Report (12) Submittal Response Letter I ThT =`-• ARCHITECTURE
S E_ R A URBAN DESIGN+PLANNING
APPROVED INTERIOR DESIGN
OFFICE CO
Date N EVISION
Project Name Dartmouth Apartments
Project Number 1903007 Rtj�O �O 1 9 ' 0 • 3 Li
Attention a,— 1 -
Company Essex General Construction Inc
Address 4284 W 7th Avenue
Eugene, Oregon, 97402 ,,_, / �j� �� 7�
Phone (503) 747-0092 //77'/ S /
Email
Submittal Name Stair Railings and Ships Ladders
Submittal No. 055000-2.1
Revision
The following comments refer to the submittal listed above. They s pplement all comments
made within the submittal itself and do not necessarily represent all omments within this
submittal.
General Comments:
1. No Exceptions Noted
Sender Charlie Baxter
cc
SUBMITTAL REVIEW
NO EXCEPTIONS NOTED ❑ DISAPPROVED
El NO EXCEPTIONS NOTED IN CORRECTED COPY
❑ REVISE AND RESUBMIT El NOT REVIEWED
Reviewed only for general conform.nce with the design concept
of the project and general complian e with the information given
in the Contract Documents. This review does not affect the
Contractor's responsibility to perfo m all contract requirements
with no change in contract price or 'me. Any actions shown are
subject to the requirements of the Contract Documents.
Contractor is responsible to confi and correlate dimensions at
the site for information that perta ns solely to the fabrication
processes for the means, methoIs, techniques, procedures,
sequences, and quantities necess.ry to complete the contract
and for coordination of the work of.:II trades and the satisfactory
performance of his work. Any re iew is undertaken solely to
satisfy Architect's obligations, if an , to the Owner and shall not
give rise to claim by Contractor or other parties against Architect
or Owner.
charlieb
REVIEWED BY SERA
11/12/2021
DATE
338 NW 5TH AVENUE PORTLAND OR 97209 T 503.445.7372 F 503.445.7395 SERADESIGN.COM
Submittal Review
Essex 72nd & Dartmouth
GENERAL CONSTRUCTION,INC.
Section: 055000-2.1
Date: 11/10/21
Subcontractor/Supplier: Instafab
Description: Stair Railings & Ships Ladders
Contractor: Stamp
Interior Stair Railings & Ships Ladders Deferred Submittal Essex General Construction Inc
This drawing or submittal has been reviewed
- Stair Railing Elevation Plans (2-5) for general conformance with plans and
specifications.Review does not relieve
- Fabrication Details (6-57) fabricator/vendor or subcontractor of
- responsibility for errors,omissions,or
Calculations (58 66) non-compliance with contract documents.
11/10/2021
Reviewed
Eliot Adams
Architect: Stamp
Engineer/Consultant: Stamp
®REVIEWED ❑ REVISE AND RESUBMIT
❑REJECTED ❑ FURNISH AS CORRECTED
Corrections or comments made on the shop drawings during this
review do not relieve contractor from compliance with
requirements of the drawings and specifications. This check is
only for review of general conformance with the design concept
of the project and general compliance with the information given
in the contract documents. This contractor is responsible for
confirming and correlating all quantities and dimensions;
selecting fabrication processes and techniques of construction;
coordinating his work with that of all other trades; and performing
his work in a safe and satisfactory manner.
FROELICH CONSULTING ENGINEERS, INC.
