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HomeMy WebLinkAboutFraming Field Observation Report 05.17.19KURTZ & ASSOCIATES, INCORPORATED Structural Consultants 5012 County Road 154 Phone & Fax (303) 945-6305 Glenwood Springs, CO 81601 FIELD OBSERVATION REPORT TO: Garfield County Building & Planning ATTN: Matt Provost COPY TO: Uriel Mellin THE FOLLOWING WAS OBSERVED: DATE: 05/17/2019 (2:00 PM) PROJECT: TBD Pinyon Woods Lane Lot No. 6, Calicotte Ranch Subdivision Garfield County, Co. OWNER: Uriel Mellin PRESENT AT SITE: 1. Brian Kurtz, Kurtz & Assoc., Inc. 2. Uriel Mellin, Framing Crew The purpose of this inspection was to observe final framing. This is a follow-up to an initial framing inspection which I made on May 14, 2019. Subsequent to the initial inspection I provided Uriel Mellin with a specific list of corrections. General Comments: 1. Uriel Mellin made significant modifications to the window schedule as presented on the architectural construction documents. In this case, Uriel made those revisions early in the construction phase so that the exterior walls of the home were, in general, framed to the appropriate rough opening sizes. 2. Directly west of the main entry to the home is the interior stair well leading to the lower level. Uriel reviewed that revision with our office prior to constructing the roof of the stair well. The non- structural timber trusses in the living room were modified from what is shown on the architectural and structural construction documents. Other than the window openings, these are the only two significant design change to the framing which occurred during construction. Stair Well Roof. The roof was originally specified with mono -pitch trusses spanning 10'-6" north -to -south. Uriel replaced the trusses with 2x 10 rafters spaced at 2'-0" on center. The south end of the rafters frame to a pre -manufactured girder truss on Grid Line `7.' With our office's input, Uriel modified the girder truss, reinforced the truss with a triple 14" LVL beam and added a (3)-2x 6 post at what was originally the mid -span of the girder truss. The new support post is located at Grid intersection `G' — `7', and the post bears on a (2)-11.7/8" LVL main level floor beam (the LVL floor beam forms the east side of the stair opening. This structural modification is structurally acceptable. Roof Framing, Garage and Residence: The roof framing is in accordance with the structural documents. All trusses are installed with hurricane clips as specified. The pre -manufactured garage roof trusses span 35'-0" north to south. The top plate of the east and west gable end walls is braced with diagonal bracing beneath the ridge (truss mid -span) and at approximately 11'-6" from the north and south ends of each wall, respectively. This bracing is structurally acceptable. 2 Main Level and Lower Level Floor Framing: The floor framing at both levels of the residence were complete, and framed in accordance with the structural documents. Hold down Anchors: The shear wall system for resisting wind loads includes six (6) hold-down anchors at the garage and ten (10) hold-down anchors at the residence. All hold-down anchors are installed: they are installed in the appropriate locations as recommended by the manufacturer. Steel Frame: The main level, south wall of the home is a window wall: the lineal feet of shear wall is limited so a structural steel frame was specified at the south wall between Grid Lines `I' and T. The steel framed has been constructed and installed in accordance with the structural documents. The steel column bearing at the top of the south concrete foundation wall was completely installed. South Deck Roof Framing: The south deck roof is framed with 2x 10 rafters, timber beams, and two (2) timber trusses. The framing at the south bay of the porch roof has been modified relative to the construction documents: the timber beam supporting the rafters was moved F-8" north so that the rafter span was shortened from approximately 9'-6" to 7'-10". This change, as framed, is structurally acceptable. The change required the installation of an additional glu-lam beam in the deck floor. The two (2) timber trusses are king post trusses. I inspected and reviewed the truss connections with Uriel. It is my professional opinion that the timber trusses, as constructed, are structurally appropriate and structurally acceptable. Garage Wall Framing: Garage wall framing is structurally acceptable. The garage doors were constructed (including size and location) as specified on the construction documents. Roof trusses for the garage span 33'-0" north -to -south. At the south bearing wall an 8'-0" wide window opening was built. The window opening has been framed with a (3)-7.1/4" LVL header as recommended by our office. Lower Level Wall Framing: All of the window openings at the lower level are on the south wall. Between Grids `C' and 'E' a 10'-0" wide window was installed with a (3) — 9.1/2" LVL header as recommended by our office. At Grid `H' and `13' a (3)-11.7/8" LVL header (as specified) was installed at an 8'-0" wide opening. The header is structurally acceptable and the header support posts are (4)-2x 6 ((2) Jacks + (2) Kings) each end. The original construction documents specified (3)-2x 6 Jacks. After review of the design loads as compared to the as built condition, I determined that the LVL header and its support posts as installed are structurally adequate. Main Level Wall Framing: Horizontal blocking at joints in the wall sheathing was installed as specified throughout the residence. The north face of the interior shear wall which is 4'-6" south of Grid Line `7' was installed as specified. There were a significant number of window and door opening revisions on this level. I reviewed all header sizes and all header support posts. The wall framing as constructed is structurally acceptable. o®°•LfC ®o••• �, •� 3Ar kU ®cS' 18744