Disseratation --------- A2 - R2 - DB.pptx

research paper

1. CASE STUDY – Hirebettu House : A Vernacular Style Residence in Hirebettu, Udupi. A three-acre Hirebettu House nestles in the characteristic greenery of South Canara region, about 12 km north from the city of Udupi. Hirebettu house was once the center of a way of life. The walls and floors have been renovated, but the framework is still the same. Previously, there was mud walls and cow dung flooring; now, there is vitrified tile flooring and mud blocks with 2.5-foot-thick cement plastering. Mangalore tiles with a sloping roof stay the same. The building is of 8000 square feet area and the layout is rectangular , with a total of 8–10 rooms. There are two rows of columns on the outside area. Large courtyard entryway with columns and communal open area. On vertical surfaces, there is plenty of perforation and cross ventilation . Seasoned wood is a common building material and is often used in fine woodwork. The employed substantial structural components made of genuine teak that had been varnished and well-seasoned to withstand dampness. The building has eaves boards at the roof margins and is a double-story construction. On Mangalore tiled roofs, teak timber rafts support the tiles. They are granite and laterite composition with a double floor height. The exterior mud walls were completed with straw, jaggery, and brick . The occupant utilized cement and tiles since the front walls' mud walls had grown unstable. The timber windows were replaced with glass panes and iron grilles . The paintings on the wall used natural pigments . The granite surface at the front of the house is known locally as “ The Truth Stone ." Front View of Hirebettu House 2 rows of columned outdoor space Large courtyard entrance with columns Entrance door of teak wood Columned Community Space Well-seasoned teak used for the structure. Granite and laterite composition Vitrified tile Flooring Teak timber rafts Exterior Mud Walls Double-story height Mangalore tile roof with cross-ventilation

2. Climate Study The temperature typically ranges up to 38 °C (100 °F) during the summer (March to May) and from 32 to 20 °C (90 to 68 °F) in the winter (December to February). At 27 meters (89 feet) above mean sea level, Udupi is elevated. Udupi has a good winter climate and scorching summers. The monsoon season lasts from June to September and is characterized by strong winds and an average annual rainfall of around 4,000 mm (160 in). Criteria Mahoney’s Guidelines Hirebettu Vernacular Building Orientation Long axis along east-west Long axis along north-south Walls Heavy external & internal walls – thermal capacity 450mm walls – high thermal capacity Roofs Heavy roofs, over 8-h time-lag 300mm thick roofs Layout Open spacing for breeze penetration Rectangular building with courtyard Openings Medium openings, 20-40% According to cross ventilation Rain protection Protection from heavy rain Overhangs – 300mm Air movement Rooms single banked Double banked rooms Criteria of Case Study Selection P assive Solar Features Mahoney’s guidelines-based observation in vernacular dwellings of Udupi

3. Study Analysis - PRESENT Model Model Data Rendered View

4. Study Analysis - MODIFIED Construction details, Occupancy and Activity Patterns including openings and heat gain were input based on present observation. Since the Simulation Model responds to climate files, one cannot expect an exact one-to-one temperature correlation, Construction – External Walls

5. Inferences