design of seminar hall

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DESIGN OF SEMINAR HALL

BY RUSHABH .H. SHAHDiploma in civil engineeringVartak polytechnicVasai-west ,Dist-ThaneINDIA

BY RUSHABH .H. SHAH 2

INTRODUCTIONSeminar hall rooms are designed to

facilitate interaction and face-to-face discussion among students

Our primary reason for asking you to read this guidance is to convey the lessons learned and help you avoid “reinventing the wheel” as design of future projects proceeds. We are confident this will expedite the design process and create better learning environments.


OBJECTIVESOur program to upgrade learning environments

has the following objectives:Encourage interactive learningProvide comfortable seating with larger work

surfacesAdd multi-media audio-visual systems with

good sight linesProvide a link to the Internet from every

learning roomImprove access for all personsIncrease flexibility to respond to future needsIncrease seminar hall use rates


LITERATURE REVIEW


Seats

The acoustical property of the seats should be essentially the same whether they are vacant or occupied.

When selecting seating in order to achieve minimum standards of comfort, aspects such as width of seat, type of lumbar support, appearance, versatility of seating, replacement availability/ease of maintenance and cost should be considered


TYPES OF SEATING MOVABLE SEATING FIXED SEATING


The following seating types do not meet this guidance and should not be considered

Movable chairs with tablet-armsPivot-arm seats without adjustable-height

seats and backsPivot-arm seats that do not comfortably

accommodate large/small studentsPedestal seats bolted to the floorMovable student desks with seats attachedCustom-designs that cannot be used by all

students, such as:Oversize tables and chairsAdjustable-height tables


The Seminar hall Interiors


DESIGN OF SEMINAR HALL

Seminar halls should be developed and designed from the “inside out”. The following items should be considered when creating a new seminar hall:

The optimum orientation and shape of the seminar hall should be determined by the primary expected teaching style, the capacity of the room, and the level of mediation.

Designing for the flexibility of room use is strongly encouraged. The more square footage allotted to each student, the greater the

opportunity for flexibility.


WINDOWS

Daylight is an important part of most learning environments. Windows should be included in seminar halls whenever possible. Lecture halls require excellent light control. This can be accomplished by eliminating windows (except for the vision panels in the doors) or by having shades that completely block the light. If windows must be preserved as an exterior architectural element, glass panes can be replaced with mirrors or other opaque material or the entire window opening can be covered on the inside with some type of decorative/acoustic panel.


PROJECTION SCREEN

Because many seminar hall rooms are rather small, they may have a single screen. If users need a second screen and space permits, it is always preferable to mount two screens. The screen(s) should be matte white and mounted so that board space is available when one screen is down.


Ceiling-Mounted Projectors


Ceiling-Mounted ProjectorsLow noise levelUniformly bright, clear images with

good resolution and excellent color rendition

Compatibility with other audio-visual components

Reliability; availability and cost of replacement parts

Compact size to avoid blocking views of screens and marker boards


Equipment Closets

Increasingly, users find it more convenient to have equipment at the front of the lecture hall where it is more convenient to the instructor. AV equipment closets often house equipment in racks as well as carts for equipment that isn’t permanently installed in the room but is used on a regular basis


Increase energy efficiency and the ability to see projected images by using:

Lighting controls that automatically turn off lights in vacant rooms Energy-efficient dimmable lighting for seating areas Light fixtures that don’t block views of: Screens, marker boards, or instructors Light paths from projectors Lighting zones and levels appropriate for each area of the room

(see diagram): 70 foot-candles over seating areas only, dimmable to 5 to 10 foot-

candles In rooms were very dark images such as x-rays are projected,

provide lighting dimmable to 2 foot-candles and full blackout capability

Avoid lights in front of projection screens Lower light levels in corridors and instructor areas, and on ramps

and tiered floors Task light for instructor work stations that avoid light spill over to

screens/monitors


Walls and Ceiling


WALLSWalls should be constructed of a

durable material that is easy to maintain and should be basically acoustically non-absorbent except in those areas of the lecture halls where acoustical treatment is prescribed.


CEILINGThe ceiling is the most critical

element in insuring that the sound in the lecture hall is distributed evenly and at appropriate loudness to all portions of the seating area. The ceiling should act as a sound mirror, reflecting sound downward to blend with the sound from the speaker system.


ACOUSTICSThe word acoustics is originally

derived from a Greek word meaning to hear. Hence, the acoustics is defined as the science of sound and as such, it discusses the origin, propagation and auditory sensation of sound.


