The use of straw as a material of building materials is not a new thing, besides light and environmentally friendly, straw also has a very affordable price from all circles. straw houses can absorb heat when the weather is hot and can absorb the cold when winter
Vulnerability to fire
This is still a debate. Many construction experts have tested and proven that the straw house tested is resistant to fire risk. However, vulnerability to fires is still considerable during the construction process.
Fungus and insect problems
Because the core material is straw, the house is more vulnerable to fungal and insect attacks. This is because the air gap inside the wall more, compared with wood or brick material.
Reduced room size
Because the straw house wall reaches a thickness of 46 cm, then the size of the room can be reduced. The rooms are usually sized 5m X 5m to 4.5m X 4.5m. Reduced room size certainly also affects the efficiency of space usage.
Easy to crack
If not applied properly, cracks can occur wall of the house. This happens because of a pile of stray beams that are not tight, especially on difficult parts such as near door frames, windows, and ceilings.
The difficulty of plaster process
Coating a haystack with plaster is not an easy matter. If you do not do it to the maximum, then this house can really look like a haystack: filamentous and messy.
Straw houses that are made may be thousands of times stronger.
Straw house measuring 4.2 x 4.2 meters, complete with a foundation of gravel and plaster walls of clay, not just wind resistance. In an experiment held on a shake table by Network for Earthquake Engineering Simulation Consortium, Inc. (NEES) University of Nevada, Reno, the house is able to withstand shocks or accelerations that are 200 percent stronger than those recorded in the Northridge, California earthquake, with a magnitude of 6.7. The earth acceleration in the 1994 earthquake was recorded as the largest in the world.
The wobble and jolt of a 82-ton high rocker that simulates an earthquake can not drown out the house. The straw bales proved capable of absorbing earthquake energy. After a series of seven tests that got stronger, in the final test the full strength of the straw house shook and rocked great, cracked in the connection and created a cloud of dust and straw, but the house stood still.
utilizing bales of hay as a load-bearing component and structure, not just a barrier or insulation wall. The house shows a very good performance and lasts from 0.82 g (0.82 times the acceleration of gravity) and twice the acceleration of the Northridge earthquake. "
The home of the haystack was first built in the early 20th century in the Sandhills, Nebraska, United States, because wood is difficult to obtain in the area.
Now straw bales house has been used in various places in the world, especially with the rise of environmentally friendly movement. This type of house is also fireproof because its thick density does not support burning. "However, all those bales of hay houses have poles and skeletons to support and rely on energy-efficient materials, trained labor and complicated machinery so that the price is unaffordable for the poor.
Unlike the general design, the pile of straw as a material supporters of the house, not just retain the heat of the sun and keep the warmth of the house in the winter. "The cost of straw houses is only half the cost of conventional earthquake-resistant construction Materials used, such as clay, soil, straw, and gravel To create solid and uniform hay bales, make a small compressor box of steel. solidify it, add straw, stomp again, and end up wearing a standard hand jack to compact the bales.
The size of the bales produced with this compressor box is not as wide as the straw blocks used in ordinary straw houses. The foundations of gravel pockets and fish nets as reinforcement of hay bales are also new innovations, filling used vegetable bags with pebbles such as sandbags for the foundations of the house, their pouches lined with clay and cement dough. The technology is as low as possible using affordable materials.
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