HomeMy WebLinkAbout3638 VOYAGER LN - SPECIAL INSPECTIONS - 2/12/2021CSE Consultants
1520 E. Mulberry St. Ste 210
Ft. Collins, CO 80524
Ph. (970) 282-8005
e-mail rllcse@qwestoffice.net
February 12, 2021
Mr. Bob Peterson
ABD Designs
4803 Innovation Dr., Suite 1
Fort Collins, CO 80525
Re:3638 Voyager Lane
Fort Collins, Colorado
CSE Project No. C9005-153
Dear Mr. Peterson:
CSE Consultants has reviewed the requirements for enlarging an existing sliding door to a new wider 9'-0 width
sliding door at the entry to the rear deck per the architectural plans provided (refer to ABD Project No. 4112 sheet
A1.0 dated 12/14/20). The new opening supports approximately 43½ foot span roof trusses and 12'-10" maximum
span second floor joists. A roof snow load of 30 psf; a Basic Wind Speed Vult = 140 mph (Allowable Stress Vasd =
108 mph), Exposure C; and a floor live load of 40 psf were used in this 2018 IBC structural review.
Refer to previous December 15, 2020 letter - the (2) 1 3/4 x 11 7/8 LVL depth is not possible per ABD and a (3) ply
header is feasible at this wall. Recommendations for revised header at the new opening are as follows:
New 9'-0 width Sliding Door Opening:
New Header:(3) 1 3/4 x 9½ laminated veneer lumber (LVL). Fb = 2600 psi min, E = 2000 ksi min.
New Trimmer Studs:(2) 2x6 Hem-Fir No. 2 or better
New King Studs:(2) 2x6 Hem-Fir No. 2 or better
Sincerely,
CSE Consultants
Ron L. Lindburg, P.E.