HomeMy Public PortalAboutStorm Drain Manhole (2)Manhole frame & cover
Street Grade
3/4' Round
galvanized steel
steps 16"o.c.
SECTION N -M -P-0
Projected on P -P-0
Concrete ring &
reducer.
6,E bars opti nal fillet
5'x2" F Di --"j F
Pipe seat
station Pt
3- D bars,3"o.c.
continue 6"o.c
02
PLAN
PLAN
(Shaft not shown)
F and T is shown hereon.
Tie bars F bars
2'-10 i/2" with paved st.
3'-e" with unpaved st.
5'x 2" Pipe seat
0 bars
Tie bars
Fba
Tie bars.
4, 18"o.c. both ways,to be
used when 02 is 60' or over.
3- 4J bars, 4'-8"long,3"o.c., continue
additional bars 6"o.c.to inside edge
of material.
Ang/e ,QRound to R=3"
,o
,9 c.ilvyQ
PLAN
SECTION G -G
omit this step in paved
baree
18'for pave st.
26" for unpaved st,
r -
NOTES'
0
iD
Street Grade
4
optional outside
toce of concrete
4 H bars
3'-0 long.
Concrete rings
5xl ring seat
For paved street
g H bars
variable
E bars
0 bars
DETAIL M
(See note 5 1
5"
Level „ Ac• to provide level pipe seat
]variable
Seat for sha
when top is not level
Dbars — 5'k2"pipe seat.
unpaved
MIN
TABLE OF VALUES FOR F
02,E
F
07
F
39"
6 V2
12 l/3/2"
13 1/4" _
14'
7
84"
42;,
45 ^T
4$'
_ 511",,-8
_57 _9
6C,"
69
—72
7 I/2
3/4"
8" _102;;
9
V4
IOV''qq _132"
O 3/4"-144"
II"—
9 0"
— 96"
_J5
—114„
12Q
I/?",_,
I76 1%
17, —
=17111/2 --
—
18" —
Build up deck of manhole
LONGITUDINAL SECTION
TABLE OF BAR SIZES
D9or B
A 8,B bars
Dor F bars
12- 39"
+*56)3
4 6it
42"-84"
-n6® 3
# 5& 6
90'-I44'
#7C 3
wr 6@ 6
TABLE OF VALUES FOR T
B T B T
I2;' 4 60' 9 1/2—
_15 _4 l/4'_ 63'r 10"_
18 4 I/2'_ 6 6"_10 I/4'.__
21" _ 5' _ 69" 10 VA'
24" 5 1/4' _ 72" — I I
_27" _5 I/2" 78" —II 3/4"-
_30 _ 6 84-12 1/2:-
33" 6 1/4"- 90' i3 I/4
—36,° l'T 96" T 14 —
—39 _ 7 102"—f5 1/2"-
—_42" _7 I/2" I OB"` 16' —
45" 7 3/4" 1 14' 16 12"—
_
—48„ B 120" 17" _
8 V2"_ 1 26" _ 17 -
54 9 132" 17 1/2
57" 9 14-138" 17 I/2'_
144' 18"
values for A,B,C,01i02, Elevation R, and Elevation S ore shown on the Plon. Table of values for
2. If laterals enter on both sides of manhole ,access shaft shall be located on side receiving the smaller lateral.
3. Center of manhole shaft shall be located over centerline of storm drain when DI is 48" or less, in which case place 4 E
bars symetrically around shaft 45°with centerline.
4. Length of manhole may be increased to meet pipe ends, but any change in location of spur must be approved by the City Engineer.
5. when depth of manhole from street to top of box is less than Z-101/2" for paved street or 3'-6"tor unpaved street construct monolithic
shaft as per Detail M. Construction of shaft as per Detoil M for any depth of manhole is optional .when D. 4 8" or less, center of shaft
shall be located as per Note 3.
6. Reinforcing steel shall be straight bars i/2" clear from face of concrete unless shown otherwise. Tie bars shall be 3 and spaced
18"o.c. or less. Steel schedule detailed on plan.
7. Embedment P shall be 5" for 0- 96" or less and 8"for D over 96"
8. Steps shall be 3/4' round,galvatrrized steel and anchorednot less than 6"in the walls of structures. unless otherwise shown, the
spacing shall be 16"o.c..The lowest step shall be not more than 2' above the invert.
9. Rings, reducer and pipe for access shaft shall be seated in 1:2 mix mortar and neatly pointed or wiped inside shaft.
O. Floor of manhole shall be steel -troweled to spring line.
I I. Body of manhole,including spur,shall be poured in one continuous operotion,except that a construction joint at the spring line
with a longitudinal keyway is permitted.
12. Elevations applies at center of main line on prolongation of invert spur.
13. USE 560-8-3250 CONCRETE. •
SAN MATEO
STORM DRAIN MANHOLE
CALIFORNIA
DATE
1973
DRAWN BY
RUJ
CHIC. BY
JEG
APPROVED
CITY ENGINEER
PLAN CASE
3
DRAWER
SHEET
128