Degree College and Hill Complex, Leh, Himachal Pradesh

Degree College and Hill Council Complex,Leh, Himachal Pradesh

Electives Case StudyGaurav N. Kotak

A1319Sem 5

INTRODUCTION• Leh in Ladakh is a "mountain desert." There is very little

precipitation and the temperatures vary greatly between the day and night and also from summer to winter.

• The traditional Ladhaki settlement is usually built on steep slopes facing southward. This allows good insulation during the day.

• Heavy walls (mud) and a well insulated roof (timber & mud) dampen the variations of indoor temperatures.

• The use of glass and nowadays, trombe- wall is very successful as heat can be stored in the building mass during the day, to stay warm indoors at night.

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COLD AND SUNNY CLIMATE IN INDIA

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CLIMATE The solar radiation is generally intense with a very

low percentage of diffuse radiation.

In summer, the temperature reaches 17 – 24 ºC during the day and 4 – 11 ºC at night.

In winter, the values range from -7 to 8 ºC during the day and -14 to 0 ºC at night. Winters thus, are extremely cold.

The relative humidity is consistently low ranging from about 10 – 50 % and precipitation is generally less than 200 mm per year.

Winds are occasionally intense. The sky is fairly clear throughout the year with a cloud cover of less than 50%.

DESIGN CRITERIA AND FEATURES

OBJECTIVESResist heat loss•Decrease exposed surface area

•Increase thermal resistance

•Increase thermal capacity

•Increase buffer space

•Decrease air exchange rate

•Increase surface absorptivity

Promote heat gain•Reduce shading

•Utilize heat from appliances

•Trapping heat

PHYSICAL MANIFESTATIONS• Orientation and shape of the building.

use of tress as wind barriers.

• Roof insulation, wall insulation and double glazing.

• Thicker walls

• Air locks/lobbies

• Weather stripping

• Darker colours

• Wall and glass surfaces

• Sun spaces/green spaces/ trombe walls etc.




Degree College and Hill Council Complex,Leh, Himachal Pradesh

PROJECT DETAILS

• Building Type : Institutional

• Climatic Zone : Cold And Sunny

• Location : Leh, Ladakh

• Architects : Arvind Kishan & Kunal Jain


SITE Located at 3514 m above mean sea level Elongated Rectangle with the land sloping towards South Characteristic of the cold dry desert condition – large barren lands with no vegetation


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Assembly Hall – Zero – Consumption during Day - Time

ORIENTATION• The Rectangular site is along the north – south direction

• The structures are oriented in the west – east and north – south direction as design requirements

• Each structure has been treated specifically depending on its orientation.

• All the buildings in the north side of the complex have thick walls to minimise heat loss, while the buildings in the south side have been designed to maximise heating and daylight distribution.

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FENESTRATION

• Good insulation and minimum fenestrations to the northern exposure minimizes heat loss

• Double – Glazing helps control heat loss from glazingwithout creating condensation

• Maximum natural has been tapped where possible

Minimum fenestrations on the northern façade of the lecture halls

Natural Lighting

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VENTILATION Connective loop is coupled with cross ventilation through eastern – western fenestration Ventilation is achieved through the connective loop activated by buoyancy Consumes zero energy during normal hours of operation

Situated in the Upper – Himalayan Region Snow – capped Mountains on all four sides

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SITE ENVELOPE

WATER BODY & BUILDING OVERHANGS• Nil

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Illustration List

• http://arvindkrishan.com/?p=559• http://bcef.in/Download/new/green%20building/Sustainable%20habitats.pdf

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Environment

Degree College and Hill Complex, Leh, Himachal Pradesh