25.200.157_RTA_901_S_Ludlow_STRUCT_2025-1230.pdf
PDF 8 MB Posted
- Attached to
- Second Floor Reinforcement
- Solicitation number
- GD 26-05
- Issued by
- Montgomery County, Ohio
About this file
This is a structural engineering design document prepared by Shell + Meyer Associates, Inc. for the Greater Dayton Regional Transit Authority (RTA) for a Second Floor Reinforcement project located at 901 South Ludlow, Dayton, Ohio. The project involves reinforcing the second floor of an existing structure through the addition of new structural steel beams and supporting elements to enhance the load-carrying capacity of the existing floor system. The work includes installation of new W6x9 beams, new L3½x3½x3/8" angles, new plate reinforcement, and connections to existing structural elements including a 41-inch deep plate girder and various existing wide flange beams. The structural design is based on the Ohio Building Code (2024) with environmental loads including a roof snow load of 20 PSF, wind speeds of 114 MPH (3-second gust), and seismic design category B. The document specifies required structural materials including ASTM A992 wide flange sections, A500 Grade C tubing, and A36 plate steel, with all fabrication and erection to comply with AISC recommendations and ANSI/AISC 360-16 standards.
The design includes comprehensive special inspection requirements for structural steel fabrication, material verification, welder qualifications, and weld inspection in accordance with Ohio Building Code Section 1704. The project involves field verification of all existing dimensions, elevations, and conditions prior to fabrication, with detailed photographic documentation of existing structural conditions provided. New connections between the reinforcement beams and existing structural elements are detailed with specific welding requirements, including full penetration groove welds at all splices for plates and angles. The drawings note that steel sizes and dimensions shown are approximate, and contractors must field verify all conditions before fabrication. The document was issued for bidding and permitting on December 29, 2025, with design by RAM and checking by CJW under job number 25.200.157, prepared by the Owner's Architectural Consultant Alan Scherr of ASA Ohio.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Second_Floor_Reinforcement_(Addendum_#1_Revision).pdf | ||
| Second_Floor_Reinforcement.pdf | ||
| 26-114_GREATER_DAYTON_RTA_12.17.25.pdf | ||
| 901_SPEC_GDRTA.pdf | ||
| RTA_General_Terms_and_Conditions.docx | DOCX document | |
| Sample_Contract_(DO_NOT_COMPLETE).pdf | ||
| RTA_Construction_Terms_and_Conditions.docx | DOCX document |
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A M
RTA Second Floor Reinforcing
901 S Ludlow, Dayton OH
OWNER'S ARCHITECTURAL CONSULTANT:
ALAN SCHERR
https://www.asaohio.com/
ENGINEER OF RECORD:
SHEET LIST
Sheet Number Sheet Name
CS COVER SHEET
S001 STRUCTURAL NOTES & SPECIAL INSPECTIONS
S102 2nd FLOOR FRAMING PLAN & SECTIONS
S201 EXISTING PHOTOS
S202 SECTIONS & EXISTING PHOTOS
FIELD VERIFY ALL EXISTING
DIMENSIONS, ELEVATIONS &
CONDITIONS AS REQUIRED
BEFORE FABRICATION, TYPICAL.
SPECIAL INSPECTION NOTES
1 - The OWNER shall employ one or more special inspectors to provide inspections during construction on the types of work itemized below.
2 - Only the required STRUCTURAL Special Inspections have been listed on this sheet . Please refer to architectural drawings and/or specifications for required non-structural Special Inspections, if applicable. (i.e. Fire Resistant Materials and Coatings, EIFS, Smoke Control Systems)
3 - The special inspector shall be a qualified person who shall demonstrate competence, to the satisfaction of the building official, for inspection of the particular type of construction or operation requiring special inspection.
4 - Upon request, Shell + Meyer can provide a list of local agencies providing these services.
5 - Numbered and lowercase sublettered inspections indicate referenced OBC requirements
6 - Some numbered or lettered special inspection items may not be listed. These items are not required on this project.
7 - Additional information regarding inspections and tests may be found in the project specifications, on the drawings, and in the building code and referenced standards. The contractor and special inspector shall review all documents to determine the special inspections and testing necessary for this project.
