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An Ambiguous Zone Connecting Interior and Exterior.
The doma is a rich, ambiguous space that is neither fully exterior nor interior. It allows for activities without removing shoes, making it versatile for tasks such as gardening, bicycle maintenance, and DIY projects. By incorporating the traditional Japanese doma concept into modern residences, the scope of daily living is expanded.
Spacious Earthen Floor Area Extending from the Entrance.
By extending the earthen floor beyond the entrance to the living room and kitchen, a dynamic spatial experience is created. This design enhances practicality by allowing bicycles and strollers to be pushed directly inside and providing a temporary storage area for shopping bags. The earthen floor becomes an integral part of the daily circulation, resulting in a flexible and functional living environment.
Flooring Materials: Mortar and Tiles.
For earthen floors, hard and durable materials such as mortar finishes, tile installations, or exposed aggregate surfaces are suitable. The atmosphere can vary significantly depending on the color and texture, so select materials that harmonize with the overall design of the residence. The choice of material ultimately defines the character of the earthen floor.
Seating Area Utilizing Level Differences.
By incorporating a level difference between the earthen floor and the interior floor, the stepped section serves as a seating area. Occupants can sit on the interior side to put on shoes or sit on the earthen floor side to enjoy views of the garden, enabling versatile usage. The level difference creates a distinct place within the space.
Compatibility with Wood-Burning Stoves.
Installing a wood-burning stove on an earthen floor allows you to leverage the floor's fire-resistant properties. Tasks such as carrying in firewood and cleaning out ashes can be performed on the earthen floor without concern for dirt or damage. The lifestyle centered around the warmth of the fire harmonizes exceptionally well with the earthen floor.
Storage for Bicycles and Motorcycles.
With a dirt floor area, bicycles and motorcycles can be stored indoors. This eliminates concerns about theft and provides protection from rain and wind. Maintenance work can also be performed on the dirt floor, allowing the space to function as an area to enjoy your hobby. The dirt floor thus serves as a garage for your prized vehicles.
Earthen Floor as a Workspace.
For activities that involve dirt and mess, such as DIY projects, pottery, and gardening, an earthen floor provides an ideal workspace. It allows for the use of water and tolerates floor soiling without concern, enabling full concentration on the task at hand. By installing workbenches and shelving, the space can also function effectively as a professional-grade atelier.
Ideal for Living with Pets.
For households with dogs, the earthen floor area allows for wiping paws after walks and storing pet supplies. This space provides a comfortable environment for pets, functioning as an intermediate zone between the interior and exterior. The earthen floor plays a significant role in harmonious living with pets.
Thermal Insulation, Airtightness, and Thermal Environment.
Since the earthen floor tends to become cold during winter, enhancing thermal insulation and airtightness improves comfort. Conversely, it also offers the benefit of feeling cooler in summer. Adjusting the thermal environment according to the seasons is key to ensuring year-round comfort.
Multipurpose functionality enabled by storage shelving.
By installing storage shelves on the walls of the earthen floor area, a variety of items such as shoes, outdoor equipment, tools, and gardening supplies can be organized efficiently. Both open shelves and those with doors can be selected according to the intended use. Enhanced storage capacity improves the functionality of the earthen floor space.
A Place for Family Gatherings.
By integrating the earthen floor area with the dining and living spaces, it becomes a lively place where the family gathers. Placing tables and chairs on the earthen floor allows for dining, children’s play, and other flexible uses. The earthen floor becomes the focal point of daily life.
Fusion of Tradition and Modernity.
The doma is a traditional Japanese space, but by integrating it with contemporary design, a new appeal emerges. Combining modern furniture and lighting creates a unique blend of Japanese and Western aesthetics. While inheriting tradition, create a doma that suits modern living.
Required Space and Desk Arrangement
The size of a study varies depending on its intended use; however, for primarily desk-based work, a functional space can be created within approximately 2 to 3 tatami mats. When arranging the desk, consider the natural light entering from the windows and the direction of the line of sight. It is important to choose an arrangement that suits the style—whether facing the wall for focused work or facing the window to enjoy the view.
Balance of Daylighting and Artificial Lighting.
