Building an OB Schedule

[AQUA~HOLICS]

My plumber likes to show up after rebar has been installed.

 

[Schwimmbad]

My plumber likes to show up after rebar has been installed.

Thanks Aqua-Holics, I thought I read build threads with both situations (some plumbing than rebar and some rebar than plumbing). Haven't thought a lot about it.

It seems the benefit of plumbing after rebar is the pipe won't get damaged when installing rebar. The challenge is it will take a bit more time to excavate for plumbing since the excavation will have to work around the rebar. Although I guess the excavation for the plumbing can be done before the rebar and just clean the excavations after rebar is done. Maybe it has a lot to do with the amount of plumbing in the bottom of the excavations. In floor cleaning and spas have a fair amount. Is this the quandary?

I'm not putting in a spa or in floor cleaning and debating with myself about a main drain. At most I'll have a main drain, so plumbing after rebar is probably the best approach for me. Am I on the right track?

 

[setsailsoon]

Schedules can quickly grow to so many tasks and relationships it can get overwhelming and even a little confusing.

Let's break this down into chunks, starting with construction activities. This is for my planned IG gunite pool (30x16).

The tasks below represent durations for on-site work only. The sequence and task durations are my guesses, based on reading many build threads here, but never having built a pool. Are any tasks out of typical order? Should any additional tasks be added? Are the durations decent?

Layout Pool, Equipment Pad, Plumbing Runs 1 day
Call Arizona 811 to Dig 5 days
Review and confirm layout 1 day
Excavation 3 days
Rough Plumbing 3 days
Steel/Rebar 2 days
Rough Electrical 2 days
Shotcrete 1 day
Masonry Water/Fire Features 3 days
Waterline & Accent Tile 2 days
Fencing/Barriers 2 days
Finish Electric 2 days
Finish Plumbing 2 days
Coping (paver) 3 days
Clean-up & Prep for plaster 2 days
Plaster 1 day
Initial Fill 1 day

There are lots of other activity groupings to deal with design, permitting/HOA approval, bidding, equipment, coordination, that we can address in later posts.

Good stuff Dave and just in time. I'll role out the first pass with this input and use sub project features so a simple view is always available.

Chris

 

[setsailsoon]

Schedules can quickly grow to so many tasks and relationships it can get overwhelming and even a little confusing.

Let's break this down into chunks, starting with construction activities. This is for my planned IG gunite pool (30x16).

The tasks below represent durations for on-site work only. The sequence and task durations are my guesses, based on reading many build threads here, but never having built a pool. Are any tasks out of typical order? Should any additional tasks be added? Are the durations decent?

Layout Pool, Equipment Pad, Plumbing Runs 1 day
Call Arizona 811 to Dig 5 days
Review and confirm layout 1 day
Excavation 3 days
Rough Plumbing 3 days
Steel/Rebar 2 days
Rough Electrical 2 days
Shotcrete 1 day
Masonry Water/Fire Features 3 days
Waterline & Accent Tile 2 days
Fencing/Barriers 2 days
Finish Electric 2 days
Finish Plumbing 2 days
Coping (paver) 3 days
Clean-up & Prep for plaster 2 days
Plaster 1 day
Initial Fill 1 day

There are lots of other activity groupings to deal with design, permitting/HOA approval, bidding, equipment, coordination, that we can address in later posts.

Dave,
I think it might help if I take a shot at a preliminary schedule. I've got many of these items incorporated and some are in lines that roll up several activities on your list. I'll fix that in next step. One thing I'm seeing is that I need to resolve concrete delivery. This sort of illustrates a benefit to generating a schedule. I can order the concrete early myself if it really takes this long in my area or I can include it in the scope of the contractor that builds forms and lays the rebar (at a delay in the schedule). This is one of the first items I need to sort out. I've uploaded the .pod file to the Dropbox folder. Below is an overview gantt chart,

Chris

 

[AQUA~HOLICS]

The number one reason my plumber insists on starting after rebar is one less trade coming after his work and less chances of damage to his work. He sometimes has to re-bend some of the cage for his main drain lines with a hickey bar but he feels that’s a good trade off.
On your schedule layout I noticed no dates for city inspection. I advise customers to have one or two days open after the inspection dates for corrections if needed, especially before Shotcrete. Keep in mind if you have to cancel last minute on a date and reschedule that crew will most likely not work at all that day.

 

[Schwimmbad]

On your schedule layout I noticed no dates for city inspection. I advise customers to have one or two days open after the inspection dates for corrections if needed, especially before Shotcrete.

Excellent point, should allow as standard a few days to fix issues from inspections. In my schedule I was allowing a week from last trade needed for an inspection to completion of the inspection but not allowing time to fix issues.

 

[setsailsoon]

Here's a view with the preliminary parts of the schedule rolled up so it focuses on construction:

Chris

The number one reason my plumber insists on starting after rebar is one less trade coming after his work and less chances of damage to his work. He sometimes has to re-bend some of the cage for his main drain lines with a hickey bar but he feels that’s a good trade off.
On your schedule layout I noticed no dates for city inspection. I advise customers to have one or two days open after the inspection dates for corrections if needed, especially before Shotcrete. Keep in mind if you have to cancel last minute on a date and reschedule that crew will most likely not work at all that day.

Good point and thanks for the input!

I have 6 inspections shown on my permit (I think there were 23 on the house!) I'll add them in the next version. Jurisdictions seem to vary a lot on permit requirements but this can be customized for each pool using our data file as a starting point pretty easily. My required permits are shown below. I found inspectors on the house to be always easy to schedule with one day notice and they are cancelled at no charge with 24 hours notice as well. I plan to tie final payment for each sub to successful inspection. And I would not confirm start date of the next sub until inspection was completed. Sometimes this causes delays but it was rare. In a few cases I had a partial release where work could continue. For example I got a partial on electrical that enabled me to continue with plumbing when it was missing 2 wall outlets so long as I did not cover the area with Sheetrock. This might work in some cases on the pool. Required inspections are shown below.

Chris

Inspections for my permit:

 

[setsailsoon]

Thinking a little more about inspections I'll add them in as 4 day events allowing for some delays in scheduling. Here's an example of what it'll look like in the schedule with two of my 6 required. Keep in mind this schedule has not yet been optimized to parallel work where possible. I'll put all 6 in the schedule then update the file to rev c

Chris