SPDI: Sanitation (Accessibility Law | Pipe Color Code | Septic Tank)

ACCESSIBILITY LAW

Accessible public washrooms and toilets shall permit easy passage of a wheelchair and allow the occupant to enter a stall, close the door and transfer to the water closet from either a frontal or lateral position.

1.70 x 1.80 mts

minimum area of accessible water closet stalls

1 movable grab bar

1 fixed to the adjacent wall

____ shall be installed at the accessible water closet stall for lateral mounting.

fixed grab bars on both sides of the wall

____ shall be installed for stalls for frontal mounting

2.25 sq.m.

a turning space of ___ shall be provided

1.50 m

a minimum dimension of __ for wheelchair shall be provided for water closet stalls for lateral mounting

one (1)

the minimum number of accessible water closets on each floor level or on that part of a floor level accessible to the disabled shall be __ where the total number of water closets per set on that level is twenty (20)

two (2)

the minimum number of accessible water closets on each floor level or on that part of a floor level accessible to the disabled shall be __ where the total number of water closets per set on that level exceeds twenty (20)

equilateral triangle

signage for men’s washroom door

circle

signage for women’s washroom door

0.75 mm

minimum thickness of washroom signages

0.45 m

maximum height of water closets

1.20 mts

maximum height of flush control

0.80 m

maximum height of lavatories

0.48 m

maximum height of urinal lip

WHITE

Pipe Color Code of STEAM - HIGH PRESSURE

BUFF

Pipe Color Code of STEAM - EXHAUST SYSTEM

BLUE

Pipe Color Code of WATER - H.P. & L.P FRESH WATER

GREEN

Pipe Color Code of WATER - SALT WATER

BRASS BRONZE

Pipe Color Code of OIL - DELIVERY

YELLOW

Pipe Color Code of OIL - DISCHARGE

GRAY

Pipe Color Code of PNUEMATIC PIPING

BLACK

Pipe Color Code of GAS, FUEL OIL, & REFRIGERATION PIPING, PIPES AND FITTINGS

SEPTIC TANK

It is a liquid-tight structure, with inlet and outlet connections, which receives raw sewage. It is basically a sewage settling tank in which raw sewage is retained for a specified period of time, usually 24 hours. The primary purpose is to act as a settling tank and to break up solids so that the resulting effluent will not clog the pores of the soil in the leaching field.

BIOLOGICAL TREATMENT

Sewage effluent (fecal matter) is subjected to decomposition by natural, bacterial processes. The bateriaa present in the liquid are anaerobic (they thrive in the absence of free oxygen). The decomposition, or treatment, of the sewage under the anaerobic conditions is termed septic, hence the name of the tank.

SOLIDS REMOVAL

The residual material, composed of inert solid material that remains in the tank, must be pumped out after a period of time. Space must be provided in the septic tank to store this residue between the cleanings; otherwise, sludge and scum eventually will be scoured from the septic tank and may clog the disposal field.

Sludge

It is defined as the accumulation of solids at the bottom of the septic tank.

Scum

It is a partially submerged mat of floating solids that forms at the surface of the fluid in the septic tank.

SEPTIC TANK LOCATION

Should be chosen so as not to cause contamination of any well, spring, or other source of water supply (TABLE B-5 OF RNPCP)

TANK CAPACITY

It is not only desirable from a functional viewpoint but is good economical design practice.

TABLE B-2 of RNPCP

The recommended liquid capacity of septic tank is provided in ____.

TABLE B-5 of RNPCP

The maximum limit of septic tank is provided in ____.

TANK MATERIAL

Constructed materials must not be subject to excessive corrosion or decay.

SECTION B 5.13.1 of RNPCP

Acceptable materials for septic tanks are provided in ____.

2 manholes, 20 inches

TANK ACCESS: According to Section B 5.5 RNPCP, at least ____ with a minimum dimension of ____

0.6 m - 1.8 m (24” to 72”)

TANK PROPORTIONS: liquid depth range (min to max)

0.9 m

TANK PROPORTIONS: minimum width

1.5 m

TANK PROPORTIONS: minimum length

30%

Approximately ___ of the total amount of scum will accumulate above the liquid level

70%

____ of the total amount of scum will be submerged.

2”

the minimum distance at the top of the tank for free passage of gas through the tank back to the inlet and the building drainage system (Section B 5.9 RNPCP)

INLET COMPARTMENT

also known as the DIGESTIVE CHAMBER; 2/3 of the total volume (minimum of 2 m³ liquid capacity)

SECONDARY COMPARTMENT

also known as the LEACHING CHAMBER; 1/3 of the total volume (minimum of 1 m³ liquid capacity)

1 digestive chamber

2 leaching chamber

modern requirements of septic tank compartments