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Grease Interceptor Installation Process Step by Step

Equipment Layout

Description:
This image shows the equipment layout phase of the grease interceptor installation. The 4-inch inlet pipe carries grease waste from the restaurant kitchen toward the treatment system. The first device visible is a cleanout, which provides access for maintenance and allows the plumbing line to be cleared in case of upstream blockage.

Immediately downstream is the solids interceptor, designed to capture food particles and debris flushed from the kitchen sinks before they reach the grease interceptor. This prevents clogging and ensures the grease interceptor operates efficiently.

Next in sequence is the grease interceptor itself — the primary treatment unit where fats, oils, and grease are separated from clear water. Finally, the sampling port located downstream allows the Authority Having Jurisdiction (AHJ) to verify that discharge to the public sewer is free of grease and compliant with local FOG regulations.

 📸 Image: Equipment Layout
Caption: Initial layout of the grease waste system showing cleanout, solids interceptor, grease interceptor, and sample port.

Purpose: This setup illustrates the proper sequence of a grease waste system, as required by the Florida Building Code (FBC Chapter 10) and Miami-Dade DERM FOG Control Program. Proper configuration ensures maintainability, system longevity, and regulatory compliance.

Step 2 – Rebar Layout and Preparation

Description:
This image shows the rebar reinforcement phase performed after the grease interceptor has been installed and connected. The tank is already set at its final elevation, and this step focuses on preparing the structural pad that will encase and protect the installation.

Reinforcing steel is placed according to approved structural plans, typically spaced between 6 and 12 inches on center, and supported on plastic chairs to maintain correct elevation. This ensures the rebar remains fully embedded in concrete, preventing corrosion and providing long-term durability.

The steel grid provides load distribution and structural strength, allowing the pad to resist cracking, settlement, and deformation from vehicle or equipment loads above the installation area.

Purpose:
This phase ensures the concrete pad will provide a stable and reinforced surface protecting the interceptor below. The work follows ACI 301, ACI 318, FBC Chapter 19, and FDOT Class II concrete standards, ensuring a durable, code-compliant installation for commercial grease waste systems.

Image: Rebar Layout and Preparation.JPG
Caption: Reinforcement installation around the set interceptor before concrete pour.

Structural Reinforcement

After the plumbing inspection was approved, a vapor barrier was installed, followed by a rebar grid to reinforce the concrete pad. This step ensures long-term durability and structural integrity for the restored kitchen floor

Concrete Pour and Flooring Replacement


Once the reinforcement was complete, concrete was poured to restore the floor slab. After curing, new tile flooring was installed to match the existing finish and maintain a clean, functional appearance. Access to the interceptor covers was preserved for future maintenance and cleaning.

Outcome

The new grease interceptor system was successfully installed, inspected, and approved by the local authorities. Diana’s Shawarma now operates with a code-compliant grease waste management system, designed to effectively separate solids and FOG (fats, oils, and grease) before discharge to the sanitary sewer.

This project showcases Vasani Consulting’s construction expertise, providing licensed plumbing and general contracting services to deliver turnkey installation solutions for restaurant grease management systems across South Florida.