IB #016.doc-1

Instruction Bulletin IB No.: 016 Project: Jefferson ES ORG Date: November 11, 2016 NAC Project No.: 162-11049 To: Chalmers Construction

Title of IB: Distribution of DSA Approved CCD-A009 & Geotech Letter (no change)

Scope:

1. Construction joints in two (2) building footings. –Replace CCD-A007. CCD-A007 is now voided. –Revision: removed staggered spacing requirement for couplers 2. Slot cut maximum to 12’-0” as indicated in Geotechnical Letter –No change

Justification: District request

Requested by: Glendale Unified School District

Attachments: CCD-A009 (DSA Approved) includes the following items, 1. SSK-004 <NEW DETAIL> CONCRETE FOOTING CONSTRUCTION

JOINT AT SLOT-CUT, as part of CCD #A009 11/10/2016, removed staggering of coupler location

2. S200 GROUND LEVEL & FOUNDATION PLAN CCD #A009 11/10/2016, no change from IB# 13

3. Geotechnical Engineer’s Letter dated 10.05.2016, no change from IB#13

ACTION TO BE TAKEN: 1. Make the described change in the work at no change in the Contract Sum and no

change in the Contract Time of Completion.

2. Make the described change in the work, with credit or cost, which will be determined in accordance with the General and Supplementary Conditions of the Contract.

3. Promptly advise the Architect as to credit or cost proposed for the described change. This is not an authorization to proceed with the change.

Instruction Bulletin Page 2

IB #016.doc-2

cc:

AUTHORIZATION TO PROCEED: When approved by both parties below, the Contractor is authorized to proceed with the work outlined in Scope IB-016. The amount for this change should be added in a forthcoming change order. Should there be a change in the contract time, please notify this office. Billing cannot be honored until the issuance of the change order

Owner’s Acceptance. Date

Contractor’s Acceptance Date

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

SS FLS AC

DATE

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

ghasegaw

DATE 11/10/2016ü

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GH 11/10/16

TYPICAL FOUNDATION / CONCRETE

FRAMING NOTES:

T.O.F.

INDICATES FLOOR ELEVATION CHANGE.

9.

7.

6.

4.

3.

2. SEE SHEET S100 THROUGH S101 FOR GENERAL NOTES.

INDICATES TOP OF FOOTINGS OR ANCHOR CAPS ELEVATION.

FOOTINGS OR ANCHOR CAPS SHALL BE 2'-0" BELOW TOP OF

CONCRETE SLAB ELEVATION U.N.O.

INDICATES TOP OF STRUCTURAL CONCRETE ELEVATION.

SEE SHEETS S500 THROUGH S502 FOR TYPICAL CONCRETE DETAILS.

AND UNDERGROUND UTILITIES.

SEE M.E.P. DRAWINGS FOR LOCATION OF TRENCHES, FLOOR SINKS,

PRIOR TO THE PLACEMENT OF REINFORCING STEEL. ALL FOUNDATIONS

GEOTECHNICAL ENGINEER SHALL OBSERVE THE FOUNDATION EXCAVATIONS

INDICATES STEPPED FOOTING, SEE 12/S500.SS10.

5. INDICATES FOOTING TYPE PER DETAIL 5/S501.F#

8.

1. SEE SHEETS ARCH FOR GRID DIMENSIONS & HORIZONTAL CONTROL.

MUST BE PLACED ON NATIVE ROCK, UNO.

EL=XXX'-X"

EL =XXX'-X"

11. SEE ARCH SHEET A2.21 FOR SLAB PLAN.

INDICATES CONCRETE FOOTING CONSTRUCTION JOINT PER 12.

12

A

B

F

G

D

E

345

C

20' - 0"

23' -

4"

24' -

5"

24' -

10"

23' -

11"

17' -

2"

23' - 10" 24' - 5"

23' -

4"

15' -

2"

10' - 6" 38' - 3"

F1

F4

F1

F1

4' -

6"

2' -

6" F2

2' -

6"

4' -

6"

TYP

6' - 1" TYP2' - 11"

F2 F2

TYP

F4

F2

F4

48" DEEP FTG W/#9 @ 12" OC LONG T&B &#6 @ 12" OC TRANS T&B

12'-0" WIDEx36" DEEP W/#9 @ 12" OC LONG T&B &#6 @ 12" OC TRANS T&B

1

S700

2

S700

3

S700

1

S701

2

S701

3

S701

S900

1

S900

3

W10x77

W10x77

W10x49W10x39 W10x39

W10x77

SIM

W10x77W10x39

W10x39

W10x77 W10x77

15' -

0"

54" DEEP W/#9 @ 12" OCT&B EA WAY

3

S502

W10x39 W10x39 W10x39

W10x77 W10x77

2' - 11"

