Transcript AESA-PSD TSitsernavank School PSD

Armenian Engineers and
Scientists of America
www.aesa.org
(818) 547-3372
Civil Engineering Committee
Dzidzernavank School
Project
Part-I
Designed for 50 Students and Office
Personnel of the Dzidzernavank Village
School in Kashatagh, Artcakh – Armenia
Designed By:
Hrand Safarian, P.E.
(CE) State of California-USA
[email protected]
Phone: (818) 708-0864
Design Date:
June 21, 2008
PSD-Tsitsernavank, Continue
June 21, 2008
Revision:
CODE REFERENCES AND DESIGN SOURCES :
*
City of Los Angeles Building Code –LABC and City of Los Angeles
Plumbing Code-LAPC
* City of Los Angeles Amendments for the 2007 California Plumbing
Code-CPC Appendix K- Private Sewage Disposal Systems
* International Private Sewage Disposal Code-IPSDC
International Code Council –ICC
* Other Counties Codes.
* Civil Engineering Design Data Book.
CONTENTS :
GENERAL INFORMATION - Received from Site :
Tsitsernavank Village and School Photos.
Proposed PSD Site Location and Soil Type.
PART-I : SEPTIC TANK CAPACITY DESIGN: CRITERIA , SIZE, SHAPE
AND DETAILS .
PART- II : DESIGN CRITERIA AND GENERAL NOTES.
PART-III : SEPTIC TANK STRUCTURAL DESIGN :
MATERIAL , DETAILS AND SKETCHES.
PART- IV : SEEPAGE PITS or /and DISPOSAL FIELD/LEACH LINES
DESIGN: W/SKETCHES
Proposed Toilet Room Location
Proposed PSD Location
The present School Buildings
Being Renovated
Homes
Ground Composition at the PSD Vicinity
Ground Surface
50% Clay – 50% Sand
60% Sand- 40% Conglomerate of:
20% Clay, and 20% dirt
30 cm
250
cm
4
Meters
80% Rocks (big and small)
20% Conglomerated dirt
120
cm
350 Meters
PART-I :
SEPTIC TANK CAPACITY DESIGN: CRITERIA , SIZE, SHAPE
AND DETAILS .
Hrand’s Preliminary Provided Guide Dated March 14, 2008:
Page: PI 1-3
Septic Tank Design Criteria:
2008 City of Los Angeles Plumbing Code
Amendments for the 2007 California Plumbing Code:
Page : PI 4-7
SEPTIC TANK- DESIGNED. DETAILS & SKETCHES:
Page: PI 8-8
PSD-SEPTIC TANK CALC’S
Liquid Capacity:
Each Student :
20 Gallons (76 liter) Waste per day
Assumed 50 students and office members x 20 Gals/day= 1000 gals (3785 liter)
1000x 1.5 = 1500 gals ( 5678 Liter / 5.7 cubic meter)
Assume the inside septic tank liquid: 4’wide x 5’ depth 10’ long= 200 cubic foot
200x 7.48/gallon/cubic foot= 1500 gallon (5.7 cubic meter) OK
Add 12” on top of liquid.
Septic Tank inside dimensions : 4’x6’x10’ (1.22x1.83x3 M)
Exterior dimensions: 5’x7’x11’ ( 1.52x2.13x3.35 M)
24” or 2’ ( 61 CM) Soil on top.
The depth is 9’ (2.74 M)