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I� o I--- ;: _ �` . I v� /, I COVER 1,499.75 SQ. FT
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1.FENCE INSTALLED WITH
I LAIIIDSCAPING SUMMARY
! i I ! '' i 'll.0 1 I 'VYNL PRIVACY SLATS. , INSTALL 6" v � i,
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i i - 6 Q / y TOTAL DEVELOPED SITE AREA: 32,714.96 SQ. FT.
------------ 167 L.F. ❑F 12" /.'- / , • TOTAL ROOFED OVER IMPROVE
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- i CHIPSEAL EXIST. L , �/ // ///i/ ////�/// / / /�'�'! 1 ,y ELECTRICAL t IMPROVEMENTS: 9,000.00 SQ. FT.
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APRIL 8 193 ;,,, _._ ..._ T _... - -- - --- - _ NOTES,
1t :, 11 J %'F-' I, � ii: - -.'':, C PORTE ; Subject to Cti of La Port Ord anc sL
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2 3 R`D STREET HccF Na, Ga 63a58
d Zone as
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__.___ _ Map 48201C0945 delineated
tl Dated June 18a 2007.
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__ 3 �� .THIS PROPERTY IS IDENTIFIED UNDER
!__ ( HARRIS COUNTY APPRAISAL DISTRICT
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HYDRAULIC CALCULATIONS FOR THE PROPOSID SITE � I .;J:'^ PROPOSED: - -�"� i it .
1-F.H.
at Phoenix Services 1-8'x6' TS&V
Prepared By: Phil Johnson 10'-6' F H LEAD
RATIONAL METHOD FOR RUNOFF: Q = CIA
C = 0.75 FOR CHIP SEAL, 0.8 FOR CONCRETE AND 0.3 FOR GRASS
I=655 AND A IS IN ACRES THEREFORE Q IS IN CUBIC FEET PER SECOND (CFS)
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MANNINGIS EQUATION: Q = A1.486/NR2/3S 1/2 (FOR SIZING PIPE§)
Q (CFS), A (AREA OF PIPE IN SQ FT), R (HYDRAULIC RADIUS IN FT),
S (SLOPE IN FT PER FT)
NUMBER INLET/MH C I A Q
A INLET 0.76 6.55 0,1939 0.97 ,
B INLET 0.71 6.55 0.085 0.40
INLET TO INLET QT DIA. TYPE A N R S Q V(F/S)
A B 0.97 12 HDPE 0.785 0.011 0.2500 0.0032 2.382 3.03
B OUT 1.36 12 HDPE 0.785 0.011 0.2500 0.0032 2.382 3.03
ORIFICE DETERA9NATION
East Outlet Pipe to 23rd Street
Q-0.3*6.55*0.7025 = 1.3804 cfs
h=19.75-(17.88+0.25) = 1.62 (for 6" pipe)
h=19.75-(17.88+0.33) =1.54 (for 8" pipe)
Q=CA(2gh)0.5
Where: Q is orifice flow, cfs - (Allowable)
C is orifice coefficient (use 0.6 a/o 0.8)
A is orifice area, sf
g is Gravitation constant, 32.2 ft/sec2
h is head on orifice measured from the centerline
Q C 2gl/2 h(feet) h1/2 Calculated A D(inches) Use
1.3804 0.6 8.025 1.62 1.273 0.23 6.43 6"
1.3804 0.6 8.025 1.54 1.241 0.23 6.51 611
1.3804 0.8 8.025 1.62 1.273 0,17 5.57 611
1,3804 0.8 8.025 1.54 1.241 0.17 5.64 6"
DETENTION SUMMARY
NEW IMPERVIOUS AREA:
DETENTION REQUIRED:
0.00 X 0.2 = 0.00 AC -FT
0.00 AC -FT X 43560 =
EXISTING DETENTION
WATER LEVEL:
TOP OF INLET:
EXISTING DETENTION:
PROPOSED DETENTION:
WATER LEVEL:
TOP OF INLET:
PROVIDED DETENTION
PIPE SIZE LENGTHS
12" 120 L.F.
USE A 6" FLOW RESTRICTOR
0.00 SQ, FT.
0.2 AC-FT/AC
0.00 CU. FT
20.60
19.93
2260.20 CU. FT.
20.73
19.75
3175.65 CU. FT.
MINIMUM
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--------- __.---_--._---------_-------_-._------_,:_ ._, RIVEWAY WIDTH CHAN ED FROM 3 T 40
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i." THIS IS TO CERTIFY THAT THE CITY OF LA PORTE, TEXAS HAS APPROVED THIS SITE PLAN
DEVELOPMENT ❑F THE PROPOSED MINOR DEVELOPMENT SITE P1.
LAN FOR PHOENIX SERVICES --.--- - --
BEING LOTS 25-32 & EAST 59' OF LOTS 1-8, BLOCK 673, AND ALLEY CONTAINED THEREIN, MINOR DEVELOPMENT SITE PLAN
AND THE NORTH 47.50 FEET OF 'B' STREET, CALLED A 0.9183 ACRE TRACT OUT OF THE
T.W. LEE SUBDIVISION, IN THE RICHARD PEARSALL SURVEY, A-625, SI i i__ ADDRESS: 3020 North 23rd St,
HARRIS COUNTY, TEXAS IN CONFORMANCE WITH THE LAWS OF THE STATE OF TEXAS ❑ W I I E R: Phoenix Services
AND THE ORDINANCES OF THE CITY OF LA PORTE, DEVELOPER: Phoenix Services
'0i',.IE: L1
BYI_ �'
ATTE +�____qt
__ TYPE ❑� DEVELOPME(�,1T1 Yard Space & New Building
BY+__ __ _ _ _ __ _ _ DIRECTOR, Ei G11'`AEER! H, CARLOS SMITH .
PLANNING DEPARTMENT < PLAT REFERENCE VOLI 67, PG. 1, HLC.D.R. )
1 COURSE INVERSE PENETRATION ASPHALT LA PORTE CITY ENGINEER
.
`� W/ COATED ROCK
FILING DATE:
PAVING SECTION
N.T.S.
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***".........................
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ILLIP EUGENE JOHNSON
...*............***.......
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58605 :!� 1
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SITE PLAN ACCURACY CERTIFICATE
I, PHILLIP EL J❑HNSON, AM REGISTERED UNDER THE LAWS OF THE STATE OF TEXAS
TO PRACTICE THE PROFESSION OF ENGINEERING AND HEREBY CERTIFY THAT THE
ABOVE SITE PLAN IS TRUE AND CORRECT, AND THAT ALL BEARINGS, DISTANCES,
ANGLES, CURVE RADIUSES, AND CENTRAL ANGLES ARE ACCURATELY SHOWN _
ON THE PLAT, R REERD
0� L11)
REVO1-15-01
REVISED 10-25-07
P L P EL J❑HNSON REVISED 10-09-07
- -- REVISED 8-21-07
--- -------- REVISED 8-16-07
TEXAS RE STEM NO. S8605 REVISED 4-24-06
REVISED 4-11-06
REVISED 2-16-06
D/W, ADDRESSES, SHED