May 2018 - TRUEGRID Pavers
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What can the little guy do to help protect against flooding?

Flooding is top of mind across the country with the extreme weather patterns over the last few years. It seems that 500-year floods come every few years now. As urban sprawl increases, the ability to absorb the impact of heavy rain events worsens dramatically. More buildings plus more concrete plus more asphalt equals more flooded homes and businesses when a heavy tropical storm or hurricane blows through. Billions in property damage and even loss of life occurs when there is nowhere for heavy rain to go except where it’s not wanted. Bayous, waterways and city stormwater systems are overwhelmed from the massive runoff from all the impervious, non-absorbent paving and buildings and infrastructure. Runoff swells and streams into homes, businesses, schools, churches, nursing homes, hospitals and more. It seems that more and more areas and neighborhoods, that never had concerns of flooding before, have become vulnerable to rising waters.

Bayou Dredging
Dredging silt from a diversion channel in Katy, TX. Photo: Community Impact Newspaper

Dredging bayous, adding detention areas, increasing stormwater systems capacity and restricting new development are all costly, undesirable but necessary ways to address flooding. They are necessary, long term ways to address stormwater management. But what can an individual, a small organization or business do to protect their property against water damage? What can the little guy do to protect his turf and also not contribute to his neighbor’s woes? What can corporations and developers do to expand responsibly without adding to the runoff problem in their area?

TRUEGRID offers a solution that can be used economically by anyone- from homeowners to large companies and cities – to help mitigate flooding and make communities more absorbent. TRUEGRID permeable pavement is 100% pervious and drains instantly at over 800 inches per hour. There is no runoff when using TRUEGRID. Stormwater detention is put in the rock sub-base below the grid surface. Void space between the rock allows for 40% of the volume of the base I for water storage. Depth of the base determines the amount of stormwater that can be detained. Most commercial parking lots and TRUEGRID applications utilize an 8” base for a 10” crossection that can absorb and detain rainwaters during heavy storms. TRUEGRID can be installed for less than concrete and gives added protection against rising storm waters.

So, what can the little guy do?

TRUEGRID permeable pavers were installed for this residential driveway to help capture stormwater runoff and prevent flooding.

The same thing as the big guys that have used TRUEGRID, like Whole Foods, Google, the US Military, AutoNation and more. Pave with TRUEGRID permeable paving and in effect create a moat around their castle.  Whether it’s your driveway, your small business, church or other you can take action to help protect your property from water damage. The more neighbors that do the same, the less runoff there will be to endanger lives and property.

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All commercial sites need to consider stormwater management when being designed and developed. The traditional way to design for stormwater management is take a big chunk of land on a new site and use it to build a detention pond. The pond is designed to have capacity to detain the runoff from the entire piece of land including impervious buildings or paving. All stormwater runoff is directed to the detention pond in the event of rain to compensate for the developed impervious surfaces, runoff from buildings and pavement.

Learn how to eliminate your detention pond to save money with TRUEGRID Permeabl Pavers.
Save money and land by eliminating your detention pond with the TRUEGRID Paver system.

Detention ponds are expensive to build and to maintain. Base capital costs including engineering and design, geotechnical testing, drainage elements including piping and pumps, filters, excavation and soil removal, concrete work, legal fees, landscaping and architectural elements add up to expensive construction for a hole in the ground. Additionally, detention ponds require long term maintenance to operate properly. Unmaintained ponds become a source of mosquito breeding grounds and toxics in the groundwater as well as aesthetic blights.

Perhaps the greatest cost of detention ponds is the land. The value of land is often the most important consideration to a developer. Land used for a detention pond cannot be used for generating revenue – a larger building (s), more parking, green space. This makes the cost per square foot of a project escalate as the land utilization is reduced dramatically when a detention pond is factored in. Sometimes detention requirements can eat up as much as 25 to 30% of a site. This cost affects not only the upfront capital expense for construction and maintenance cost of the property but also the cost or price of the facility in use.

TRUEGRID Permeable Paver industrial lot application – The World’s Strongest Permeable Pavers supporting a 260,000 lb  crane and other heavy industrial equipment.

As an example, if a large equipment rental facility can park 40 mobile cranes, trucks or tractors on their yard that they can rent at $20,000 /month, they can generate $800,000 / month in revenue. If 25% of the site is used for a detention pond, they can only park 30 cranes and generate $600,000/month in revenue. That’s a lost opportunity cost of $200,000 per month or $2.4 million per year.

Is the only alternative to raise prices to make up for that shortfall and hope to not lose out to competition?

No. There is an alternative that costs the least upfront to construct, the least to maintain, and offers maximum land utilization for revenue. By paving with TRUEGRID permeable pavers instead of concrete or asphalt the economics of a site can be altered in a dramatically positive way. The TRUEGRID pavement system is 100% pervious and has storm water detention capacity under the grid surface in the base rock. On the first point of pervious cover, TRUEGRID does not count against a site’s impervious surface because the permeable pavement system drains at over 800 inches per hour and is permitted as 100% pervious. All things being equal, a site with a building and hardscape concrete or asphalt paving will have a much greater percentage of impervious surface than a site with permeable TRUEGRID and a building. What does that mean to the owner/ developer? Well, they can now have a bigger building if they so choose.

On the second point of stormwater detention, the required capacity of cubic feet of stormwater detention on the site can be stored under the TRUEGRID paving surface in the 40% void space in the base rock. That means the parking area has not become a giant detention pond that you can drive/park/walk/ work/recreate on. Most times, a separate detention pond is not needed. With TRUEGRID, drive on the surface, drain and detain stormwater below. The cost of an installed TRUEGRID lot is generally 20% less than a concrete lot. Add the savings of not having to build a separate detention pond, no ongoing maintenance and the land savings and utilization- and you’ve got an easy way to eliminate a site’s detention pond while developing responsibly for stormwater management and saving a bundle in the process.

DRIVE ON THE SURFACE AND DETAIN STORMWATER BELOW IN THE ROCK SUB-BASE.

Put your storm water detention under the parking lot. With TRUEGRID plastic grid pavers filled with gravel on a rock sub-base, rain drains virtually instantly- over 800 inches per hour. The surface is 100 % pervious and the crossection of the sub-base rock and rock filled, TRUEGRID can detain stormwater.

Eliminate your detention pond and save money?

Build with TRUEGRID® to eliminate detention ponds and utilize 100% of your land for more parking, storage units, and revenue. Expand an existing parking lot without adding new detention.

100% Permeable + Increased Land Use = MORE REVENUE

Benefits.

  • Flood Protection
  • Cities appreciate Low Impact Development
  • Lower Construction Costs
  • Upgrade existing lots – eliminate dust & mud
  • Eco-Friendly Marketing Opportunities
  • Fast & Easy to Install

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