HomeMy WebLinkAboutCDP 2017-0001; PRITCHARD RESIDENCE; RESPONSE TO COMMENTS; 2016-10-13SHORING DESIGN GROUP
October 13, 2016
Mr. Brian Church
Brian Church Architecture
p F Office (858) 793-3437
-
330 South Cedros Avenue
,Solana Beach, CA 92075 NOV1 4 ZO7
LAND DL ELOPMENT
Re: Pritchard Residence ENGINEERING JOB #17-125
Carlsbad, California
Subject: Response to City Comments, on Plans Dated 7/28/2017
Dear Mr. Church:
Shoring Design Group is in receipt of the plan review comments prepared by the City of Carlsbad,
regarding the above referenced project. In response, Shoring Design Group (SDG) offers the following
responses:
Response to "Redline" Comments
Sheet SH3 Drawing Redlines:
Please see "existing residence" text on neighboring structure as requested.
Title-block drawing initials have been omitted from the drawings, typical.
Sheet SH4 Drawing Redlines:
Please see updated text regarding the portion of cmu wall to be removed from the public right
of way. Also, please see the right-of-way line now shown in the profile view as requested.
Please see the updated text regarding the existing sewer lateral.
Please see the updated shoring profile which now shows the portion of the existing fence, on
top of the existing cmu wall as requested.
Please see the updated plan view text, calling out the proposed subterranean retaining walls by
others, typical.
Based on site conditions & job site visits, the approximate elevation of the existing garage slab
on grade is 42.00' +1-. The slab will be removed prior to commencement of drilling & is not
shown in profile to avoid confusion in the field.
Continued on Next Page
Sheet SH4 Drawing Redlines (Continued):
The depth of the existing wall footing is not currently known & will be determined in the field
prior to drilling. The depth is expected to be 18"-24" below existing grade & will not exceed
design thresholds if variations are determined in the field.
The lagging diagonals, at the daylighted ends, have been revised to limit the depth of excavation
to 5'-0" reducing the soil exposure during lagging installation. The increase in shored depth at
beams 1 & 8 (BOW=37.00') is included in the shoring calculations (see page 3 H=5' + 3' shim)
and has been updated to the beam schedule on sheet 5 of the drawings. Note, it is also
expected that soil arching & bedrock densities, will permit lagging installation without any
difficulties.
Please see the updated shoring profile which now includes the vertical dimension to the toe of
the lagging boards at beams #2 & 7 (3'-0").
Sheet SH5 Drawing Redlines:
Please see updated detail 1/SH5,that now shows the dimensions of the footing trench below the
proposed pad elevation.
Please see response to item #6 above. The depth of excavation for the lagging board diagonal
has been reduced & will not require any additional measures for installation.
Should you have any additional questions or comments regarding this matter, please advise.
Sincerely,
SHORING DESIGN GROUP,
,oFESSi3
C 80503
4Exp. 3/31/19 )
C10-
F CA
Roy P. Reed, P.E.
Project Engineer
Enclosed: City of Carlsbad Temporary Shoring Redlines (Plans Dated 7-28-17)
Delta 1 Temporary Shoring Plans, Dated 10-13-17
0.