Terrace Garden Design Overall Layout: Dimensions: 20' x 15' Walls: Double-height building wall on one side, 4' boundary wall on the other. Covered Area: 8' x 15' for barbecue and other activities. Design Elements: Wooden Louvered Door: A sliding wooden louvered door can be installed at the further end of the terrace, leading to the covered area. Louvers provide privacy and allow for natural ventilation. Consider using a weather-resistant wood like cedar or redwood. Covered Area: A pergola or retractable awning can be used to cover the 8' x 15' area. This will provide shade and protection from the elements. Install a ceiling fan or a misting system for comfort during hot weather.