Technology Selection for Rural Schools
V Sriraman

One of the keys to achieving national development is ensuring ‘full literacy’ in the country. Primary education is the hub of the literacy programme. During the last decade, universalisation of primary education has been identified as the major thrust area under the literacy programme.

Primary education, especially in the rural scenario, forms the basis for the growth of the rural communities in terms of economical, social and other forms of development. In other words, primary education is the foundation over which the country’s progress can be fortified.

The quality and effectiveness of primary education in our country depends to a greater extent on the physical infrastructure viz. the school building and the surrounding environment. It is also, of course, influenced by various factors pertaining to educational methods, such as teaching methods, teaching tools, evaluations etc.

The moment primary education became one of the national concerns, a specialised programme termed as the District Primary Education Programme (DPEP) was launched by the Government of India in many states of the country. This programme benefited from the bilateral funding support received from the British ODA (Overseas Development Administration). One of the basic objectives of DPEP is to provide better physical infrastructure and environment for primary schools. Each state has a project director who is responsible for the programme in the respective states. In 1995, a special programme within the frame work of DPEP was initiated in Andhra Pradesh. This programme was called the Andhra Pradesh Primary Education Programme (APPEP). This programme, by design, was envisaged to check the feasibility of using alternate building technologies in school construction.

 
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District Characteristics

Design Features

Bangalore Rural/ Mysore
1. Moderate climate, solar radiation moderate, maximum temperature 30-34 degree celsius and minimum temperature 16-18 degree celsius. Humid weather prevails for major part of the year.

Reduction of heat gain; Orientation of smaller walls to east & west; Shading by roof overhangs, trees, chajjas, etc.; Increase of heat loss; Ventilation through courtyard, windows facing wind direction, high level openings close to roof; Reduction of heat transmission to interior; Thermal insulation of roof.

2. Rainfall not exceeding 1000 mm, relatively dry winter.

Average rainfall is 600-800 mm. Not very high rainfall. Just moderate.

Bijapur, Bidar, Bellary, Gulbarga
1.

Hot dry climate, solar radiation intense, temperature maximum 32-43 degree celsius and minimum 6-20 degree celsius. Relative humidity very low 25-40 per cent.

This region has climatological features above moderate nature in terms of livable conditions. The temperature is very high during summer. However, the relative humidity is very low i.e. between 25-40 per cent. So certain design features needs to be incorporated while designing a building to keep indoor conditions comfortable.

2. Normal Annual Rainfall is 552.8mm

Relatively very dry winter.

Thermal Requirements

Design Features

1. Reduction of heat gain

Orientation of smaller walls to east and west. Small surface to volume ratio e.g., circular plan. Shading with overhanging roof and large tree in courtyard. Avoiding openings, other than doors.

2. Increase of heat loss

Ventilation by courtyard. Evaporation by vegetation, sprinkling.

3. Reduction of heat transmission to interior

Thermal insulation of roofs and walls e.g., thick walls, cavity walls. Reduction of air infiltration/ ventilation by providing wind breaker/fences against hot winds.

4. Balance for temperature fluctuation

Massive walls to increase time lag.

5. Control of humidity

By absorption/desorption of earth (mud) walls.

The objective, again, was to provide a better school design and ensure high quality, durable construction at reasonable costs. Or within a given budget it may be possible to provide more schools or increased floor area, by adopting cost-effective building systems. Tara Nirman Kendra, New Delhi participated in that programme for construction of prototype school buildings. Besides TNK, many other agencies such as CBRI, DAAT etc. also undertook construction of prototypes and adopted their own designs and technologies.

TNK professionals have learnt several things from the APPEP experience. The main learning was that in future the construction of prototypes should not be undertaken in isolation. The construction should always be taken up along with design and technological solutions.

A rapid appraisal of building materials and technologies in the specific region must be conducted and its output should be the basis for selection of appropriate building materials and systems. This is required even for construction of prototype school buildings. Therefore, for construction of schools in large numbers, such an exercise of selecting the right building material and technology for each component of constrution such as foundation, walls, roofs etc., must be based on a rapid appraisal of the specific region.

