinsoft Technologies Modular Housing Project: Panelit Residential housing BIM Work Works done during the academic period of Bachelor degree Conceptual airport terminal shell modeling Eco-Mansion project
Cantilever Link Bridge Design and BIM Modeling Vadapalani elevated station|project: CMRL
The cantilever structure has been initially proposed as a Reinforced concrete structure in tender designs. But the structure is at a level of 25.0m from the existing ground level, which lead to difficulties in constructing it over a live traffic road and quality of construction at site. Hence it was decided to change the type of structure to structural steel to increase the feasibility of construction by prefabricating it and erect at night time
Structural configuration
Due to the limited footprint and two level viaduct system of flyover below & metro above, The Vadapalani elevated station required a cantilever link bridge with 12.0m cantilever at an elevation of 25.0m from existing ground level to make connection to platform from the fire escape stairs. The width of the structure was 5.0m. Old tender design in RCC New design with steel space truss The whole cantilever truss was covered as a space frame with full strength member connections. The profile of the structure was worked out to take care of the rain water entry. Hand rails were proposed on the floor slabs. Floor slabs are proposed insitu concrete placed on a profile decking sheet.
The bridge portion is analysed and designed using Staad Pro as per IS800-1984. Dead loads, super imposed dead load, live loads, wind load [IS 875 Part-3] are considered in the analysis. The self weight, SIDL, Live load and wind load has been applied as the Floor load to the truss for the analysis. Structure has been analysed and designed as per Indian Standard IS 800-2007 for Dead load, Super Imposed dead load, Live load & Wind load and the whole structure has been checked for its natural frequency, which was 5.8Hz which is greater of the limit 5.0Hz ,as per IS 800-2007 (design against floor vibration). Since the structure is of cantilever type, the deflection at the tip of cantilever was coming 68mm which was greater than codal limit, hence a strut member is introduced to reduce the cantilever length and this helped to reduce the deflection from 68mm to 36mm, which was within in the codal limit Static loads like Dead load ,Super imposed loads and live load applied as uniform distributed load on floor cross beams ,other parapet loads are applied on longitudinal beams which connects with floor beams and roof sheeting, other fixture loads are applied as nodal loads on top of roof member junctions as depicted in fig
Dynamic loads like Wind load applied in both Longitudinal and transverse direction in Staad Model as nodal load.
3D BIM Models Design model exported from staad pro to Navis work as CIS/2 for cross checking with BIM model which have created in revit platform.
Architectural BIM Works on Chennai Metro elevated stations-EAS 04 Contract
Interior Views
Some of Architectural building information works done for Chennai metro elevated rail stations under EAS-04 contract stations like CMBT, Koyembedu and Ashok Nagar.Creating models from the earlier design stage level and updating as per design modification, generating Interior views with actual tender materials for Floor tiling, Wall patterns and light fixtures approved by client to generate more realistic material for Unpaid and paid Areas of inside stations
Architectural BIM Works on Chennai Metro elevated stations-EAS 05 Contract
Some of Architectural building information works done for Chennai metro elevated rail stations under EAS-05 contract stations like SIDCO, Little Mount .creating models from the earlier design stage level and updating as per design modification. All the rendered images are presented during definitive design stage
Structural BIM Works on Hyderabad Metro elevated stations Involved in Structural /Architectural Building information modelling of Punjagutta, Amerpet elevated stations for Hyderabad metro rail project, Creation of library files called as family files in revit for elevated Via duct super structure and Substructure like parametric families for I-Girders, Box Girders, Rail Plinth parapet walls, Chamfered Pier, Pier cap and Pile foundation. Exporting created file to Naviswork for clash detection with all the discipline models, integrating MS project construction schedule with BIM Model for 4D BIM scheduling. Generating BOQ schedules, Rendering both using artificial lighting and natural, creating walk-through and creation of 3D pdf files to clients.
Initial Concept PreparationAmerpet station
Structural BIM model-Amerpet station
Structural BIM modelPunjagutta Station
3d-PDF file Creation that anyone can view and use to drive engineering processes like easily evaluate the model, Pick the elements an view the properties(Area, Perimeter, Dimension and Volume)
3D sectional of Structural frame of Punjagutta Station from Revit structure
3D sectional of Structural frame of Amerpet Station from Revit structure
Parametric Modelling in Revit
Skywalk Design Elevated station|project: CMRL Assigned to the work of conceptual work for skywalks at Chennai Metro rail elevated stations under the contract EAS-04 and EAS-05.
Proposed for Koyambedu Metro station skywalk spanning Over National highway where the maximum span unsupported length 42m and 6.5m clear walk way so its suggested to have elliptical shaped steel helical spiral tube two span continuous steel bridge.
