Louisiana Administrative Code
Title 51 - PUBLIC HEALTH-SANITARY CODE
Part XIV - Plumbing
Chapter 7 - Sanitary Drainage
Section XIV-731 - Sumps and Ejectors

Universal Citation: LA Admin Code XIV-731

Current through Register Vol. 50, No. 9, September 20, 2024

A. Building Drains below Sewer. Building drains which cannot be discharged to the sewer by gravity flow shall be discharged into a tightly covered and vented sump from which the liquid shall be lifted and discharged into the building gravity drainage system by automatic pumping equipment or by any equally efficient method approved by the plumbing official.

B. Check and Gate Valve Required. A check valve and a gate valve shall be installed in the pump or ejector discharge piping between the pump or ejector and the gravity drainage system. Such valve shall be accessibly located above the sump cover required by §731. A of this code, or when the discharge pipe from the ejector is below grade(G), the valves may be accessibly located outside the sump below grade(G) in an access pit with removable access cover.

C. Sewage Ejector Sump Construction. Sumps may be constructed of cast iron or monolithically poured reinforced concrete. When concrete sumps are used, a cover attachment ring shall be embedded in the concrete in such a way as to be watertight and gastight. The attachment ring shall be designed to fit the sump cover and allow a gastight and watertight seal to be made. Other engineered sump construction and materials may be accepted by the plumbing official when designed to be watertight and gastight and otherwise meet the requirements of this Section.

D. Venting. The system of drainage piping below the sewer level shall be installed and vented in a manner similar to that of the gravity system.

E. Duplex Equipment. Sumps receiving the discharge of more than six water closets shall be provided with duplex pumping equipment.

F. Vent Sizes. Building sump vents shall be sized in accordance with Table 937.B of this code but shall in no case be sized less than 1 1/2 inches.

G. Separate Vents. Vents from pneumatic ejectors or similar equipment shall be carried separately to the open air as a vent terminal (see §927. A of this code).

H. Connections. Direct connection of a steam exhaust, blowoff, or drip pipe shall not be made with the building drainage system. Waste water when discharged into the building drainage system shall be at a temperature not higher than 140°F (60°C). When higher temperatures exist, proper cooling methods shall be provided.

I. Pumping Station. Pumping stations shall comply with the following.

1. A pumping system shall include the sump pump, sump pit and discharge piping as specified below:
a. Sump Pump. An automatic water pump for the removal of drainage from a sump, pit or low point in a residential, commercial or industrial property. Capacity and head shall be appropriate to anticipated use requirements.

b. Sump Pit. The sump pit shall be not less than 18 inches (457 mm) diameter and 24 inches (610 mm) deep, unless approved by the plumbing official. The pit shall be accessible and located such that all drainage flows into the pit due to gravity. The sump pit may be constructed of tile, concrete, steel, plastic or other approved materials. The pit bottom shall be solid and provide permanent support for the pump. The sump pit shall be fitted with a removable cover adequate to support anticipated loads in the area of use and to prevent refuse from entering the pit.

c. Discharge piping. Discharge piping shall meet the requirements of §731. B of this code.

2. Electrical service outlet when required shall meet the requirements of the NFPA 70 or local codes.

3. Sumps which receive and discharge liquid wastes or raw sewage from plumbing fixtures shall meet the applicable requirements of §731. C of this code.

J. Maximum Effluent Level. The effluent level control, etc., shall be adjusted and maintained to at all times prevent the effluent in the sump from rising to within 2 inches (51 mm) of the invert of the gravity drain inlet into the sump.

K. Ejector Connection to the Drainage System. Pumps when connected to the drainage system shall connect to the building sewer or shall connect to a wye fitting in the building drain a minimum of 10 ft (3048 mm) from the base of any soil stack, waste stack or fixture drain.

L. Macerating Systems. Macerating toilet systems shall comply with ASME A 112.3.4 and shall be installed per the manufacturer's instructions. The outlet piping from the grinder pump shall not be less than 3/4-inch and shall be fitted with a check valve and a full-flow gate or ball valve.

AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).

Disclaimer: These regulations may not be the most recent version. Louisiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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