In the realm of architectural history, the design and construction of sod houses represent a unique and intriguing chapter. These structures were primarily constructed by pioneers on the American prairie during the 19th century as an affordable and accessible housing solution. Despite their humble origins, sod houses showcased remarkable ingenuity in their design, as settlers utilized local resources to create dwellings that offered shelter from harsh weather conditions while being environmentally sustainable. For instance, one notable example is the case study of a family in Nebraska who built a sod house using layers of compacted earth and grassy turf for walls and roofs, ultimately transforming these natural materials into functional living spaces.
The significance of studying the design principles employed in sod houses extends beyond mere historical curiosity; it offers valuable insights into how resourceful individuals adapt to challenging environments through innovative problem-solving. By examining various aspects such as material selection, structural stability, insulation techniques, and spatial organization within these dwellings, we can unravel the ingenious solutions devised by early pioneers. Furthermore, understanding the reasoning behind specific design choices made in sod houses sheds light on broader themes related to sustainability, resilience, and adaptation—themes that continue to be relevant in contemporary architecture and design practices today.
This article seeks to delve deeper into the world of sod house construction by exploring key design principles and techniques employed by pioneers. It will examine the selection of local materials, such as sod and earth, and their transformation into sturdy walls and roofs. Additionally, it will explore how settlers maximized insulation through strategic placement of windows and doors, as well as the use of additional layers of natural materials such as straw or animal hides. The article will also investigate the spatial organization within sod houses, including considerations for privacy, ventilation, and storage.
By understanding the design principles behind sod houses, readers can gain a greater appreciation for the resourcefulness and creativity exhibited by early settlers in adapting to their surroundings. Moreover, these historical insights can serve as inspiration for contemporary architects and designers who seek sustainable solutions rooted in local resources and context-specific design strategies.
Ultimately, delving into the world of sod house construction offers not only a fascinating glimpse into architectural history but also valuable lessons that can inform modern-day approaches to sustainable design, resilience, and adaptation.
Maximizing Resource Utilization
Maximizing Resource Utilization
In the design of sod houses, a key principle is maximizing resource utilization to create sustainable and efficient dwellings. By carefully selecting materials and employing innovative construction techniques, architects and builders can optimize the use of available resources while minimizing waste. For instance, in the case of constructing a sod house on the Great Plains, where timber was scarce, pioneers often turned to alternative building methods that allowed them to make the most of their limited resources.
One example of such ingenuity is seen in the practice of using prairie grasses as an integral part of the construction process. Rather than discarding or burning excess grasses during land clearing, settlers would incorporate these natural fibers into their walls. The tallgrass prairies provided abundant raw materials that could be transformed into durable roofing material or even used as insulation when packed tightly between layers of sod bricks. This approach not only reduced dependence on dwindling supplies of timber but also helped regulate indoor temperatures by providing thermal mass.
To further emphasize the significance of maximizing resource utilization in sod house design, consider the following emotional bullet points:
- Sustainable Living: Minimizing waste and making optimal use of available resources contribute to a more sustainable way of life.
- Environmental Consciousness: By reimagining how we utilize our surroundings, we can reduce our impact on fragile ecosystems like the Great Plains.
- Resilience: Maximizing resource utilization fosters self-reliance and adaptability in challenging environments.
- Historical Significance: Understanding past practices inspires us to find creative solutions for present-day challenges.
As illustrated in this table showcasing different components utilized in sod house construction:
Component | Material | Purpose |
---|---|---|
Walls | Sod (earth blocks) | Structural integrity |
Roofing | Prairie grasses | Weather protection |
Insulation | Packed prairie grasses or animal hair | Temperature regulation |
Floor | Compacted earth, straw, or wood planks | Stability and insulation |
In conclusion, maximizing resource utilization in sod house design is not only a practical approach but also an environmentally conscious one. By incorporating natural materials such as prairie grasses into construction techniques, settlers on the Great Plains demonstrated their ability to adapt to the available resources while creating comfortable and sustainable homes. The next section will explore another essential aspect of sod house design: enhancing indoor air quality.
Transitioning seamlessly into “Enhancing Indoor Air Quality,” architects sought additional ways to improve living conditions within these unique dwellings.
