Report (67) , St/ ScG1016 //".
STRUCTURAL CALCULATIONS
New HVAC Unit
PROJECT:
Firenza Pizza — Tigard
12280 SW Scholis Ferry Road
Tigard, OR 97223 JAM 17
CTi
for
UNIVERSAL HVAC
PO Box 1950
Gresham, OR 97030
,clest)CTup CO‘ 14„,‘,D PROf4:1,
•"k
4z15 \-N,G1/44.:E.
4:tc. 18346PE
James G. Pierson, Inc.
XPIRE-5. 6-30-19
James G. Pierson, Inc.
Consulting Structural Engineers
610 S.W.ALDER SUITE 918 PORTLAND,OR. 97205
(503)226-1286 FAX 226-3130
January 16,2018
OFFICE COPY
r i
HVAC Unit on Roof
LOCATED IN TIGARD OREGON
FIRENZA PIZZA
12280 SW SCHOLLS FERRY ROAD, TIGARD, OR
GENERAL DESIGN LOADS:
Project is designed in accord with requirements of the 2014 Oregon Structural Specialty
Code. For this location, the following design parameters apply:
Occupancy Category II
Seismic Site Class D, Design Category D, Sds=0.719, Sd1=0.445
GENERAL PROJECT SCOPE DISCUSSION:
This project involves the installation of a new 980 lb mechanical units to the flat
roof area of the existing building located at 12280 SW Scholls Ferry Road in Tigard for a
new Pizza tenant in the space next to the Burgerville space in the strip mall. The unit is
59"wide, 88"long, and 50" tall.
Existing framing plans and detail drawings were not available although the
member sizes and spans were provided plus the unit is being installed in the mechanical
unit zone that seems to if been pre-determined during the design of the building. No
issues found for the vertical support of the unit.
The HVAC units were also checked for seismic forces and found to not have an
overturning concern. The lateral sliding will be resisted by screwing the new curb to the
roof with(6)#14 screws(minimum) or using Simpson A35's at each side of the curb
(48" o/c max. spacing).
Page 1 of 13
/71
1 /
L __r/
ADJACENT
E COMMERCIAL
gm 208W3F1 SPACE
(Burgerville) ..
I
1 1
, 1
1 1
1 I
AREA OF TENANT IMPROVEMENT-ALL I I
I I
OTHER AREAS NOT PART OF THIS PROJECT I I
-111
7:Itq°'01,i;
6 .„.ANELA-,,tit5.?:-,-,t,v,,, ,tp;:::-..,•,:i!,,,,144(N)OUTDOOR DINING
1.... ,Nd4 "'"'"'74,, --''''''''''''' --4 400 sq ft
p,Arietc3,, (N)Fl",i1A PIZZA:, , , .,. ,
'...Ek.,1'.1,97f!# -04-i IN otatinfig0 ic'', 1
1
M (E)GREASE A:VOW
INTERCEPTOR—
LOCATION
II 7---11
\
\ New 980 lb
Mechanical Unit
Location on Roof
Project Job no.
James G. Pierson, Inc.
Consulting Structural Engineers Location Date1-zarci,D P
610 S.W.Alder,Suite 918 Portland,Oregon 97205
Tel: (503)226-1286 Fax: (503) 226-3130 Client Sheet no.
Page 2 of 13
Ve), co,‘ ciNca Lc°
-6-0a -Eft, (Lq arL 1---D/ 2?t ss cvS.. t-or cavu:k .bott-royy, coed
ckAck 1-3' 6i).- \‘t" 01A:a ttA-151A tcAy C,ra 4c K
Lock_ctS'.
Pvo ?DE (,-; pc t- ; Loc:d
A-C LC)Azt /t6 gilt.0 LI)
tr
P
--/
ir•
Lf
L 5 PS. y b
t- A-cD
F
R-c) RTl, -14) •
F151-71 liroS-3o Calato/
if" TO flu2_NA 6")i. t:-.Dc 611,1• bo"c-ftsres,
C,1".crict
F 0,-ktç f 1
to—att0,3 2- 1650
le' i
Project Job no.
James G. Pierson, Inc. _r),(eya.e.A._
Location Date
Consulting Structural Engineers ,
610 S.W.Alder,Suite 918 Portland,Oregon 97205-
Tel:(503)226-1286 Fax: (503) 226-3130 Client A Sheet no.