Proposed for Ashok Nagar Metro station skywalk spanning Over National highway where the maximum span unsupported length 42m and 6.5m clear walk way so its suggested to have elliptical shaped steel helical spiral tube.
Proposed for Ashok Nagar Metro station skywalk spanning Over National highway where the maximum span unsupported length 42m and 4.5m clear walk way so its suggested to have Circular shaped steel helical spiral tube single span continuous steel bridge.
Structural Configuration Structure has been analyzed and designed as per Indian Standard IS 800-2007 for Dead load, Super Imposed dead load, Live load & Wind load and the whole structure has been checked During the design period parametric steel spiral tubes which composed of regular ring framed shaped according to size of skywalk like Elliptical and circular interconnected by introducing connecting junctions for cross truss member nodal connection at the interval 3.5m and 2.65m for elliptical ring.Cross members which visually forms the helical spiral undergoes tension and compression due to the deformation of structural rings. Each of Structural ring spaced at 3m c/c ,provided with floor beam with the structural ring where the floor decking or precast planks placed over the floor beam.
Static loads like Dead load ,Super imposed loads and live load applied as uniform distributed load on floor cross beams ,other parapet loads are applied on longitudinal beams which connects with floor beams and roof sheeting, other fixture loads are applied as nodal loads on top of roof member junctions as depicted in fig
Final Detailed Design with precast I-Girders as per Client requirement
Entry structure and Staircase Enclosure Design Common to all elevated station|project: CMRL Proposal for Entry structures in CMRL elevated stations All the structural steel members are designed as square hollow tubular sections and Rectangular hollow sections for the station entry spans (5m to 12m) width as typical entry structures. Typical Entry structure views
Proposed Entry structure St Thomas mount station for the maximum span of 24m width.
Proposal for Staircase enclosure structures in CMRL elevated stations
Proposal for Staircase enclosure structures in CMRL elevated stations
Typical Staircase Enclosure arranged for Koyambedu station
Design Constrain Since station RCC shell detailed design deliverables were almost done ,client required to change all the station RCC top roof covers to steel structure enclosure and so original structure supports were worked out for RCC option. Cumbersome process to change into steel option because of additional intermediate support requirement Solution offered:Option-1(Do not require any additional support): Providing lattice steel structure assembly of 1.2m unit module lattice assembled to match with architectural profile which utilize the supports planned original design hence by reducing column levels to align with architectural profile. Structural scheme advantage to larger span width up to 9m and its placed as skin layer over the supports and side cladding shall be adopted
Typical lattice skin layer
Unit Module of 1.2metres
Staad model of Various Skin lattice layer
Load application and Moment drawings
Option-2(Typical Tubular frames with purlins): made as final due to the lower level fabrication process and less workmanship though its consumes higher steel quantity when compare
to option-1 and since employer also accepted for additional support on station concrete beams after cross verifying with provided reinforcement.
Ashok Nagar Property Development area proposal Ashok Nagar elevated station|project: CMRL
Concept Models play a vital role in first creating a feel of the end product and further helps in detecting potential design related issues and interface complications. This can also be extended to the advanced BIM models as necessary for the project and can be a big time saving tool. It was necessary from client at Chennai Metro Rail limited to provide a quick concept presentation on the possible land developments which will fit into the Koyambedu & Ashok Nagar Metro stations premises. It posted a challenge to propose a quick artistic/ and engineering impression of the concept, to avail the sanction and approval from the higher authorities.
Approach: CAD model are drafted using AutoCAD and imported to REVIT. An appealing concept model was created and presented to Chennai Metro. Most importantly, as salient objects were modelled in the software, the block quantity estimates of architectural/structural items were also possible. Line model from the rivet can also be exported to STAAD pro design software and the preliminary analysis be done to ascertain the assumed member sizes
Concept Preparation of Long Span Elevated Station Roof Project:CMRL Lattice frame long span roof The Koyembedu elevated roof consists of main frame with space frame and the connection rafter beam as lattice beam. The span of the roof was 27.0m over a length of 143m with a bay width of 17.5m. Type of roof shape adopted for the structure was circular type in cross section, with semi-circular and elliptical two-tier system in plan. One end of the frame was supported on the portal frame done by viaduct contractor and the other end was resting on station beams. All the fixtures for OHE, Cable tray, Louvers, AEC, PIDS, and Clock were also provisioned and detailed on the mainframe, column system was proposed with circular pipes and tree lug struts from column cap plates.
Design Constraints The Koyambedu roof was initially designed by the contractor himself with entire space roof with double layer vault concept using pipe network, but the same has resulted into extensive ranges of member sizes and profile cuttings at joints of space frame and this lead to delay in construction time. Hence the ultimate employer CMRL suggested to change the type of roof structure and insisted Mott MacDonald to carry over the detailed design of the same. But during the time of this change requested, the entire substructure with the above said space frame roof load has been designed and constructed and the material procurement for the roof was over with earlier design. The OHE interface was also completed with earlier space frame configuration, hence all together it posted a high challenge to work out a light weight large span roof system using the available materials and strict complying of interface needs. It was also highly necessary to provide a modular lattice frame to perform typical unit fabrication for contractor.