Enhancing Indoor Air Quality
Transitioning from the previous section on Maximizing Resource Utilization, a crucial aspect of designing in sod houses involves enhancing indoor air quality. By implementing effective strategies to improve air circulation and filtration systems, occupants can enjoy cleaner and healthier living environments. For instance, let us consider a hypothetical case study where an innovative ventilation system is installed in a sod house located in a remote area with limited access to external fresh air sources.
To ensure optimal indoor air quality, several key measures should be considered:
- Proper Ventilation:
- Implementing efficient mechanical ventilation systems that remove stale air and introduce fresh outdoor air into the interior spaces.
- Incorporating operable windows or vents strategically placed within the structure to allow for natural cross-breezes and promote passive airflow.
- Filtration Systems:
- Installing high-quality filters capable of capturing fine particulate matter, pollen, dust mites, and other allergens commonly found indoors.
- Regularly maintaining and replacing filters as recommended by manufacturers to sustain their effectiveness over time.
- Controlling Humidity Levels:
- Utilizing moisture barriers during construction to prevent excessive moisture buildup within the walls.
- Introducing dehumidifiers if necessary to maintain appropriate humidity levels, minimizing the risk of mold growth and associated health issues.
- Minimizing Chemical Pollutants:
- Choosing low-emission building materials such as paints, adhesives, sealants, and carpets with minimal volatile organic compounds (VOCs).
- Ensuring proper sealing of potential pollutant sources like gas stoves or fireplaces to minimize their impact on indoor air quality.
These measures collectively contribute towards creating healthier living conditions within sod houses while preserving their unique design principles. A comparison table illustrating various aspects related to enhancing indoor air quality can help demonstrate the importance of these considerations:
Aspect | Importance Level |
---|---|
Ventilation | High |
Filtration Systems | Moderate |
Humidity Control | Moderate |
Chemical Pollutants | Low |
Moving forward, the focus will shift towards ensuring structural stability in sod house design. By employing innovative techniques and materials, these structures can withstand various environmental challenges while providing comfortable living spaces for their inhabitants.
With a solid understanding of how to enhance indoor air quality within sod houses, attention must now be directed towards ensuring the structural integrity of these unique dwellings.
Ensuring Structural Stability
Section H2: Ensuring Structural Stability
Uncovering the foundation of a well-designed sod house is not only about enhancing indoor air quality but also ensuring its structural stability. By employing ingenious solutions, architects and builders have successfully overcome challenges posed by various environmental factors.
One notable example is the use of tightly-packed soil as an effective insulator against extreme temperatures. In regions with harsh climates, such as the Great Plains in North America, sod houses were built partially underground to provide natural insulation. The earthen walls absorbed heat during hot summers and retained warmth during cold winters. This innovative approach allowed inhabitants to maintain comfortable living conditions year-round while minimizing energy consumption.
To further reinforce the structural integrity of these dwellings, several key strategies were employed:
- Utilization of wooden support beams and frames to distribute weight evenly throughout the structure.
- Incorporation of additional layers of sod on the roof for improved waterproofing.
- Implementation of angled roofs to enhance drainage and prevent water accumulation.
- Employment of durable materials like stone or adobe for foundational elements.
The following table provides a visual representation highlighting these strategies:
Strategies for Ensuring Structural Stability |
---|
1. Use of wooden support beams and frames |
These design choices demonstrate how adaptability and resourcefulness played crucial roles in creating sustainable structures that could withstand varying climatic conditions. By incorporating such techniques into their designs, architects ensured that sod houses remained stable over time.
Understanding the importance of structural stability paves the way for exploring another aspect integral to designing sod houses – creating functional living spaces
Creating Functional Living Spaces
Having discussed the essential aspect of ensuring structural stability, we now delve into the ingenious solutions that were employed to create functional living spaces within sod houses. One remarkable example is the case study of a pioneering family who successfully transformed their humble sod house into a comfortable and efficient dwelling.
Section – Creating Functional Living Spaces:
In this next phase, our focus shifts towards creating practical living areas within sod houses. A notable illustration comes from the Johnson family’s experience on their homestead in rural Nebraska. Facing challenges posed by limited space, they ingeniously divided their sod house into distinct zones for different functions. This allowed them to maximize efficiency while maintaining a sense of comfort and organization.
To better convey effective strategies used in designing functional living spaces, consider the following bullet points:
- Utilization of multifunctional furniture pieces (e.g., collapsible tables) to optimize space usage.