Environments with natural light provide a comfortable workspace; however, when working on computers, care must be taken to avoid screen glare. North- or east-facing windows are preferable, but if orientation cannot be selected, adjustments should be made using blinds or curtains. Combining task lighting that illuminates the work surface with ambient lighting that lights the entire space creates an eye-friendly environment.
Enhanced Storage Planning.
Ample storage for organizing books, documents, and stationery is essential in a study. Incorporating custom-built bookshelves along an entire wall or integrating small storage compartments around the desk creates a functional and aesthetically pleasing space. It is important to plan the depth and height of the shelves based on the anticipated volume and size of the books to be stored.
Considerations for Soundproofing and Noise Insulation.
To prevent interference between activities such as online meetings and phone calls in the study and the household ambient noise, it is advantageous to have moderate noise insulation performance. Selecting doors with high airtightness and incorporating soundproofing sheets or sound-absorbing wall materials can create a quiet environment. While not equivalent to a fully soundproof room, a certain level of consideration significantly enhances comfort.
Desk Height and Chair Selection
The height of the desk directly impacts work efficiency. Generally, a height of approximately 70 to 72 cm is considered standard; however, adjustments are necessary based on the user's height and the chair's height to ensure proper balance. When designing a custom-built desk, creating a mock-up that allows for actual seating verification is also effective. Considering prolonged use, it is important to determine a height that minimizes physical strain.
Installation of Power Outlets and Communication Infrastructure.
A home office requires numerous power sources for devices such as computers, printers, desk lamps, and chargers. By installing an adequate number of power outlets around the desk area and ensuring that wiring is concealed, a clean and organized space can be maintained. Additionally, considering the installation of wired LAN connections and enhancing the Wi-Fi environment will contribute to creating a comfortable telework setting.
The Relationship Between Sightlines and Concentration.
Arranging a workspace with sightlines extending through a window provides a sense of openness; however, layouts facing a wall can be effective for enhancing concentration. Additionally, if the position of the door causes distractions due to people entering from behind, adjusting the seating position is advisable. It is essential to identify the arrangement that offers the greatest sense of calm and focus for oneself.
Color and a Focus-Conducive Environment.
The color scheme of a study room influences concentration and creativity. Calm tones such as navy, gray, and green facilitate focus, while beige and white create an open and bright atmosphere. Applying an accent color to a single wall is also effective. It is advisable to avoid overly stimulating colors and select hues that do not cause fatigue even after prolonged periods.
Ventilation and Indoor Air Quality.
In a study where occupants spend extended periods, the supply of fresh air is crucial. Ideally, the design should allow for natural ventilation through operable windows; however, if this is not feasible, appropriately positioned air inlets for a 24-hour mechanical ventilation system should be implemented. Additionally, incorporating indoor plants can provide visual comfort and, to a slight extent, contribute to air purification.
Privacy and the Sense of Distance with Family.
Whether to create a fully independent private room or a semi-private space depends on the family composition and working style. For households with young children, a semi-private area that allows for a sense of presence can be convenient. Conversely, if there are many times when focused concentration is required, a fully enclosed room with a door is more suitable.
Combination of Custom-Built and Prefabricated Furniture.
By custom-building desks and bookshelves, you can create a study that fits perfectly within the space, resulting in an elegant and cohesive environment. Custom furniture is particularly effective when aiming to maximize limited space. Conversely, considering the possibility of future layout changes, movable furniture also offers significant appeal. It is important to plan with a balanced approach between fixed and movable elements.
Adaptability for Multipurpose Use.
The study is a space designed for various uses beyond work, including leisure activities, reading, and meditation. Anticipating future needs—such as a children's study room or a hobby room after retirement—a flexible design ensures long-term usability. It is essential to allow for spatial allowances in storage and furniture arrangement to maintain adaptability.
Q&A
House with a Doma|Stylish Home Studies|Q&A
What is the practical size to allocate for a doma (earthen floor space)?
The appropriate size varies depending on its intended use, but an area of approximately 4 to 6 tatami mats allows for versatile functionality. For storage of bicycles or strollers, 2 to 3 tatami mats may suffice. Considering the family composition and lifestyle, it is advisable to design with some margin to accommodate potential future changes in use.
