HomeMy WebLinkAboutB17-0114_C-502_1501879560.pdf z
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08/04/17
AVOID STACKED "COLUMNS"
GREATER THAN TWO ROCKS
BASE ROCK UNDERSIZED
FACING UNITS pVERTICAL
F VERTICAL CH/NK/NG ROCK PROVIDES PRIMARY SUPPORT VERTICAL
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CHINK/NG ROCK \ IL
a 14, INSUFFICIENT SECTION W/DTH
1 1 1•....._ i
1' FaceFaceIMBatter. 4 - Batter. 4 FoceFACING ROCK11111111111- , Batter. 4
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-' TOP OF ROCK SLOPE
TER THAN 6 INCHES
1 �./illi TOWARD FACE
� il CONTACT POINT GREAFROM AVERAGE FACE
2 Min. - 1111110.___WH,‘ FINISHED GRADE AT TOE _ ii
1 4likm*ANK--.11. 11 I FI
al-111 -' ':
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BOTTOM OF KEYWAY 1
10 Min. INSUFFICIENT 7 PPV
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-n EMBEDMENT
1
GRANULAR ROCK BACKDRAIN . II. -' '... I.j 1""I
WIDTH 'B' WIDTH 'B'
- SEE BOULDER SEE BOULDER
CHINKING ROCKS SHALL NOT PROVIDE DESIGN TABLE DESIGN TABLE
PRIMARY SUPPORT OF FACING ROCKS
INCLINE BOTTOM OF FOUNDATION ROCK NO STEEPER THAN 10H.•1 V
CORRECT INCORRECT CORRECT CORRECT /NCORREC T
PART/AL TYPICAL PROFILE SECTION PROPERTIES
NOTES:
EXISTING GROUND 1. Construct rockery and place base and cap rocks
according to Project Special Provision 504. Place each BOULDER DESIGN TA B L E
rock individually by equipment suitable for lifting,
manipulating, and placing rocks of the size and shape MIN. BASE MIN. CUT MIN. ROCK WEIGHT (Ib)
specified. Ensure that each rock is firmly set and WALL MAX. HEIGHT SLOPE**
ROCK WIDTH
\\� \ supported by underlying materials and adjacent rocks. NO. H (FT) BATTER r�
WALL LAYOUT LINE
-;_-_-_____-\\\-!-,-;-__\\\,-;\,
B (FT) CAP ROCK BASE ROCK
iReposition or replace loose rocks. V:H
--->\\\----<\\--------\----\\<(\\\%--\,------\\---\\\\
i\� \\ mo \
\\�\\\\\��\\\ \� \\ \\� � �� �' '�" 2. A maximum tolerance of 6 inches may be applied 1 6.0 3.0 8:1 250 3500
------;\--; \ -"S.\ i \i \ \i\� \ � �� III / III
\\ \i\\ \\ \i\\ i \\ � �;�� �, toward the total base rock width. Use rock with
\ \\_ --\\\�\�\\\i 1.•n sim‘1 0 j! 11 III III-III- minimum L of 5'-6". When L exceeds 5'-6'; two 2 5.0 2.5 8:1 200 3000
TOP OF ROCKERY \\�\\i�\\ �i ����'r:•�� -III / III
�\\\\�\._--;--\\\.;-6 � 44.0 ..���4.1" approximately equal size base rocks may be used,
i1��� 1.�1��. 1��1. - III-III- provided rocks are in contact at two points or more. 3 4.0 2.0 8:1 200 2500
�i\\ � - - 4.417.4"117.47.'
\\ �•• iiipat'al•�% = 1 Do not consecutively place base rocks with widths less
0r�.�l ramal ADS ‘ j.0•r0 j•. -III-III- - than B.
CAP ROCK 1'1 `PW�'1`i`I K�'1`�`�,, erne.4j�/.`��� I III-III- . GEOTEXTILE (DRAINAGE)
111;�*�!����;���� 1��;��,��, (CLASS 2) 3. Place base and cap rocks so that their height
.� ._•.�., ._•.�. 12" (MIN.) TOPSOIL 0.,1.�.."Ari III=III=III= BOULDER DESIGN DATA:
�.����`�.1.���:� OVER THE BACKDRAIN �4.`�. dimension is not greater than their width. The longest•r •r 0 - III III 1 -
��� �� � ��! 1��" �.��� dimension of the base and ca rocks isperpendicular�����/�����%� r �����/���1 111--111--111--11P FRICTION ANGLE, = 34'
_/ �:�1;.1��:��;1����!;,I ���;1��;���;'1� = to the face of rockery.
is .- ... ..a. .--..a -III 11 1= COHESION, c = 0
vo-1W �4�� �•!V ati ,- •�,4 1tia 1 III III III 1 4. Where loose, soft, or otherwise unsuitab/e foundation BULK UNIT WEIGHT, 7R = 150 PCF
aw..�i toil GRANULAR ROCK BACKDRAIN _ av � .ait 1 III 111 111 RETAINED SOIL soil conditions ore encountered, contact the Engineer ALLOWABLE BEARING PRESSURE = 2000 PSF
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