HomeMy WebLinkAboutR-421237GENERALNOTES
A.
B.
C.
D.
E.
F.
G.
H.
Rockery construction shall be preformed in accordance with the Associated Rockery
Contractor Guidelines.
Rockery construction is a craft. The skill and experience of the builder will largely dictate
the success of the construction.
A rockery is a protective system with respect to weathering and erosion processes
on an exposed soil face.
Slopes above and in front of rockeries shall be level.
Minimum thickness of filter drain rock shall be 12 inches, as specified.
Rockeries should be installed under periodic or full-time observation by the Geotechnical
Engineer, as appropriate.
The dimension of the rocks should extend back towards the cut or fill face to provide
maximum stability.
Rocks should be placed to avoid continuous joint planes in vertical or lateral directions.
Each rock should bear on two or more rocks below it, with good flat -to -flat contact.
I. The Geotechnical Engineer shall observe cuts for the rockery. Additional flattening
of cuts may be recommended by the Geotechnical Engineer depending on the soil
and groundwater conditions observed. Where Native Cuts do not expose competent
Native Soils, additional excavation, as well as addition of reinforcement and Compacted
Structural Fill, may be necessary.
J
K
Reference: Barghausen Consulting Engineers, Inc., Detailed Grading Plan & Site Cross
Sections, dated Decemeber 2021
The following design assumptions were used:
o Internal angle of friction for reinforced soil = 32 degrees
• Unit weight of reinforced soil = 125 pcf
• Maximum exposed rockery height = 5 feet
o Batter of rockery = 1 H : 6V
• Surcharges = 8H psf Seismic Surcharge (per 2018 IBC)
Size
Approximate
Weight (Ib.)
Approximate
Diameter (in.)
1 Man
50-200
12-18
2 Man
200-700
18-28
3 Man
700-2,000
28-36
4 Man
2,000-4,000
36-48
5 Man
4,000-6,000
48-54
6 Man
6,000-8,000
54-60
NOTES
1. Wall alignment and heights to be established
by Contractor / Surveyor.
2. Geotechnical Engineer to confirm Keyway
stability, support characteristics, and overall
global stability prior to construction.
I The Typical Temporary Excavation Guidelines shown
on this sheet cannot be used without confirmation of
soil conditions by the Geotechnical Engineer, at the
time of construction.
;l
Wood or Chain Link :;
Fence (As Required)
NOTE: Fence Support Posts located
in close proximity to back of Rockery
shall be entirely embedded
in Filter Drain Rock (Quarry Spalls).
>C
Guardrail Supports shall be evaluated
separately.
o°° o(D o
° ° o° ° °
° ° ° Q °
° C6 ° 0
0 Oo
1 , ° o oo °0 °
° °°o °
Upper One -Third o
2 Man Rock 6 — ° ° F o o
0
°oo 00
1 o O °
\ ° 0o U
o o
/ � 0 0� o
o
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0.6
Rockery Height , - ° ° off° 0 ° °
H = 6' (Max.) ` °0 00°0 0 0° 0 1
0
o O °
00 0 0 o
Middle One -Third °Oo o ° o° 00 0
\
3 Man Rock ° °oo °
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i ° o o o
00
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o.
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oo oo.0
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o o °oo o 0
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° ° p°oo 0 o o
Lower One -Third ^ °
\ �°
3&4Man Rock -- --� o�� 0° °oo oo°
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12" (Min.) 600°°�0
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NOTE: Rockery Toe Backfil
Al
must be placed during or immediately �°
after Wall Construction.
Level Top Slope
12" of 2" to 4"
Filter Drain Rock
(Extend along entire height
of Rockery)
Competent Cut
(Geotechnical Engineer
to Confirm)
4" Perforated Drainpipe
(On -Grade)
Dense Subgrade Surround with Clean Rock
(Geotechnical Engineer to Confirm)
NATIVE CUT
ROCKERY DETAIL
(WALL 1)
NOT - TO - SCALE
Approximate
Existing Grade
Veathered
Jative Soil
no
TYPICAL TEMPORARY
EXCAVATION GUIDELINES
(SEE NOTE 3)
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