DHANESH DAS portfolio A concise selection of the works in Scaffolding and Formwork engineering
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CONTENTS 1. Selected works for design review & auditing 2. Project 1: Ocean Heights by Arabtec Dubai, UAE. 3. Project 2: Continental Tower by Kaveri General Contracting, Dubai, UAE. 4. Project 3: Viaduct shoring failure, KVMRT SSP Line, Kuala Lumpur, Malaysia. 5. Other Skills & Hobbies 6. Profile Overview 3
DESIGN REVIEW & AUDITING: SELECTED WORKS KVMRT LINE 2 ELEVATED & UG 4 Hanging scaffold to access the station box excavationHangingscaffold to access the Escape Shaft excavations
5 Poorly constructed Scaffolding at the site ( SWO issued by TWD )
6 Hanging scaffold to access the station box Accessexcavationscaffolds for bridge decks and pier heads
7 Scaffold access for Pier head formwork
8 Scaffold access for Pier Façadeformworkscaffold for multi storey building supported on cantilever platform
OCEAN HEIGHTS Dubai Marina, UAE 2010 SYSTEM DESCRIPTION Typical slab Custom made Multiflex Tables with TK head Walls & Columns CBVARIO,240 self climbing system PERI internal shaft platforms Ocean Heights is a super tall residential skyscraper in Dubai Marina, Dubai, UAE The tower stands 310 m tall with 83 floors The building was completed in 2010 Currently, Ocean Heights is the fifth tallest residential building in the world and the fourth tallest residential building in Dubai The tower has unique curves and twisting motion as one ascends PERI Dubai was chosen by Arabtec Constructions to provide formwork solutions for the RC elements like slabs, columns, lift walls and shear walls 9
10 BEAM & SLAB FORMWORK FOR 7TH TO 11TH FLOOR LEVEL PLAN & SECTION SLAB TABLE & MULTIFLEX FOR TYP. FLOOR SLAB
CONTINENTAL TOWER Marina, Dubai, UAE 2011 to 2017 11 Typical slab Multiflex Tables with TK head Walls & Columns CBVARIO,240 self climbing system PERI internal shaft platforms Continental Tower is a 30 storey mixed use building in Dubai Marina, Dubai The development contains a total of 250 units Construction began in 2011 and was completed by 2017 The project was developed by Continental Investments and the main contractor was Kaveri General Contracting Company LLC PERI Dubai was chosen by Kaveri General Contracting Company LLC to provide formwork solutions for the RC elements like slab, columns, lift walls and shear walls in the year 2010 2011 SYSTEM DESCRIPTION
12 SLAB TABLE & MULTIFLEX FOR TYP. SLAB
13 CB240 EXTERNAL CLIMBING SYSTEM INTERNAL SHAFT PLATFORM & VARIO WALL FOR LIFT WALLS PLAN VIEW CORE WALL(2) WALL FORMWORK ARRANGEMENT SECTION A PLAN VIEW CORE WALL(2) CLIMBING PLATFORM ARRANGEMENT
Project : PROJECT MASS RAPID TRANSIT (KVMRT Line 2) LEMBAH-JAJARAN SERDANG-SUNGAI BULOH-PUTRAJAYA Kuala Lumpur, Malaysia. Work Package (WP) : W10 Elevated WP Location : LONG SPAN CROSSING V204A (P13) Date of Incident : Sunday, 21st September 2019 Main Contractor : MMC GAMUDA KVMRT (PDP) SSP SDN BHD Work Package Contractor : WCT Berhad Specialist contractor : Giga Tegasan Sd. Bhd. Formwork Supplier : SGB Brandsafway INCIDENT DESCRIPTION On Sunday 21st, September 2019 evening the Falsework supporting the Segment Box Girders (SBG) E17A, E18A & ED at P13 had failed to cause the SBGs to slip from the hydraulic jack. It was understood that at the time of this failure, the three SBGs were stitched together and its levelling & aligning were ongoing. INVESTIGATION ON VIADUCT SHORING FAILURE Kuala Lumpur, Malaysia 2020 14 DETAILS HIDDEN
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• The use of 5Ton jacks for the horizontal alignment of SBG will develop horizontal reaction forces with magnitudes that exceed the design horizontal load of falsework
2. The Design Brief should be checked and verified by the TWC before issuing it to the Designer
1. For complex temporary works activities, a design coordination meeting should be arranged between various parties (Contractor’s operation team & Designer) involved to discuss the work sequences, load criteria, erection & dismantling of temporary work structures etc Thereafter, the design requirement should be captured in a Design Brief by the contractor and should be issued to the Designer
• The crew involved in the end span construction were inexperienced and not adequately trained