What materials are suitable for flooring in earthen-floored spaces (doma)?
Common materials include tamped earth (sanwado), mortar, and tiles. Mortar is relatively inexpensive and provides a clean finish but requires measures to prevent cracking. Tiles offer excellent ease of cleaning and a wide range of design options. Natural tamped earth has moisture-regulating properties but requires regular maintenance. Selection should be made according to the intended use.
How should the boundary between the earthen floor area and the living space be planned?
It is common practice to establish a clear distinction by incorporating a step or level difference. A height difference of approximately 15 to 20 centimeters helps prevent the intrusion of dust and dirt. Using sliding doors or shoji screens as partitions allows for flexible control between openness and privacy. Additionally, to maintain thermal performance, proper insulation and airtightness treatment at the boundary are crucial considerations.
What are the appropriate methods for implementing thermal insulation measures in earthen floors?
The standard practice is to install insulation materials beneath the earthen floor slab, known as slab insulation. It is essential to use airtight gaskets between the foundation and the sill plate to prevent cold air infiltration into the interior. Additionally, an appropriate ventilation strategy is necessary to address condensation issues. Designing with consideration for the overall thermal performance balance of the entire residence is crucial.
Is ventilation equipment necessary for work conducted on earthen floors?
Depending on the nature of the work, we recommend installing exhaust fans to manage odors, humidity, and dust emissions. It is effective to combine mechanical ventilation with natural ventilation. Please also consider integrating the system with a 24-hour ventilation system.
Is it possible to design with an emphasis on the connection between the earthen floor space and the garden?
By incorporating sliding doors that provide direct access from the doma to the garden and creating large openings without level differences, a seamless integration between indoor and outdoor spaces can be achieved. Techniques such as extending the eaves to form a semi-outdoor area or continuing the doma flooring material onto the outdoor terrace are also effective. This approach results in a highly attractive residence that allows for gardening activities even during rainy weather.
I long for a study room with a sense of enclosure that allows me to concentrate, but I am concerned it might feel cramped.
A space of 2 to 3 tatami mats is sufficient, but placing importance on the texture of the walls and ceiling can create a refined sense of enclosure. For example, painting one wall in a calm dark tone or using warm wooden paneling on the ceiling. Additionally, designing the window to frame greenery allows the line of sight to extend outward, alleviating any feeling of confinement and promoting a relaxing atmosphere.
Are there any tips for making built-in bookshelves appear more aesthetically pleasing?
Using adjustable shelves that can be modified to fit the size of the books eliminates wasted space and allows for orderly storage. Additionally, changing the color of the bookshelf’s back panel to contrast with the wall or incorporating indirect lighting can highlight the displayed books and create a gallery-like atmosphere. Avoiding a fully open design by including doors on some sections helps conceal clutter and maintain a clean appearance.
How should natural lighting be planned for a study room?
Stable northern light is ideal; however, east- or west-facing orientations are acceptable provided appropriate shading measures are implemented. It is important to combine desk lighting with indirect illumination to create a visually comfortable lighting environment. Planning should ensure sufficient illuminance suitable for reading and writing tasks.
How should ventilation be planned for a study room?
Considering extended periods of use, an appropriate ventilation strategy is essential. In addition to natural ventilation through operable windows, integration with a continuous 24-hour ventilation system is advisable. This approach is also effective in controlling humidity levels to protect books and paper materials. When combined with air conditioning, it helps maintain a comfortable indoor environment throughout the year.
What design strategies can be employed if a study room is also intended to serve as a guest bedroom?
By incorporating a sofa bed or a storage bench, the space can function as a reading area during regular use and transform into a sleeping area when needed. Additionally, utilizing movable partitions or foldable desks allows for flexible adaptation of the space according to its intended use, resulting in a multifunctional study room.
What considerations should be taken into account when designing a study area as an open space rather than a private room?
It is important to arrange the space to maintain an appropriate sense of distance from family members. When locating the study area in a corner of the living room, using bookshelves or partitions to gently delineate the space can create an environment conducive to concentration. The key is to find a delicate balance that moderately blocks noise and sightlines while avoiding excessive isolation.
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