SW5190701_Calcs_20190826

CSIDESIGN &
ENGINEERING, RLLC
CLIENT -FOCUSED • COMPREHENSIVE • COST-EFFECTIVE
2537 E. L YON STAT/ON RD, STE 102
PO BOX 361
CREEDMOOR, NC 27522
919-625-7368
SILER SQUARE
SIA
502 West Third Street, Siler City NC 27344
ENGINEER of RECORD: Chad E. Abbott, PE
[e-mail] / 919-625-7368
MAY 20, 2019 (Original Submittal)
JUNE 17, 2019 (2ND SUBMITTAL)
August 26, 2019 (ADDITIONAL ITEMS FOR STATE PERMTTING)
1

CSIDESIGN &
ENGINEERING, RLLC
CLIENT -FOCUSED • COMPREHENSIVE • COST-EFFECTIVE
2537 E. L YON STAT/ON RD, STE 102
PO BOX 361
CREEDMOOR, NC 27522
919-625-7368
EXISTING IMPERVIOUS
AREA DELINEATIONS

PRE —DELINEATIONS
2019-05-01 ABA
TOTAL PROPERTY AREA: ±1 01 1017 SF
TOTAL EXISTING IMPERVIOUS AREA: ±45,245 SF
(44.79%)
±28 843 SF
ASPHALT
±174 SF
SHED
±2 , 542 SF
ASPHALT IN ROW (NOT ADDED
TO EXISTING IMPERVIOUS TOTAL)
/705�-
o/'100
00
✓% �oo---'
QO �00
/ o
1

CSIDESIGN &
ENGINEERING, RLLC
CLIENT -FOCUSED • COMPREHENSIVE • COST-EFFECTIVE
2537 E. L YON STAT/ON RD, STE 102
PO BOX 361
CREEDMOOR, NC 27522
919-625-7368
SCM DRAINAGE MAP
AND SUPPORTING
MAPS FOR OFFSITE
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40 AC)
SF (0.28 AC)
�,954 SF (0.113 AC)

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CSIDESIGN &
ENGINEERING, RLLC
CLIENT -FOCUSED • COMPREHENSIVE • COST-EFFECTIVE
2537 E. L YON STAT/ON RD, STE 102
PO BOX 361
CREEDMOOR, NC 27522
919-625-7368
BORING INFORMATION
FOR SHWT
REQUIREMENTS

HYDRO
ENGINEER5
,/'--� -min • '� i�-in"
■
— WM FUJRTH STREET
10' L":/Typg i.:Yy0g1
\ I
B-5 a-i" i�e'386 .r I 1
1 I \\\ �■ � ae � i 1
Fi xi,tln ��
PUtl , i � ■■■, { i 1
r ,■ \ N i I
rr � !F■■ I ��e Rio � �r j - ' + . -, + � I I
•tr I i �� B-4 t`, r' I I 1
■ I I, B-8 I j
■� I 11r', B-3 �► Till,
I
1 ukil r---mepark lki li cc
�■ as �■ � s�_n,
iEL � 1 I ■ � ■ � �J I� {~ �
■` I I B-2 t' B-9 fir, s�
' ■r ' o I I rw,i ale ■t ■ # I r
■■ r�l� ■ —V I II 4
I m I ■L I I ff 1
,■ I ! lr I ■ \ 45
Biil ing
II TM Q
\ EAh [ne I I =
Fdam
I
I I I
Swee
`zer
II L- - - - _ __ _-_- _ _--- _ _
LEGEND: -$� Soil Test Boring
0 25 50 100 150
Approximate Scale: V=50'
Siler City School Square
Figure 3: Boring Location Plan Siler City, North Carolina
Geo-Hydro Project Number 181093.20

Test Borin Record HYDRO
B-3 g ENGINEERS
Project: Siler City School Square
Project No: 181093.20
Location: Siler City, North Carolina
Date: 11/1/18
Method: HSA- ASTM D1586
GWT at Drilling: NE (Caved at 14.5 feet)
G.S. Elev: 626
Driller: EDPS (Auto -Hammer)
GWT at 24 hrs: N/A (Boring BackfiIled)
Logged By: BP
L
o
Standard Penetration Test
LL
E
Description
N
(Blows/Foot)
0
CO
0 10 20 30 40 50 60 70 80 901 0
Topsoil (Approximately 3 inches)
Stiff to very stiff red -brown, tan, and black
625
fine to medium sandy silt (ML) (RESIDUUM)
10
40
5
9
620
24
10
26
615
Hard to very hard red -brown, tan, and black
fine to medium sandy silt (ML)
15
36
610
20
51
Ak
Boring Terminated at 20 feet
605
Remarks:

CSIDESIGN &
ENGINEERING, RLLC
CLIENT -FOCUSED • COMPREHENSIVE • COST-EFFECTIVE
2537 E. L YON STAT/ON RD, STE 102
PO BOX 361
CREEDMOOR, NC 27522
919-625-7368
OUTLET PROTECTION
CACLS

J� L �ST- 1
Roe
10
qo
3 0.q,5
Outlet W = Do + La
pipe
diameter (Do)
�a —++
T ilwater < 0.5Do
a Z 1' — 70
o ty `gal
60
vele
50 i.
rt 1
Q A
50 100
Discharge (ft3/sec)
200 500
Appendices
a>
N
2
Cn
a
cTs
a
0
1 LO
0
1000
Curves may not be extrapolated.
Figure 8.06a Design of outlet protection protection from a round pipe flowing full, minimum tailwater condition (TW < 0.5 diameter).
Rev. 12/93 8.06.3