8 - The Special Inspections table and other contract documents indicate the special inspections anticipated at the time the documents were approved by the Building Official. Changes in scope, materials, or unanticipated existing conditions may require additional inspections.
9 - Special inspection and site observation personnel are not responsible for job site safety or means and methods of construction unless noted specifically in the contract.
REQUIRED STRUCTURAL SPECIAL INSPECTIONS
Structural Steel - Formerly OBC Table 1704.3, now AISC 360-10 (Chapter N) Continuous Periodic Referenced Standard Additional OBC Requirements
Remarks
A. Fabrication of Structural Elements — X 1704.2 Refer to inspection of fabricator requirments
3. Material verification of structural steel:
a. For structural steel, identification markings to conform to AISC 360. — X AISC 360, Sec. M5.5 2203.1 Confirm markings match AISC standard specified.
b. For other steel, identification markings to conform to ASTM standards specified in the approved construction documents
— X ASTM A6 and Applicable ASTM material standards specified in construction documents
— Confirm markings match ASTM standards specified.
4. Material verification of weld filler materials:
a. Identification markings to conform to AWS specification in the approved construction documents.
— X AISC 360, Sec A3.5 and applicable AWS A5 documents 1704.3.1 Confirm weld designations match construction documents.
b. Manufacturer's certificate of compliance required. — X — — Confirm manufacturer's certified test reports.
C. Verify use of proper welding procedure specifications — X — — Obtain copy of welding procedure specifications
D. Verify welder qualifications — X — — Obtain copy of qualification card(s)
E. Verify size, length and spacing of welds — X
NOTE: PROVIDE FULL
PENETRATION GROOVE
WELDS AT ALL SPLICES FOR
PLATES AND ANGLES, TYPICAL.
REFERENCED DESIGN CODE:
OHIO BUILDING CODE (2024)
ENVIRONMENTAL LOADS:
ROOF SNOW LOAD:
GROUND SNOW LOAD, Pg = 20 PSF FLAT ROOF SNOW LOAD, Pf = 20 PSF SNOW EXPOSURE FACTOR, Ce = 1.0 SNOW LOAD IMPORTANCE FACTOR, Is = 1.0 THERMAL FACTOR, Ct = 1.0
WIND LOAD:
BASIC WIND SPEED (3 SECOND GUST) = 114 MPH
RISK CATEGORY = II
WIND EXPOSURE = B
INTERNAL PRESSURE COEFFICIENT = +/- 0.18
EARTHQUAKE LOAD:
SEISMIC IMPORTANCE FACTOR, Ie = 1.0 MAPPED SPECTRAL ACCELERATION, Ss = 0.144
S1 = 0.071
SITE CLASS = D (ASSUMED)
DESIGN SPECTRAL ACCELERATION: Sds = 0.154
Sd1 = 0.113
SEISMIC DESIGN CATEGORY = B
BASIC SEISMIC-FORCE-RESISTING SYSTEM (RESPONSE MODIFICATION FACTOR) =
[Reference: ASCE 7-16 Table 12.2-1]
B20 ORDINARY PLAIN MASONRY SHEAR WALLS (R = 1 1/2)
PER "OHIO EXISTING BUILDING CODE" 805.3 EXCEPTION, THE EXISTING LATERAL LOAD
CARRYING STRUCTURAL ELEMENTS WILL HAVE A DEMAND/CAPACITY INCREASE OF NO
MORE THAN 10% AND SHALL BE PERMITTED TO REMAIN UNALTERED.
SEISMIC RESPONSE COEFFICIENT, Cs = 0.103
GENERAL (ALL TRADES)
1. IN ACCORDANCE WITH SECTION 1704 OF THE OHIO BUILDING CODE, SPECIAL
INSPECTIONS WILL BE REQUIRED FOR THIS PROJECT. SPECIAL INSPECTIONS
SHALL BE PERFORMED IN ACCORDANCE WITH THE "SPECIAL INSPECTION
REQUIREMENTS" SCHEDULE.
