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Effect of Canopy Projection on Protection of Building Entrances from Rain

Abstract

The study examines the effect of canopy projection on the protection of building entrances from rain, with emphasis on how the horizontal extent of entrance canopies influences the amount of rainwater reaching doorways, entrance floors, and immediate access areas. Canopies serve as important architectural elements for shielding building entrances from direct rainfall and reducing water-related problems around access points. Their projection depth can influence the effectiveness of this protection, particularly during periods of heavy rainfall and wind-driven rain. The study will assess the relationship between canopy projection and the level of rain protection provided at building entrances. Attention will be given to canopy projection depth, canopy width, height above the entrance, entrance orientation, roof form, doorway dimensions, surrounding ground surfaces, drainage arrangements, and exposure to prevailing wind and rainfall. Rain protection will be assessed through observations of water penetration, wetness of entrance floors, rain splash, water accumulation, and the extent to which rainfall reaches doorways and immediate circulation areas. A descriptive comparative research design will be adopted for the study. An appropriate sample of buildings with varying canopy projection dimensions will be selected using a suitable sampling technique. Data will be collected through physical observation, dimensional measurements, photographic documentation, assessment of entrance conditions during or after rainfall events, and structured questionnaires where necessary. The collected data will be analyzed using descriptive statistics such as frequency, percentage, mean, and standard deviation, while appropriate comparative and correlation techniques will be applied to examine differences in rain protection associated with varying canopy projections. The study is expected to reveal differences in the level of rain protection provided by canopies with varying projection depths. Canopies with adequate projection are expected to reduce direct rainfall exposure, rain splash, and wetness around entrance areas more effectively than shallow projections. However, the effectiveness of canopy projection may vary according to entrance orientation, rainfall intensity, wind direction, canopy height, canopy width, building form, and surrounding drainage conditions. Very shallow projections may provide limited protection, while appropriately designed projections are expected to provide more effective coverage of entrance areas. The findings will be useful to architects, building designers, contractors, developers, facility managers, and other professionals involved in the design and maintenance of public and residential buildings. The study may provide practical information for determining suitable canopy projections that improve weather protection at building entrances and reduce problems associated with wet floors, water intrusion, and deterioration of entrance components. It may also support climate-responsive architectural design by encouraging greater consideration of rainfall conditions during the planning of building entrances. The study will conclude by establishing the effect of canopy projection on the protection of building entrances from rain and emphasizing the importance of appropriate canopy dimensions in entrance design. It is recommended that canopy projection be carefully considered alongside entrance orientation, canopy height, rainfall characteristics, wind exposure, and drainage conditions to achieve effective rain protection. Further studies should examine canopy projection performance under different rainfall intensities, wind conditions, building types, and entrance configurations.

Keywords: Canopy projection, building entrances, rain protection, entrance canopy, rainfall, rain splash, water intrusion, building design, entrance design, weather protection, canopy depth, building envelope, climate-responsive design, architectural design, sustainable architecture.