DATE: 11-1 1-2021 BY: TWN
4284 W 7th Avenue.Eugene,OR 97402 1541-342-4509 www.essexgc.com
17400 SW 65th Avenue.Lake Oswego,OR 97035 1503-747-0092 CCB#OR 54531 I WA ESSEXGC852JC
nWDY Structural • Civil Engineers
STRUCTURAL CALCULATIONS
FOR
DARTMOUTH APARTMENTS
DELEGATED DESIGN STEEL
STAIR RAILINGS & ACCESS LADDER
TIGARD, OREGON
AUGUST 11, 2021
11051311444,
PRoiFir
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(44
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['RENEWS: 12-31-2022
WDY Project#20811
DESIGN PARAMETERS: 2019 Oregon Structural Specialty Code (OSSC)
LOADING:
LADDER
UNIFORM LIVE LOAD 100 psf
CONCENTRATED 300 lbs (treads)
RAILINGS 50 plf or 200 lbs
CONTENTS:
RAILS RL-1 to RL-2
LADDER LD-1 to LD-6
6443 SW Beaverton-Hillsdale Hwy,suite 210•Portland,OR 97221 •ph:503.203.8111 •www.wdyi.com
•
FlW D Y Structural • Civil Engineers
Job Name: Dartmouth Apt DFS -Int Stair Rails Job No: 20811 Sheet No: RL-1
Client: Instafab,Inc. Date: Aug 2021 By: GGM
Stair Grabrail E24-E27
R16
Design loads:
Top rail & posts: 50 plf Uniform load applied at top
or 200 lbs Concentrated load applied any point
Selected piece: Pipe 1-1/4 Std
Max span = 35.0 in
MMAx(uniform Id) = 638.0 in-lbs
MM,x (point Id) = 1,750.0 in-lbs
Z= 0.324 in3
S = 0.222 in3
I = 0.184 in4
Fy= 35,000.0 psi
Mp= 11,340.0 in-lbs AISC F7-1
1.6My= 12,432.0 in-lbs Yield moment S Fy
Mn = 11,340.0 in-lbs
Mn / = 6,790.4 in-lbs OK
ATE (concentrated) = 0.03 in
L/240= 0.15 in OK
Use Pipe 1-1/4 Std
rliW D Y Structural . Civil Engineers
Job Name: Dartmouth Apt DFS-Int Stair Rails Job No: 20811 Sheet No: RL-2
Client: Instafab,Inc. Date: Aug 2021 By: GGM
Brackets
Wagner Bracket:
Rated load = 300 lbs > max 200 lb load requirement
Wood:
3/8" dia lag allow= 305.0 lbs/ in
penetration depth = 1.25 in
Allowable tension = 381.3 lbs > max 200 lb load requirement
Concrete:
1/4"dia titen allow= 365.0 lbs/ in
penetration depth = 1.5 in
Allowable tension = 547.5 lbs > max 200 lb load requirement
1fr.�M.a
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cte.r Nobs
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'r,>Mount ,Batt Z r.>
rIWDY Structural . Civil Engineers
bawd
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-1
Client: Instafab,Inc Date: Aug 2021 By: GGM
Design Criteria /,,,,
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Design per 2019 OSSC Sections 1607.1 and 1607.8.1 and ASCE 7-16 Section 4.5
Concentrated Load: 300 lbs Treads
2 x 300 lbs System (for h > 10 ft)
System Load: 500 lbs
Railings 50 plf Uniform load applied at top
200 lbs Concentrated load applied any point
100 lbs Concentrated load applied any point at extensions
Components: 50 lbs applied over 1 sq ft area
Max Deflection: L/240 for LL
nIWDY Structural • Civil Engineers
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-2
Client: Instafab,Inc Date: Aug 2021 By: GGM
Design Loads
8 Y-7'S y 2.11Y3
r�
LADDER WAN -
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•\• 300#
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"p i �4 b le i
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CAa14ta �� 100# I I
\ any point1 3�7a,� •� e�Di
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bTMP>T. ' am,7a22) \ I i
\ 50 plf or i~
\ 200# I
(3 7q2) \ I I
if
500#total` '
system load \� v i, i
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flW D Y Structural . Civil Engineers
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-3
Client: Instafab,Inc Date: Aug 2021 By: GGM
Ladder rungs
Design loads:
Rungs: 300 lbs Concentrated load applied at mid point over 4"
+ impact load of 30% 90 lbs
Side rails: 200 lbs Concentrated load applied any direction
Rail extensions: 100 lbs Concentrated load applied any direction
Rungs:
Ladder width = 30.0 in
Selected pc= 1-1/2"x 14 ga Grip Strut Tread
Stair Treads - Load Table
Load data below takes eccentric loads into consideration.Although load values include allowances
for normal impact conditions and usual pedestrian traffic, be sure to make provisions in the struc-
tural design for special uses and loads involving unusual Impact forces or vibratory forces. Load-
carrying capacity of stair treads increases as side channel height and gauge of material increase.
