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Analysis and Design of a Multi-Purpose Auditorium
using STAAD.Pro v8i
BY GROUP : 13
V. KRISHNA MADHUKAR 12241A01B6
V. VISHNU SAI 12241A01B7
R. SAI DEEPAK VARMA 12241A01A6
J. RAJENDER 13245A0122
J .RAJKUMAR 12241A0182
UNDER THE GUIDANCE OF
DR. C. LAVANYA
DEPARTMENT OF CIVIL ENGINEERING
IET
ABSTRACT
An Auditorium is a room built to enable the audience to hear and watch various activities such as performing arts, conducting
cultural events, professing lectures, and carrying out various presentations and seminars. As it could be used for all the occasions
stated above it is called as Multi-purpose Auditorium.
This project deals with the “ANALYSIS & DESIGN OF AN MULTI-PURPOSE AUDITORIUM USING STAAD.Pro v8i”. The design will be
in confirmation with IS 456:2000 and SP16 for plain and reinforced concrete, IS:875-1987 Part 1,2,3 for Dead load, Live load and
Wind load calculations,IS:1893-2002 for Seismic loads and IS 2526:1963 for acoustic design.
The plinth area of the proposed Auditorium is 1900 Sq m with a Seating capacity of 750 Nos, height of the Auditorium will be at
two levels +4.35m and +7.325m. M30 Grade of concrete and Fe- 500 steel will be used for all VRCC (Vibro-Roller compacted
concrete) works. Bored cast-in-situ end bearing piles with M30 grade of concrete will be used for foundation works.
PLAN & DETAILS
 Plinth area of the proposed
Auditorium is 1900 Sq m
 Seating capacity of 750 Nos
 height of the Auditorium 7.325m
 Bored cast-in-situ end bearing
piles
Analysis
The procedure followed in analyzing the auditorium is:
1. Generating the STAAD.Pro model
2. Assigning assumed cross sections
3. Assigning different types of loads and defining load combinations
4. Run the analysis
5. Verify STAAD output
Model in STAAD.Pro
THUMB RULE
SPAN LENGTH BEAM DEPTH
Upto 4m 300mm
Upto 6m 450/500mm
Upto7.5m 600mm
Upto 9m 750mm
Upto10m 800mm
Upto 12m 900mm
LOAD DETAILS
Dead load
Self weight of structure (FACTOR 1)
15 KN/m ( Wall load)
2.7 KN/ m (Parapet wall)
7.5 KN/m (Green Room)
4.625KN/m2 (Floor load)
Live Load
1.5 KN/m2
Shear force in Y direction
Bending Moment in Z direction
DESIGN
The structural elements that are to be designed are
1. SLABS
2. BEAMS
3. COLOUMNS
4. FOUNDATION
Apart from Structural Design Auditorium has to be designed with proper Acoustics
SLAB PANEL @
4.25 m Lvl
Load Details
DL : Self weight of slab : 25 KN/ m2
Floor finish : 26.7KN/m2
LL :Assembly with fixed seats : 4KN/m
Factored Load : 14.775 KN/m
ROOF SLAB @
7.325m Lvl
Load Details
DL : Self weight of slab : 25 KN/ m2
Floor finish : 26.7KN/m2
LL : Sloping roof upto 10 degrees when
access is not provided : 1.75 KN/m
Factored Load : 10.38KN/ m
BEAMS
There are different beams with
different sectional properties, such as..
0.13 X 0.23
0.38 X 0.23
0.43 X 0.3
0.52 X 0.3
0.73 X 0.3
0.88 X 0.3
1.2 X 0.45
Sample of Beam Design through STAAD
COLUMNS
DIFFERENT SETS OF COLOUMN
SECTIONS ARE..
0.3 X 0.45
0.3 X 0.6
0.53 X 0.3
0.75 X 0.3
1.2 X 0.45
0.6 Dia
Sample of column Design through STAAD
FOUNDATION
Steps to be followed in designing through STAAD Foundation:
1. Import STAAD File
2. Generate load combinations
3. Column positioning
4. Defining design parameters
5. Pile arrangement
6. Run analysis
7. Study design results
Generate load combinations
Column positioning
Defining design parameters
Pile arrangement
Analysis and Desin of Multi purpose Auditorium
3D View of the Auditorium
Terminology
Auditorium
Foyer
Lounge
Proscenium
Rear wall
Balcony parapet
Raking of Seats
Reverberation
Echo
Acoustic Requirements
a) correct reverberation time,
b) absence of echo,
c) correct loudness level at all parts of the hall,
d) low background noise,
General Principles of Acoustic design
1) Site selection
Depending on ambient noise level
Background noise should not be more than 40-45 dB
2) Size and Shape
◦ in relation to the number of audience required to be seated.
