Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Sanitary Drainage Systems

The purpose of a sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment

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ASTM B306 Copper Tubes for Drain, Waste and Vent - Dimensions and Working Pressures

Dimensions of copper tubes ASTM B306 Drain Waste and Vent - DWV.

California Pipe Flow Metering Method

Calculate the discharge length from the open end of a partially filled horizontal pipe.

Cast Iron Soil Pipes - Dimensions

Dimensions of cast iron soil pipes

Cross-Contamination Control

It is fundamental to keep the potable water in the water supply systems uncontaminated

Drain Pipes and Vent Stacks

Drain pipes and vent stack sizing.

Drain Waste and Vent Pipe Hanger Spacing

Support of Drain Waste and Vent - DWV - pipes

Drainage Fixture Unit Values - DFU

DFU are used to determine the drainage from fixtures and required capacity of sewer service systems

Drainage Fixtures - Unit Loads and Sanitary Piping

Maximum Drainage Fixture Unit - DFU - loads for sanitary piping

Drains and Sewers

Drainage Fixture Units (DFU) connected to building drains and sewers

Epoxy Pipes - Support Spacing

Support spacing for reinforced Epoxy fiberglass pipes.

Horizontal Storm Drain Piping

Capacity of horizontal storm drain piping


The Legionella Pneumophila bacterium thrives in water supply systems and air conditioning systems - and may cause the Legionnairs disease.

Plumbing Codes

Plumbing or sanitation codes are a set of rules and regulations imposed by cities, counties or states

Rainfall Draining of Roof Areas and Vertical Downspouts

Capacity of vertical downspouts when draining roof areas in rainfall

Rainfall on Roofs and Gutter Slopes

Draining of roof areas and recommended gutter slopes

Rainfall Units Converter

Convert between different rainfall units

Riser Diagrams

Plumbing sanitary and water riser diagram - example

Septic Systems

A septic system handles the waste from a drain system

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Sewer Pipes - Capacity vs. Slope

Carrying capacities of sewer and wastewater pipes - gpm and liter per second.

Slope of Horizontal Drainage Pipe

Minimum pitch of drainage pipes

Stormwater Conductors

Capacities of roof drains

Volume Flow in Sanitary Drainage Systems

Calculate expected load in sanitary drainage systems

Waste Water - Flow Capacity

In sewage piping and pumping systems the fluid flow rate must be kept within certain limits to avoid operating problems

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3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

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