4_-_Drawings.pdf

G A

T E

B

O V

E

G A

B

O V

E

MH 4

MH 3 A

A

MAIN

TUNNEL

(NO ASPHALT

LAYER REQ'D

UNDER RAMP)

POWERHOUSE TUNNEL-

NOT IN CONTRACT

MAIN

TUNNEL

MAIN

TUNNEL

MAIN

TUNNEL

A A

A A

B B

B B

A A

A B

A

C

A B

60'-3"60'-3"50'-0" 48'-0"

3'-6"

3'-6"

3'-6"

L A

U N

D R

Y

R

O O

M

A B

O V

E

10'-3"

S T

O R

A G

E

R

O O

M

A B

O V

E

190'-5" 212'-4"

LOADING

DOCK

STORAGE ROOM

EXIT

LOADING

DOCK

LAUNDRY ROOM

EXIT

10'-0"

10'-0"

BEGIN TUNNEL W/

CONC. TOP EXPOSED

TUNNEL W/ ASPH.

OVER CONC. TOP

AREA W/ NEW

LAYER OF ASPH.

ORIGINAL ASPH.

SURFACE

CONC. PAD FOR TRASH

COMPACTOR

UNISTRUT (1 3/4"D)

GALVANIZED

3/8" PIPE HANGER

RODS

3'-6"

4'-9"

UNISTRUT SUPPORT

L 2"x2"X1/4"x6"LONG

GALVANIZED

1/4" ±BEARING

PAD (TYP.)

11/2" PIPE

4'-9"

3'-6"

UNISTRUT (1 3/4"D)

GALVANIZED

3/8" PIPE HANGER

RODS

UNISTRUT SUPPORT

L 2"x2"X1/4"x6"LONG

GALVANIZED

1/4" ±BEARING

PAD (TYP.)

11/2" PIPE

SIDE TUNNEL 2&3 - 3 PIPES:

3 1/2" (7 1/2" w/INSULATION)

2 1/2" (5 1/2" w/INSULATION)

1 3/4" (5 1/2" w/INSULATION)

MH2 OR MH3

SIDE

TUNNEL

2 OR 3

MAIN

TUNNEL

MAIN TUNNEL - 3 PIPES:

7" ( 11" w/INSULATION)

4 1/2" ( 8" w/INSULATION)

3" (4 3/4" w/INSULATION)

MAIN TUNNEL - 3 PIPES:

7" ( 11" w/INSULATION)

4 1/2" ( 8" w/INSULATION)

3" (4 3/4" w/INSULATION)

SIDE TUNNEL 1 - 1 PIPE:

4 1/2" ( 8 " w/INSULATION)

1 3/4" (5 3/4" w/INSULATION)

MH1

SIDE

TUNNEL 1

MAIN

TUNNEL

NICHE

SCALE IN FEET

25' 50'

STEAM TUNNEL

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

6'

SCALE IN FEET

0 2' 4'

TYPICAL MAIN TUNNEL SECTION

A-A

6'

SCALE IN FEET

0 2' 4'

TYPICAL SIDE TUNNEL SECTION

B-B

6'

SCALE IN FEET

0 2' 4'

TYPICAL SECTION AT MAIN

TUNNEL/SIDE TUNNEL 2 OR 3

A-B

6'

SCALE IN FEET

0 2' 4'

TYPICAL SECTION AT MAIN

TUNNEL/SIDE TUNNEL 1

A-C

GENERAL NOTE:

ALTERNATE No. 1 - REMOVE AND REPLACE ALL PIPE INSULATION

SIDE TUNNEL 1

MAIN TUNNEL

S I D

E

T

U N

N E

L

M A

I N

U N

N E

L

G A

B

O V

E

5 6

23 24 25

26 28

POWERHOUSE TUNNEL-

NOT IN CONTRACT

POWERHOUSE TUNNEL

- NOT IN CONTRACT

59 60

S T

O R

A G

E

R

O O

M

A B

O V

E

MAIN TUNNEL

MAIN TUNNEL

±8'-0" ±8'-0"

±6'-0" ±6'-0"

STATIONS

109-111

STATION 29

STATIONS

1 & 4

LEGEND:

MAIN TUNNEL

M A

N

N E

L

S I D

E

T

U N

N E

L

G A

B

O V

E

MH 3

MH 4

SIDE TUNNEL 4

55 56

L A

U N

D R

Y

R

O O

M

A B

O V

±10'-0"±16'-0"±8'0"

±8'-0"

±25'-10" ±37'-2"

STATION 134

STATIONS

128-131

STATION 77 STATIONS

86-87

STATION 95

±3'-6"

SCALE IN FEET

8'0 32'16'

STEAM TUNNEL LOCATIONS

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

NOTES:

FOR PHOTOS SEE DRAWINGS

S104 THRU S109.