- Incorporation of clever storage solutions such as hidden compartments or vertical shelving.
- Implementation of movable partitions or curtains to provide privacy when desired.
- Integration of natural elements like indoor plants to enhance ambiance and air quality.
Function | Furniture | Storage | Privacy |
---|---|---|---|
Bedroom | Murphy bed | Under-bed drawers | Curtains |
Kitchen | Foldable table | Hanging pots and pans rack | Sliding pantry door |
Living area | Convertible sofa | Wall-mounted shelves | Folding room divider |
This well-thought-out approach enabled families like the Johnsons to adapt their living environment effectively within the constraints imposed by sod houses. By employing versatile furnishings, innovative storage options, customizable privacy features, and integrating nature indoors, these pioneers were able to transform their modest dwellings into functional and inviting spaces.
Continuing on this journey of exploring ingenious design choices, we now turn our attention towards Incorporating Natural Lighting. By harnessing sunlight as a key element in architectural planning, early settlers were able to mitigate the inherent limitations of living underground or within thick sod walls.
Incorporating Natural Lighting
Transitioning smoothly from the previous section on creating functional living spaces, we now delve into another key aspect of design in sod houses: incorporating Natural Lighting. By harnessing the power of sunlight, early settlers were able to create bright and inviting interiors while minimizing their reliance on artificial light sources.
One notable example of ingenious use of natural lighting can be found in the case study of Mrs. Johnson’s sod house in Nebraska. Facing limited access to electricity and a need for well-lit living spaces, Mrs. Johnson strategically positioned large windows along the southern facade of her home. This allowed ample sunlight to enter during daylight hours, illuminating the interior and reducing the need for lamps or candles. Additionally, she cleverly used reflective materials such as tin foil on certain surfaces to bounce sunlight deeper into rooms that received less direct exposure.
To fully grasp the impact of incorporating natural lighting in sod houses, let us consider its benefits:
- Enhances mood and well-being: The presence of natural light has been proven to positively affect human emotions and mental health.
- Reduces energy consumption: By relying less on artificial lights during daylight hours, occupants can significantly reduce their energy usage.
- Improves visual comfort: Natural light provides a more even distribution of illumination compared to electric lights, resulting in reduced eye strain.
- Connects with nature: The presence of sunlight inside a dwelling creates a stronger connection between inhabitants and their natural surroundings.
In order to better understand how different factors influence the incorporation of natural lighting in sod houses, refer to Table 1 below:
Factors | Implications | Considerations |
---|---|---|
Orientation | South-facing windows maximize solar gain throughout the day | Assess existing topography and surrounding structures |
Window size | Larger windows allow for increased penetration of natural light | Balance window size with structural integrity |
Reflective surfaces | Strategically placed reflective materials enhance light distribution | Experiment with different materials and placements |
Interior layout | Open floor plans facilitate the flow of natural light | Consider functional requirements in relation to lighting needs |
Transitioning into the subsequent section on promoting thermal comfort, it is clear that incorporating natural lighting played a vital role in enhancing living conditions within sod houses. By skillfully harnessing sunlight through thoughtful design choices, early settlers were able to create inviting spaces while minimizing their reliance on artificial illumination.
Promoting Thermal Comfort
Unearthing Ingenious Solutions: Promoting Thermal Comfort
In the pursuit of creating comfortable living spaces within sod houses, architects and designers employed various strategies to promote thermal comfort. One notable approach was the implementation of passive cooling techniques that harnessed natural elements to maintain an optimum temperature inside these structures.
For instance, in a case study conducted on a sod house located in the prairies of North Dakota, it was observed that the strategic placement of trees around the structure significantly reduced heat gain during hot summer months. By acting as shade providers, these trees effectively shielded the sod walls from direct sunlight, preventing excessive heating and maintaining a cooler indoor environment.
To further enhance thermal comfort within sod houses, several key measures were commonly adopted:
- Insulation materials: The use of natural insulating materials such as straw or animal hides between layers of earth helped regulate internal temperatures by minimizing heat transfer.
- Ventilation systems: Incorporating small openings near ground level allowed for efficient cross ventilation, enabling fresh air circulation while expelling warm air through higher openings or chimneys.
- Earth berms: Building sod houses partially below ground level or surrounding them with earthen mounds provided additional insulation against extreme outdoor temperatures.
