Reinforced Concrete Septic Tank Design

Structural design of the septic tanks shall be by calculation or by performance.

Reinforced concrete septic tank design.

Generally two compartments are provided with a partition wall at a distance of 2 3 rd of the inlet. We are the largest manufacturer of septic tanks in the western united states. Rice concrete limited produces both one and two section septic tanks ranging in size from 2840 litres 625 gallons to 4800 litres 1056 gallons in both standard and low profile design. Septic tanks are the first vital element of an onsite wastewater treatment system.

2009 parts i iv. The design depends on the location of tanks i e. The tanks can be made in different shapes usually circular and rectangular shapes are mostly used. The design of reinforced concrete water tank is based on is 3370.

Overhead on ground or underground water tanks. Jensen precast has been making septic tanks since 1968. It is rectangular in plan and length is 2 4 times of breadth. The tanks can be made of reinforced concrete or even of steel.

A wall with openings between the floor and roof of the tank separates the chambers. Some septic tank design has 2 chambers while others have 3. Septic tank should be watertight and constructed of bricks masonry stone masonry or sometimes concrete. The following design characteristics have a critical impact on the performance of on site wastewater tanks.

The septic tank used in conjunction with one of the many treatment and dispersal options comprises a complete onsite wastewater. The walls and floor of the tank are 10 cms 4 inches thick reinforced concrete providing sufficient strength to withstand water pressure and a reasonable amount of earth movement. The reinforcing steel is a mesh of 8 mm diameter reinforcing bars spaced 15 cms 6 inches apart and built into a mesh box. These reinforced concrete septic tanks are manufactured in compliance with csa b66.

Concrete strength reinforcing steel placement and openings shall also be considered in the design. Procast products concrete septic tanks are constructed as required in california as a two compartmented vessel and meets the uniform plumbing code requirements in most counties. The physical design requirements include. Septic tank design it has one end connected to an inlet from the toilets and sometimes an outlet connected to the drain field.

Capacity shape compartments influent and effluent pipes baffles and outlet devices and openings in top slab.