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    Structural Design Basis Godrej Garden City, Ahmedabad - PHASE-9

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    setuinf
    This document provides details of the structural design basis for a high-rise residential development called Godrej Garden City in Ahmedabad, India. It includes project details, structural design codes and approaches, load assumptions, material specifications, analytical models, and responses to structural expert reviews. Key elements include towers ranging from 70 meters tall with up to 22 floors of residential units above 3 basement levels. Structural design will be carried out using ETABS and SAFE software and will consider loads like dead load, live load, seismic and wind loads. Concrete grades between M35 to M50 will be used depending on the element.

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    Structural Design Basis Godrej Garden City, Ahmedabad - PHASE-9

    Uploaded by

    setuinf
    280 views28 pages
    This document provides details of the structural design basis for a high-rise residential development called Godrej Garden City in Ahmedabad, India. It includes project details, structural design codes and approaches, load assumptions, material specifications, analytical models, and responses to structural expert reviews. Key elements include towers ranging from 70 meters tall with up to 22 floors of residential units above 3 basement levels. Structural design will be carried out using ETABS and SAFE software and will consider loads like dead load, live load, seismic and wind loads. Concrete grades between M35 to M50 will be used depending on the element.

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    HRC PPT

    Original Title

    GGC-PH-9_AMC-2020-03-12 - R1

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    This document provides details of the structural design basis for a high-rise residential development called Godrej Garden City in Ahmedabad, India. It includes project details, structural design codes and approaches, load assumptions, material specifications, analytical models, and responses to structural expert reviews. Key elements include towers ranging from 70 meters tall with up to 22 floors of residential units above 3 basement levels. Structural design will be carried out using ETABS and SAFE software and will consider loads like dead load, live load, seismic and wind loads. Concrete grades between M35 to M50 will be used depending on the element.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    280 views28 pages

    Structural Design Basis Godrej Garden City, Ahmedabad - PHASE-9

    Uploaded by

    setuinf
    This document provides details of the structural design basis for a high-rise residential development called Godrej Garden City in Ahmedabad, India. It includes project details, structural design codes and approaches, load assumptions, material specifications, analytical models, and responses to structural expert reviews. Key elements include towers ranging from 70 meters tall with up to 22 floors of residential units above 3 basement levels. Structural design will be carried out using ETABS and SAFE software and will consider loads like dead load, live load, seismic and wind loads. Concrete grades between M35 to M50 will be used depending on the element.

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    Structural Design Basis

    Godrej Garden City,


    Ahmedabad – PHASE-9

    SETU INFRASTRUCTURE
    D-701-704, 7th floor, The First, Near Keshav Baug Party Plot,
    Prahladnagar Road, Vastrapur, Judges Bunglow Road, Ahmedabad-15.
    E-mail: setuinf@gmail.com
    PART – 1 – PROJECT DETAILS
    Summary Information

    Project Name: Godrej garden City, Ahmedabad (Phase-9)

    Location: Jagatpur-Gota, Ahmedabad, Gujarat

    Developer: Shree Siddhi Infra Buildcon LLP

    Architect: Placekinessis Associates

    Principal Structural Designer:SETU INFRASTRUCTURE

    Structural Expert Reviewer: EPICONS CONSULTANTS PVT.LTD

    MEPF Consultants: DesignTech Consultants


    Project Description

    The project consists of high rise buildings 70.00m high above the Ground Level.

    • Tower-AB - Building Dimensions: 58.00m X 28.30m

    • Tower-C,D,E,O,P & Q- Building Dimensions: 79.58m X 24.22m

    • Tower-GF- Building Dimensions: 35.34m X 36.70m

    • Tower –HIJ - Building Dimensions: 62.17m X 22.64m

    • TOWER-MN & KL - Building Dimensions: 37.80M X 22.34m

    • Building Having 3 ‐ Storey Basement + 1 - Ground floor + 22 - Residential Floors + Terrace.

    • 3 - Storey Basements for Parking. Basement height is 3.6m.

    • 1st to 22th floors, Residential Units having floor height of 3.0m


    3D Render View of Buildings
    Typical Architectural Plan
    PART – 2 – STRUCTURAL DESIGN

    BY

    PRINCIPAL STRUCTURAL DESIGNER


    INDIAN STANDARD CODES
    LOADS:
    IS: 875 - 1987 (PART - 1, II, IV, V) Code of Practice for Design Loads (other than Earthquake) for Buildings and
    Structures
    IS: 875 - 2015 (PART-III) Design Loads (Other Than Earthquake) For Buildings and Structures (Wind Loads)
    IS: 1893 - 2016 (PART-I) Criteria for Earthquake Resistant Design of Structures
    IS: 16700 - 2017 Criteria for Structural Safety of Tall Concrete Buildings