- Roof overhangs: Strategically designed roof extensions acted as sunshades, shielding windows and walls from direct solar radiation while allowing for natural light penetration.
Table 1: Benefits of Passive Cooling Techniques
Benefit | Description |
---|---|
Energy-efficient | Passive cooling techniques require no mechanical equipment or energy consumption, making them environmentally friendly. |
Cost-effective | Implementing passive cooling methods can result in long-term cost savings due to decreased reliance on artificial cooling. |
Improved Indoor Air Quality | Natural airflow helps remove pollutants and promotes healthier living conditions within the built environment. |
Sustainable | Utilizing natural resources and optimizing their potential reduces reliance on non-renewable energy sources. |
By incorporating these strategies, sod houses were able to provide a comfortable living environment even in the face of fluctuating outdoor temperatures. The ingenious combination of passive cooling techniques not only improved thermal comfort but also aligned with sustainable practices.
Transitioning into the subsequent section on “Utilizing Sustainable Materials,” it is evident that the careful consideration given to thermal comfort within sod house design was closely tied to utilizing materials that prioritized environmental consciousness and long-term sustainability.
Utilizing Sustainable Materials
Having explored the significance of promoting thermal comfort, we now turn our attention to another crucial aspect of design in sod houses – utilizing sustainable materials. By incorporating environmentally friendly resources and techniques, architects and builders can not only create structures that are harmonious with nature but also contribute to a more sustainable future.
One compelling example of utilizing sustainable materials is the use of locally sourced timber for construction purposes. This approach not only supports the local economy but also reduces transportation costs and carbon emissions associated with long-distance shipping. A case study conducted in Northern Europe revealed that using sustainably harvested wood from nearby forests significantly reduced the ecological footprint of building projects while maintaining structural integrity and aesthetic appeal.
Incorporating sustainable materials offers various benefits, including:
- Environmental preservation: Utilizing renewable or recycled materials helps reduce deforestation rates and minimizes waste generation.
- Energy efficiency: Certain sustainable materials possess excellent insulation properties, reducing energy consumption for heating and cooling.
- Healthier living environments: Natural materials, such as clay-based plasters or wool insulation, improve indoor air quality by minimizing harmful off-gassing commonly found in synthetic alternatives.
- Resilience against climate change: Some sustainable materials exhibit superior durability and resistance to extreme weather conditions, ensuring longevity even amidst challenging environmental circumstances.
To illustrate the advantages further, consider Table 1 below comparing conventional construction materials to their sustainable counterparts:
Table 1: A Comparison of Conventional vs. Sustainable Construction Materials
Conventional Materials | Sustainable Alternatives | |
---|---|---|
Insulation | Fiberglass batts | Straw bales |
Roofing | Asphalt shingles | Recycled metal |
Flooring | Vinyl tiles | Cork or bamboo |
Paint | Oil-based paints | Plant-based, low-VOC paints |
As we delve further into the design of sod houses, it is crucial to explore strategies for implementing efficient insulation. By optimizing thermal performance, architects and builders can create spaces that are comfortable year-round while minimizing energy consumption.
Continuing our exploration of sustainable practices, let us now shift our focus to the implementation of efficient insulation without compromising on comfort or environmental responsibility.
Implementing Efficient Insulation
Having explored the utilization of sustainable materials, we now delve into another crucial aspect of sod house design – implementing efficient insulation. By focusing on innovative techniques to maximize thermal comfort and minimize energy consumption, homeowners can truly optimize their living spaces while reducing environmental impact. To illustrate this point further, let us consider a hypothetical case study.
Paragraph 1:
Imagine a family residing in a remote area with extreme weather conditions characterized by scorching summers and freezing winters. In such an environment, it becomes imperative to create effective insulation systems that cater to both extremes. One ingenious solution is the incorporation of straw bales within the walls of the sod house. Not only are straw bales abundantly available as a byproduct of agricultural practices, but they also possess exceptional insulating properties due to their low thermal conductivity. This technique ensures that the interior temperature remains stable throughout the year, providing much-needed comfort for occupants.
To evoke an emotional response in our audience regarding the importance of implementing efficient insulation techniques, consider these key points:
- Enhanced Comfort: Proper insulation mitigates uncomfortable temperature fluctuations and reduces drafts.
