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Yep. Ideally at least 3 core samples tested at 28-days post placement, using ASTM C1604 procedures for sample collection, preparation, and testing.

Rebound is the stuff that bounces off during spraying and doesn't stick. Slightly different from material carved off during shaping, but they're equally bad, and yes should be removed to the extent that it's practical. The rebound under the rebar on the floor is very difficult to remove, but...

I agree with Jimmy, option one with an overlay if you don't like looking at the plugs. Poly foam is better for some applications, but for something like this I'd go with standard mud. Find a local company that specializes in mudjacking / slab jacking and let them determine the size and spacing...

There are several pebble finish manufacturers, and some pool plastering companies that do their own in house custom pebble finish blends. Yours looks like smaller aggregate, which could be Pebble Tec pebble sheen, or Stonescapes mini pebble, or CL Industries sunstone pearl, or something totally...

You should be able to connect a vacuum hose to the inlet at the bottom of your skimmer. That's what I do.

Based on the diameter, I'd guess those are for an old whip hose system. I have no idea where to find whip hose fittings that might fit them though.

Size really depends on the size of the shelf and the spacing of the umbrella sleeves. We found that the 11' diameter umbrellas were too large, and the 9' ones work well for our use. I can't remember the brand names off hand, but we've tried several, and most of them are pretty comparable. Some...

I'm not in any way qualified to answer your questions, but I think I can shed light on a couple of things. The water hardness here in southern AZ varies greatly seasonally, and there's a ton of variation between source wells. This means that the water in the next door neighborhood could be...

Thanks for the ideas. I'm also planning on putting up a set of 2 large shade sails, but that's going to require installing some large steel posts as there's nothing near the pool to attach them to right now. That likely won't happen until next year at the earliest. The umbrella will...

I'm extending my baja shelf and adding a step down into the pool as part of my remodel, and bought 2 umbrella sleeves to put in. I'm nearly ready to start pouring new concrete, so it's time to finalize the decision on where to put them. We've been all over the place with ideas, but would like to...

Shade sails require much sturdier posts than what you'd be able to put in the volleyball net sleeves, but those sleeves work great for patio umbrellas. We picked up a couple of cheap beach umbrellas from Costco a couple years back that we use in our volleyball net sleeves. We use door stop...

Have you checked to make sure the check valve before the SWCG is working properly?

Went with a weaker M20 mix for the equipment slab, 1:3:1.5, and a stronger M30 mix (1:1.5:0.75) around the skimmer. Planning to use M20 for the footer and either M25 or M30 for the Baja shelf and patching the holes I cut in the decking. Placement will be a combination of elbow grease and...

Was thinking about that. I exposed some rebar on the opposite side of the pool from the light, when tapping into plumbing for the sheer descent, so I could test continuity between that and the light niche and the bond wire. I'll attach a photo hint on the slab. You can probably guess how the...

Thanks all. Yes, there's a 10 ga bonding wire going to the equipment pad. I just poured a new equipment pad yesterday, and tied the existing bonding wire to the rebar in the new pad, along with the new 6 ga wire I ran from the brass light conduit. I sanded the corrosion off of a section of the...

That's a good idea, I'll look into it. Around here they're hesitant to get involved unless there's a permit for work or a complaint filed about non-permitted work being done, and what I'm doing doesn't require a permit here, so it might be a bit of a challenge. Hard to say when the pool went...

During my pool remodel I uncovered what I'm fairly certain is a bonding wire, which was hiding in the dirt next to the equipment pad (which was tiny and broken into pieces). The problem is that it's only 10 ga wire, instead of the standard 8 ga. While cutting a portion of the deck out for a...

I'm so sorry to hear about all of these issues. The fact that the concrete was mixed for 3.5 hrs before even arriving at site would really concern me, and may have something to do with the weak sections you're seeing in the shell. With my job I design and supervise the installation of a lot of...

Hah! Between 78° and 80° is preferred swimming temp for us, and anything over ~84° starts to feel too much like a bathtub to be refreshing. The blazing ambient heat we have here likely has a lot to do with that though.

I've had good luck with the little plastic wedges meant for leveling tables. Three of them evenly spaced do a decent job of holding the umbrella upright and help keep it from rotating when the top is tilted. These may work even better, but I've not bothered to buy one and test it out yet...

Thanks for the suggestion! Something along those lines might work great. I had a pool expert out to look at my pool today though, and he says the 3/4" returns are from an old whip hose system, and the main trunk running inside or behind the bond beam on those was typically either 1 1/4" or 1...

I'm in the process of remodeling my pool, and am considering adding a small wall on the edge of the pool with a water feature. There's an abandoned return line system that I can tap into for water, but the problem is the lines are only 3/4", which I don't think will be able to provide enough...

It's really steel (or more accurately iron) that's highly sensitive to corrosion from exposure to chlorine/chlorine fumes. Stainless steel is steel with chromium added to enhance the corrosion resistance. Other metals like molybdenum are sometimes added as well to increase acid resistance. The...

I'm guessing the temp sensor the Screenlogic app is using is in the plumbing somewhere and not in the pool? This means it's only measuring an accurate temp when the pump is running. And also, as previously mentioned, to get an accurate temp you really need to run the pump for quite a while to...

Ours made a huge difference, but some of that may have something to do with the extremely low humidity here. That said, removing it and putting back on got pretty tedious after a while, and it started to disintegrate after only 1.5 seasons, so we have no plans to get another one.

Many (most?) of the color LED bulbs for pools change colors or change between programs by turning the switch off and back on. Not sure what type of home automation you have, but should be easy enough to use your HA system to program the smart switch to turn on and off as needed to get the...

This! Home automation, and SmartThings in particular, can quite frustrating at times, but it's also pretty rewarding. Wife was very skeptical at first, but now she loves it.