◦ Avg height – 6 to 7.5 m, Fan shape is considered best, sidewalls shall not be
more than 100 degrees, Farthest seat shall not be more than 23 m with the
curtain line
3) Stage
Depends upon the type of Performance the hall is to cater for,
4) Roof and ceiling
False ceiling, Sound proof material
Rear portion of ceiling is treated with sound absorbing material
5) Floor
Successive seats have to be raised over preceding ones, so that the listener head is about 12 cm above
the path of sound, which would pass over the head of the front person.
Angle of elevation of the inclined floor in auditorium should not exceed 8degrees
20% of the seating area should be allocated for lobby, Foyer
6) Seats
The angle subtended with the horizontal at the front most observer Should not exceed 30 degrees
Distance between the stage and front row should be 3.6m – 4.5m
Width of seat – 45- 56 cm
Distance between seats back to back – 85 - 106cm
7) Reverberation time :
Reverberation time is defined as the time it takes for an impulse of sound in a room to decay 60 dB, or
one millionth of the original level. This value is affected by most everything in the room, including room
volume, absorption of room materials, diffusion from surfaces, and room temperature and pressure
8) Distribution of Acoustic Material
Those areas which cause objectionable sound reflection and need to be treated with sound absorbents
should be earmarked for treatment with sound absorbing material. These areas are
(a) the rear wall,
(b) the balcony parapet,
(c)any areas which may reflect sound back to the stage,
(d) concave areas
9) Sound Absorbing Materials
In an average hall, most of the absorption is provided by the audience. It is therefore, becomes desirable
to introduce special absorbers(such as wooden panelling) on ceilings and walls which will provide the
requisite amount of absorption so as to achieve optimum reverberation-time.
ADDITIONAL SCOPE
 Carrying estimation and costing of the project
 Scheduling of the project by brainstorming various activities and time required for each
activities
 Managing construction phase using various project management tools like MS Project and
Primavera.
Conclusion
This project concerns the feasibility of construction of an auditorium with good
acoustic properties.
It involves the application of earlier coursework to carry out the analysis and
design of components of structure.
It was analysed using STAAD.Pro using generic loading, and AUTOCAD for
drawing and detailing the c/s and l/s of structural members.
The construction of auditorium presents a solution for many cultural
programmes being held.
References
https://www.academia.edu/6029955/ANALYSIS_DESIGN_ESTIMATION_OF_CIVIL_ENGINEERING_PROJ
ECT
https://www.wbdg.org/design/auditorium.php (WBDG National institute of Building sciences)
http://www.acoustics.asn.au/conference_proceedings/ICA2010/cdrom-ISRA2010/Papers/P3d.pdf
Howard Latham, Subjective Measurements-Practice, The Measurement of Quality in Auditorium
Acoustics by Subjective Scaling Methods - A Review of Developments in Theory and Practice,
1983, Pg. No. 1, 9
Howard Latham, Summary, The Signal-To-Noise Ratio for Speech Intelligibility- an Auditorium
Acoustics Design Index, 1979, Pg. No. 1
Video tutorials for STAAD Software
For Plans : bhargav buildpro technologies pvt. ltd
IS: 456 (2000), Plain and Reinforced Concrete Code Of Practice, Bureau Of Indian Standards, New Delhi.
IS: 875 (Part I) (1987), Code of practice for design loads (other than earthquake) for buildings and structures Part I Dead
Loads – Unit weights of building materials and stored material.
IS 875 (Part II) (1987), Code of practice for design loads (other than earthquake) for buildings and structures Part II
Imposed loads.
