Western Australian Current Regulations

HEALTH (TREATMENT OF SEWAGE AND DISPOSAL OF EFFLUENT AND LIQUID WASTE) REGULATIONS 1974 - SCHEDULE 3

[Reg. 34]

        [Heading inserted: Gazette 15 Dec 1989 p. 4552.]

Concrete covers for in situ septic tanks

        [Heading inserted: Gazette 15 Dec 1989 p. 4552.]

DEPTH 2 000

L x B	FABRIC REINFORCEMENT FOR 2 000 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	F82	F82	F82	F92	F82	F92
3 600 x 1 900	F82	F82	F82	F92	F82	F92
4 200 x 2 200	F82	F82	F82	F92	F82	F92
4 800 x 2 500	F82	F82	F82	F102	F82	F102
5 500 x 2 800	F82	F82	F82	F81	F82	F81

STRUCTURAL NOTES

1         ALL DIMENSIONS ARE IN MILLIMETRES.

2         CONCRETE TO BE GRADE 25.

3         MAX. SLUMP                         (A)         IN WALLS TO BE 100mm.

                                (B)         IN COVERS AND FLOOR TO BE 80mm.

4         CONCRETE WORK TO BE CARRIED OUT IN ACCORDANCE WITH S.A.A. CODE AS 1480.

5         ALL FABRIC IS TO COMPLY WITH A.S. No. 1304.

6         CONCRETE TO BE PLACED USING VIBRATORS.

7         REINF. TO BE HELD IN PLACE USING PLASTIC TIPPED WIRE CHAIRS.

8         UNREINFORCED CONCRETE SUB SLAB 50 mm. THICK MAY BE USED UNDER STRUCTURAL BASE SLAB IF REQUIRED BY UNFAVOURABLE SOIL CONDITIONS.

9         THIS DRG. TO BE READ IN CONJUNCTION WITH PLAN AND SPEC. ON APPLICATION FORM

10         ALL CODES MUST BE LATEST EDITION WITH ALL AMENDMENTS ATTACHED.

ALTERNATIVE REINFORCEMENT

L x B	BAR REINFORCEMENT FOR 2 000 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	C12 AT 400 E.W.	C12 AT 400 E.W.	C12 AT 400 E.W.	C12 AT 300 E.W.	C12 AT 400 E.W.	C12 AT 300 E.W.
3 600 x 1 900	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
4 200 x 2 200	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
4 800 x 2 500	AS ABOVE	AS ABOVE	AS ABOVE	C12 AT 250 E.W.	AS ABOVE	C12 AT 250 E.W.
5 500 x 2 800	AS ABOVE	AS ABOVE	AS ABOVE	C12 AT 200 E.W.	AS ABOVE	C12 AT 200 E.W.

LEGEND

C         COLD TWISTED DEFORMED BARS IN ACCORDANCE WITH AS 1002.

E.W.         EACH WAY.

DEPTH 2 500

L x B	FABRIC REINFORCEMENT FOR 2 500 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	F92	F92	F92	F92	F92	F92
3 600 x 1 900	F92	F92	F92	F92	F92	F92
4 200 x 2 200	F92	F92	F92	F92	F92	F92
4 800 x 2 500	F92	F92	F92	F102	F92	F102
5 500 x 2 800	F92	F92	F92	F81	F92	F81

ALTERNATIVE REINFORCEMENT

L x B	BAR REINFORCEMENT FOR 2 500 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.
3 600 x 1 900	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
4 200 x 2 200	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
4 800 x 2 500	AS ABOVE	AS ABOVE	AS ABOVE	C12 AT 250 E.W.	AS ABOVE	C12 AT 250 E.W.
5 500 x 2 800	AS ABOVE	AS ABOVE	AS ABOVE	C12 AT 200 E.W.	AS ABOVE	C12 AT 200 E.W.

LEGEND

C         COLD TWISTED DEFORMED BARS IN ACCORDANCE WITH AS 1302.

E.W.         EACH WAY.

DEPTH 3 000

L x B	FABRIC REINFORCEMENT FOR 3 000 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	F92	F92	F92	F92	F92	F92
3 600 x 1 900	F92	F92	F92	F92	F92	F92
4 200 x 2 200	F102	F92	F92	F102	F92	F102
4 800 x 2 500	F102	F92	F92	F102	F92	F102
5 500 x 2 800	F81	F92	F92	F81	F92	F81

ALTERNATIVE REINFORCEMENT

L x B	BAR REINFORCEMENT FOR 3 000 DEEP TANK
	R1	R2	R3	R4	R5	R6
3 000 x 1 500	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.	C12 AT 300 E.W.
3 600 x 1 900	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
4 200 x 2 200	C12 AT 250 E.W.	AS ABOVE	AS ABOVE	C12 AT 250 E.W.	AS ABOVE	C12 AT 250 E.W.
4 800 x 2 500	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE	AS ABOVE
5 500 x 2 800	C12 AT 200 E.W.	AS ABOVE	AS ABOVE	C12 AT 200 E.W.	AS ABOVE	C12 AT 200 E.W.

LEGEND

C         COLD TWISTED DEFORMED BARS IN ACCORDANCE WITH AS 1302.

E.W.         EACH WAY.