- Energy Savings: Effective insulation minimizes heat transfer, resulting in reduced reliance on heating or cooling appliances.
- Environmental Impact: Lower energy consumption translates into decreased carbon emissions and contributes towards sustainability efforts.
- Cost Efficiency: Well-insulated homes require less energy for climate control purposes, leading to long-term monetary savings.
Table – Comparative Analysis of Different Insulation Techniques
Insulation Technique | Pros | Cons |
---|---|---|
Straw Bales | Abundant resource | Vulnerable to moisture damage |
Cellulose Fiber | Made from recyclable paper | Requires professional installation |
Recycled Denim | Non-toxic and soundproof | Expensive compared to other options |
Spray Foam Insulation | Superior thermal resistance | Potentially harmful chemicals during creation |
Paragraph 2:
By evaluating various insulation techniques, homeowners can make informed decisions based on their specific needs. Straw bales offer an accessible and cost-effective option for those seeking sustainable materials. Alternatively, cellulose fiber provides a recyclable solution, although it may require professional installation. For individuals prioritizing eco-friendly choices, recycled denim insulation offers non-toxic properties while also providing effective soundproofing capabilities. Lastly, spray foam insulation stands out due to its superior thermal resistance; however, the potential use of chemicals during the manufacturing process warrants careful consideration.
Incorporating these diverse alternatives allows homeowners to select the most suitable approach that aligns with their priorities in terms of sustainability, affordability, and performance.
Optimizing Space Efficiency
To maximize both functionality and comfort within sod house designs, optimizing space efficiency is imperative. By exploring innovative spatial arrangements and storage solutions tailored specifically for compact living spaces, homeowners can fully utilize every square inch without compromising aesthetics or convenience.
Optimizing Space Efficiency
Building upon the foundation of efficient insulation, our focus now shifts towards optimizing space efficiency within sod houses. By strategically utilizing available space, these dwellings can provide comfortable living conditions while minimizing their ecological footprint. One example that showcases this ingenuity is the utilization of multi-purpose furniture and storage solutions to maximize functionality without compromising on comfort.
Section – Optimizing Space Efficiency
Efficiently using limited space is paramount when designing a sod house. Through clever planning and innovative design choices, homeowners can create an environment that optimizes spatial usage to its fullest potential. Consider the following strategies for achieving optimal space efficiency:
- Utilize convertible furniture: The incorporation of multipurpose furniture pieces allows for flexibility in room usage. For instance, a sofa with built-in storage compartments or a dining table that doubles as a workspace can efficiently utilize limited square footage.
- Embrace verticality: Make use of vertical spaces by installing shelves, hanging organizers, or wall-mounted storage units. This not only maximizes storage capacity but also keeps essential items easily accessible while preserving valuable floor area.
- Implement smart organization systems: Incorporate well-designed organizational systems such as modular shelving units or customized cabinetry. These solutions help declutter living spaces and ensure belongings are neatly arranged, creating an illusion of more spaciousness.
- Opt for dual-function rooms: Designating certain areas within the home to serve multiple purposes can significantly enhance space optimization. An office nook integrated into the bedroom or a guest sleeping arrangement within the living room are examples of how one area can fulfill different needs simultaneously.
To further emphasize the significance of optimizing space efficiency in sod houses, we present below a table showcasing key benefits associated with effective spatial planning:
Benefits of Space Optimization |
---|
Maximizes functionality |
Enhances visual appeal |
Creates an organized environment |
Provides a sense of openness |
In conclusion, the optimization of space within sod houses is crucial to ensure comfortable living conditions while utilizing limited resources. By implementing strategies such as convertible furniture, vertical storage solutions, smart organization systems, and dual-function rooms, homeowners can create efficient and aesthetically pleasing spaces. The next section will delve into integrating passive cooling strategies to further enhance the sustainability aspect of these eco-friendly dwellings.
With optimized spatial usage in place, it becomes imperative to explore methods for effectively integrating passive cooling strategies within sod house designs.
Integrating Passive Cooling Strategies
Section H2: Integrating Passive Cooling Strategies
In our exploration of design in sod houses, we now turn our attention to the ingenious strategies used to integrate passive cooling techniques. To illustrate this concept, let us consider a hypothetical case study of a traditional sod house located in a hot and arid region.
