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Review Wall Height and Excavation Savings

3:58
15:12
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At 3:58 in

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What happens here

A brochure for the 'Block-Bridge Gravity Retaining Wall System' is shown, highlighting its key features and benefits. The system is designed for 'easy, hand-stackable, retaining walls' from 6 to 10 feet tall without geogrid. It emphasizes 'reducing excavation and recompaction behind the wall by 33-55%'. For specific wall heights, the brochure provides comparisons: a 6-foot wall using traditional geogrid requires a 5'6" grid length, whereas Block-Bridge requires only 2'6" (55% savings). An 8-foot wall requires 6'6" of geogrid versus 4'0" for Block-Bridge (38% savings). A 10-foot wall requires 8'0" of geogrid versus 5'6" for Block-Bridge (32% savings). A company representative later confirms that the system is engineered to support walls up to 12 feet tall without geogrid, achieving this height with about a 9-foot setback, which is approximately half the excavation depth required by standard methods for a wall of that size.

Goal: Understand the structural specifications and economic benefits of using the Block-Bridge system for various wall heights.

Tools and materials

  • Block-Bridge Brochure Block-Bridge — Providing technical specifications and comparison data

What they say

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bridge i want i just want to put this on your radar screen you guys so if you build bigger walls you got them six eight ten foot tall six foot wall five foot six a grid versus block bridge which is two foot six eight foot oh here they got an eight foot wall grid length six foot six that should be eight foot technically and that would that says a four foot i would never use a six foot six grid length in a wall but you can under certain circumstances but i wouldn't but that's it i guess space savings is the real deal okay so you can go 12 feet tall yes 12 feet tall without using grip without using grip how many rows how many courses of block do you then need daisy chaining behind it to go 12 foot um i can show you a drawing the all the drawings are right on our website okay all the engineer drawings but they're uh they're all right here so so 12 foot is the maximum height that you have it currently engineer two and you've got a five foot five five foot five uh support yeah setback so on a 12 foot tall wall if it was using grid would have a 12 foot grid length on it a little bit i'll be about uh at 75 percent so at 750 so it'd be about 99 feet you have to go back so this saves you about half of the extra 75 is what the industry standard is we do it one to one on all of our walls okay it's just overkill but when you're doing a bid and an estimate and you want to be on the cautious side a one-to-one is a very easy ratio to use and you know you're normally not going to go wrong unless you got a really heavy load on the back side of it so all right well thank you

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