Aapki Tapri (The Cafe)
Over time, we have recognized the necessity for a kitchen cum cafe. On regular days, the primary kitchen is actively engaged in preparing meals for 10-15 individuals daily, and this demand escalates during workshop periods, accommodating approximately 60-70 people. Given the consistent high-capacity utilization of the kitchen, it became important to create cafe space. This addition ensures that during busy periods, the kitchen can effectively meet the demand. We decided to establish a separate structure that serves a dual purpose – providing a space for the resident team to cook for themselves and, in the future, to function as a cafe during workshops.
CONSIDERATIONS
– In order to optimize space utilization, our goal was to design a structure that occupies minimal space and avoids creating a blocky appearance.
– We aimed for the structure that is typical Geeli Mitti fashion, characterized by organic shapes.
– Given the mountain view from the space, our objective was to construct the structure in a way that preserves and does not obstruct the scenic view.
– Consistent with the essence of Geeli Mitti structures, every space needs to serve as a demonstration of new materials or techniques.
SOLUTIONS / DECISIONS
– We opted to utilize bamboo as the primary construction material for this structure to give the feeling of lightness to the structure. This choice was made to avoid a bulky appearance in the given space.
– Considering the triangular shape of our land, we decided on a triangular structure to blend with the land’s geometry.
– To seamlessly blend the structure with the mountain landscape and prevent obstruction, we mirrored the form followed by landscape of the mountains. We always try to marry the roof to the surrounding landscape.
– For every structure we try to use different techniques to that it can be demonstrated and easy for people to understand different techniques. So we decided to do bamboo workshops that will demonstrate two different types ways with working with bamboo. “The cafe” will exemplify modern bamboo construction methods, showcasing joints and the nut-and-bolt system. It showcases modern global bamboo construction trends. On the other hand, “The Pavilion” will demonstrate traditional bamboo joineries, relying on lashing techniques without the use of nuts and bolts. This traditional approach not only provides durability but also represents the authentic way of bamboo construction.
STRUCTURAL DETAILS
The primary building materials utilized in this structure consist of bamboo, mud, and lime. Bamboo, due to its high tensile strength, is well-suited for constructing columns and beams. However, it is prone to moisture absorption through capillary action, leading to swelling, warping, or decay if not properly treated or shielded. The roof requires water and UV resistance, but bamboo does not meet these criteria. Considering this it is a stupid idea, as bamboo is not intended for such a purpose. A flattened bamboo roof has been created for demonstration purposes, given that this location serves as both a research and training centre but we never recommend it specially in high rainfall areas. Consequently, it is essential to implement effective preservation methods or protection measures to extend the lifespan and enhance the performance of bamboo in construction.
FOUNDATION
For the foundation, a 3-foot-deep hole is excavated, followed by a 6-inch layer of gravel tamped with a layer of limecrete to create a stable and water-resistant base. The lime serves as a repellent material, offering protection against insects. Given bamboo’s susceptibility to capillary action, this foundation design ensures additional protection for the bamboo. A PVC pipe is then inserted into the hole within which bamboo i.e. has been placed, providing a protective enclosure for the bamboo. The pipe is subsequently filled with limecrete to hold the bamboo effectively, ensuring a durable and well-protected foundation.
COLUMN AND BEAM
To establish vertical support for the structure, a bunching system comprising 3 to 4 Dendrocalamus asper are used and are strategically implemented at each corner, effectively serving as columns and gives overall structural strength.
Lidi bundles, crafted from eight split bamboos sourced from Dendrocalamus asper, serve as the primary beams. By staggering the meeting points and securing them with ties, this construction method not only imparts remarkable strength but also facilitates long spans and offers exceptional flexibility.
Fish mouth joinery is a traditional technique which uses bamboo’s intrinsic properties by evenly distributing loads. This joinery method involves shaping the ends of bamboo poles to resemble the open mouth of a fish, allowing them to interlock with one another seamlessly. The intricate design of the joint enhances the structural integrity and stability of the overall bamboo structure.
The beam and column in this structure are joined using fish mouth joinery, creating a secure connection. To enhance compressive strength, a J-bolt system is used. In this system, a bolt is affixed to the column, and the J-shaped section extending from the beam securely attaches to this bolt. To accommodate the absence of a top surface on the lidi bundle, a metal plate is securely attached to the J-bolt system. This design not only provides additional support for column compression but also introduces tension, contributing to the overall strengthening of structure.
ROOF
Given the curvilinear nature of the structure, flexibility in the purlins is essential. To meet this requirement, all the purlins consist of four split bamboo. This is done, as bamboo provides not only inherent strength but also natural flexibility, allowing the structure to integrate curves and bends while maintaining structural integrity
For the roofing, Dendrocalamus Giganteus bamboo, is utilized in the form of flattened bamboo. This involves processing the bamboo into uniform sections with a consistent thickness and width, creating a structured surface for roofing applications. The flattened bamboo sections are arranged and affixed to the roof structure.
To enhance the roofing system’s durability and weather resistance, a layer of bitumen waterproofing is applied. Following the bitumen layer, another set of flattened bamboo is applied, continuing the use of this processed bamboo material. This dual layer of flattened bamboo provides additional structural support, reinforcing the roofing system. The choice of giganteus bamboo, known for its size and strength, contributes to the overall strength of the roofing construction.
BUILT STRUCTURE
The structure is made from wattle and daub method. This is an ancient and traditional technique used for constructing walls and buildings. In this method flexible strips of bamboo are woven into a lattice or framework. This lattice is known as wattle. The wattle is usually created by interweaving strips horizontally and vertically to form a sturdy lattice structure. The daub made of mud is then applied to the wattle lattice, covering the entire surface. It is pressed into the gaps in the wattle to create a solid and cohesive wall. After the final layer has dried and set, the surface may be further smoothed or coated to improve durability and appearance.
The serving counter side is adorned with a table made of natural wood, serving as a visually appealing and functional tabletop. This wooden surface is supported by three sturdy giganteus bamboos, anchored on a foundation of gravel tamping. This side wall is adorned with a carefully crafted wall checks pattern, serving both functional and aesthetic purposes. The pattern is elegantly plastered with polished clay plaster, while the darker sections receive a finishing touch of linseed oil. This meticulous combination results in a visually appealing and textured surface.
The cafe’s entrance exhibits a layered finished, starting with a base layer of ‘thappi’ plaster followed by an application of ‘lohi.’ The decorative sunflower motif elegantly highlighted with lime plaster work, adding a touch of artistry to the overall design.
In the built-in structure, a designated wall serves as an informative exhibit showcasing a diverse range of lime plastering techniques for comprehensive understanding. The featured types include – Clay Plaster, Polished Clay Plaster, Lime and Clay Burnished, Thappi, Lime Wash, Lohi, Venetian Plaster, Araish, Tadelakt.
This display offers a visual overview, allowing viewers to explore and understand the distinctive characteristics of each lime plastering method. Each technique contributes to the wall’s unique texture and appearance, reflecting the versatility and artistry inherent in lime plaster applications.