VELOCITY OF SOUND

The speed at which the sound waves travel or pass through any medium is termed as the sound velocity and it depends on the nature and temperature of medium through which the sound travels. Table gives the sound velocities in different mediums


SOUND VELOCITIES IN DIFFERENT MEDIUMS

MediumSound velocity at 20 *

C in m/sec

Atmospheric air 340

Hydrogen 1305

Nitrogen 338

Pure water 1450

Granite 6400

Glass 5000 to 6000

Aluminum 5100

Brick 4300

Concrete 4000

Iron 4700 to 5100

Copper 3900

Brass 3500

Silver 2600

Lead 1320

Cork 450 to 530

Rubber 40 to 150


dB METER


A sound level meter or sound meter is an instrument that measures sound pressure level, commonly used in noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmental and aircraft noise

It is generally used to calculate the intensity of sound at any distance we want itis very useful instrument when learning about itensity of sound and basic unit of measurement is in decibels

http://en.wikipedia.org/wiki/Sound_pressure

http://en.wikipedia.org/wiki/Noise_pollution

http://en.wikipedia.org/wiki/Noise

http://en.wikipedia.org/wiki/Aircraft_noise


SABIN’S EQUATION

Prof. W.C. Sabine of Harvard University, U.S.A. carried out a number of experiments in rooms of different sizes and he was able to establish the following formula which is knows as Sabin’s equationt=Where t= reverberation time in secondsV= volume in m3 A= total absorbing power in m2-sabins=(a1s1+a2s2+a3s3+…..) Absorption units of individual objectsS1, s2, s3etc .being the coefficient of absorptionof respective surfaces a1, a2, a3, etc.


ABSORBENT MATERIALS

Most of the common building materials absorb sound to a small extent and hence, for better acoustical requirement, some other materials are to be incorporated on the surfaces of the room. Such materials are known as the absorbent materials and they help a great deal in making the room acoustically good.


The requirements of a god acoustical material are as follows

It should be durable and should not be liable to be attacked by insects, termites , etc.

It should be easily available at a reasonable cost. It should be efficient over a wide range of

frequencies. It should be fire resistant. It should be non-hygroscopic and heat insulating. It should be self-supporting and should be

capable of easy fixing. It should give pleasing appearance after fixing. It should have high coefficient of absorption. It should have sufficient structural strength


FACTORS TO BE CONSIDERED IN THE ACOUSTIC DESIGN OF AN SEMINAR HALL

VolumeSound absorptionShapeSite selectionSeats and seating

arrangement


DEFECTS IN SEMINAR HALL

Dead spotsLoudnessExterior noiseFormation of echoesSound fociReverberation


CASE STUDYFor our topic design of seminar hall we

considered the seminar hall of BHAUSAHEB VARTAK POLYTECHNIC the current acoustical properties were studied and we suggested 3 changes in order to improve the acoustical properties of the seminar hall the changes will help to make the seminar hall acoustically sound. All the dimensions were calculated of semianr hall


CASE STUDY

So the 3 changes were Changing the position of speakerAddition of curtains on windowsAddition of carpet So in the next slide these were the

current condition of seminar hall


Current condition of seminar hall


Modified seminar hall


The red color represents the carpet then the curtains are shown on windows and the speaker location is changed in order to make it acoustically sound.


ConclusionThis Design Guidance for Learning Environments

is intended to answer the questions our design consultants ask most frequently. It is intended to be performance-oriented, not prescriptive, so that creative design solutions can be developed within the general guidelines presented as long as performance goals are met

Design guidance is of little value if it is not read, understood, or followed. We welcome suggestions to improve it, and we actively solicit opinions from faculty, students, and staffs after new rooms are brought on-line.


FUTURE SCOPEThis project will result in benefit of

the student. Better amenities in the seminar hall can help students to understand the topic effectively. Development on this project is essential part of the education; better hall we provided to student will result in better scores and understanding in them. This project will help us for the future projects taken by us


Bibliography

Rangwala, building construction (2011). Acoustics Building bulletin 93. Acoustic design of schools Georgia institute of technology – Ga Tech (2005) A method to predict reverberation time concert hall preliminary design stage. Journal of building acoustics- vol 18 – Improvement in acoustics. Arizona state university (2011) - Classroom design guide. Idoha state university (2010/2011) – Design standards University of Maryland (2004)- Classroom design manual

design of seminar hall

Engineering

shah diploma

new seminar hall

seminar hall interiors

seating areas light

comfortable seating

versatility of seating

learning room

following seating types