IS 875 (Part III) (1987), Code Of Practice For Design Loads: Wind Loads
SP: 16, Design aid for reinforced concrete structures to IS: 456 (1978)
IS 2526:1963, Code Of Practice For Acoustical Design Of Auditorium And Conference Halls

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Analysis and Desin of Multi purpose Auditorium

  • 1. Analysis and Design of a Multi-Purpose Auditorium using STAAD.Pro v8i BY GROUP : 13 V. KRISHNA MADHUKAR 12241A01B6 V. VISHNU SAI 12241A01B7 R. SAI DEEPAK VARMA 12241A01A6 J. RAJENDER 13245A0122 J .RAJKUMAR 12241A0182 UNDER THE GUIDANCE OF DR. C. LAVANYA DEPARTMENT OF CIVIL ENGINEERING IET
  • 2. ABSTRACT An Auditorium is a room built to enable the audience to hear and watch various activities such as performing arts, conducting cultural events, professing lectures, and carrying out various presentations and seminars. As it could be used for all the occasions stated above it is called as Multi-purpose Auditorium. This project deals with the “ANALYSIS & DESIGN OF AN MULTI-PURPOSE AUDITORIUM USING STAAD.Pro v8i”. The design will be in confirmation with IS 456:2000 and SP16 for plain and reinforced concrete, IS:875-1987 Part 1,2,3 for Dead load, Live load and Wind load calculations,IS:1893-2002 for Seismic loads and IS 2526:1963 for acoustic design. The plinth area of the proposed Auditorium is 1900 Sq m with a Seating capacity of 750 Nos, height of the Auditorium will be at two levels +4.35m and +7.325m. M30 Grade of concrete and Fe- 500 steel will be used for all VRCC (Vibro-Roller compacted concrete) works. Bored cast-in-situ end bearing piles with M30 grade of concrete will be used for foundation works.
  • 3. PLAN & DETAILS  Plinth area of the proposed Auditorium is 1900 Sq m  Seating capacity of 750 Nos  height of the Auditorium 7.325m  Bored cast-in-situ end bearing piles
  • 4. Analysis The procedure followed in analyzing the auditorium is: 1. Generating the STAAD.Pro model 2. Assigning assumed cross sections 3. Assigning different types of loads and defining load combinations 4. Run the analysis 5. Verify STAAD output
  • 6. THUMB RULE SPAN LENGTH BEAM DEPTH Upto 4m 300mm Upto 6m 450/500mm Upto7.5m 600mm Upto 9m 750mm Upto10m 800mm Upto 12m 900mm
  • 7. LOAD DETAILS Dead load Self weight of structure (FACTOR 1) 15 KN/m ( Wall load) 2.7 KN/ m (Parapet wall) 7.5 KN/m (Green Room) 4.625KN/m2 (Floor load) Live Load 1.5 KN/m2
  • 8. Shear force in Y direction
  • 9. Bending Moment in Z direction
  • 10. DESIGN The structural elements that are to be designed are 1. SLABS 2. BEAMS 3. COLOUMNS 4. FOUNDATION Apart from Structural Design Auditorium has to be designed with proper Acoustics
  • 11. SLAB PANEL @ 4.25 m Lvl Load Details DL : Self weight of slab : 25 KN/ m2 Floor finish : 26.7KN/m2 LL :Assembly with fixed seats : 4KN/m Factored Load : 14.775 KN/m
  • 12. ROOF SLAB @ 7.325m Lvl Load Details DL : Self weight of slab : 25 KN/ m2 Floor finish : 26.7KN/m2 LL : Sloping roof upto 10 degrees when access is not provided : 1.75 KN/m Factored Load : 10.38KN/ m
  • 13. BEAMS There are different beams with different sectional properties, such as.. 0.13 X 0.23 0.38 X 0.23 0.43 X 0.3 0.52 X 0.3 0.73 X 0.3 0.88 X 0.3 1.2 X 0.45 Sample of Beam Design through STAAD
  • 14. COLUMNS DIFFERENT SETS OF COLOUMN SECTIONS ARE.. 0.3 X 0.45 0.3 X 0.6 0.53 X 0.3 0.75 X 0.3 1.2 X 0.45 0.6 Dia Sample of column Design through STAAD
  • 15. FOUNDATION Steps to be followed in designing through STAAD Foundation: 1. Import STAAD File 2. Generate load combinations 3. Column positioning 4. Defining design parameters 5. Pile arrangement 6. Run analysis 7. Study design results
  • 21. 3D View of the Auditorium
  • 23. Acoustic Requirements a) correct reverberation time, b) absence of echo, c) correct loudness level at all parts of the hall, d) low background noise,
  • 24. General Principles of Acoustic design 1) Site selection Depending on ambient noise level Background noise should not be more than 40-45 dB 2) Size and Shape ◦ in relation to the number of audience required to be seated. ◦ Avg height – 6 to 7.5 m, Fan shape is considered best, sidewalls shall not be more than 100 degrees, Farthest seat shall not be more than 23 m with the curtain line 3) Stage Depends upon the type of Performance the hall is to cater for,
