# US 11,028,611 B2 · Underground watersilo

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- Number: US 11,028,611 B2
- Document ID: US11028611B2
- Status: Granted
- Kind: B2
- Application number: 16/503,463
- Filed: 2019-07-03
- Published: 2019-10-31
- Granted: 2021-06-08
- Earliest claimed: 2019-07-03
- Applicants: Shahriar Eftekharzadeh
- Inventors: Shahriar Eftekharzadeh
- Web page: https://patentgrep.com/patent/US11028611B2

## CPC

- E03B 11/14: of underground tanks
- E04H 7/02: Containers for fluids or gases; Supports therefor
- E03F 1/002: {with disposal into the ground, e.g. via dry wells}
- Y02A 20/00: Water conservation; Efficient water supply; Efficient water use
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D)
- E03F: SEWERS; CESSPOOLS
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A method for constructing silos underground to store water.

## Claims

### Claim 1

A method for constructing an underground silo, the method comprising:
a drilling rig disposed to drill at least one vertical cylindrical hole underground having a diameter measuring the same as an outside diameter of said underground silo;
wet concrete poured at a bottom of said vertical hole underground;
a closed-bottom, open-top, removable cylindrical form with an outside diameter measuring same as an inside diameter of said underground silo, and a length measuring at least the same as a wall height of said underground silo, said removable cylindrical form centered on said vertical hole and placed on top of said wet concrete;
water poured inside said removable cylindrical form disposed to sink said removable cylindrical form inside said wet concrete to a desired level;
wet concrete poured in an annulus between said vertical hole underground and said removable cylindrical form up to a desired level, disposed to function as said wall of said underground silo once set;
a structural roof equipped with an access means into said underground silo placed on top of said wall of said underground silo once said removable form has been removed;
backfill placed and compacted on top of said structural roof up to a ground surface.

### Claim 2

A method for constructing an underground silo, the method comprising:
a drilling rig disposed to drill at least one vertical cylindrical hole underground having a diameter measuring the same as an outside diameter of said underground silo;
wet concrete poured at a bottom of said vertical hole underground;
a closed-bottom removable cylindrical form with an outside diameter measuring the same as an inside diameter of said underground silo, and a length measuring at least the same as a wall height of said underground silo, said removable cylindrical form centered on said vertical hole and placed on top of said wet cement;
a means to sink said removable cylindrical form inside said wet concrete to a desired level;
a means to resist a buoyant force upon said cylindrical Formby the addition of wet concrete in an annulus between said vertical hole underground and said removable cylindrical form;
wet concrete poured in said annulus between said vertical hole underground and said removable cylindrical form up to a desired level, disposed to function as said wall of said underground silo once set;
a structural roof equipped with an access means into said underground silo placed on top of said wall of said underground silo once said removable form has been removed;
backfill placed and compacted on top of said structural roof up to a ground surface.