HomeMy WebLinkAboutB16-0278 Engineering letter.pdfKURTZ & ASSOCIATES, INC. STRlrCTURAL CONSVLTAN'IS
5012 County Road 154
Glenwood Springs, CO 81601
MEMORA'iDUM
To. Town of VaiJ Building Depa1·tment
Re: Campbell Residence Remodel and Addition:
4791 Meadow Lane, Vail, CO.
Phone(970)9456105
December J 2, 2016
Our office is the structural design engineer for the noted repair project As such ..
our office issued construction documents dated June 28, 2016, and revised documents
dated September 07, 2016
The noted project indude.s a single stmy, single bay garage addition There is a
roof deck over the garage framed with 9.1 /2" BCJ (1.vood rnanufactured T joists) joists
At the back of the residence the living/dining area was expanded. A portion of that
expansion was framed with wood sawn 2 x l 0 floor joists The construction documents
which our office issued specified, \vhere appropriate the following joist hangers:
9.1/T BC!: Joist fianger nr\-2.37/9 5 wl (lO}-\:o. !) x 2 l/2' vVood Screws to support
2 x lO's Joist Hanger LL-2 l 0 with ( l 0 J-'\o 9 x 2. UT \Vood Screws to support
I understand that in .some instances these hangers were installed using No 8
screws rather than the specified No 9 screws This ->ubstirntion represents a 1 5%
reduction in installed hanger capacit~.
The minimum number of structurally acceptable screws for each hanger is as follows:
IUS-2 37/9.5 (9 l!T BCJ) (8}-?\o 8 x 2.1/2'" screws (Hanger Capacity '·' 810 LBS)
LC-210 (2x J 0) (8)-'\o. 8 x 2 liT screwi; (Hanger Capacity-, 810 LBS)