Specifications

Multi-Flo Design Manual Revised August 1, 2002
Consolidated Treatment Systems, Inc. Page 7
flow. These parameters are based on number of patrons, square footage of retail
space, restaurant seats, and other indicators of potential wastewater generation. Some
codes may consider alternative values to establish flow, such as actual water use for
similar facilities, but most codes are prescriptive in setting design flows.
Listed in Table 4 are recommended sizing and components for single-family dwellings
based on a design flow of 150 gpd/bedroom.
Multi-family occupancies are more susceptible to abuse by tenants, who may be
unaware that they are using onsite wastewater treatment. For these occupancies, a
pretreatment tank may eliminate maintenance issues related to grease and solids put
into the system. Table 5, which is based on a flow of 150 gpd/bedroom, illustrates
recommended components, volumes, and ratings for multiple family dwellings.
Table 4—Multi-Flo Sizing for Single-Family Dwellings
Number of
Bedrooms
Garbage
Disposal?
Recommended Size
of Pretreatment Tank
Required Capacity of Multi-Flo
(gpd)
1-2 No Optional 500 gpd
1-2 Yes Optional 500 gpd
3 No Optional 500 gpd
3 Yes Optional 500 gpd
4 No Optional 600 gpd
4 Yes Optional 600 gpd
5 No Optional 750 gpd
5 Yes 500 gallon 750 gpd
Table 5—Multi-Flo Sizing for Multi-Family Dwellings
Number of
Bedrooms
Served
Recommended Size
of Pretreatment Tank
if needed, (gal)
Required Capacity
of Multi-Flo
(gpd)
1 Optional 500
2 500 500
3 500 500
4 500 600
5 500 750
6 750 1000
7 750 1200
8 750 1200
9 750 1500
10 1000 1500