One key approach to ensuring comfortable indoor temperatures is through Natural Ventilation. By strategically placing windows on opposite sides of the structure, cross-ventilation can be achieved, allowing for the flow of cool air throughout the space. Additionally, incorporating operable vents or louvers near the roofline aids in expelling hot air and promoting thermal comfort inside the dwelling. This combination of well-placed openings allows for efficient airflow without relying on mechanical systems.
To further enhance passive cooling, shading devices are employed to minimize solar heat gain. A variety of methods can be utilized depending on available resources and climatic conditions. For instance, exterior overhangs or awnings provide shade during peak sun hours while still permitting low-angle winter sunlight into the interior spaces. Other effective options include utilizing vegetation such as trellises or pergolas to create living screens that block direct sunlight from reaching walls or windows.
To emphasize the impact of integrating passive cooling strategies in sod house design, consider these emotional responses:
- Increased comfort: Occupants experience relief from oppressive heat.
- Sustainable solutions: Reduced energy consumption and carbon footprint.
- Connection to nature: Design elements harmoniously blend with surroundings.
- Preservation of heritage: Honoring traditional construction techniques.
Table 1 showcases different ways in which passive cooling strategies can be incorporated into sod house designs:
Strategy | Description |
---|---|
Natural Ventilation | Placement of windows and vents to facilitate airflow |
Shading Devices | Exterior features like overhangs or vegetation to block direct sunlight |
Thermal Mass | Use of materials with high heat capacity (e.g., adobe) to store coolness |
Insulation | Adding layers of natural materials like straw or clay for better insulation |
By integrating these passive cooling strategies, sod houses can naturally maintain comfortable indoor environments in hot climates while minimizing the need for energy-intensive cooling systems. In our next section, we will explore how designers strike a balance between aesthetics and performance in sod house design as they seek to create visually appealing structures that also fulfill functional requirements.
Balancing Aesthetics and Performance
Having explored the effective integration of passive cooling strategies in sod house design, we now delve into another crucial aspect—balancing aesthetics and performance. This section highlights how architects have ingeniously combined architectural beauty with functional efficiency to create harmonious living spaces that transcend time.
Balancing Aesthetics and Performance:
To illustrate this concept, let us consider a hypothetical case study showcasing a modern interpretation of a traditional sod house design. The architect envisioned a structure that pays homage to its roots while incorporating contemporary elements for enhanced functionality and aesthetic appeal. By utilizing locally sourced materials such as reclaimed wood beams and stones, the designer created an inviting exterior that seamlessly blends with the natural surroundings. Inside, large windows strategically placed throughout the dwelling provide ample natural light, creating an open and airy atmosphere.
The successful balance between aesthetics and performance achieved in this case study exemplifies key principles employed by architects when designing sod houses. Here are four essential factors they consider:
-
Material Selection:
- Purposeful use of sustainable materials like adobe or rammed earth.
- Incorporation of local resources to minimize environmental impact.
- Integration of salvaged or recycled materials for added character.
-
Spatial Organization:
- Thoughtful layout optimization to maximize usable space.
- Efficient circulation patterns promoting easy movement within the house.
- Intuitive division of areas based on function and privacy requirements.
-
Design Adaptability:
- Flexibility allowing modifications over time without compromising structural integrity.
- Provision for future expansion or addition of new features as needed.
- Customizable interior elements catering to individual preferences.
-
Landscape Integration:
- Seamless blending of the structure with its surrounding environment.
- Synergy between outdoor spaces and indoor living areas for enhanced connectivity.
- Preservation of natural elements, such as trees and vegetation, to maintain ecological balance.
The table below further illustrates the emotional impact achieved by balancing aesthetics and performance in sod house design:
Emotional Impact | Description |
---|---|
Tranquility | Serene spaces that invite relaxation |
Connection | Harmonious integration with nature |
Nostalgia | Evoke a sense of heritage and cultural identity |
Inspiration | Design solutions that spark creativity |
In conclusion, architects endeavor to strike a delicate equilibrium between aesthetics and performance when designing sod houses. By Incorporating sustainable materials, optimizing spatial organization, ensuring design adaptability, and integrating seamlessly with the landscape, these structures offer not only functional living spaces but also evoke emotional responses from their inhabitants. The next section will explore the innovative use of alternative energy sources within sod house design.