W10x77

W10x77

W10x77

W10x49

W10x49

W10x49

W10x39

W10x77W10x77

W10x77

W10x77

#9 @ 12" OC EAWAY T&B

14' - 0"

(E) RETAINING WALL. CONTRACTORTO SHORE OR SLOT CUT TO AVOIDDAMAGE TO (E) RETAINING WALLAND FOOTING

5" THK SLAB ONGRADE W/ #4@ 16" OC EW TYP.SEE 13/S500 & 3/S501 3

S502W10x77

T.O.F. = -4' - 0"

T.O.F. = -6' - 0"

T.O. SLABEL= 0'-0"FF = 48.5'

S902

1

1

S502

2

S502

1

S502

TYP

2

S502 1

S502

OVER-EXCAVATE PER SOILS REPORT5'-0" BEYOND BLDG FOOTPRINT,DO NOT UNDERMINE ADJACENT STRUCTURES.

48" DEEP FTG W/ #9@12"OCEA WAY, T&B

6' -

6"

10' -

0"

10' -

0"

5' -

6"

6' - 1"

6' - 1"

10' -

0"

10' -

0"

29' - 0"

59' -

3"

29' - 0"

15' - 0"

37' -

3"

29' - 0"

30' -

4"

30' -

4"

F1 #9 @ 12" OCEA WAY T&B

1

S302

1

S300

2

S300

4

S300

3

S301

2

S301

1

S301

3' -

0"

5' - 6"

24" DEEP FTG W/#7 @ 12" OC EA WAY BOTTOM &#4 @ 12" OC SHEAR DOWELSPER

T.O.F.EL. = -2'-0" TYP UNO

T.O.F.EL. = -2'-0" TYP UNO

1

S702

2

S702

HSS6X6X1/4

HSS6X6X1/4

9 1/2"

3' -

6"

3' - 6"

1' -

1"

1' -

9"

7' - 11 1/8"

5' -

6"

5' -

6"

7' - 0" 7' - 0"

6' -

0"

5' -

0"

T.O.F. = -4' - 0"

6' - 0" 6' - 0"6' - 0" 6' - 0"

T.O.F. = -3' - 0"

T.O.F. = -3' - 0"

2' -

8"

HATCH INDICATES3" SLAB ON GRADEDEPRESSION PER

/2 S501

/5 S501

CONC PILASTER& PLATFORM.SEE MECH

10' - 0" 10' - 0"

6' -

"

8' -

"

8' -

0"

8' -

"

8

S501

8

S501

IDENTIFICATION STAMP

DIVISION OF STATE ARCHITECT

OFFICE OF REGULATION SERVICES

FILE NO. 19-41APPL NO. 03-114361

AC FLS SS .

DATE .

837 North Spring Street, Third FloorLos Angeles, CA 90012Telephone (323) 859 3100 / Fax (323) 859 3110

KPFF CONSULTING ENGINEERS

CIVIL ENGINEER

BREEN ENGINEERING

CONSULTANTS

DESIGNER

MECHANICAL / PLUMBING / ELECTRICAL

ENGINEERBREEN ENGINEERING

DOOR HARDWARE CONSULTANT

ARCHITECTURAL HARDWARE SERVICES

REGISTRATION

AGENCY APPROVAL

ISSUE

12345

D

C

B

A

MARK DATE DESCRIPTION

KEY PLAN

SCALE :

CHECKED BY :

DRAWN BY :

DESIGNER PROJECT NO. :

Glendale Unified SchoolDistrict

SHEET TITLE

SHEET NUMBER

STRUCTURAL ENGINEER

12345

FIRE PROTECTION ENGINEER

BREEN ENGINEERING

01-26-2012 DSA SUBMITTAL

TTHG

06-05-2012 DSA BACK CHECK

01-28-2016 DSA ADDENDUM 11

As indicated

10/7

/2016 1

:47:5

0 P

M

S200

GROUND LEVEL &FOUNDATION PLAN

110049.04

Thomas Jefferson Elementary School1540 Fifth St. Glendale, CA 91201

TR

UE

SCALE:REF: 1/8" = 1'-0"S200 1 / S300

1 GROUND LEVEL & FOUNDATION PLAN

1

<AS-REVISED>

SSK­004.

THIS APPROVAL IS FOR ITEMS WITHIN CLOUDEDAREAS ONLY. FOR OTHER INFORMATION NOT

CONTAINED WITHIN CLOUDED AREAS, REFER TOORIGINAL DSA APPROVED PLANS.