G

B

O V

E

POWERHOUSE TUNNEL-

NOT IN CONTRACT

MAIN

TUNNEL

60'-3" 48'-0"

3'-6"

3'-6"

S T

O R

A G

E

R

O O

M

A B

O V

E

212'-4"

Ø 7" PIPE

Ø 4 1/2" PIPE

Ø 3" PIPE

Ø 3" PIPE

Ø 4 1/2" PIPE

Ø 7" PIPE

Ø 4 1/2" PIPE

Ø 1 3/4" PIPE

Ø 1 3/4" PIPE

Ø 2 1/2" PIPE

Ø 3 1/2" PIPE

Ø 7" PIPE

Ø 4 1/2" PIPE

Ø 3" PIPE

PIPES INSULATION

UNDER STORAGE ROOM-

NOT IN CONTRACT

G A

B

O V

E

MH 4

MH 3

MAIN

TUNNEL

MAIN

TUNNEL

60'-3"

3'-6"

L A

U N

D R

Y

R

O O

M

A B

O V

E

10'-0"

190'-5"

Ø 3" PIPE

Ø 4 1/2" PIPE

Ø 7" PIPE

Ø 3 1/2" PIPE

Ø 2 1/2" PIPE

Ø 1 3/4" PIPE

Ø 3" PIPE

Ø 4 1/2" PIPE

Ø 7" PIPE

Ø 7" PIPE

Ø 4 1/2" PIPE

Ø 3" PIPE

PIPES INSULATION

UNDER LAUNDRY ROOM-

NOT IN CONTRACT

SCALE IN FEET

25' 50'

STEAM TUNNEL WITH

PIPE LAYOUT

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

GENERAL NOTE:

ALTERNATE No. 1 - REMOVE AND REPLACE ALL PIPE INSULATION, (EXCEPT PIPES UNDER STORAGE AND

LAUNDRY ROOM-NOT IN CONTRACT).

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

NOTE:

SEE DRAWING S102 FOR PHOTO LOCATIONS.

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

REPAIR ITEMS

DETAILITEM DESCRIPTION

1B. REPLACE EXIST. SLAB AND WALL

WITH NEW SLAB AND NEW WALL

DETAILS 1/S202, 2/S202,

3/S202 & 7/S202.

2. SHALLOW (< 2") SPALL REPAIR DETAIL 1/S201.

3. DEEP (>= 2") SPALL REPAIR DETAIL 2/S201.

4. NON-STRUCTURAL WALL CRACK INJECTION

FOR SHRINKAGE, THERMAL, ETC.

DETAIL 3/S201.

5. STRUCTURAL WALL OR SLAB CRACK

INJECTION FOR STRESS, SETTLEMENT, ETC.

DETAIL 4/S201.

6. REMOVE EXIST. PIPE HANGER AND

REPLACE WITH NEW PIPE HANGER

DETAIL 5/S202

& 6/S202.

7. SEALING TOP SLAB NON-STRUCTURAL

CRACK OR JOINT

DETAIL 4/S202.

8. REPLACE EXIST. MANHOLE COVER AND FRAME

WITH NEW WATERPROOFING MANHOLE COVER

AND FRAME

ABBREVIATION:

1. MT MAIN TUNNEL

2. ST SIDE TUNNEL

3. MH MANHOLE

4. SP SPALL

5. C CRACK

6. TS TOP SLAB

7. BS BOTTOM SLAB

8. SJ SLAB JOINT

9. PH PIPE HANGER

10. NW NORTH WALL

11. SW SOUTH WALL

12. EW EAST WALL

13. WW WEST WALL

DETAIL 1/S203,

2/S203

& 3/S203.

