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Construction is conventionally a carbon-intensive industry – especially in a place like Brooklyn where most homes, coffee shops, book stores and restaurants are built primarily with concrete, mortar, brick and stone. Some degree of greenhouse gas emission is inherent in the production of all construction materials, but none more so than the cement which [...] An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards, so understanding the electrical characteristics of your LED or array is critical in selecting or designing a driver circuit. Drivers should be current-regulated (deliver a [...] One thing brownstones have in abundance are bricks. And I keep seeing dumpsters full of them. It is heartbreaking for me. These are beautiful bricks, a hundred years old, with character and texture. Here is one job site where they knocked down the whole building. There were thousands of perfect bricks. The [...] This is more a technical point but something worth considering when using materials. For example the “problem” with recycled cellulose is that it is degraded. There is a green term for this but I forgot it. Basically you are taking a higher purpose material – newspaper that is used to transport knowledge – and [...] |
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