Unit weight of Raw Sewage (ACI 350)

Question

Unit weight of Raw Sewage (ACI 350)

lexpatrie (Structural)

(OP)

13 Oct 23 17:20

Is the unit weight of raw sewage no longer in the design standard (ACI 350)? I have a 1989 photocopy and there's a section on live loads 2.3.2 that gives unit weights, I can't find this provision in, say, 2001.

hokie66 (Structural) · Answer 1 · 2023-10-13 23:10:16

Probably because everyone should know that sewage is almost all water.

Tstruct (Structural) · Answer 2 · 2023-11-30 08:55:04

@lexpatrie thank you very much for posting this question, you helped me indirectly. I was looking for some authentic source for these unit weights and couldn't find them in newer editions and never looked in such older editions. Can you please mention the clause for my ease?

lexpatrie (Structural) · Answer 3 · 2024-01-27 06:36:44

My copy has a page break so the weights themselves appear on the next page.

CarlB (Civil/Environmental) · Answer 4 · 2024-01-31 20:47:22

ACI 350.4R-04 (2004) gives the same values as posted above, except shows 63-85 pcf for thickened sludge.

lexpatrie (Structural) · Answer 5 · 2024-02-02 13:56:09

Looks like 2004 is the current one? Raw sewage value is the same, 63 pcf.

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Unit weight of Raw Sewage (ACI 350)