2-Diamond 3-Diamond 4-Diamond 5-Diamond
Steel Gauge 14 12 14 12 14 12 14 12
Span Height U C U C U C U C U C U C U C U C
2'-0" 1-1/2" 1191 472 1576 624 761 443 1006 587 549 435 750 595 434 425 575 563
2" 1978 783 2513 995 1262 737 1604 936 911 604 1158 917 721 573 916 897
2'-6" 1-1/2" 764 378 1011 500 488 356 645 470 353 349 481 476 278 342 369 452
2" 1268 611 1611 797 810 590 1029 750 584 578 742 734 463 566 587 719
3'-0" 1-1/2" 532 315 703 418 340 300 450 393 245 300 335 398 194 300 258 378
2" 882 524 1121 665 563 492 716 626 407 483 517 614 322 473 409 601
4'-0" 2" 498 394 633 501 318 372 404 472 230 364 292 463 182 356 232 454
2 DIA, 3 DIA. 4 DIA. 4 DIA. 5 DIA, 5 DIA.
Material Alum. Alum. Alum. Stainless Alum. Stainless
Gauge .080" .080" .080" 304 .080" 304
Span Height U C U C U CUC UCUC
2'-0" 2" 1328 526 862 503 607 481 610 483 396 388 394 386
2'-6" 2" 850 420 551 402 388 392 390 387 253 388 252 381
3'-0" 2" 590 350 383 335 270 327 271 323 176 321 175 319
4'-0" 2" 332 263 215 252 152 245 152 244 99 241 98 241
Intermediate stringer Is recommended for spans over 4'
Plate section mod, Z= 0.094 in3
Plate bending, M = 1,125 in-lb
Mn/!Zb= 2,026 in-lb
Use 1-1/2"x 14 ga Grip Strut Tread rungs
Rung to side rail connection:
Max load = 390.0 lbs assume load applied adjacent to attachment
Total weld length 4.0 in
3/16"fillet allowable= 2,784 lbs/in
Capacity = 11,135 lbs
Use 3/16"fillet each side typ rung to C6
nWDY Structural . Civil Engineers
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-4
Client: Instafab,Inc. Date: Aug 2021 By: GGM
Access ladder components
Design loads:
Rungs: 300 lbs Concentrated load applied at mid point over 4"
+ impact load of 30% 90 lbs
Side rails: 200 lbs Concentrated load applied any direction
Rail extensions: 100 lbs Concentrated load applied any direction
Side rails:
Step width = 30.0 in
Uniform load = 125.0 plf -.012krft
Concentrated loads = 300.0 lbs 11.11`
Pull load = 200 lbs at top rung t:
}i
Grab rail ill
Span = 60.0 in Ill
i\
P = 200 lbs
M = 3,000 in-lbs 1 \
Z= 0.31 in2II \
S = 0.22 in2 2k
Mp= 10,980 in-lbs AISC F7-1 4 .2
1.6M = 12,432 in-lbs Yield moment S Fy �113
Y
Mn = 10,980 in-lbs 4
Mn / 1 = 6,575 in-lbs OK Ili,
1-1/4 Pipe Std ill
Offset pipe 1
MMAX = 2,400 in-lbs M4 1111
Z = 0.31 in2 1,11
�`
S = 0.22 in2 .:I1,1
Mp= 14,260 in-lbs AISC F7-1 1.6My= 16,192 in-Ibs Yield moment S Fy
Mn = 14,260 in-lbs Iy
Mn / c?. = 8,539 in-lbs OK -01 �I.l
1-1/4 Pipe Std
-127
0.4'11
nWDY Structural . Civil Engineers
u
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-5
Client: Instafab,Inc. Date: Aug 2021 By: GGM
Pl.Stringers
0-, = Wpm
ilY
It
111,--
111 *BM
Vert run: 12.00 ft
Max length: 12.46 ft (sloped distance)
Design LL: 300.0 lb point load
Tributary Width: 1.25 ft
Equiv uniform LL: 52.0 plf
