Reinforced Concrete Septic Tank 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.

Reinforced concrete septic tank design.

Structural design of the septic tanks shall be by calculation or by performance. 2009 parts i iv. Jensen precast has been making septic tanks since 1968. These reinforced concrete septic tanks are manufactured in compliance with csa b66.

The design depends on the location of tanks i e. The physical design requirements include. Generally two compartments are provided with a partition wall at a distance of 2 3 rd of the inlet. The septic tank used in conjunction with one of the many treatment and dispersal options comprises a complete onsite wastewater.

Concrete mix design concrete must have a minimum compressive strength of 4 000 psi at 28 days. Concrete strength reinforcing steel placement and openings shall also be considered in the design. It is rectangular in plan and length is 2 4 times of breadth. 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. A wall with openings between the floor and roof of the tank separates the chambers. Septic tank should be watertight and constructed of bricks masonry stone masonry or sometimes concrete. The reinforcing steel is a mesh of 8 mm diameter reinforcing bars spaced 15 cms 6 inches apart and built into a mesh box.

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. Concrete thickness the concrete thickness must be sufficient to meet minimum reinforcement cover requirements and withstand design loading conditions. The tanks can be made of reinforced concrete or even of steel. Unlike steel or high density polyethylene septic tanks concrete septic tanks gradually strengthen with time and are able to withstand extreme load conditions with low susceptibility to damage during backfill.

Capacity shape compartments influent and effluent pipes baffles and outlet devices and openings in top slab. Septic tank design it has one end connected to an inlet from the toilets and sometimes an outlet connected to the drain field. 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. Some septic tank design has 2 chambers while others have 3.

Overhead on ground or underground water tanks.