2. CONTRACTOR SHALL VERIFY ALL EXISTING CONDITIONS AND REPORT ANY
CONDITIONS SUBSTANTIALLY DIFFERENT THAN THOSE SHOWN TO THE ENGINEER.
3. THE STRUCTURAL DRAWINGS HEREIN REPRESENT THE FINISHED STRUCTURE.
THE CONTRACTOR SHALL PROVIDE ALL TEMPORARY GUYING AND BRACING
REQUIRED TO ERECT AND HOLD THE STRUCTURE IN PROPER ALIGNMENT UNTIL
ALL STRUCTURAL WORK AND CONNECTIONS HAVE BEEN COMPLETED. THE
INVESTIGATION, DESIGN, SAFETY, ADEQUACY AND INSPECTION OF ERECTION
BRACING, SHORING, TEMPORARY SUPPORTS, ETC. IS THE SOLE RESPONSIBILITY
OF THE CONTRACTOR.
4. SHELL + MEYER ASSOCIATES, INC. SHALL NOT BE RESPONSIBLE FOR THE
METHODS, TECHNIQUES, AND SEQUENCES OF PROCEDURES TO PERFORM THE
WORK.
DESIGN CRITERIA NOTES
GENERAL STRUCTURAL NOTES
DESIGN UNIFORM LOADS:
DEAD LOAD: REFER TO DEAD LOAD TABULATION TABLES
ROOF LIVE LOAD: 20 PSF (MINIMUM PER OBC SECTION 1607.14.1)
UNIFORM FLOOR LIVE LOAD :
1. LIVE LOAD REDUCTION - USED FOR COLUMNS AND FOOTINGS PER 1607.9
ASSEMBLY (MOVEABLE) 100 PSF
DIVISION 5 - METALS
STRUCTURAL STEEL
1. ALL STRUCTURAL STEEL SHALL BE FABRICATED AND ERECTED IN ACCORDANCE WITH
THE LATEST AISC RECOMMENDATIONS AND CONFORM TO ANSI/AISC 360-16 AND AISC
303-10 INCLUDED IN THE 14TH EDITION OF THE "STEEL CONSTRUCTION MANUAL".
2. UNLESS NOTED OTHERWISE, ALL MATERIALS SHALL BE IN ACCORDANCE WITH THE
FOLLOWING ASTM SPECIFICATIONS:
WIDE FLANGE SECTIONS AND TEES ASTM A992 (50 KSI)
STRUCTURAL HSS TUBING A500 Gr.C (50 KSI) STEEL PIPE A500 Gr. C (46 KSI)
OTHER ROLLED PLATE/SHAPES A36 (36 KSI)
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A S e c o n d F lo o r R e in fo rc in g
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25.200.157
STRUCTURAL
NOTES &
SPECIAL
INSPECTIONS
R A
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12/29/2025
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APPROX. LOCATION OF EXISTING 8"-10"
HALF-ROUND CUT AT WEB & BOTTOM
FLANGE w/ L's SPANNING ABOVE, WELDED
TO WEB (ENDO EACH END MAYBE 6" PAST
CUT), SEE PHOTO # 8132
APPROX. LOCATION OF EXISTING 6"x40" COPE
CUT AT WEB & BOTTOM FLANGE, BOTTOM
FLANGE IS CUT TO 63" FROM BEAM END, w/
ANGLES SPANNING ABOVE, WELDED TO WEB
(DIAGONALLY FROM CONN. Ls DOWN TO
BOTTOM FLANGE ABOUT 10 FT PAST COLUMN),
SEE PHOTO # 8132 AND # 8133, # 8238, # 8239,
# 8240, # 8241
(CHAIN LINK FENCE BELOW)
(CHAIN LINK FENCE BELOW)
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EACH END MAYBE 8" PAST CUT)
APPROX. LOCATION OF
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INDICATES APPROX. LOCATION