Page 3 of 13
--p L
(
crcrRt Lec-&-)
',‘
+ 1 \
1°) 5nLi
Pct > 2V
.S-1))` S'')(17•'<) ± (490 =
RL (—Ls
179 /-L
4c)
Ijkv-tAx e ,0
qt[ . qo t)
ct•Y_
zfC) 54,ti •
a.Li Occt,/ cts X 10 I Z.tD 16.g)
lc,111
ae-/-1,01-CP.11 •
C.-11:01
I1
a LI Lt 0
For LOD(S C .c.a Cceiv,,,(0 6k1Lut,„,,a P%-itt\0 LtoS, ce.hril
pt
---2> 1-o + t,2,6 cca
(e) et.ccQ_ o cNcteb-*trynO ne-A-") P=r0 q•
Tl
araar,
Project Job no.
James G. Pierson, Inc. R.vvyk Ise\
Location Date
Consulting Structural Engineers
610 S.W.Alder,Suite 918 Portland,Oregon 97205
Tel: (503) 226-1286 Fax: (503) 226-3130 Client Sheet no.
Page 4 of 13
C..„orky,e.c.f-joy\ •
•
(po-p\est Obv-rt-f016 vIC
•
1-4 ° hsek---DN/C-Pv[9Thlt.A.C? C.,e_DIti C.iLiWi_S Ut,eckeil •eQjeAr
.1-6•S (CkV1P CUYt'. C,t41)
6
F115r1 eC—VI b 'VcN 6'•
9b0 J.,L• - •
•
r`oc) ck--
( a) - 76 L-t\A DY\ •
.(:1YY,r) C.-kr.T 'co Y0c4
(Thi wittn e9, „kE
•
Project Job no.
James G. Pierson, Inc.
Consulting Structural Engineers Location DateTv-cc,' k
610 S.W.Alder,Suite 918 Portland,Oregon 97205
Tel:(503)226-1286 Fax: (503) 226-3130 Client Sheet no.
Page 5 of 13
Seismic Design Forces on Mechanical Units
Task: Determine the seismic forces and required connections for HVAC equipment AC-1
installed onto the roof of a structure. The vertical adequacy of the roof for the weight of
the equipment and other dead and live loads is beyond the scope of this section of the
analysis and is by others unless specifically noted herein.
References: 2012 IBC (2014 OSSC) Section 1613.1
ASCE 7-10 Section 13.6 for mechanical components and systems
113+2019 Design tam.Summ.+y R¢pat
Criteria: (SGS Design Maps Summary Report
User—Specified Input
Building Code Reference Document 4S4t 7 70 5 a a d
Seismic Design Category I),
m,,,, Site Coordinates 45.44519°N 122 796214V
Component Importance Factor Site Soil Classification ade Class D Self Sod'
;Ip= 1.00 Risk Category UIIJll2
;Latitude =45.44519t495455
;Longitude=-122.79621 d
,� �e ii fi x ' L'I�
Site class D �� •
. r� r F �t
04 y �� -� _ tit
Risk Category II
;Wp=980 lb
;h=49.4 ina '3 - ;r' .
;w=59.5 in '� :1
;1=88.1 in
�t
9 �r,�� ���`,� ��°' ,. �. v �,. � �' �� •arm
USGS—Provided Output
Mapped acceleration parameters (Section 11.4.1) 5, -0.970.9 S = 1.0,99 S+.,= 0.7198
at short period; ;Ss=0.970 5 0 424 t, S e 0 66tz 5 `445 g
at 1 sec period; ;Si =0.424
are t ) tt oris.ti ,. .t.e rt u: .rY.a;.pi c3:rn nnu
�,xs� Hca.=ar, se.,��N 3pr_tr:nn
Site coefficient; ;;at short period
(Table 11.4-1)
;Fa= 1.1
at 1 sec period (Table 11.4-2);
Fy= 1.58
ri
Spectral response acceleration parameters
at short period (Eq. 11.4-1) Au.,�,C and t.,van., ,>a.r9 tnn dead.
