HomeMy WebLinkAboutCorrespondence-Snowload CorrectionColleen WirthFrom:Sent:To:Subject:Colleen WirthTuesday, May 2,2023 10:49 AMEvan BirschbachRE: BLRE-O4-23-8064 - BLAKE residence is now UNDER REVIEWCarraeVad*zce-Snau,ba/ Ar.ehøt9n frlt rcær/Hello Evan,Thanks for clarifying snow load for the BLAKE residence.l'll photocopy the email correspondence and staple it to the issued FIELD COPYNo need to resubmit the general specifications page.l'll "redline" sheet S1.1 and direct readers to the email attached.Colleen W¡rthBuilding Plans ExaminerGarfield County Community Development108 8th Street, Suite 401(970) 945-1377 ext L610cwi rth @ ga rfie ld-co u nty.co mFrom: Evan Birschbach <evan@weeksinc.com>Sent: Tuesday, May 2,2023 8:10 AMTo: Col leen Wirth <cwírth @ga rfield-county.com>Subject: RE: BLRE-04-23-8O64 - BLAKE residence is now UNDER REVIEWHello Colleen,No, the roof snow load and ground snow load in the general notes on sheet 51.1 was a typo on my part.The correct snow loads that were used for the design calculations were: Roof snow load = 40 PSF and the ground snow load = 48 PSFPf = O.7*Ce*Ct* l* Pg40 PSF = 0.7*(1.2)*(1.0)*(1.0)*48 PSFPlease let me know if you need to see revised structural plans with the correct snow loads listed1
Thank you,Evan Birschbach, EITStaff EngineerWeeks & Associates, lnc.4730 South College Ave., Suite 201Fort Collins, CO. 80525(970)225-2422utE!Ë!H5å EIggtrIETEITE!5hrjtr,¡ r ¡deFrom: Colleen Wirth <cwirth @ga rfield-co u ntv.com>Sent: Monday, May L,2023 4:30 PMTo: Evan Birschbach <evan@weeksinc.com>Subject: BLRE-04-23-8064 - BLAKE residence is now UNDER REVIEWBLRE-04-23-8064 - BLAKE res¡dence 657 Old M¡dland Spur, Oak Meadows, Lot 43Evan,l'm currently performing the building code compliance review for the BLAKE RESIDENCE and have a question on SNOWLOAD DESIGN.Pursuant to submitted architectural sheets and the grading and drainage plan, the future home build appears to be proposed at elevations between 6,951 and6,960 (basement, main level/ garage level).Garfield County, Colorado has adopted the attached policy documents and reference for Snow Load Requirements.We consider sites up to 7,000 ft in elevation to require a ROOF Snow load Pf = at minimum 40 PSF.Blake Residence sheet 51.1 General Notes and Specifications list"Roof Snowload" = 50 PSF ??? ls that Pf = 50 PSF ??And your Ground Snow Load = 35 PSF??? ls that Pg = 35 PDF?? ls that correct?Feedback: We have more commonly have seen a higher PSF for the Ground snowload Pg (and a resulting lower PSF for the Roof Snow Load Pf).I am not a structural engineer and am erring on the side of caution and ask to verify to ensure the design is adequate.I do appreciate your explanation and time,2Cordially,
Colleen W¡rthBuilding Plans ExaminerGarfield County Community Development108 8th Street, Suite 401(970) 945-1377 ext 1610cwi rth @ ga rfie ld-co u ntv.com3