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HORZ. ANGLES & RODS
SPANNING NEAR TOP OF W8's
INDICATES APPROX. LOCATION
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ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
ANGLE (EX) ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
ANGLE (EX)
APPROX. LOCATION OF
EXISTING SPRINKLER LINES
AT UNDERSIDE OF W8s
L3-1/2X3-1/2X3/8 L3-1/2X3-1/2X3/8
L3-1/2X3-1/2X3/8 L3-1/2X3-1/2X3/8
L3-1/2X3-1/2X3/8 L3-1/2X3-1/2X3/8
L3-1/2X3-1/2X3/8 L3-1/2X3-1/2X3/8
PL 3/4X11 PL 3/4X11
PL 3/4X11 PL 3/4X11
EXISTING SAW CUT HOLE,
APPROX. 5" DIA. IN BEAM
WEB, APPROX. MID-DEPTH
UNISTRUT (EX)
ANGLE (EX)
A N
G
LE
(E X
ANGLE (EX)
EXISTING
RAMPED
FLOOR
W10X22 (EX)
BR
S102
APPROX. LOCATION OF EXISTING BEAM SPLICE
(UNDER W8) w/ PL.12 1/4"x16 1/4" x1/2"+/- EACH SIDE
4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 4' - 0" 2' - 8" 2' - 8" 2' - 8" 4' - 0" 4' - 0" 4' - 0" 4' - 0"
APPROX. LOCATION / SIZE OF EXISTING
RAMP ABOVE, SEE PHOTO # 8269
EXISTING 41" GIRDER BOTTOM ANGLES
CUT AT COLUMN FACE & PIPE LOCATION
C
(E X
C
(E X
C
(E X
C
(E
X
) EXISTING
ROOM BELOW
INDICATES GAS PIPES OR
WATER LINES, TYPICAL
UNISTRUT (EX)
UNISTRUT (EX)
ANGLE (EX)
UNISTRUT (EX)
THIS EXISTING COLUMN
HAS AN EXISTING
HAUNCH TO REMAIN
(MADE OF 2 GUSSETS
AND FLAT PLATE, T/PL.
EL. 10 FT +/-)
1.5
A B C
L3-1/2X3-1/2X3/8
L3-1/2X3-1/2X3/8
PL 3/4X11
W X
W
X
W
X
W
X
W
X
W
X
W
X
W
X
EXISTING 5"x8" BLOCK
BEARING ANGLE
L6x4x1/2" LLV x12" LONG w/ (2) 3/4" DIA. EPOXY
ANCHORS
W X
W X
2' - 8" 2' - 8" 2' - 8"
W X
W
X
W
X
W X
W
X
W
X
W X
W
X
W
X
W X
W
X
W
X
2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8"
2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8"
2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8" 2' - 8"
FIELD CUT ANGLES
AND REWELD TO W6x9
S102
S102
S202
T
Y P
IC
A
L
T Y
P
IC
A L
T
Y P
IC
A
L
40' - 0" 40' - 0"
S202
NORTH
STEEL SIZES & DIMENSIONS
SHOWN ARE APPROXIMATE,
FIELD VERIFY ALL EXISTING
DIMENSIONS, ELEVATIONS &
CONDITIONS AS REQUIRED
BEFORE FABRICATION, TYPICAL.
EXISTING BEAM,
SEE PLAN
EXISTING 4" SLAB ON DECK
NEW (2) L3 1/2x3 1/2x3/8" x26'-0" LONG (MUST
TILT SLIGHTLY TO FIT)
NEW PLATE 3/4"x11" x26'-0" LONG
1/4 3-12
12" CONT.AT
EACH END
1/4 3-12
12" CONT. AT
EACH END
FIELD WELD TOP FLANGE TO DECK
AT 2'-0"o.c. EACH SIDE, PROVIDE 1 1/2" SQ. x t STEEL SHIMS ON TOP
OF BEAMS AS REQUIRED DUE TO
EXISTING DEFLECTION OF METAL
DECK, TACK WELD IN PLACE, TYP
NEW BEAM PER PLAN
STEEL SHIMS AS
REQUIRED, TACK
WELD TOGETHER, TYP.