;SMS=Fa x SS= 1.067
at 1 sec period(Eq. 11.4-2)
;Sim =FyxS1 =0.670
„bnuak�.uay�tgevlrnlhlase.r�epacsin+nanaryp.71caroute`minimal3latI ea4S4'151 ��ng'' .'.1,79d2138.4C,ass.38dskraleg.. 111
Design spectral acceleration parameters (Sect 11.4b.�4 a
Source: http://geohazards.usgs.gov/designmaps/us/application.php
at short period (Eq. 11.4-3) ;Sus= 2 /3 x Sim=0.711
at 1 sec period (Eq. 11.4-4) ;Sum =2/3 x SM1=0.447
Page 6 of 13
Application of OSSC and ASCE 7-10 Requirements:
Section 13.3 Attachments for floor or roof mounted equipment greater than 400 lbs in weight
need to be designed for seismic forces
Section 13.3-1 - Design for Total Lateral Force
apCax
F = 1+3— W
=4.00QIPWTotal R
design lateral force P p \ hr Eq. 13.3-1
Except that: Fp >0.7Ca/p Wp and Fp <_4Ca/p WI (32-3)
Table 13.6-1 - Horizontal Force Factors, ap and Rp
Electrical,mechanical and plumbing equipment and associated conduit and
ductwork and piping. - ;ap =2.5 ;and ;Rp=6.0
Unit on flat roof above mechanical room so ;hx=20 ft ; hr=20 ft
Load Combinations -Members and the connection design shall use the load combinations and
factors specified in Section 2.3.2. The reliability/redundancy factor may be taken as 1.0 and Fp is
substituted for Qe.
Design Lateral Force:
;Fp=0.4 * ap * SDS* Ip /Rp* (1 +2 * hx/hr) *Wp ;Fp=348.553 lbs ;Eq. 13.3-1
Fp need not exceed;Fpi = 1.6* SDs* Ip * Wp= 1115.371 lbs ;Eq. 13.3-2
Fp shall not be less than ;Fp2= 0.3 * SDs* Ip * Wp=209.132 lbs ;Eq. 13.3-3
The design is controlled by; Fp=348.553 ;lbs
Page 7 of 13
Overturning:
Overturning will be controlled by Equation 2.3.2-7 of the Basic Load Combinations for Strength Design
which is:
0.9 D + E ;;
In this equation, according to ASCE 7 the value of E shall include
;;
E=pQe-0.2 Sds D = 1.O Qe - [ 0.2 X SDs X WP] ;=Qe—;0.142 ;D
Therefore,when substituting Qe Equation 16-18 becomes 1.0.758 ;D +E
Assume Center of gravity of unit and curb is located at center of height. The following forces apply to
allowable stress stability calculations using Equation 16-18 as modified for Qe
Unit Mass= L0.758 ;D ;=742.579 lbs
;Fp=348.553 ;lbs
,sas,
; = 59.500 in
Cabinet
;Fp=348.553 lbs
; =49.400 in,
• itMass= 742.579 lbs
Floor
V
Compute Stability about bottom of curb c/c FLANGE BEARING
Page 8 of 13
r '
;h=49.400 in
;h/2=24.700 in
; =59.500 in
;w/2=29.750 in
;w/2=29.750 in
; =29.750 in
;Overturning_Moment=Fp x h/2)=8609.267 lbs_in
Curb ;Overturning_Moment, =Fpcurb x 12 in=853.600 lbs_in
Total Overturning Moment= ;=9462.867 lbs_in
;Restoring_Moment=(UnitMass + ) x w/2 = 26600.229 lbs_in
Safety Factor Against Overturning=26600/9463 = 2.8
From this calculation, it is demonstrated that a typically proportioned mechanical unit is
ordinarily stable against overturning without benefit of hold down anchors. Overturning will not be a
problem unless the height of the unit is greater than two times the width.
Page 9 of 13
Base Connection From Curb to Roof Diaphragm:
For typical roof top units, seismic attachment becomes a relatively simple matter of making a positive
connection from the standard steel channel curb into the roof diaphragm system.
For a wood roof system, it will ordinarily be more convenient to use working stress values for connector
designs. Generally, it will not be necessary to go beyond the connector(screw of lag) design as the
relatively small horizontal forces can be absorbed by the roof diaphragm.