1A. REPLACE EXIST. SLAB WITH

NEW SLAB

DETAILS 1/S202, 2/S202,

& 3/S202.

QUANTITY

49 FT.

BASE BID

26 FT.

210 SF.

140 SF.

165 FT.

20 FT.

74 EA.

271 FT.

4 EA.

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

*** -SEE S102 FOR EXTENTS OF TOP SLAB AND WALL REPLACEMENTS.

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

NOTE:

** -DISCONNECT / RECONNECT POWERLINE (TO TRASH COMPACTOR)

AS REQUIRED FOR SLAB REPLACEMENT..

*** -SEE S102 FOR EXTENTS OF TOP SLAB AND WALL REPLACEMENTS.

1"

1/2" MIN.

TO W.W.F.

2" DEEP SPALL

MAX.

T

Y P

TO W.W.F.

1/2" MIN.

T

Y

P

NOT TO SCALE

PLAN VIEW

1A

NOT TO SCALE

EXISTING SPALL

1B

NOT TO SCALE

SECTION AT REPAIR

1C

NOT TO SCALE

TYPICAL SHALLOW (<=2") SPALL REPAIR

(WITHOUT EXPOSED REBARS)

NOT TO SCALE

PLAN VIEW

2A

NOT TO SCALE

REPAIR WITH SHOTCRETE

2B

NOT TO SCALE

SECTION AT REPAIR

2C

NOT TO SCALE

TYPICAL WALL CRACK PRESSURE INJECTION REPAIR (FOR

SHRINKAGE, THERMAL, NON-STRUCTURAL CRACKING, U.O.N.)

NOT TO SCALE

ELEVATION VIEW

3A

NOT TO SCALE

SECTION B-B

3B

NOT TO SCALE

TYPICAL WALL CRACK PRESSURE INJECTION REPAIR (FOR

STRESS, SETTLEMENT, STRUCTURAL CRACKING ONLY.)

NOT TO SCALE

ELEVATION VIEW

4A

NOT TO SCALE

SECTION C-C

4B

NOT TO SCALE

TYPICAL DEEP (>=2") SPALL REPAIR

(WITH EXPOSED REBARS)

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

RELEASED FOR

CONSTRUCTION

3 3/4"

3'-6"

4'-9"

7 1/2" 7 1/2"

2" CL.

C

L

3" 3"

7 1/2" 7 1/2"

4'-9"

3'-6"

4'-9"

4'-9"

3/8" PIPE HANGER

RODS (GALV.)

(SCH. 40, GALV.)

1 1/2"Ø STD. PIPE

3"

C

L

O

C

E A

F

A C

E

T

Y P

7 1/2"

2" CL.

7 1/2"

4'-9"

3'-6"

3 3/4"

3"

C

L

4'-9"

3"

C

L

O

C

E A

F

A C

E

T

Y P

3"

3/8" PIPE HANGER

RODS (GALV.)

(SCH. 40, GALV.)

1 1/2"Ø STD. PIPE

4'-9"

7 1/2" 7 1/2"

4'-9"

3'-6"

1"

1"

C

L

C

L

EXIST. SLAB

EXIST. SLAB

M A

T C

H

E X

I S

T

E X

I S

T

M A

T C

H

VARIES

MATCH

EXIST.

MATCH

EXIST.

VARIES

EXIST. WALL

EXIST. WALL

C

L

C

L

3'

SCALE IN FEET

0 1' 2'

TYPICAL TUNNEL SECTIONS AT SLAB CRACKING

AND SLAB JOINTS

3'

SCALE IN FEET

0 1' 2'

TYPICAL TUNNEL SECTIONS AT PIPE SUPPORT

SYSTEM AT MAIN TUNNEL

3'

SCALE IN FEET

0 1' 2'

TYPICAL TUNNEL SECTIONS AT PIPE SUPPORT

SYSTEM AT SIDE TUNNEL

3'

SCALE IN FEET

0 1' 2'

TYPICAL TUNNEL SECTION WITH NEW WALL

3'

SCALE IN FEET

0 1' 2'

TYPICAL TUNNEL SECTION WITH NEW SLAB

3'

SCALE IN FEET

0 1' 2'

TYPICAL SIDE TUNNEL SECTION WITH

NEW SLAB AND NEW WALLS

3'

SCALE IN FEET

0 1' 2'

TYPICAL MAIN TUNNEL SECTION WITH

NEW SLAB AND NEW WALLS

6" 6"

1/2"

(TYP.)