    FOUNDATION:
    IS: 1080 - 1997 Code of Practice for Design and Construction of Shallow Foundations in Soils (other than
    Raft, Ring and Shell)
    IS: 1904 - 1986 Code of Practice for Design and Construction of Foundations in Soils: General Requirements
    IS: 2911 - 1997 (PART - I TO IV) Code of Practice for Design and Construction of Pile Foundations
    IS: 2950 - 1988 Code of Practice for Design and Construction of Raft Foundations ‐ Part 1: Design.
    INDIAN STANDARD CODES

    REINFORCED CEMENT CONCRETE:


    IS: 456 - 2000 Code of Practice for Plain and Reinforced Concrete
    IS: 13920 - 2016 Code of Practice for Ductile Design and Detailing of Reinforced Structures Subjected to Seismic
    ACI: 318 - M11 Building Code Requirements for Structural Concrete
    IS: 3370 - 2009 Code of Practice for Concrete Structure for The Storage of Liquids

    MATERIAL GRADES
    STRUCTURAL ELEMENT CONCRETE GRADE
    FOUNDATION M35
    RETAINING WALL M25/M30
    COLUMNS & SHEAR WALLS M50/M45/M40
    SLABS M35
    BEAMS M35
    ANALYTICAL/DESIGN APPROACH

    • A comprehensive 3‐dimensional analysis of the superstructure shall be carried out with ETABS

    software tool Non-linear version 2017.

    • For foundation depending upon geotechnical criteria, a series of combined footing and raft foundation

    shall be proposed by FEA for same shall be carried out in SAFE 2016 software tool.

    • For the design of various structural elements like foundations, columns, beams, slab etc. in ‐ house

    developed spreadsheets & Programs will be used wherever applicable.


    Typical Structural Plan
    Structural Analytical Models (Tower A, B, C & D) (Initially)

    TOWER-AB TOWER-CDE TOWER-FG TOWER-HIJ


    Meteorological Conditions

    The environmental conditions to which the structural elements


    are considered to be exposed to as per Clause 8.2.2.1 Table-3 of
    IS: 456 - 2000 are as follows:

    Moderate: Slabs, Beams & Columns/Walls


    Above Ground
    Moderate: Foundation & Structures Below
    Ground
    Fire Rating

    The fire rating considered for various structural elements are as follows,

    Retaining Walls: 2 hours


    Columns & Beams: 2 hours
    Floor Slabs: 2 hours
    Staircase Walls & Lift Walls: 4 hours
    Shear Walls: 2 hours

    Cover to the reinforcement shall be in accordance with IS: 456 - 2000 corresponding to MODERATE exposure
    conditions for the substructure and to satisfy the specified fire rating.
    Geotechnical Parameters

    The geo-technical investigation has been carried out by KCT


    Consultancy Service, Report No. ST/19/08/14465 and the
    report has been submitted to us. Based on this report:-

    We are considering the net SBC for the raft and isolated
    foundation as ranging from 400 kN/m2 to 410 kN/m2 as
    recommended on APPENDIX- 1 for 75 mm settlement at
    20.00m depth.

    The modulus of sub-grade reaction is considered as 9545.67


    kN/m2/m as per geo-technical report.
    Loadings To Be Considered For Analysis & Design

    TOWER-AB TOWER-CDE TOWER-FG TOWER-HIJ


    • Gravity Loads - Dead Load, Live Load, Super Imposed Load, Fire Tender Load

    • Lateral Loads - Seismic Loads, Wind Loads

    • Other Loads - Thermal Loads


    Seismic Performance Of Buildings

    TOWER-AB TOWER-CDE TOWER-FG TOWER-HIJ


    PART – 3 - STRUCTURAL EXPERT COMMENTS

    AND

    COMPLIANCE
    Structural Expert Comments

    EPICONS CONSULTANTS PVT.LTD SETU INFRASTRUCTURE


    It is necessary to mention in DBR about separation gap Separation Gap Have been provided for Tower & Non-
    between two connected buildings or else Temperature Tower Area.
    analysis will be required
    R Value can be taken as 5 if dual system (Ductile shear R Value is taken as 4, considering the Shear Wall
    walls with SMRF) is proposed Structural system
    Torsional modifiers of beams to be 0.001, please update Noted & Updated as per Comments.
    ETABS.
    Advice To Take Modal Time Period For Gust Loading. Time Period Considered Is Same As That Considered for
    Seismic Analysis.
    As per ETABS model concrete grade for column is taken as Concrete Grade have been Reduce for Upper Level Storey
    M45 and M40, however M35 can be introduced at higher as per Comments.
    levels.
    Structural Expert Certificate
    PART – 4 - R & B DEPARTMENT COMMENTS AND COMPLINCES

    • Work have been appreciated and No comments have been observed from R&B.
    PART – 5 – FINAL DESIGN & R&B CERTIFICATE
    Structural Layout For Raft (Final)
    Structural Design For Fold Section Of Raft (Final)
    Structural Layout For Raft (Final)
    Structural Layout For Raft (Final)
    R & B Department Certificate
    THANK YOU

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