Rails- 2.9 plf Rail weight
Treads- 7.4 plf Component Wt(plf) Quantity Total
Misc/fasteners- 1.5 plf top rail 0.00 0 0.0
Stringer self wt- 8.2 plf grab rail 2.27 1 2.3
offsets 0.20 3 0.6
Uniform DL: 20.0 plf pickets 0.00 0 0.0
Adjusted UDL: 23.0 plf Total plf 2.9
MMAX= 289.0 ft-lbs
Rv(max) = 411.0 lbs
RH(max) = 127.0 lbs
W D Y Structural . Civil Engineers
blood
Job Name: Dartmouth Apt-DFS Ladder Job No: 20811 Sheet No: LD-6
Client: Instafab,Inc. Date: Aug 2021 By: GGM
Stringers (cont'd)
Selected Shape
C 6x8.2 Zx= 5.16 in'
Ry = 0.536 in
Fy= 36,000 psi
Lp = 26.8 in
Lb = 14.0 in (distance between points of lateral bracing)
Mp = 185,760 in-lb
Mn / = 111,234 in-lb
9,269 ft-lb
MMAX= 289 ft-lb--> OK
Use C 6x8.2
**Treads to be positively attached to supports to provide lateral torsional bracing
Connections
PMAX= 127 lbs - lateral
PMAX= 411 lbs - bearing
TMAx= 180 lbs- tension
bearing area provided A= 7.5 sq in
bearing stress fc= 55 psi
Allowable Fc= 1450 psi
1/2" lag allowable Z// = 480 lbs
Tension allowable 291 lbs per in NDS Table 12.2A
Provided depth d = 2.5 in
Tension capacity 728 lbs
Use 1/2" dia lag bolts, (1) each base
+ (1) each top clip angle (2.5" embed)
FOR OFFICE USE ONLY—SITE ADDRESS:
This form is recognized by most building depaitnuents in the Tri-County area for transmitting information.
Please complete this form when submitting information for plan review responses and revisions.
This form and the information it provides helps the review process and response to your project.
City of Tigard • COMMUNITY DEVELOPMENT DEPARTMENT
11 III 4 Transmittal Letter
T I G A R n 13125 SW Hall Blvd. • Tigard, Oregon 97223 • 503.718.2439 • www.tigard-or.gov
TO: TOM DATE RECEIVED:
DEPT: BUILDING DIVISION
RECEIVED
FROM: ELIOT ADAMS
COMPANY: ESSEX GENERAL CONSTRUCTION,INC. „AI OF-T GAIi J
PHONE: (503)951-9912 Ifl 1Nt" t)'I Sk) 4 By:
EMAIL: ELIOT.ADAMS@ESSEXGC.COM
RE: 11974 SW 72ND AVE BUP2019-00346
(Site Address) (Permit Number)
DARTMOUTH APARTMENTS,LOT 31
(Project name or subdivision name and lot number)
ATTACHED ARE THE FOLLOWING ITEMS:
f ':
:Copies Description„ '„ }i '`'' ,.; Copies: Description: tr#C i,, # r,.`} ., # 31 i`
Additional set(s) of plans. Revisions:
Cross section(s) and details. Wall bracing and/or lateral analysis.
! ;i Floor/roof framing. Basement and retaining walls.
•
F Beam calculations. 2 Engineer's calculations.
`? (, 2 Other(explain): snap Drawings
?, +` REMARKS: DEFERRED SUBMITTAL:Stair Railings&Ships Ladders
VALUATION:$14,500
i
I
`1 Routed to Permit Te ician: Date: la- ) 3-- 2 i Initials: -'
Fees Due'`Z E No Fee Description: Amount Due:
i '14 ;ig lf; r 11411i i t i z t t P f ar#' ±; 1 h. 7:-.1. U ! V c esS 1 $ / 6'
H 'e
peels.
Instructions: _
Reprint Permit(per PE : [ Yes No _ Done
Applicant Notified: Date: /A hsia?) Initials: -