(TYP.)

1/2"

6" 6"

1/2"Ø GALV. BOLT

(UNISTRUT TO ANGLE,

A307, GALV., TYP.)

A307, GALV., TYP.)

(UNISTRUT TO ANGLE,

1/2"Ø GALV. BOLT

2-1/2"Ø @ 3" O.C. ADHESIVE

WITH 3" EMBEDMENT (TYP.)

ANCHOR BOLTS (A307, GALV.)

2-1/2"Ø @ 3" O.C. ADHESIVE

WITH 3" EMBEDMENT (TYP.)

ANCHOR BOLTS (A307, GALV.)

6"

C

L

X I S

T

S

L A

B

T H

I C

K N

E S

S

O

F

NEW SLAB

THICK. TO

MATCH EXIST.

T

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A

7 1/2"7 1/2"

4'-9"

3'-6"

C

T

Y

P

T

Y

P

MANHOLE

OD

=29.5"±

M

A

N

N E

L

=29.5"±

OD

MANHOLE

T

Y

P

T

Y

P

C

3'-6"

7 1/2" 7 1/2"

S

I D

E

T

U N

N E

L

4'-9" MAIN TUNNEL

3'

SCALE IN FEET

0 1' 2'

TYPICAL PLAN OF TOP SLAB AT TUNNEL INTERSECTION (U.O.N.)

3'

SCALE IN FEET

0 1' 2'

TYPICAL PLAN OF TOP SLAB AT TUNNEL INTERSECTION (AT MH1)

1. ALL SAFETY REGULATIONS ARE TO BE FOLLOWED STRICTLY. METHODS OF CONSTRUCTION AND

ERECTION OF THE STRUCTURAL MATERIAL IS CONTRACTOR'S RESPONSIBILITY.

2. DESIGN LOAD : (2009 IBC - INTERNATIONALBUILDING CODE) STRUCTURE CATEGORY III

A. DEAD LOAD : ACTUAL WEIGHT OF MATERIAL.

B. LIVE LOAD :

BASIC WIND SPEED .....90 MPH (EXPOSURE C)

WIND LOAD IMPORTANCE FACTOR Iw = 1.15

SEISMIC DESIGN:

BUILDING OCCUPANCY CATEGORY III, SEISMIC LOAD IMPORTANCE FACTOR,

Ie = 1.25 SPECTRAL RESPONSE ACCELERATION SMS = 37.8%G, SM1 = 21.1%G

SDS = 25.2%G, SD1 = 14.07%G

SITE CLASSIFICATION "D"

SEISMIC DESIGN CATEGORY "C"

3. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING ALL EXISTING DIMENSIONS AND CONDITIONS.

4. IN THE CASE OF CONFLICT BETWEEN THE NOTES AND DETAILS, THE MOST RIGID REQUIREMENTS SHALL

GOVERN.

5. THE CONTRACTOR SHALL MAKE NO DEVIATION FROM DESIGN DRAWINGS WITHOUT WRITTEN APPROVAL

OF THE STRUCTURAL ENGINEER.

6. THE CONTRACTOR SHALL BRING ALL NON-TYPICAL FIELD CONDITIONS NOT COVERED BY PLANS, DETAILS

AND SECTIONS CONTAINED IN THESE DRAWINGS TO THE IMMEDIATE ATTENTION OF THE STRUCTURAL

ENGINEER.

GENERAL

MISCELLANEOUS STEEL

1. ALL STEEL DETAILS AND CONNECTION SHALL BE IN ACCORDANCE WITH THE REQUIREMENT OF THE

LATEST A. I. S. C. SPECIFICATIONS WITH LATEST REVISIONS.

2. ALL STRUCTURAL PIPES SHALL BE ASTM A-53, FY = 35 K.S.I. MIN. ALL ANGLES, RODS AND PLATES

SHALL BE ASTM A-36 ,FY = 36 K.S.I. U.O.N. ALL MISCELLANEOUS STEEL SHALL BE ASTM A-36, FY = 36

K.S.I. U.O.N.

