Sustainability

“BSB” is the abbreviation for BROAD sustainable building (factory-made). Its sustainability is derived from 8 aspects: earthquake resistance, energy conservation, air purification, durability, material saving, recyclable construction materials, construction materials free of formaldehyde, lead, radiation, asbestos and no construction sewage, dust or wastes. BSB has accomplished the extremity of these 8 aspects that today’s human technologies can ever imagine.

9 Magnitude Earthquake Resistance

BROAD was a central air conditioning manufacturer who exported its products to over 70 countries. We developed sustainable buildings due to Wenchuan Earthquake in 2008. One year since the earthquake, a team of 300 BROAD R & D engineers has done hundreds of testing, and then invented integrated earthquake-resistance technology of “steel structure + diagonal bracing + light weight”. China Academy of Building Research conducted earthquake resistance tests for 7- storey and 30-storey sustainable building simulators scaled at 1:4 & 1:10, and accurately verified that earthquake resistance of BROAD Sustainable Building is 3~12 times higher than that of conventional buildings in the world (Magnitude 6~7, 0.05~0.12g on average; Magnitude 8, 0.22g highest). (See details in Earthquake Resistance Comparison List, test report & video documentary)

5X More Energy Efficiency

BSBs adopt at least 30 different energy-saving technologies. Ordinary people can understand thick thermal insulation of exterior wall & roof, multi-paned windows, external solar shading, heat recovery fresh air, LED lighting, power generation by elevator descending & water-saving toilets.

Most countries in cold areas adopt 10cm thermal insulation & double-paned windows, whereas BSBs adopt 35 cm thermal insulation and 5-paned windows; in warm winter and hot summer areas as well as torrid areas, most countries use only 3 cm thermal insulation or no thermal insulation at all, whereas BSBs adopt 15 cm and 3 or 4-paned windows, which make BSBs like a sleeping bag in winter and a cooler in summer. Another significant energy-saving technology of BSB comes from BROAD-invented heat recovery fresh air system. By exchanging heat between outdoor fresh air and indoor exhaust air, it recovers 70%~90% of energy and ensures extreme freshness of the indoor air of BSBs with little energy loss. If we convert the HVAC energy consumption of buildings around the world into oil, it equals 35~70 L/m2a, whereas BSBs is 7~12 L/m2a, which is 5 times more energy efficient. (See details in Energy Conservation Comparison List, and energy metering for each BSB is available for your check)

20X Purer Air

Air purification is the most crucial technology to each household. For it is closely related to people's life expectancy and various kinds of human diseases. WHO certifies that 68% of human diseases are related to indoor air pollution. However, the value of air purification can be ignored most easily, because air pollution is invisible to naked eyes. We install air quality detectors in each room, residents can check the indoor PM (PM0.3, PM2.5 and PM10), formaldehyde and CO2 level at any time and can at the same time compare with the outdoor PM. In common people’s opinion, this detector seems to be so expensive that a public debate needs to be held on whether a country should invest a few sets of PM2.5 monitoring devices for each city. But BROAD installs a detector in every room. It’s definitely a technological revolution for the miniaturization and cost-lowering R & D process, which is like putting a building-like computer some decades ago into a small cellular phone today.

Another challenge is how to actualize "super filtration ". At present, for the whole world, only IT chip assembly lines and surgical operating rooms are using “super filtration” equipment that is even more costly than the building itself. Nevertheless, BROAD invented a low-cost “super filtration” technology and integrated it into the heat recovery fresh air machine. It is a combined system with 3–stage filters. The first stage adopts the traditional coarse filter, collecting big particles; the second stage utilizes BROAD-invented "electrostatic cleaner", following the principle of "positive attracts negative” to filtrate 98% of PM0.3, PM2.5 & PM10, and then the remaining PM is filtrated by expensive "HEPA filters". The final air filtration efficiency can be as high as 99.8%. When the fresh air is completely purified, PM can only be brought in by people from outside. Therefore, indoor air is at least 20 times purer than outdoor air (See details in Air Quality Comparison List, and air quality monitoring for each room of BSB is available for your check).

Factory Made

BSB is the most profound innovation in human history. It has broken all the preconceived concepts of people in all aspects from revolution scope to innovation profundity, integration intensity of resources to classification density of information, architectural industry mode to real estate consumption mode. The most revolutionary element about BSB is its construction mode: a 3.9×15.6m “main board” including flooring and ceiling, embedded shafts of ventilation, water supply & drainage, electricity and lighting. All needed pillars, diagonal bracings, doors, windows, walls and even sanitary & kitchen wares for the room installation are placed on main board for factory shipment. One truck can carry 120m2 main boards and then deliver them to the construction site to be hoisted in installation place. What all workers need to do is just screwing bolts, painting……Such a high-efficiency construction mode makes on-site installation only account for 7% of the total construction hours. Therefore, BSB can be 93% factory-made, whereas the current world’s highest is only 40%.

Amazing

When hundreds of millions of people were amazed at the video of “30-storey built in 360 hours ” in the second week of 2012, most of them were still not aware of the more amazing figures hidden behind the building in the video:

BSB is rewriting human history.