Overarch temporary agriculture shelter modules

Transcription

1 Overarch temporary agriculture shelter modules 1.1 Contact Information Krista Smith North Carolina State University NC State University College of Design Campus Box Raleigh, NC USA 1.2 Submitting Category Student Use of AutoDesk s Fusion360 Use of Aluminum

2 2 Product Title, Description, and Image My design requirements were to utilize recycled agriculture plastic, reduce assembly time, reduce repair costs, and increase product life. Maintaince is low cost and easy with the modular design. A separate tarp for each section prevents the spread of any tears that could compromise goods stored inside. The tarps are made of recycled agricultural low density polyethylene. Self locking aluminum frames make assembly a one person job. After securing the ground screws the user simply pushes the frame up to its vertical position and the locks slide into place. Assembly is quick and simple. After initially building each section, Overarch can be assembled in half the time of traditional shelters. Simple ties to the ground screws secure the tarp to hold it tight to the frame.

3 3 Reutilization Cycle and Business Model Agriculture Plastics Plastic agriculture products are primarily LDPE, and polypropylene. There is a very small market for these recycled plastics due to dirt and exposure to chemicals. Overarch can be used for a variety of purposes such as hay or wood storage, livestock shelters, and equipment storage. Utilization Collection of Agriculture Plastics LDPE and polypropylene agriculture waste is collected through recycle centers. Processing of Recycled Materials Collected materials are cleaned, and processed into pellets for reuse. Collection is arranged from both recycling centers and farms themselves. A give-back program rewards customers for sending us thier damaged parts for reycling in return for a discounted replacement part. The all aluminum frame allows for recycling even severely damaged frames. Overarch parts break down into an assembly of pipes, bolts, and tarps for compact shipping. Shipping and Packaging Overarch is composed of many offthe-shelf parts to prevent unnecessary mold production. The remaining components are made through extrusion, casting, and weaving processes. Production of Parts

4 4 Overview, Material Utilization & Material Health Material Health Recycled LDPE from agriculture plastic products, such as plastic mulching, composes the tarp strip over each arch. Though it has been deemed safe by the Consmer Product Safety Commission, possible or percieved pesticide and chemical residue requires this material to be used outdoors in such a way that does not require habitual skin contact. LDPE can be recycled more than once with the introduction of new material. NFPA Rating: 1 (flammability) Recycled Polypropylene also sourced from agricultural plastic products and is used to create the rigid circular snaps that hold each tarp strip to the arch frame as well as the teather strings. Like LDPE this material should be used outdoors and without habitual skin contact. This material can also be reycled mulitple times with the introduction of small amounts of new material. NFPA Rating: 1 (flammability) Aluminum is used for the frame of each arch. It is strong enough to withstand wind force and is easily recycled. NFPA Rating: 0 Material Reutilization ( 90% * 1 ) + ( 80% * 2 ) 3 = 83 90% Recycled Content is estimated from the use of recycled aluminum, polypropylene, and LDPE. The 10% not recycled material is due to added virgin LDPE to maintain properties, and some steel assembly bolts. 80% Recyclable Content includes the entire frame and tarps. The missing 20% accounts for assembly bolts, and tarps that have been too damaged by solar exposure to be recycled.

5 5 Designed with AutoDesk Fusion 360 Fusion 360 was used as the primary modeling tool as it was quick and accurate. Fusion 360 s flexible timeline allowed quick ideation models to be refined into final models. This supports Crade to Cradle design as it is simple to go back and modify the product to use minimal materials. Additionally, the simulation tools are perfectly tailored for a rough test of material strength and predicting potential points of failure. Having a quick general idea of problem spots helps to design a product that will have a longer life and save time later when the product is being finalized for production. This design s process began with ideation sketches, but quickly moved to rough pipe models in Fusion. Physically modeling a product such as this is expensive and time consuming. Fusion offered an alternative modeling process in a more financially and environmentally conscious way. The use of Fusion s joint and contact set tools gave a very realistic undertsanding of what designs would work best.