3.Proposed Solution:

use novel and intuitive Truss-Ties to quickly and affordably build emergency shelters from debris. Then, once building materials can be delivered, use Truss-Ties to build transitional and durable shelters, too. I call this the evolutionary shelter system. The evolutionary Shelter System provides victims of natural disasters with an appropriate living place at each moment of their journey to recovery.

Truss-Tie is a patent-pending multi-direction zip-ties to securely fasten object and materials for building Truss structure simply, easily, and rapidly.


This invention is the U.S patent pending. (Serial No. 15/334,794; filed October 26, 2016)


Evolutionary Shelter System




[Design Proposal for Emergency Shelter for the Step One]

The victims of the natural disaster utilize the abundant debris from damaged buildings on the site along with the Truss-Ties. For instance, wood members can be used for structures inside the shelter, and after building them, any flat material or fabrics such as panels, doors, blankets, or curtains can be used for walls and ceilings to cover up the structures. This reduces the time that it takes to deliver and build a shelter, decreasing the cost and the weight of the material of the shelter. It is a practical way to resolve problems realistically.


: Distribute Truss-Tie Kits so People can quickly build their own Emergency shelters from debris

The first step is to provide survivors with Truss-Tie kits, including 16-Truss-Ties and a manual printed on a plastic sheet that immediately allows disaster survivors the ability to build their own shelters  quickly and easily.


Debris is a very abundant building material on-site, and it can be a good resource for creating emergency shelters.


The size of the Truss-Kit is only 3x3x6 (inch), therefore many of the kits can be stored in the public offices or institutes such as schools, fire stations, community service centers, etc. In addition, the compact feature of the kit allows supporters to deliver large amount of the kits immediately and readily through any transportation method from a motorbike or cars on the ground to cargo airplanes by airdrop.


Handling of the Truss-Tie is very easy, so the victim can build their emergency shelter conveniently without any tools such as nails, hammers, etc. Finally, the Truss-Tie can be very low-cost. Therefore, almost all individuals or organizations such as a district office, community center, school, etc,

How to use the Truss-Tie : a Demonstration of the Prototype

[Instruction of Building Emergency Shelter]

[Significant Features of Truss-Tie]


: delivering prefabricated building materials

Even though the emergency shelter fulfills their basic needs, such as shelter from rain, wind, cold, direct sunlight, etc., it is cramped, shabby-looking and does not provide any space for relaxation and rest. In order to rebuild a semblance of normality in the community, even before infrastructure is repaired, spaces in which people are able to work indoors, relax and undertake recreation are essential.


The Evol-Shelter Sys—which pairs Truss-Ties with a bundle of precut, prenotched lumber—can speed up the supporting process, and allow communities to extend their shelters as needed. Trusty-Shelters in the second phase play a role as T-shelter to mitigate the problems of longer-term homelessness with a minimum essential building materials which could be facilitated for building ‘progressive shelters’ and ‘core shelters’ at the third step. This feature would be able to save additional cost of building the advanced shelter. Also, because the Trusty-shelter can be combined with Truss-Tie, the shelter can be built quickly and simply on account of Truss-Tie's ease of use.


As well, the Truss-Ties on the shelter could be easily broken by cutting tool such as scissors or nipper, so the T-shelter can be simply dismantled if necessary. This feature might be useful for ‘nomadic’ victims who should move to other area often for many issues. For example, in case of survivors in Haiti, survivors who have not land ownership could not T-shelter for legal issue regarding the occupation. Therefore, they could only use tents for staying temporary and being portable.

The line drawings about a transitional shelter show a number of prefabricated wood beams that are to be connected with this proposed Truss-Tie method. We recognize that if the cost of prefabrication is exerted, other conventional fastening methods, such as wood screws or machine bolts can be used retaining the ability to assemble and disassemble  the structure. The proposed Truss-Tie method, however, may have certain advantages over the conventional methods. More study is needed in order to fully quantify these.

The joint method for the Trusty-Shelter is primarily used for lap joints. The structure makes the T-shelter’s joints combined strongly. The lap joints on the member of the Trusty-shelter have holes that the Truss-Tie can tie up through, which makes the joints much more secure. This way, the joint structure also allows the floor of the Trusty-Shelter to be lifted up from the ground about two feet, which keeps the inside space dry from the wet ground when it is raining outside. Providing more stable, comfortable, and spacious shelter could help victims overcome the damage from the disaster and return their lives.

In addition, T-shelter is modularized to respect victims’ privacy. In the research, almost every previous T-shelter tends to put all family members into the same place together. In this situation, they cannot have their privacy and they experience inconvenience. The Trusty-shelter is planned for space for one or two persons for their privacy. However, if they want to live together, the T-shelter can be combined with another due to the modular feature, so their living space can be expanded and it may be shared with all residents. In this way, the T-shelter may grow to be a community.


: upgrading shelter to progressive shelter and core shelter

As the third step, survivors are provided with substantial materials for upgrading the T-shelter to allow them to stay in a more durable space. Trusty-shelter supplies members/components that have multiple slots allowing the frame to be assembled and dismantled easily with Truss-Ties. This also allows damaged components to be replaced easily and improvements to be made on the initial shelter at a later date. Ultimately, using the Trusty-Shelter framing materials helps residents transition to a structure that uses more stable and more permanent siding materials and fasteners such as bolts, nuts, plywood, etc. The size of the holes for Truss-Ties on the wood frames can be fitted with the 3/8 inch diameter sized bolts and thus the joint part can be made much more durable. Plywood can also be attached on the frame as long as you drill holes fitting with the holes on the frames. Therefore, the structure might evolve into a much more durable and secure structure, combining Trusty-shelter components with plywood and metal joints to become a home.