In-Ground Swimming Pool

Page 2

Step 10: Time to install your plumbing. Run 1 1/2" PVC plumbing lines. You will have 3 lines from the filter to the pool.

1. Wall line to pool (1 line, 2 wall outlets)
2. Bottom drain line 
3. Skimmer return line 

Your skimmer should be in the deep end (on the side), and if there are prevailing winds, it should be downwind so floating debris is helped toward the skimmer. Water return lines to pool should be located at opposite end of pool from skimmer.



Step 11  Pour footer concrete.  The footer locks the bottom of the wall brace (which by design locks the top of the wall) and the bottom of the wall in place.  Depending on vehicle access, and how much you want to "pull" concrete, you may find a loader helpful in placing the concrete in the footer cavity as shown in our pictures.  The footer should be 6-8 inches thick. 



Note:  In-the-wall steps are a popular feature and will replace some panels in your pool wall.  They need to be supported underneath as shown in the instructions that come with them. 

As shown in the pictures you can run your plumbing lines through the wall braces for support.  Simply drill your inlet holes through the pool wall at approximately the height of the middle horizontal support on the wall braces.  This way the PVC piping can sit on the braces until it takes the turn away from the pool toward the filter. 

Step 12: Work begins on the bottom. This is easier than it looks.  The bottom of a pool is not as flat as sidewalks and patios, so most homeowners can trowel out an acceptable 2" thick bottom finish.  

Rent a mortar mixer (the largest one they have!) The mix ratio is 1 large bag of vermiculite (50lbs) to 94lb bag of Portland Cement, and 10 gallons of water.  Vary these measurements to suit your needs, as you may need less or more water. Also, you will have to cut these measurements in smaller increments as mortar mixers cannot hold the batch size described above.

Start placing and finishing the 2" cement mixture at the deep end as shown. Start at the top of the diving well slopes, working your way toward the bottom drain. Use a wood or metal concrete finishing tool.  The correct finish is smooth and flat....not beautiful.

Remove the grade nails and strings as you finish an area.  Work your way out of the deep end toward the shallow end.


The cement mixture with the correct moisture content will look relatively dry when compared to concrete.

Note:  Any pool building supplies that are not available from the supplier of the pool such as vermiculite, can be purchased locally from a pool contracting company.  Portland cement and PVC plumbing lines are available at home centers, and building material stores.


If you have in-the-wall steps, curve the cement bottom up on the plastic front piece of the step unit with a 2" radius. In other words add extra cement where the step unit meets the bottom, and smooth it up the front wall of the step unit 2".  The vinyl liner has trouble stretching into this bottom corner of the pool, so it is being filled in.

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