DO NOT USE THESE PLANS AS SUBSTITUTE FOR THEORIGINAL DSA APPROVED PLANS

81

3

11-10-2016 CCD #009CCDA009

CCD #A009

CCDA009

CCDA009

CCDA009

CCDA009

CCDA009

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

SS FLS AC

DATE

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

ghasegaw

DATE 11/10/2016

Information Bulletin #16, 11/11/2016

CLR

3"

SEE NOTES #3

EQ

EQ

EQ

EQ

(SEE NOTE #4)

EQ

DAYTON SUPERIORL-SERIES BAR-LOCKTYPE 2 COUPLER,TYP (ICC ESR-2495)

T&

B3"

CLR

(2) #5x4'-6" LONG@ 18" OC

1st POUR 2nd POUR. SLOT-CUT SOIL AMINIMUM OF 24 HOURS AFTER1st POUR

CONSTRUCTION JOINT(SEE NOTE #1)

ROUGHEN ENTIRE SURFACETO 1/4" AMPLITUDE

CONC FOOTINGPER PLAN

FOOTING LONGIT &TRANSV PER PLAN

NOTES:

1. LOCATIONS OF CONSTRUCTION JOINTS SHALL BE AS SHOWN ON 1/S200.

2. FOOTING TIES NOT SHOWN FOR CLARITY.

3. STAB TOP AND BOTTOM LONGITUDINAL BARS 12 INCHES INTO SOIL TO BE SLOT-CUT.

4. STAB #5 HORIZONTAL BARS INTO SOIL TO BE SLOT-CUT AS SHOWN.

SCALE:REF: 1" = 1'-0"S501 1 / S200

8 CONCRETE FOOTING CONSTRUCTION JOINT AT SLOT-CUT

DSA FILE NUMBER: 19­41DSA APPLICATION NUMBER: 03­114363PROJECT NAME: Jefferson ES ORG

SSK­004REFERENCE DRAWING 8/S501

NEW DETAILDATE: 11.10.2016

CCD 009

<NEW DETAIL>

PROVIDE 2x6x6"LONG SHEARKEYS AT 18"OC ALONG WIDTHOF FOOTING MID HEIGHT

CCDA009

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

SS FLS AC

DATE

APPROVED DIV. OF THE STATE ARCHITECT

LOS ANGELES REGIONAL OFFICE

ghasegaw

DATE 11/10/2016

Information Bulletin #16, 11/11/2016

1868 PALMA DRIVE, SUITE A VENTURA, CA 93003 WWW.NV5.COM OFFICE 805.656.6074 FAX 805.650.6264

CONSTRUCTION QUALITY ASSURANCE - INFRASTRUCTURE - ENERGY - PROGRAM MANAGEMENT - ENVIRONMENTAL

October 5, 2016 Project No.: 16-001944

Glendale Unified School District

Planning, Development, and Facilities

349 Magnolia Avenue

Glendale, CA 91204

Attention: Jeff Bohn

Subject: Supplemental Recommendations for Slot Cuts, Jefferson E.S. ORG,

Proposed Classroom Building, 1540 Fifth Street, Glendale, California

References: Response to RFI #43, Jefferson E.S. ORG, Proposed Classroom Building, 1540

Fifth Street, Glendale, California by NV5 WEST dated July 28, 2016

Geoseismic/Geotechnical Study Report, Two-Story Classroom Building,

Jefferson Elementary School, 1540 Fifth Street, Glendale, California by Converse

Consultants dated December 20, 2011

Dear Mr. Bohn,

NV5 West, Inc. is pleased to submit this letter providing supplemental recommendations for slot

cuts for foundation excavations along the north and northwest perimeter of the subject

improvements. The purpose of this evaluation was to re-analyze the proposed slot cut stability

for slot cuts wider than previously recommended. Previous recommendations for slot cuts were

given as a maximum 5 feet tall and 8 feet wide per ABC method (Converse, 2011).

The District requested that NV5 review previous recommendations for temporary excavations in

order to facilitate construction of the new building foundations in these areas. NV5 understands

that the proposed foundation excavations will be made nearly adjacent to the toe of the

continuous perimeter retaining wall footing, with the excavations to be approximately vertical

for a height of approximately 5 feet from the bottom edge of the existing wall footing to the

bottom of the excavation for the new foundations. This approximately 5 feet high construction

excavation is at the base of an approximately 5 feet high retaining wall, resulting in an

approximately 10 to 11 feet high unsupported excavation height.

NV5 performed three dimensional stability analyses using Bishop’s Simplified Method utilizing

soil properties and shear strength data presented in 2011 Converse report. For the proposed

conditions along the north and northwest perimeters, maximum 5 feet tall and 12 feet wide slot

cuts may be made following an AB method for the purposes of temporary excavations for new

foundation. Based on NV5’s analyses, the 12 foot wide slot cuts have a minimum factor of

safety of 1.2.

Information Bulletin #16, 11/11/2016

Information Bulletin #16, 11/11/2016