Most mechanical curbs come pre-punched for base screw of lags, and many mechanical subcontractors
will habitually use lag screws for this attachment. Often these lag screws are found to be 3/8" diameter,
apparently stemming from standard plumbing/mechanical braces &brackets fabricated for"SMACNA"
standard applications. The use of 3/8" diameter lags is unnecessary(but certainly acceptable)and smaller
connectors are also acceptable.
Examples of Suitable Connectors:
Simpson SDS 1/4 x 2 screw
Shear Capacity in D.F. 303 lb with 10 gage side plate
327 lb with 3 gage side plate
1997 NDS 1/4"Dia. Lag Screw
G=0.49 D.F. Zif=220 lb ZPERP.= 160 w/10 gage plate <Error:
unrecognised unit 'D. . ..._HH°>< rror:missing semi-colon
(i)i>
Z11=260 lb ZPERP.= 190 w/3 gage plate
1997 NDS #14 Gage Cut Thread
Wood Screw
D= 0.242
G=0.49 D.F. Z= 182 lb w/10 gage plate< rror: unrecognised unit
" .F,°><i rror. missing semi-colon(;)>
Z=221 lb w/3 gage plate
The lowest value found above is 160 lbs for perp. to grain installation of 1/4" diameter lag. For
seismic shear this value would be 1.33(160 lbs)=213 lbs
Thus it seems prudent to construct a table using a conservative value of 150 lbs per connector, to
allow for any imperfections of connection installation such as minimal penetration or edge
distances, and base the table on the following screws or lags.
#14 x 2-1/2" Cut Thread Wood Screw
1/4"Dia. x 2-1/2"min. Standard Lag Screw
Simpson SDS 1/4"x 2-1/2" Hex Head Wood Screw
Page 10 of 13
f 4. i
/�
I\ �/ POSITIVE CONNECTION OF UNIT TO
v STEEL CURB PER REQUIREMENTS OF
ROOFTOP UNIT MANUFACTURER BUT
/ NOT LESS THAN CURB/ROOF ATTATCHMENT
r fair AIM
01
HVAC UNIT—
/ii
PRE-FAB CURB BY —' r, �-
CONNECTION OF STEEL-- -- NAILER
CHANNEL CURS TO ROOF v —FLASHING
FRAMING MEMBER OR BLDG 0 v v/ X
SEE SCHEDULE BELOW AND ✓v
UNIT MANUFACTURERS u V v RIGID INSULATION
RECOMMENDATIONS.DISTRIBUTEN63UUP/
SCREWS PERIMETER
LY AROUND / ROOFING-SEE ARCH
PERIMETER OF CURB N.6�
v y6` / / CANT STRIP-SEE ARCH
NOTE
COORDINATE EXACT DETAIL WITH U v , I�
HVAC UNIT MANUFACTURER ,v,5- SIV\,
0 y6N6
WAX
0 . v\/ —.ROOF DECK
F� V VAX.7 -,.
C'IAXIMUM WEIGHT OF MECH. HORIZONTAL SEISMIC FORCE MINIMUM NUMBER OF
UNIT a CURB/POUNDS) FORCE GENERATED IN UBC SCREWS OR LAGS FROM
SEISMIC ZONE 3(POUNDS: i CURB TO ROOF STRUCTURE 1
1000 343 4
1500 514 6
2000 686 i6
2500 851 g
3000 1029 E
4000 1311 IO
5000 1114 12
6000 2051 15
CONNECTORS ARE TO BE INSTALLED THROUGH THE BOTTOM FLANGE OF THE STEEL CURB
SECTION THROUGH TUE ROOF PLYWOOD SHEATHING AND INTO A WOOD FRAMING MEMBER
/OR WOOD BLOCKING)BELOW.VERTICAL SUPPORT OF THE WEIGHT OF THS MECHANICAL UNIT
13 A SEPARATE CONSIDERATION,AND SHALL RE PROVIDED FOR BY ARRANGEMENT OF ROOF
STRUCTURAL FRAMING NOT SHOWN SPECIFICALLY BY THIS TABLE OR DETAIL.APPROVED
CONNECTORS INCLUDE THE FOLLOUIING-LARGER SIZES MAT BE USED.