Then the main construction issue was fabrication of the space roof with different types of member sizes and configurations, this issue has been first tackled by changing the roof structural type from space roof to lattice girder. As explained earlier, the older design was space frame connection with disc (approximately 2000nos.) which took more construction time. But this has been overcome by providing simple shop welded connections as shown below with bolt splices at site to erect
BIM BASED APPROACH Structural model created using STAAD Pro software has been exported via NAVIS work manage software and compared with the Architectural & MEP BIM model to check the clashes with cable trays, Foot over bridges and 3d model was developed and submitted to employer
Main frame Edge Runner beam Secondary rafter beam Purlins Long span PEB roof Preliminary Design is performed for long span PEB roof for two elevated station roof in CMRL and About the structural scheme main frame are introduced at every pierarm location and secondary rafters are supported on edge beam running in between the main frame ,over the secondary rafters purlins are placed.
Little Mount Long span PEB roof max span(20m)
Guindy Long span PEB roof max span(18m)
Conceptual Biomimicry elevation design proposals Project:CMRL
About Biomimicry Architecture Biomimicry is a branch of science that studies the imitation of nature’s functions and systems. It is a fast growing and exciting field of study that seeks to understand how to integrate living and breathing organisms into a design process. Through the application of nature into architectural design, architects can design buildings for environments that are closer to nature rather than invasive. Architects have often turned to nature for inspiration in solving design problems or confronting new design issues. They have used nature’s ideas to foster innovations in design and engineering. Some Examples
Bio-mimicry interpretation in Chennai metro rail elevated stations depicted with India's national living creatures used to create awareness of wild life sanctuaries which stays unique among all metro rails networks.
Elevation Concept Visualization For Few Elevated stations in CMRL
3D- Visualization of Adyar river Airport Bridge
Modular Housing Project: Wall framing and floor framing for Residential houses called project panelit to client rosette wall panels Customized Revit Families Created For the Project
Window Header Beam
Track beam
Intermediate Blocker
Studs
Bearing Frames
Assembled View from Modular Houses Involved as technical consulting engineer for the Revit software add-in Rosette, USA its development of API tool in Revit architecture software;
called panelit project for the client
Created Customized Revit Library Files for Cold-Rolled Floor Frame families , Wall framing Families and MEP Fixture Families as per Client specified parameters which used for CNC Code Identification and Gauge thickness; Consulting to programmers and providing logical solutions for automated framed assemblies in revit 3d modelled Modular houses ; Created framing Rules document includes Wall framing Joint details between frames L-Type,T-Type intersections,MEP Fixtures Supporting arrangement on frames.
Parametric Control on Nested Families
Sample User Interface View Showing Parameters
Door Guard Frame
Parametric Control on Nested Families
Sample User Interface View Showing Parameters
Load Bearing Frames
Residential housing BIM Work
Conceptual airport terminal shell modeling Experimental design Work:
Conceptual Airport terminal Shell Design and Modeling by introducing arch Steel spans spanning in longitudinal direction and Tetrahedron shaped steel strut supporting the entire Top roof .
About the Structural Arrangement
North End Span Frame Arch Mid Span Frame Arch
South End Span Frame Arch
Entry Structure
Tetrahedron Shaped Frames
Finger Pier Bridge
Structural Views
Architectural Form
Architectural Views
Combined Model Views in Naviswork
Eco-Mansion project Best paper award
In this house, we used some of the methods to produce electricity like using small axial flow turbine and piezoelectric flooring with specially designed suspensions and solar roof with gratzel cell which replaces the regular form P-V panels. At last radically developed solar etching panels provide an important role in energy production. As much as possible, we try to attain efficient thermal insulation by using low thermal conductivity materials like polystyrene foam concrete and aerogel glass. This house designed to make with maximum day lighting as well as natural ventilation by using rotating wind cowl. Stack effect plays an important role in the ventilation system and effective recycling done by using marketing products like slingshot water purifier, floating ball first flush system, wind boosters with herbal grids.
Ǿ 6 cm Ǿ 1 cm 7.5 cm
140 ° 1.5 cm
piezo e lec tric cr ystal
30 cm
2cm
17.5 cm
3 cm
1.5 cm
4 cm
8 cm
floor
1cm floor
(+) (-)
Micro hydro turbine water distribution systems
25c mx25c mx0.2cm
140 °
piezoelectric cry stal
Piezo-electric bamboo-flooring