This is in response to a pm pz sent me AND the rest of this thread
pzmotorsports said:
Hello Ted, I appreciate you taking time from your schedule to answer my questions concerning this project. I will like to ask you a little about the dig. I have a friend that is also an equipment operator here in Afghanistan which will be taking vacation during the same time I am to help me complete the excavation process. We have gone over the pool install manual and we are trying to figure were should we start digging once the initial 44' bed has been dug. It states to start from the pool break going down to the hopper but he is thinking it will be easier to dig the hopper first and work our way up to the break point? We are also figuring how the walls surrounding the hopper will be dug to get the proper angles and shape, he believes we have to do some work by hand to ensure we do not over dig these areas. We will be using a transit laser lever for the task. This is his first time digging a pool but he is one of the best operators we have in our section and I belive he is capable of handling the job.
What advice can you provide me concerning the dig process and what to look for to ensure we have a proper and leveled foundation for everything else that will follow?
Thanks for taking time for helping me out and if I don't here from you in a few days, enjoy your vacation as I will be enjoying mine building this pool for my kids!
There is so much to try to tell you about your build, I can't possibly do it in one post
I'll keep this, mostly, to what you'll be doing on Mon & Tues.
It takes 0 time from my schedule to assist you, I unwind after a days work by coming here and dealing with pools I don't have to 'see'
The most important thing on digging the pool is that your excavator friend
know what the bottom is supposed to look like, then you have to trust his 'eye' and skill. What we do, after the 44" bed is set, is to put rebar pins in the corners and run a string to define the pool area. Then we put pins at the break/ transition points, pull a string and mark the line with paint or lime dust, this let's the operator know where NOT to dig past. Having pins at every 'defining point' lets you pull a string and use the laser transit to see if there is enough, or too much, ground removed. There will be
a lot! of 'hand trimming' needed, as this is his first pool dig
Don't be afraid to run strings to see if you're high or low! - of course you'll have to remove them while the machine is digging, but getting a closer dig will save on materials when doing the floor! If you have areas that are over-dug, you can fill them with either gravel or the original dirt, compacted. If for any reason, you have mud (squishy to step on) on the bottom when you go to trowel the vermiculite, dig it out and fill with gravel.
Rake out and hand level the line on which the walls will rest, the closer you get that, the easier it will be to have the walls ~ level when you put them together!! - use the laser transit every 1' to insure that the ground on which they will sit is level. We always wait until the walls are up and the collar poured before doing the 'final touches' to the bottom on the rough dig. After bolting the panels together, square up the pool to whatever reference point you're using. I don't know how detailed your instructions are, but you need to insure that the pool is level, squared and the walls are straight, before you pour the retaining collar!! Use wooden shims to support every seam, so that you know that the top of the pool will be level!
There are just a couple other things I want to address before I leave for ~ a week:
Your time frame isn't taking into account a number of things, including:
#1 time for the backfill to compact!!!!! - up here we don't do the deck for at least 6 weeks after the backfill - having voids under a deck is just asking for future problems! As your wife works for a crete company, you can let the backfill settle and then have them do the pour.
#2 inspection for the bonding of the pool/ pool light before running the pool - this one could kill your plan, if like up here, the inspector has to sign off on the light before the pool is filled - inspectors work on their own schedule (and I've noticed their schedule doesn't jibe with anyone else's)
#3 I don't see anything about installing the coping or doing the 'pre-liner drop' floor prep.
There's other stuff, but it can wait until I get back from MV. (I'm gonna send you a pm with my phone #s, in case something comes up)
p.s. Dave, the company I work for has done 3 pools/ week (start digging the first on Mon and have all 3 ready to swim in by Sat pm) 2x - although that was with a big crew, 6 people, and (ahem...)
I was on the construction crew