Concrete is the world’s most widely used construction material. Cement production accounts for 5% of man made carbon dioxide emissions produced globally. In the era of climate change, this has got scientists thinking and rethinking concrete.
A team of scientists in the UK have come up with a new concrete formula that can actually trap greenhouse gasses. Additionally, this new formula of concrete can self-seal cracks as they form. The secret to this new concrete that is being developed at the University of Exeter, is the introduction of microscopic flakes of graphene. Graphene is one of the world’s strongest materials. With the added graphene, the concrete compound is actually stronger than regular concrete. Because it is stronger, less material would need to be used, opening up possibilities for new designs, and overall reducing the amount of materials needed for a given structure.
This new “green” concrete is also more elastic and more resistant to water. This makes it ideal for building in earthquake or flood zones. The new compound can conduct electricity, opening the possibility to use it to heat roads or walls to melt snow and ice.
Although the green concrete shows promise in many areas of design and construction, it is at the moment costly to produce. Too costly to become viable replacement for the old stuff. Also, it will likely undergo years more of study to determine the parameters of safe useage, and any potential health risks. This article goes into detail about graphene-concrete.
In a series of independent studies, San Francisco has consistently earned top marks for being environmentally friendly, ranking in the top three (with Portland and Seattle), often taking the the top spot.
Being eco-conscious can be difficult to define, and depending who is conducting the study the parameters may vary. One key factor is per capita public transit ridership. New York City ranks #1, with San Francisco coming in at #2. Addiotionally San Francisco ranks very high for bike ridership with nearly 50,000 weekday commuters riding bikes. In 2017, 14 miles of bikeways were added or upgraded.
For recycling and carbon footprint, San Francisco again ranked in the top three along with Seattle and Portland. In this category San Francisco edged out the other contenders due to voter awareness, participation,and routinely voting for aggressive green programs and renewable energy programs. San Francisco diverts 70 of its waste due to mandatory recycling and composting.
Is the sustainable food category San Francisco again earned top ranking. With the farm to table movement, veganism, and grocery stores which feature and support sustainable practices, San Francisco has become known as an epicenter for healthy dining options. It is also worth noting that San Francisco residents on average consume less than half compared to the rest of the state.
With its green and open spaces, myriad hiking and biking trails and coastline, San Francisco is a great place to be green.
Channel Lumber played an integral role in the construction of the new Eastern Span of the Bay Bridge. The bridge connects San Francisco to the East bay, with its route passing over Yerba Buena Island.
The Bay Bridge has been an integral of bay area transportation since it opened in 1933. As early as the 1970’s, it was known to need a seismic retrofit, and when a portion of the upper deck collapsed during the Loma Pietra earthquake in 1989, a plan was put into action.
It was discovered that the retrofit would cost nearly as much as a new bridge, so that plan was abandoned and replaced with plans for a new eastern span of the Bay Bridge. There was disagreement over the design of the new bridge, and finally a contest was held, narrowing the field down to four semi-finalists, the winner chosen from there. The winning design was the most expensive for it could not be self supporting during construction, and thus required a second bridge and work deck to be built beneath the bridge in progress.
The construction required significant concrete forms, lumber, products, services and delivery provided by Channel Lumber.
Today the bridge is safe, and fully functional handling about 240,000 cars per day.
Have you ever been stopped under an overpass or bridge and noticed that the underside of the structure looked like plywood?
Recently during my commute I was inching along under a freeway overpass project that Channel Lumber “just happened” to be supplying the form lumber and plywood on. While no one wants to be creeping in traffic, it was a great opportunity to be reminded that virtually everything made out of concrete or cement is really made out of lumber and form panels first.
For over 5 decades Channel Lumber has been relied upon as the experts in forming lumber and plywood. Channel Lumber continues to be THE leader in this important part of urban renewal and infrastructure expansion and improvement for most of Northern California.
Channel Lumber carries the most expansive line of concrete form panels and heavy timbers in the greater Bay Area and has a delivery fleet that is equally impressive to service this important segment of the construction industry.
Please contact us through our website or call (510) 234-0233 with any inquires.