- Open Access
- Authors : Ashwini Mareena Sam, Devika J S, Panchami P S, Muhammad Salih N, Rajeev Kumar P
- Paper ID : IJERTV9IS060038
- Volume & Issue : Volume 09, Issue 06 (June 2020)
- Published (First Online): 06-06-2020
- ISSN (Online) : 2278-0181
- Publisher Name : IJERT
- License: This work is licensed under a Creative Commons Attribution 4.0 International License
Structural Analysis and Design of an Auditorium using Extended-3D Analysis of Building System
Ashwini Mareena Sam1, Devika J S2, Panchami P S3, Muhammad Salih N4, Rajeev Kumar P5*
1, 2,,3,4 IV yr BTech students; 5Professor
Department of Civil Engineering
Musaliar College of Engineering & Technology, Pathanamthitta, Kerala
Abstract This technical paper highlights the project work pertaining to the structural analysis and design of a multipurpose auditorium using a computer software, Extended3D Analysis of building System, abbreviated as ETABSÂ®. Shape of the auditorium was linear (rectangular). This includes planning, analysis of loads and designing of structural elements based on different loading conditions. Planning of acoustic and vision point of view were taken from National Building Code, and the limit state method of collapse using respective IS codes. AutoCADÂ® was used for drawing plan, elevation and section of auditorium. Design and analysis were done manually and the results were verified using ETABSÂ®. For completeness a cost estimation was also performed. Such a work would enable the economic design of an auditorium.
Keywords Structural analysis; design, ETABSÂ®, AutoCADÂ®, auditorium, cost estimation
An auditorium is a multipurpose facility where a room built to enable an audience to hear and watch performances. For movie theatres, the number of auditoria (or auditoriums) is expressed as the number of screens. Auditoria can be found in entertainment venues, community halls, and theatres, and may be used for rehearsal, presentation, performing arts productions, or as a learning space. Seating arrangements in an auditorium seating layout (or assembly space) are either be identified as multiple-aisle or continental. These terms are commonly found in design standards manuals, building codes, and similar architectural reference documents. Each size is unique, with specific guidelines governing row size, row spacing, and exit ways. Basically, a multiple-aisle arrangement will have a maximum of 1416 chairs per row with access to an aisle-way at both ends. In a continental arrangement, all seats are located in a central section. Here the maximum quantity of chairs per row can greatly exceed the limits established in a multiple-aisle arrangement. In order to compensate for the greater length of rows allowed, building codes will require wider row spacing, wider aisles, and strategically located exit doors. Although it would seem like more space is called for, a continental seating plan is often not any less efficient than a multiple-aisle arrangement. In fact, if it is carefully planned, a continental arrangement can frequently accommodate more seating within the same space .
Many researchers have conducted works in this area - . Objective of this paper is to perform the structural analysis and design of a multipurpose auditorium for a seating capacity of 1000 audience, at Pathanapuram municipality, Kerala state. In this paper details of the analysis and design of
an auditorium done by the software package called as ETABSÂ®. ETABSÂ® is the abbreviation of “Extended 3D Analysis of Building System . For completeness, a cost estimation for construction is also performed. It is thought that such a study would help to perform an economical and environment friendly design and construction of an auditorium at this location.
- LOCATION DETAILS OF THE SITE
The proposed site is at Pathanapuram municipality, Pathanamthitta district, Kerala state. Figure 1 shows the proposed site and Table 1 gives the details of the proposed auditorium:
District/State Pathanamthitta/Kerala Municipality/Taluk Pathanapuram Type of auditorium Multipurpose Type of soil in the site Lateritic soil Type of structure RCC/steel Estimated capacity 1000 Estimated Area 10764 sq. ft. Estimated Area of Auditorium 8000 10000 sq. ft District/State Pathanamthitta/Kerala Municipality/Taluk Pathanapuram Type of auditorium Multipurpose Type of soil in the site Lateritic soil Type of structure RCC/steel Estimated capacity 1000 Estimated Area 10764 sq. ft. Estimated Area of Auditorium 8000 10000 sq. ft
Fig. 1. Proposed site in Pathanapuram, Kerala state TABLE I. DETAILS OF PROPOSED AUDITORIUM
- ANALYSIS AND DESIGN OF AUDITORIUM
A: PLANNING OF AUDITORIUM
A number of standard codes approved by Indian Standard institutions has specified the following minimum requirements for the construction of the auditoriums:
- FRONT AND REAR OPEN SPACES:
No person shall erect a building unless it is set back at least 6m from the regular line of the street or from the street if no such regular line exists.
- PLAN AREA:
Plan area of the building is to be fixed at an occupant load of range 0.6 to 0.9 m2 /member.
Drawings were done using AutoCADÂ®. Details of the step- by-step procedure can be obtained from . Site plan, front elevation, side elevation, cross-section and plan are shown in Figures 2 to 6. Different components of the auditorium are given in Table 2.
Fig 2. Auditorium site planning
Fig 3. Auditorium front elevation
Fig 4. Section of auditorium
Fig 5. Auditorium side elevation
Fig 6. Auditorium plan view
B: ETABS ANALYSIS
As discussed in the above sections, structural analysis was done using ETABSÂ®. Different steps involved in the process is shown below.
TABLE II: COMPONENTS OF THE AUDITORIUM
Components Standard Sizes Size Provided Quantities Provide Side Entrance 1.5-3m 1.5 m 6 Main entrance 1.5m 1.5 m 1 Total seats at ground floor 0.45-0.65m 0.5m Ã— 0.46m 1000 no of seats per row 0.45-0.65m 0.5m Ã— 0.46m 10 no of seats per Coloumn 0.45-0.65m 0.5m Ã— 0.46m 50 Steps provided at entrance As per planning 3.5 m 3 Steps guiding to stage As per planning 1.7 m 6 at each side Distance between two chairs for circulation At least 0.85 m 0.87 m Changing room As per planning 3 Ã— 4 m 2 Gents Toilet As per planning 1.5 Ã— 1.5 m 3 Ladies Toilet As per planning 1.5 Ã— 1.5 m 3
The structure created in the ETABSÂ® is shownin Figure 7. Inbuilt algorithms in the software do the analysis of the structure and give the output files. Figures 8 and 9 show the loads applied on the structure and the output of final analysis output respectively. From the output files different standard sections can be obtained and it is used for the construction.
Fig 7. Structure created in ETABS
Fig 8. Loads applied on the structure
Fig 9. Output of analysis of the structure
- FRONT AND REAR OPEN SPACES:
- CONCLUDING REMARKS
This work highlighted the analysis and design of a multipurpose auditorium at Pathanapuram municipality, Kerala state using ETABSÂ® software. Preliminary drawings were done using AutoCADÂ®. For completeness, a cost estimation for the construction was also carried out and the estimated cost was found as Rs 1,22,00000/-.
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