20×40ft

Water system

One push dumps the pool into holding tanks. The polish tank filters the water before it comes back.

Water is in the pool.

Temperature

84°F · 29°C

Swim current

The jet at the deep end pushes the water. Face it and swim in place.

Off · Still

How to build it

The sequence for this yard and this design. A planning order, not a permit set.

1. 01

   Stake the lawn

   1–2 weeks

   Leave the shed, the raised beds, the hedge, and the path. The 20 by 40 ft water sits in the open lawn, shallow toward the garden, deep toward the house. Call for utility locates, then have the waterline and the 6 ft deck staked. The sheets in this app are not that survey.

2. 02

   Permit the work

   4–10 weeks

   Pool, electrical, and a barrier plan. The cover is part of the barrier only after the inspector accepts it. Gunite is the shell that takes a swim-jet penetration and the dump pipes in the wall.

3. 03

   Dig the pool and the tanks

   2–4 weeks

   About 222 cu yd for the pool, plus two buried tanks at the deep end. Each tank has to hold the full 29,922 gallons, about 4,000 cu ft, which is why the dump can be one push. If both will not fit beside the beds, build one tank and dump in two moves.

4. 04

   Shell, jet, and pipes

   4–8 weeks for steel, shotcrete, and cure

   Bond the shell, then the returns, the heater loop, and a dump line short enough to empty into the hold tank. The swim jet goes in the deep wall and pushes down the 40 ft axis, so you face it and stay in place. The polish tank sits after the filter, then back to the pool.

5. 05

   Heat, light, sound, deck

   2–3 weeks

   The heat pump starts from about 145,000 BTU for a 15°F rise. Confirm it can still climb to hot tub. The red light is a low-voltage run on the deep wall. Syndrome is a separate transducer circuit, bonded and on a GFCI. Anchor the safety cover into the new deck, not onto the coping afterward. Keep the deck off the garden beds and the gravel path.

6. 06

   Fill and prove it

   About 1 week

   Fill from the hose is about 55.4 hours at 9 gallons a minute. Then run the real sequence once: drain into the hold tank, polish, return, heat, red light, sound through the water, swim current, and close the cover. Do not swim the current until the cover is open and the water is full.