 
District Foundation Wall Roof
Bangalore Rural/ Mysore Burnt brick class I
Burnt brick class II
RRM upto G.L.
SSM above G. L.
RRM
SSM
Arched foundation in stone
Burnt brick class I
Burnt brick class II
Concrete blocks
Solid / Hollow
Hollow concrete block
Wire cut bricks
CSMB
Wire cut rat-trap
BB rat-trap
Mangalore tile
MCR tile
AC sheet

RCC void slab
RCC prefabricated slab
Jack arch
Ferrocement channels
Stone slabas
Bidar/Bellary/
Bijapur/Gulbarga
Burnt brick class I
Burnt brick class II
RRM upto GL RRM
above GL
RRM
SSM
Burnt brick class I
Burnt brick class II
Concrete blocks
masonry hollow/ solid 
Laterite
ACC sheet roofing
RCC void
RCC slab
RCC prefabricated
Stone slabs
Ferrocement channels roofs

Meanwhile, the experiences of various agencies involved in the construction of prototypes in APPEP and the British Council Division and the government officials who were part of APPEP were shared in a workshop "Vidyalayam", organised by BCD at Hyderabad in November 1996. The major outcome of that workshop in the last session "Way forward " was that:

"Based on the experience of APPEP, in Andhra Pradesh, other states should also look into the possibilities of innovative school designs and alternate technologies and products in the construction of prototypes.To make this happen, a special fund of Rs 50 lakhs called the innovation fund, will be created and allotted to each state."

With a view to improving primary school building in Karnataka, TNK, Bangalore proposed to DPEP, Karnataka that a study on "Design and Technology Choice" be commissioned for the benefit of primary schools to be constructed in Karnataka. TNK, subsequently with the agreement of DPEP, undertook the task of conducting reconnaissance in six districts of Karnataka and proposed the most appropriate building material and technologies for each district from various considerations such as topography, climate, material availability etc.

Mysore District

Indicative estimated plinth area

Rates of construction

  Technology Choice Type Design (Govt. system)

Design Types

Alt 1 Alt2 Alt3 Alt4
Standard Specification            
BBW, RCC T0   3253 3511 3633 3170
RRM, SSM, CSMB Filler Slab, MCR on steel T1 3134 2641 3346 3423 2047
RRM, SSM, CSMB FC roof, MCR on steel T2 2931 2464 3071 3098 2776
RRM, SSM, CC Blocks, Filler slabs, MCR on steel T3 3058 2612 3284 3396 2981
RRM, SSM, CC Blocks, FC, MCR on steel T4 2855 2405 2996 3014 2704
 
RRM = Random Rubble Masonry FC = Ferrocement
SSM = Sized Stone Masonry ACC = Asbestos Cement Concrete
GL = Ground Level MCR = Micro Concrete Roofing
CSMB = Cement Stabilised Mud Blocks BBW = Burnt Brick Work
RCC = Reinforced Cement Concrete      

The survey was conducted in the following districts of Karnataka:

Bangalore rural
Mysore
Bijapu
Gulbarga
Bellary and
Bidar

TNK, Bangalore started with retrieving secondary information to have a preliminary idea of the six districts in terms of terrain, climate, locally available building material resources and skills, and so on. Subequently, field staff were deployed to conduct building material survey in those districts. The information gathered was put into a data base and analysed. The analysis of data has provided interesting observations. The appropriateness of each building system option was evaluated from the following criteria:

Cost
Local availablity of raw material and skills
Employment and income generating opportunities
Embodied energy in the product and system

The innovative designs for school buildings were proposed, based on the prime factor of the functional requirement: Imagine a primary school building that does not have toilet; does not have a place for children to play; not even a place for storage of stationery and other teaching kits.

DPEP has brought out a publication on, "A guide to design for better learning environment", to enable the designers to propose a design that takes into account various design elements. In addition to referring to such useful publications and with a view to get the opinion of all those who are concerned in primary education, interviews were conducted with school teachers, parents, architects and DPEP staff in the districts that were surveyed.   q

For this Rural Habitat Special issue of the Newsletter we received a large number of articles. Some of the articles could not be accommodated in this issue, these will follow later. Thank you for your contribution.

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