[Nealtw]

Does this crack go right across?

 

[sjbgig]

Yes ... across all 32ft of this slab. It is pretty hairline at times.

 

[landfillwizard]

I would have the trench saw cut to keep the sides square. Place corrugated drain pipe in the bottom of the trench and wrap with a filter fabric. Backfill with pea size stone and place 1-1/2"X1-1/2" along the edge of both sides of the concrete and secure. Keep some pea stone handy for settlement.

I forgot to tell you the 1 1/2"X1 1/2" is angle iron I would use to re-enforce the sedge of the concrete. Before securing the angle iron i would place weeps to allow drainage. When you saw cut the area for drainage, I would include the area of the catch and remove the composite cover.

The areas that were cracked in photo #15 I would remove the pieces and compact the area as much as possible.

 

[Nealtw]

Maybe take out enough to remove the crack about 4 ft and shape a new swale that will move the water in both direction from the center.

 

[huesmann]

Problem on the right is there appears to be a low spot where water ponds, so draining from the center will still cause water ponding there.

Cutting out the swale and replacing with a trench drain is a superior plan, unless funds simply don't permit.

 

[A. Danger Powers]

[QUOTE="sjbgig, post: 6525868, member: 594670"
So I'm currently inclined to attack this piecemeal, which again raises my question of how to deal with the 12" square composite basin area in my #15 post.
All feedback is welcome!
[/QUOTE]

If you want to piecemeal approach, you have to know your overall plan so you can identify how to create multiple phases while at least minimizing rework in later phases.

The issues I see:

The grade on the right side of the driveway is impeded. The grade between the fence & garage is flat or negative.
The slope on the swale of the driveway is impeded in multiple locations.
There are signs of washout below the slab.
There are signs of leakage from the storm drains/catch basins - this is proven on the top drain.
I don't see downspouts but those should discharge water at least 10' from garage/foundation.

I think step 1 is addressing the slope on the right side; step 2 would be figuring out how to plug leaky drain at top of driveway; step 3 would be french drain & trench drain along the slab in front of garage. On the right side, both should be taken to even or just past the planters.

My concern is that step 3 will not be surgical due to washout under the concrete. It's likely those slabs will need to be redone as they will drop once you cut a channel. Best to plan for the worst...

I am thinking about how to minimize rework while ensuring each step doesn't make it worse. If you start with the french/trench drain, you are just moving the problem to a different part of the driveway. I think this is a project that does not lend itself to a piecemeal approach. This would be an every evening/weekend until all items complete if I DIY'd it.

 

[sjbgig]

Thx again for all the feedback!
Several have raised concerns regarding swale drainage to the right/fence side ... I don't see it. In the photos below I have a garden hose sending water down my driveway. At this point in the swale all the water is diverting to the right/fence side. I see the water channel as fairly even & narrow and discharges into a storm drain in the second photo (Note - all my utilities run under this area). My current thinking is apply some flex/filler/seal to the cracks and call it OK.

There are additional indications which lead me to believe the 12x12 composite catch basin area in the foreground of the first photo is my biggest problem. I'm inclined to have the undermined concrete area cut out, inspected, add/compact fill, reuse or replace catch basin and have it properly set in new concrete.
If inspection reveals deeper problems, I'll cross that bridge when it comes.
Worse case scenario, I proceed with the above and my garage slab continues to sink, then I may cut my losses (remove the 12x12 basin ) and install a French drain and a channel drain combo running the entire width of the garage.

The house has been here for 40 years, I've been here for 5. I believe the far end of the garage slab (furthest from the driveway) has gradually been sinking for many years (it's most pronounced ~in-line with where the 12x12 basin is.

 

[Nealtw]

Thx again for all the feedback!
Several have raised concerns regarding swale drainage to the right/fence side ... I don't see it. In the photos below I have a garden hose sending water down my driveway. At this point in the swale all the water is diverting to the right/fence side. I see the water channel as fairly even & narrow and discharges into a storm drain in the second photo (Note - all my utilities run under this area). My current thinking is apply some flex/filler/seal to the cracks and call it OK.

There are additional indications which lead me to believe the 12x12 composite catch basin area in the foreground of the first photo is my biggest problem. I'm inclined to have the undermined concrete area cut out, inspected, add/compact fill, reuse or replace catch basin and have it properly set in new concrete.
If inspection reveals deeper problems, I'll cross that bridge when it comes.
Worse case scenario, I proceed with the above and my garage slab continues to sink, then I may cut my losses (remove the 12x12 basin ) and install a French drain and a channel drain combo running the entire width of the garage.

The house has been here for 40 years, I've been here for 5. I believe the far end of the garage slab (furthest from the driveway) has gradually been sinking for many years (it's most pronounced ~in-line with where the 12x12 basin is.

I think the comp drain and that concrete was done later and the older concrete was undermined when they installed box.
I think of you were to repair that triangle beside that box, you would solved most of the problems with just a bit of water left in the center of the driveway.

 

[A. Danger Powers]

Those last two pictures look much different. Sometimes there are artifacts in a two dimensional image. I always defer to eyes on site...

Can you verify the grade on the planter area adjacent to garage? That still looks flat or a little negative in the pics; could again be the angle of the pic. Recommended slope around foundation is on the order of 1/2-1" per running foot for at least 10'.

 

[sjbgig]

Agreed ... pictures can be deceptive.
The grade by the planter area is OK ... slightly away from the house.
I've never had water up against that side of the house.