SUMMARY OF CONTRIBUTORY FACTORS
4. Erection & dismantling of Temporary work structures should only be performed by fully trained/competent persons
• The primary beams, secondary beams and layer 1 beams were loosely laid without any connections between them Layer 1 steel UB sections directly beneath the SBGs were not designed to cater eccentric loading However, during the horizontal shifting of SBGs using the 5T baby jacks, the 50T hydraulic jacks meant for vertical alignment will slide over the greased shim plates leading to eccentric loading on layer 1 steel UB sections Hence, in the event of eccentric loading, the steel UB sections could have overturned triggering the failure
Multiple concerns discussed below were observed which could have actively or passively triggered the failure;
3. Any changes from the original design that the operation team intends to make which was not originally captured in the approved MS or Design Brief should be informed to the Designer, PE & ICE
RECOMMENDATIONS
5. The methodology of the work should be captured in a drawing whether sequencing and loading limits are specified This document should be subject to ICE checking and approval 17
• Vertical alignment of SBGs on 50T jacks if not done properly can cause overloading of jacks due to the intermediate jacks getting redundant This could lead to local failure of falsework standards or head jacks
SKILLS & HOBBIES TRAINER Provided training and conducted TWs forums to the TWCs with the aim of developing and improving their competency level in TWs management This training was extended to the CMs, PMs, QA/QC, SHE, SUBCONs, etc for awareness in TWs 18 (Pictures from the various forums & training sessions in temporary works )
19 MODEL MAKING Understanding Shukov’s Tower or hyperboloid Experiment with Tensegrity structure TEMPORARYWORKS GEOTECH SURVEYQA/QCSHETEAMSITE CICE & SC BIM TEAM LIAISE WITH MULTI DISCIPLINARY DEPARTMENTS PLANNING CONTRACTSSUB CONS CONSULTANTSDESIGN
20 FINE PHOTOGRAPHYARTSOld city view Prague, Czech Republic. Landscape: Water Colour Portrait: Charcoal pellet Night view at the Gardens by the Bay, Singapore.
A self motivated Formwork Specialist with experience in the design, management & coordination of formwork, falsework, scaffolding, and other Temporary Works structures Over this period of my tenure, I have achieved extensive knowledge in the core principles of formwork technology and the technical know how of proprietary formwork systems of various companies like PERI DOKA, SGB, HUNNEBECK, RMD Kwikform, etc I have good exposure to various codes and standards involved in the formwork & scaffolding design, temporary works management, and HSE Also, I have a proven track record in leading, managing, and mentoring a team of young and experienced engineers Profile overview DHANESH DAS THOPPIL Formwork Specialist 21 EXPOSURE IN CODES & REGULATIONS BS 5975: 2008+A1:2011 Temporary works procedures and falsework design BS EN 12812:2004 Falsework design DIN 4421 Falsework design BS EN 12811 ( 1/2/3 ) Scaffolds / Information on materials / Load testing TG20:08 (V1 & V2) Guidance on scaffolding with tubes & fittings BS 5950 1:200 Steel design BS 8118 1:1997 Concrete design CIRIA 108 Concrete pressure on wall formwork DIN 18218 Concrete pressure on wall formwork BS 8539:2012 Post installed anchors in concrete BOOKS Formwork a guide to good practice (3rd Edition) ABOUT ME
EDUCATIONSOFTWARESKILLS Drafting & Modelling AutoCAD 2D & 3D Basic: MS Offi OTHER ATTRIBUTES o BIM
o TWf:
MMC GAMUDA KVMRT (T) Sr. Temporary Works Engineer
o CITB:
Technical Solutions Design Engineer (Asst. Manager D&T) 2006 Bachelor’s Degree (4 year course) in Civil Engineering from the University of Calicut, India. certification: BIM Level 2 Essentials (ISO 19650) completed from ‘bre ACADAMY Hands on training in ‘Scaffolding erection and its safety aspects’ by the invited delegates from CITB UK at KL, Malaysia. Temporary Works awareness training from Temporary Works Forum 22 Calicut, India (Back office to PERI Dubai.)
HARSCO India Pvt. Ltd. Sr. Design Engineer Hyderabad, India. (Team Leader)
GHI FORMWORKS Design Team Leader Dubai, UAE PERI LLC. Design Engineer Dubai, UAE
Cape East WLL. Planning & QS Engineer Scaffolding Doha, FORESHOREQatar.
PROFESSIONAL EXPERIENCE 2002
Kuala Lumpur, Malaysia