1/8 2"
SHIM PLATE
TO BEAMS,
TYPICAL
Second Floor Framing (prior Roof) 116' - 0"
5/16" STEEL MATCH PLATES
1/4
3/16
/2
EXISTING FLOOR
EXISTING 41" GIRDER
NEW BEAM PER PLAN
(4) 1/2" DIA. BOLTS
BETWEEN EXISTING ANGLES
0"
3/8" SHEAR PLATE, CUT TO FIT
AROUND EXISTING ANGLE
Second Floor Framing (prior Roof) 116' - 0"
EXISTING STEEL ANGLE
PL. 5/16"x4"x4", CUT TO FIT
AROUND EXISTING T.C. ANGLE
1/4
EXISTING 41" GIRDER
EXISTING FLOOR
NEW BEAM PER PLAN
(2) 1/2" DIA. BOLTS
1 1/2" 1/2"
2"
T O
T O
P O
F F
L A
N G
E
NOTE: PROVIDE FULL
PENETRATION GROOVE
WELDS AT ALL SPLICES FOR
PLATES AND ANGLES, TYPICAL.
Sheet Number
Date
IS
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R e v is io n s
Job Number
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D r a w n B y
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A L L B
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A L L R
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A M
S102
R T
A S e c o n d F lo o r R e in fo rc in g
R A
M
C J W
25.200.157
2nd FLOOR
FRAMING PLAN
& SECTIONS
R A
M
12/29/2025
S
L u d lo w
D a y to n O
H
1/4" = 1'-0"
2nd FLOOR FRAMING
3/4" = 1'-0"BR
TYPICAL BEAM REINFORCEMENT
3/4" = 1'-0"1
TYPICAL NEW BEAM TO 41" GIRDER
3/4" = 1'-0"2
NEW BEAM TO 41" GIRDER AT EXIST. VERT. ANGLE
N o
D a te
Is s u e R e v is io n
D e s c ri p ti o n
.2
.2
F O
R B
ID
D
IN
G
P
E R
Sheet Number
Date
IS
S
U E S
R e v is io n s
Job Number
D e s ig n e d B y
D r a w n B y
C h e c k e d B y
S c a l e A
S N
O T
E D
IN
A
C C
E P
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IN
G A
N D
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IL
IZ
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D R
A W
IN
G
S D
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A
IL
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A N
D D
A T
A O
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F O
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D
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D A
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N
IS
H E
D B
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H E
L L
M E
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R A
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IA
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C (S
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T H
A T
A L L S
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A L L B
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A L L R
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A
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A L L C
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F U
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R A
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E
A T
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A S
H A
L L H
A V
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S
F
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H A
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M A
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B Y
A N
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N E
O T
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M A
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F O
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U S
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F
T
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C T
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N
IC
F
IL
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O R
D O
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M E
N T
S W
IT
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H E
P R
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T
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A M
S201
R T
A S e c o n d F lo o r R e in fo rc in g
R A
M
C J W
25.200.157
EXISTING
PHOTOS
R A
M
12/29/2025
S
L u d lo w
D a y to n O
H
PHOTO # 8143
LOOKING SOUTH ALONG GRID 4
PHOTO # 8269
41" DEEP PLATE GIRDER ALONG GRID 6
PHOTO # 8132
LOOKING EAST ALONG GRID B BETWEEN GRIDS 4 & 6
PHOTO # 8192
LOOKING SOUTH AT ROLL-UP DOOR IN SOUTH WALL
PHOTO # 8152
LOOKING SOUTHWEST AT ROLL-UP DOOR IN SOUTH WALL
PHOTO # 8151
LOOKING SOUTH AT COLUMN C-4
PHOTO # 8153
LOOKING SOUTHEAST BETWEEN GRIDS B & C
PHOTO # 8149
LOOKING WEST AT COLUMN B-1
PHOTO # 8135
LOOKING SOUTH ALONG GRID 5
PHOTO # 8170
LOOKING NORTH ALONG GRID 6 BETWEEN GRIDS B & C
PHOTO # 8279
LOOKING EAST BETWEEN GRIDS A & B
PHOTO # 8208
CONCRETE PLUGGED FORMER ROOF DRAIN & CONDUIT
PHOTO # 8167
LOOKING SOUTHEAST ALONG GRID 6 BETWEEN GRIDS B & C
PHOTO # 8157
LOOKING EAST ALONG GRID C BETWEEN GRIDS 5 & 6
PHOTO # 8270
LOOKING UP COLUMN B-6
PHOTO # 8250
LOOKING NORTHWEST AT COPED BEAM NEAR COLUMN B-5
N o
D a te
Is s u e R e v is io n
D e s c ri p ti o n
.2
.2
F O
R B
ID
D
IN
G
P
E R
B
EXISTING W24x76
EXISTING DIAGONAL
ANGLE NS/FS
EXISTING WELDED
SPLICE PLATE NS/FS
NEW 3/8" WEB PLATE,
FIELD MEASURE (F.M.)
