First, the answer to Vol. 10 (last week).
Wow, there were a lot of great responses! Everyone had great observations and admittedly, I missed the fork-lift safety issue in the photo. At first glance, they looked like they were parallel to and on top of the grade but they are in fact in the air! Thanks, Ryan, for that catch!
As you can see in the photo the following day, the “big one” that I discussed with the owner, CE, installer, and earthwork contractor was the lack of ballast. Since they were all standing there under those conditions, I felt like they were aware of the situation. But you can never assume and in a CQA role it is my responsibility to protect the owner and myself from liabilities, so I brought it to their attention, and they told me the ballast looked sufficient…
The design of this cell has the certification limit somewhere to the right (6-10’ I think) of the high-point (which is about where the wedge seam runs) but not out as far as the sandbags/edge of liner. I think the slope was approximately 2% in each perpendicular direction from the high point. This was to allow for future tie-in – basically each cell floor ties into another one in this manner as they are constructed. The clay condition normally would be an issue, but it is outside the certification limit – kudos for catching it!!
Other things you already pointed out: loose scraps/trash, no secondary containment for the gas cans (it wasn’t required on this project, but I still pushed for it as best practice), and no rub sheet under the extrusion welder or cases of water.
In these blog posts, Do You See What Glen Sees, I will present a photograph or short video related to earthwork or geosynthetics construction and have you identify the significance of what you’re seeing.
It could be things being done correctly or incorrectly. Primarily, these will be things that impact quality.
In addition to my blog, I’ll post this content on X and LinkedIn. You can post your response on one of those two.
I’ll give you my thoughts on each photo or video when I post the next installment.
Do you see what I see? Or did you find something I missed? I’m excited to find out!
Here is the next installment. Take a good look. Do You See What Glen Sees?
Welcome to the 11th volume of Do You See What Glen Sees?
One of the things I’ve enjoyed throughout my career is that I’ve been fortunate (site owners may see many of them as unfortunate) to see and experience unique situations on project and hence, I can use them to train others!
By the time this situation arose, I’d been in the industry for 15 years and this was my first time observing this.
What do you see?