UNISTRUT SYSTEM

1. UNISTRUT SYSTEM IS A PART OF ATKORE INTERNATIONAL. UNISTRUT INSTALLATIONS AND THEIR

CONNECTIONS SHALL FOLLOW MANUFACTURER'S GUIDELINES AND PROCEDURES.

MISCELLANEOUS

1. SHOP DRAWINGS. CONTRACTORS SHALL SUBMIT SHOP DRAWINGS FOR CONCRETE,

REINFORCING STEEL, STRUCTURAL STEEL AND CONCRETE REPAIR MATERIALS TO THE

ENGINEER FOR APPROVAL.

2. THE INJECTION ADHESIVE ANCHORS SHALL MEET THE FOLLOWING LOAD REQUIREMENTS:

FOR 1/2"Ø ANCHORS WITH 3" EMBEDMENT IN CONCRETE

MINIMUM ALLOWABLE SHEAR = 2.7 KIPS. MINIMUM

ALLOWABLE TENSION = 1.4 KIPS.

3. ALL CONCRETE REPAIR METHODS AS OUTLINED ON SHEETS S201 & S202 SHOULD

STRICTLY FOLLOW MATERIAL MANUFACTURER RECOMMENDED REPAIR

PROCEDURES.

GENERAL NOTES

CONCRETE AND REINFORCING STEEL

1. ALL REINFORCEMENT SHALL BE A-615 GRADE 60 STEEL. ALL WELDED WIRE FABRIC SHALL

CONFORM TOASTM A1064.

2. ALL REINFORCEMENT SHOULD BE SECURELY HELD IN PLACE WHILE PLACING CONCRETE. IF

REQUIRED,ADDITIONAL BARS OR STIRRUPS SHALL BE PROVIDED BY THE CONTRACTOR TO

FURNISH SUPPORT FOR ALL BARS.

3. ALL REINFORCING BARS SHALL BE LAPPED 36 BAR DIAMETERS - 18" MIN., U.O.N.

4. MINIMUM CONCRETE COVER FOR REINFORCING STEEL SHALL BE 1" FOR SLABS AND WALLS.

ALL CONCRETE EXPOSED TO WEATHER OR EARTH SHALL HAVE MINIMUM CONCRETE COVER OF 2"

FOR BARS LARGER THAN #5, 1-1/2" FOR #5 BARS OR SMALLER, AND 3" FOR ALL CONCRETE

PLACED AGAINST EARTH.

5. PROVIDE CORNER BARS WITH 1'-6" IN EACH DIRECTION IN ALL WALLS AND FOOTINGS AND AT ALL

WALL INTERSECTIONS TO MATCH SIZE AND SPACING OF HORIZONTAL BARS IN THOSE WALLS AND

FOOTINGS.

6. ALL CONCRETE WORK SHALL CONFORM TO THE LATEST ACI CODE AND DETAILING MANUAL.

7. CONCRETE SHALL HAVE UNIT WEIGHT OF 150 PCF, F'C = 4,000 PSI COMPRESSIVE STRENGTH AT 28

DAYS AND SLUMP OF 4" MAX. U.O.N. USE 5% AIR ENTRAINING ADMIXTURE IN ALL CONCRETE.

TUNNEL TOP SLAB ...... AASHTO STANDARD H 20 TRUCK, MAX. WHEEL LOAD = 16 KIPS

SNOW ............................15 PSF, SNOW LOAD IMPORTANCE FACTOR Is = 1.10

*** 3'-5 1/2"ر

6"6"

2'-5 1/2"ر

(PER MANUF.)

2'-1 1/4"±

(PER MANUF.)

S L A

B

3'

SCALE IN FEET

0 1' 2'

TYPICAL SECTION AT MANHOLE

CHECKED BY:

DATE:

DRAWN BY:

SHEET TITLE :

APPROVED BY:

DIVISION HEAD

PROJ. MANAGER

JOB NUMBER

PROJECT :

SHEETSCALE:

01/20/2015

AS

AS

CB

A

B

C

D

E

1 2 3 4 5

E

D

C

B

A