N4 X 2 1/2"MINIMUM LENGTH CUT THREAD WOOD SCRE'UI
1/4"DIAMETER X 2 1/2"MINIMUM LENGTH STANDARD LAG SCREW
"SIMPSON"SDSi/4 X 2 1/2"MINIMUM LENGTH HEX HEAD WOOD SCREW
Page 11 of 13
Unit Report For 8.5T
Project: —Untitled168 12/27/2017
Prepared By: 12:26PM
Unit Parameters Dimensions(ft. in.)&Weight '_ b.)***
Unit Model. 48TCED09A2A5-0A0G0 Unit Length• 7'4.125"
Unit Size• 09(8.5 Tons) Unit Width. 4' 11.5"
Volts-Phase-Hertz:. 208-3-60 Unit Height 4' 1.375"
Heating Type. Gas *** Total Operating Weight 980 lb
Duct Cfg• Vertical Supply/Vertical Return
Medium Heat *** Weights and Dimensions are app'iximate. Weight does
Round Tube Plate Fin Coils not include unit packaging. Approxi dimen:'ons are
provided primarily for shipping purposes. or ex.
dimensions and weights,refer to appropria- .roduc
data catalog.
Lines and Filters
Gas Line Size. 3/4
Condensate Drain Line Size- 3/4
Return Air Filter Type: Throwaway
Return Air Filter Quantity' 4
Return Air Filter Size• 16 x 20 x 2
Unit Configuration
Medium Static Option(Belt Drive)
Al/Cu-Al/Cu
Base Electromechanical Controls
Standard Packaging
2-Speed indoor fan motor controlled by VFD
Warranty Information
1-Year parts(std.)
5-Year compressor parts(std.)
10-Year heat exchanger-Aluminized(std.)
15-Year heat exchanger-Stainless Steel(std.)
No optional warranties were selected.
NOTE: Please see Warranty Catalog 500-089 for explanation of policies and ordering methods.
Ordering Information
Part Number Description Quantity
48TCED09A2A5-0A0G0 Rooftop Unit 1
Base Unit
None
2 Speed Fan Controller (VFD)
Packaged Rooftop Builder 1.49d Page 2 of 9
Page 12 of 13
Certified Drawing for 8.5T
Project: —Untitled168 12/27/2017
Prepared By:
12:26PM
NOTES:
OUTDOOR UNITED P.O.BOA IRAN ISIS DOCUxEXi IS INE IAOPSRTP OF GAAP[CA[OAPOAAitOX S SSIOX 0/15550 DPAXIXGS.......
1. DIMENSIONS ARE IN INCHES, DIMENSIONS UNIT COIL TYPE U K H TECHNOLOGIES srPAcust.AS ANDD 1s DLIITSPEP OP/N Tx[EXPRESS CONDITION TWAT TEE oa's NOT coxsnTurz PARC r[A(OAxxxc[OP
CARRIER 13311 PEXT3 XIF[XOT OF DISC[OSEO OA 5505 xi Ix01R CAAAIEP AC0[RTAXOE 0(COXIPACT.
IN I I ARE IN MILLIMETERS. 41 1/4 33 15 7/8 coPPOAATIOx•5 XPi ITEx COXS[X1.
4800-A08 RTPF [10481 [6581 [4031
2.(? CENTER OF GRAVITY
48TC-A09 RTPF 49 3/8 37 1/4 27 7/8 CONNECTION SIZES
3. DIRECTION OF AIR FLOW [1253] (946] [708]
48TC-Al2 RIPE d9 3/8 31 1/4 15 7/8 40-3/8 A 1 3/8" [35] DIA FIELD POWER SUPPLY HOLE
[12531 19481 [4037 110261 B 2 1/2' [641 DIA POWER SUPPLY KNOCKOUT
480C-D08 RTPF 41 1/4 33 154 /e
[11481 [658] [40311 C 1 3/4" [51]DIA GAUGE ACCESS PLUG
48TC-D09 RIFF 49 3/8 37 1/4 15 7/8 i D 7/8' [22]DIA FIELD CONTROL WIRING HOLE
[1253] L946] [403] 3/4•-14 NPT CONDENSATE DRAIN
48TC-D12 RIPE 49 3/8 37 1/4 15 7/8 ECONOMIZER HOOD 20-3/4 E
[1253] [916] [1037 (OPTIONAL) - [527] 1/2'-14 NPT GAS CONNECTION
481C-1)08 MCN% d1 1/4 33 23 F 3/4•-14 NPT GAS CONNECTION
[1048 [6581 [584.2] 1 G 2• [511 DIA POWER SUPPLY KNOCK-OUT
48TC-D12 MCH% 49 3 31 1/4 11
[1253/8 1 [9461 [279.1] �' "S ••• • •
RTPF-ROUND TUBE, PLATE FIN(COPPER/ALUM) - THRU-THE-BASE CHART (FIELD INST)
MCH%-NOVATION(ALUM/ALUM) ( } THESE ROLES REQUIRED FOR USE WITH ACCY KITS:
�� \\� 36-3/8 — 12-5/8 CRBTMPWROD2A01:GAS THRU CURB
III[II 1. A [6251 [3217 CRBTMPWR004A01:GAS THRU BASEPAN
'B 1111,`®',//�� RETURN AIR I- } AIRURN READ WIRE�\\\� �/ •
CONDUIT SIZE USE EO'D HOLE
�' THREADED R
ND SI SIZES (MAX.)