  • 25. 4) Roof and ceiling False ceiling, Sound proof material Rear portion of ceiling is treated with sound absorbing material 5) Floor Successive seats have to be raised over preceding ones, so that the listener head is about 12 cm above the path of sound, which would pass over the head of the front person. Angle of elevation of the inclined floor in auditorium should not exceed 8degrees 20% of the seating area should be allocated for lobby, Foyer 6) Seats The angle subtended with the horizontal at the front most observer Should not exceed 30 degrees Distance between the stage and front row should be 3.6m – 4.5m Width of seat – 45- 56 cm Distance between seats back to back – 85 - 106cm 7) Reverberation time : Reverberation time is defined as the time it takes for an impulse of sound in a room to decay 60 dB, or one millionth of the original level. This value is affected by most everything in the room, including room volume, absorption of room materials, diffusion from surfaces, and room temperature and pressure
  • 26. 8) Distribution of Acoustic Material Those areas which cause objectionable sound reflection and need to be treated with sound absorbents should be earmarked for treatment with sound absorbing material. These areas are (a) the rear wall, (b) the balcony parapet, (c)any areas which may reflect sound back to the stage, (d) concave areas 9) Sound Absorbing Materials In an average hall, most of the absorption is provided by the audience. It is therefore, becomes desirable to introduce special absorbers(such as wooden panelling) on ceilings and walls which will provide the requisite amount of absorption so as to achieve optimum reverberation-time.
  • 27. ADDITIONAL SCOPE  Carrying estimation and costing of the project  Scheduling of the project by brainstorming various activities and time required for each activities  Managing construction phase using various project management tools like MS Project and Primavera.
  • 28. Conclusion This project concerns the feasibility of construction of an auditorium with good acoustic properties. It involves the application of earlier coursework to carry out the analysis and design of components of structure. It was analysed using STAAD.Pro using generic loading, and AUTOCAD for drawing and detailing the c/s and l/s of structural members. The construction of auditorium presents a solution for many cultural programmes being held.
  • 29. References https://www.academia.edu/6029955/ANALYSIS_DESIGN_ESTIMATION_OF_CIVIL_ENGINEERING_PROJ ECT https://www.wbdg.org/design/auditorium.php (WBDG National institute of Building sciences) http://www.acoustics.asn.au/conference_proceedings/ICA2010/cdrom-ISRA2010/Papers/P3d.pdf Howard Latham, Subjective Measurements-Practice, The Measurement of Quality in Auditorium Acoustics by Subjective Scaling Methods - A Review of Developments in Theory and Practice, 1983, Pg. No. 1, 9 Howard Latham, Summary, The Signal-To-Noise Ratio for Speech Intelligibility- an Auditorium Acoustics Design Index, 1979, Pg. No. 1 Video tutorials for STAAD Software For Plans : bhargav buildpro technologies pvt. ltd
  • 30. IS: 456 (2000), Plain and Reinforced Concrete Code Of Practice, Bureau Of Indian Standards, New Delhi. IS: 875 (Part I) (1987), Code of practice for design loads (other than earthquake) for buildings and structures Part I Dead Loads – Unit weights of building materials and stored material. IS 875 (Part II) (1987), Code of practice for design loads (other than earthquake) for buildings and structures Part II Imposed loads. IS 875 (Part III) (1987), Code Of Practice For Design Loads: Wind Loads SP: 16, Design aid for reinforced concrete structures to IS: 456 (1978) IS 2526:1963, Code Of Practice For Acoustical Design Of Auditorium And Conference Halls

Editor's Notes

  1. Model in STAAD.Pro
  2. Sample of Beam Design through STAAD
  3. 3D View of the Auditorium