HomeMy WebLinkAboutEngineer's LetterFl l-l e EI Fl r'o o,NG s vsr€¡ee .,n.,u.
1050 Nonh Watery Iane
Brigham City, UT 84302
Ph: (435) 919-3 100
Fax: (435) 919-3101 Ç!l': ""'1'"-r'l
Versíon 202 1.05. I I (5/I 8/2 I)
March22,2022
Crisalq Inc.
37174 Devon Wick Ln
Purce[vi[e, VA20l32
Attn.:
Proiect Location: Rifle, CO 81650
NBG Proiect #: U2lXl224^
irL¡.iï ¡ I ;it'.'t
Proiect Name: Kuhn Aviation Hansar
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This Iætûer of Desþ Certification e,nsures that the materials fumished by the metal building supplier are dasigned
in accordance with the information specified to the metal building supplier on the order documents and summarized
by the loading information listed below. The Project Engineer of Record (not the metal building supplier) is
responsible for veriffing that the building code and desþ loads me€t any and all applicable local requiremeirts.
The Professional Engineer whose seal appears on this Letter of Certification is e,mployed by the metal building manufacturer.
and does not serve as or rqlresent the Engineer ofRecord for this project and shall not be constn¡ed as such.
DDSIGN LOAD CRIIERIA:
Structural Loads Applied in General Accordance with:
MBMA Occupancy Importance Classificationl
IBC 2015
tr - Standard Buildings
PROJECT-}VIDE LOADING INFORMÄTION:
Ground Snow Load: 40.0psf
Roof Live Lo¡d: 30.0 psf
Snow Exposure Factor,Ce: 1.00
Not Reducible Pel Code.
Snow Imp. Factor, Is: 1.00
DesignWindVelocity: ll5 mph
Is Roof to meetUL 90 Requirements?: No Inoortance Factor- Iw:1.00 Wind Exoosure: CWind
Seismic Criteria:
Design Sds / Sdl:
Seis. TmF. Factor, Ie:
Seis. Design Category:
Ss: 0.307 S1: 0.080
0.318/0.129
1.00
B Site Class: D
. 20% of flat roof snow included in seismic calc's.
Analysis Procedure: Equiv. Lat. Force Procedure
Basic SFRS: Not Detailed for Seismic
Snow Coefficient Snow Load Wind Seismic
*Prinnty StructuraI Not Included
applied in conthination x'ith Dead and Collaterql l.oads. Roof Srrow itt other loatling condilions ís deternúned per the specified Building Code.
Mezzanine Information:
Floor Dead Load: N/A Floor Collateral Load: N/A Floor Live Load: N/A
A 47.9
1.4
t.4
B
c
Collateral Dead psr
Ct Cs Ps lnsfl **Pm losfl Enclosure GCoi R Cs
RoofDead
(nsfl*Pri (ps0 Sec (ps0
3.5 5.0 5.0 l.l t.00 30.80 40.00 Enclosed + 0.18 3.00 0.106
3.5 5.0 5.0 l.l t.00 30.80 40.00 Enclosed +0.t8 3.00 0.t0ó
5.0 5.0 l.t 1.00 30.80 40.00 Enclosed + 0.18 3.00 0.1 063-5
Crane Infomration:
No cranes on building.
Roof-Too Unit Infomration
t @#2s0
Blâck
i
Trevor
i
The design of sfructural members supporting roof gravity loads is contolled by the more critical
effect ofrooflive load or roofsnow applied in accordance with the governing building code.
DESIGN STANDARDS REFERDNCED:
. AISC Specification for Stn¡ctural Stecl Buildings - Stecl Constn¡ction Manual, l3th Edition, @ 2005.
. AISI North-Ame¡ican Specification for the Desiga of Cold-Formed Steel Stmctures, @ 20(X Edition.
. IBC codes are designed in accordancc with ASCET-05 Edition.
. MBMA Low Rise Building Systems Mmual, låtest Editiotr.
. Arùr'S l_atest Edition ofStn¡ch¡¡al 1¡relrling Code.
. No buyout sÍuctural components provided on this project.ÃTBTF
Professional Seal