FILTER ACCESS PANEL y ` W 1/2• ACC. 7/8• [22.2]
• (TOOL-LESS) ..-- -4.-• E ALT. % 1/2' 34/ 7/8' [22.2]
CONDENSATE Y 1 1/4' (002,(104) POWER 1 3/4' [N.4]
CONDENSER // \DRAIN OPENING 128-3/4COIL �' IN BASEPAN
�, \ ��>a 37-5/8 40-3/8 Z P (004)3/4'FPT GAS 1 3/4• [44.41
1lal8E'\m//4,//ili)I: W [955] [10277
INDOOR COIL % SEETHRU (002)PROVIDES 3/4•FPT THRU CURB
\�Q"•`-e/////•4. THE BASE SUPPLY 4 FLANGE d FITTING. HOLE SIZE: 2' [50.87
ACCESS PANEL \��'"—--'U/ I CHART AIR
, BACK d69]16 a *r z
[4121 [3551 11 THRU-THE-BASE CHART (FIOP)
[279] FOR•THRU-THE-BASEPAN'FACTORY OPTION,
�r FITTINGS FOR ONLY X, Y.A 2 ARE PROVIDED. AA
FOR BELOW LISTED MODELS, A FIELD
- L 6-1/4 SUPPLIED 1/2•ADAPTER 1S REQUIRED
4 ]1597 BETWEEN BASE PAN FITTING AND GAS VALVE:
~—27-1/8—v [1001 HOOD 3-1/4 AX 48HCD,S408
14 183]
TOP [356]
25-1/2
H6d1]
1-1/4
4-5/8 1321 11-718
[178] [302]
LECTRICAL CONTROL BOX
DISCONNECT ILTER
A, LOCATION ACCESS PANEL
CONDENSER B, ;Ii' E STD.
COIL 0 - ^'"r CONDENSATE
OPi[ONALJ ®•
DRAIN •I
INDOOR BLOWER
OPTIONAL , 3 FACTORY ACCESS _
FACTORY INSTALLED
INSTALLED 1 27-7/8 DISCONNECT F 27-3/1 I ( OUTSIDE
CONVENIENCE I� [1097 • HANDLE 13-1/8 [706] AIR
All
-_-- OUTLET C� I _� [3311 ■'� SUPPLY AIR I' I ifkill7i
26
HANDLE [659]
�_� }� 6-5/8 _ -
B:: 11681 {{ 1151/ =
—.:B W40� (•� _ (•� ()� 11 571
3-3// MEN 7
1.1 W195] 59-1/2 [67]8 8-3/8 1167) 11771 6-1/8 4-3/8
[1510] TYP 37 [214] 37-7/8 1155] [1 131
[940] 19627UZI
42-3/8
m LEFT CURB WIDTH [10751 BAROMETRIC 123381
CO [2238] SUPPLY f RETURN RELIEF
o FRONT AIRjr
RIGHT AIR FLOW
co
SHEET DATE SSPEAOEDES 48TC 08-12 SINGLE ZONE ELECTRICAL PER
1OF2 03-08-10 11-24-08 COOLING WITH GAS HEAT 4804500085 F
Packaged Rooftop Builder 1.49d Page 3 of 9