NEW FLANGE PLATE 1/2"x9" (F.M. LENGTH), SLOT TO FIT AROUND WEB EXISTING PIPE
1' - 4" LAP
FIELD MEASURE SLOT LENGTH
EXISTING W27 BEAM
EXISTING 2nd FLOORNEW BEAM PER PLAN
EXISTING W8 BEAM
1/4
1/4
1/4
B
EXISTING W21x68
ADD PLATE 1/2"x10"x3'-0"
TO BOTTOM FLANGE
EXISTING PIPE
EXISTING W27 BEAM
EXISTING 2nd FLOOR
NEW BEAM PER PLAN
1/4
EACH SIDE
EXISTING HALF-ROUND CUT
w/ ANGLE ABOVE E.S.
Sheet Number
Date
IS
S
U E S
R e v is io n s
Job Number
D e s ig n e d B y
D r a w n B y
C h e c k e d B y
S c a l e A
S N
O T
E D
IN
A
C C
E P
T
IN
G A
N D
U T
IL
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D R
A W
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G
S D
E T
A
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S N
O T
E S
A N
D D
A T
A O
N A
N Y
F O
R M
O F
M E
D
IA
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N E
R A
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D A
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N
IS
H E
D B
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H E
L L
M E
Y E
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C (S
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E R
A G
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T H
A T
A L L S
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H O
S H
A L L B
E D
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M E
D T
H E
A U
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A
N D
S H
A L L R
E T
A
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A L L C
O M
M O
N L
A W
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M A
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F U
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H E
R A
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E
A T
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A S
H A
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A V
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O R
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P O
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Y
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R O
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S
F
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H A
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M A
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B Y
A N
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N E
O T
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M A
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F O
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U S
E O
F
T
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C T
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IC
F
IL
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O R
D O
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M E
N T
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P R
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A M
S202
R T
A S e c o n d F lo o r R e in fo rc in g
R A
M
C J W
25.200.157
SECTIONS &
EXISTING
PHOTOS
R A
M
12/29/2025
S
L u d lo w
D a y to n O
H
PHOTO # 8239
LOOKING WEST ALONG GRID B BETWEEN GRIDS 4 & 6
PHOTO # 8240
LOOKING NORTHWEST ALONG GRID B BETWEEN GRIDS 4 & 6
PHOTO # 8241
LOOKING NORTH AT GRID B BETWEEN GRIDS 4 & 6
PHOTO # 8238
LOOKING NORTHEAST ALONG GRID B BETWEEN GRIDS 4 & 6
PHOTO # 8133
LOOKING EAST ALONG GRID B BETWEEN GRIDS 4 & 6
3/4" = 1'-0"1
REINFORCING AT BEAM BETWEEN GRIDS 5 & 6, NEAR B
N o
D a te
Is s u e R e v is io n
D e s c ri p ti o n
.2
.2
F O
R B
ID
D
IN
G
P
E R
M I T
3/4" = 1'-0"2
REINFORCING AT BEAM BETWEEN GRIDS 4 & 5, NEAR B
| Sheets |
| CS - COVER SHEET |
| S001 - STRUCTURAL NOTES & SPECIAL INSPECTIONS |
| S102 - 2nd FLOOR FRAMING PLAN & SECTIONS |
| S201 - EXISTING PHOTOS |
| S202 - SECTIONS & EXISTING PHOTOS |
File details come from the government source that posted it. Updated .