ARCHITECT SUPPORT

CORRECT SIZING – A LEGAL REQUIREMENT

Right First Time

Correct Sizing. Assured Compliance.

I.S. EN 1825 parts 1 & 2 requires all grease traps to be correctly sized prior to installation. Sizing is based on the nature and quantity of the wastewater entering the grease trap while taking into account the maximum temperature and flow rate, the density of FOG’s (fats, oils & grease) to be separated and the influence of cleaning  / rising agents. Maximum flow rates of wastewater can be determined by the measurment of (1), FOG producing catering equipment that is discharging into the grease trap or (2), the number of meals being served per day and hours of operation.

Sizing

The sizing calculator below allows specfiers to quickly and easily size a grease trap in strict compliance with I.S. EN 1825 parts 1 & 2.

In step 1, choose the sizing method based on equipment or meals per day. Then input the requested information, click calculate and the formula will provide you with a product code, NS (Nominal Size) and grease trap dimensions.

Alternatively, feel free to contact us. We can assist with every stage of the process from correct sizing and specification to Irish Water approval and installation.

We are happy to discuss your requirements via phone / conference call, at your place of work or at your clients premises.

Selection & Installation Recommendations

  • Determine the correct size by using the free sizing calculator below.
  • The unit will need to be regularly emptied and cleaned so try to locate the trap within easy reach of a large service vehicle. Ensure there is sufficient head room to remove the access lids.
  • If the trap is an underground model provide load-bearing requirements e.g. pedestrian, cars, HGV’s.
  • Ensure a level 150mm concrete base.
  • The unit must be vented to the outside of the building.
  • Sewage systems, waste dispoal units, macerators, vegetable preparation areas and sluice sinks should not be connected to the grease trap.
  • Allowance should be made for the installation of a automated bacterial dosing unit. The daily treatment should carry a DCC or Irish Water permit number.

Free Site Survey 

Call now to book a free survey of your site. Our engineers can assist you with sizing, positioning, design, loading, etc.  

Bespoke Riser

If the existing sewer line is situated more than 350mm below ground level, a riser will be required. This ensures the volume of the grease trap is not compromised. 

Irish Water Application & Approval 

Installing a grease trap without Local Authority consent could result in heavy fines and costly remediation works. Prior to fabrication, we will correctly size your grease trap and make an application to Irish Water on behalf of your client. This is a free service. 

To comply with I.S. EN 1825 parts 1 & 2, we make an application to Irish Water on behalf of the food operator

Sizing Calculator

Provides Size, Specification & Dimensions

The sizing calculator below allows specifiers to quickly and easily size a grease trap in strict compliance with I.S. EN 1825 parts 1 & 2.

In step 1, choose the sizing method based on equipment or meals per day. Then input the requested information, click calculate and the formula will provide you with a product code, NS (Nominal Size) and grease trap dimensions.

Alternatively, feel free to contact us. We can assist with every stage of the process from correct sizing and specification to Irish Water approval and installation. We are happy to discuss your requirements via phone / conference call, at your place of work or at your clients premises.

Business Name (Optional) Business Type Water Temperature Use of Rinsing Agents Indoor or Outdoor Above or Below Meals per Day Average Hours of Operation

Business Type

Water Temperature

Use of Rinsing Agents

Indoor or Outdoor

Above or Below

Meals per Day

Average Hours of Operation

Qs - Maximum Water Flow Rate ft - Factor of Temperature fr - Factor of Rinsing Agents
Qs - Maximum Water Flow Rate
ft - Factor of Temperature
fr - Factor of Rinsing Agents
NS - Nominal Size Product Name Dimensions Cost - Mild Steel Cost - Stainless Steel
NS - Nominal Size
Product Name
Dimensions
Cost - Mild Steel
Cost - Stainless Steel

Business Name (Optional) Business Type Water Temperature Use of Rinsing Agents Indoors or Outdoors Above or Below Ground


Quantity Type of Kitchen Equipment Quantity Type of Kitchen Equipment
Combi-oven Dishwashers
Boiling Pan: 25mm Outlets Boiling Pan: 50mm Outlets
Tilting Boiling Pan: 70mm Outlets Tilting Boiling Pan: 100mm Outlets
Non-Siphonic Rinse Sinks: 40mm Outlets Non-Siphonic Rinse Sinks: 50mm Outlets
Siphonic Rinse Sinks: 40mm Outlets* Siphonic Rinse Sinks: 50mm Outlets*
Tilting Roasting Tins Fixed Roasting Tins
High Pressure Cleaner/Steamers Scrapers
Vegetable Peeling/Rumbler Units Wok Stations
Qs - Maximum Water Flow Rate ft - Factor of Temperature fr - Factor of Rinsing Agents

Business Type

Water Temperature

Use of Rinsing Agents

Indoor or Outdoor

Above or Below

Type of Kitchen Equipment Quantity
Dishwashers
Boiling Pan: 50mm Outlets
Tilting Boiling Pan: 100mm Outlets
Non-Siphonic Rinse Sinks: 50mm Outlets
Siphonic Rinse Sinks: 50mm Outlets*
Fixed Roasting Tins
Scrapers
Wok Stations
Combi-oven
Boiling Pan: 25mm Outlets
Tilting Boiling Pan: 70mm Outlets
Non-Siphonic Rinse Sinks: 40mm Outlets
Siphonic Rinse Sinks: 40mm Outlets*
Tilting Roasting Tins
High Pressure Cleaner/Steamers
Vegetable Peeling/Rumbler Units
Qs - Maximum Water Flow Rate
ft - Factor of Temperature
fr - Factor of Rinsing Agents
NS - Nominal Size Product Name Dimensions Cost - Mild Steel Cost - Stainless Steel
NS - Nominal Size
Product Name
Dimensions
Cost - Mild Steel
Cost - Stainless Steel

Technical Specifications

TECHNICAL DATA SHEET

Connection Detail for Above Ground Inlet Pipe.

TECHNICAL DATA SHEET

Connection Detail for Below Ground Inlet Pipe.

TECHNICAL DATA SHEET

Connection Detail for Basement Trap.

TECHNICAL DATA SHEET

Connection Detail for Load Bearing Covers

TECHNICAL DATA SHEET

Connection Detail for
Dosing Pump