NYC 9/11 Public Portal Document
March 6, 1985
Syska & Hennessy
New York Convention Center
Storm Sewer
References: A. Perma-Loc - PVC Sewer/Drain Pipe - Johns-Manville
B. Handbook of PVC Pipe - Design & Construction
1. Pipe: 24 in. Perma-Loc Series 46 ?
2. Soil: Wc = 120 Ib/cu. ft
0
Soil, type - pipe bedding material k
, tz^
Class III. GM, GC, SM, SC
3.- Superload: ■ 600- Ib/sq. f t ■ l-fHH
.Equivalent height hO = 600 Ib/sq ft = 5.0 ft
120 Ib/cu.ft
4. Pipe cover - see sketch Q
Min. hl = 3.66 ft
Max. hl = 6.71 ft
5. -Vertical load on rHastic pipe (prism load)•
W = Wc X H-+ Be Ib/ft
H = 6.71 + 5.0 11.71- ft, say 12.0 ft
€
W - 3067 Ib/ft See Ref. A, table on page 4 -
Soil pressure P = Wc x H = 120 X 12 = 1440 Ib/ft = 10 Ib/sq in.
6. Pipe deflection - modified "IDWA Deflection Formula" - Ref..
B, page 144, Equation No. 25:
DI X K X P X. 100
D 0.149 F + 0.061 El
△Y
'■ f
D2 = lag factor Ref. B, table 26
K = bedding factor It
- El = soil stiffness tl
= pipe stiffness Ref. A . ' ■ -
Ch
A
NYC-WTC_000165039
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