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HomeMy WebLinkAboutFile Documents.1050 Waters Ave.0003-2024-BREP (5) R /1 ® CRITECIAlikEINGINEERS Cona Engineers LLC Independently Owned and Operated 6400 S Fiddlers Green Cir Suite 250 Greenwood Village,CO 80111 309.339.8045 Phone August 9 ', 2023 Aspen Foundation Repair 732 Buckhorn Dr Unit B Rifle, CO 81650 1050 E Waters Ave Aspen, CO 81611 RE: Structural Inspection To Whom It May Concern; In accordance with your request, we reviewed the structural requirements for the subject address. The property was visited on Thursday, 05/18/2023 by Joe O'Neil, P.E. The scope of work was determined by Aspen Foundation Repair and accepted by the owner prior to the involvement of Criterium-Cona Engineers. DESCRIPTION All descriptions of the structure are based on observation from the west entrance of the structure. The front of the structure is assumed to face west for the purpose of this report. The subject structure is a two-story split-level condominium reportedly built in 1971. The structure is wood-framed construction with lapped siding and board and batten exterior. Structure has a mansard style roof with assumed built-in storm drains. The foundation of the west half of the structure is a concrete stem wall and an assumed footer. The footer could not be directly observed from the exterior. The stem wall and footer were observed from the crawlspace within the structure. The east portion of the structure bears on 10" diameter concrete caissons, two of which were observed from the exterior of the structure on the left side of the structure.No foundation or as-built construction drawings were available for review for this project. No soils LICENSED • PROFESSIONAL ENGINEERS s. ' 6/ : 024 HOME AND BUILDING INSPECTION STRUCTURAL EVALUATION DESIGN • COMMUNITY ASSOCIATION SERVICES ILDING DEPARTMI R /1 ® CRITECIAlikEINGINEERS Cona Engineers LLC Independently Owned and Operated 6400 S Fiddlers Green Cir Suite 250 Greenwood Village,CO 80111 309.339.8045 Phone testing was available for this report. ANALYSIS There is significant cracking in the dry wall as observed from the interior of the structure. Dry wall cracks emanate generally from corners of building openings in the north side of the structure. There is a noticeable downward slope toward the rear of the main floor of the structure as observed from the ground-level unit. The floor slopes downward from the observed concrete caisson approximately 13 feet from the rear of the structure and becomes more distinct at the concrete caisson observed approximately 4 feet from the rear of the structure. Due to lack of practical access, the crawlspace areas inaccessible from the interior of the structure could not be observed. It has been assumed that the structure bears on two rows of concrete caissons extending from the north to the south sides of the crawlspace at the locations where the two 10" concrete caissons were observed from the exterior of the structure. Caissons are assumed to have been constructed on 5'-0" centerlines. The slope in the floor aligns with the locations of the two assumed rows of concrete caissons. The settlement of these caissons and the subsequent movement of the structural components that bear upon them has most likely caused the unevenness within the structure. PROJECT SCOPE Structural modifications included in this project is the planned installation of ten (10) Supportworks Model 288 push piers to provide stability to the assumed concrete caissons within the crawlspace of the structure. Installation of the piers is intended to resist further downward movement of the structure. Existing caissons will be properly fastened to the structure via heavy steel angles and lag bolts prior to installation of the piers. LICENSED • PROFESSIONAL ENGINEERS s ' 6/ : 024 HOME AND BUILDING INSPECTION STRUCTURAL EVALUATION DESIGN • COMMUNITY ASSOCIATION SERVICES ILDING DEPARTMI R /1 ® CRITECIAlikEINGINEERS Cona Engineers LLC Independently Owned and Operated 6400 S Fiddlers Green Cir Suite 250 Greenwood Village,CO 80111 309.339.8045 Phone Piers will be installed with Supportworks FS 288BV Brackets flush to the bottom of the caissons. High-strength, low-shrinkage grout will be applied to the bottom of the caissons as needed to ensure an even bearing area upon the bracket. A lift of the caissons will be attempted on the row of caissons furthest toward the east side of the structure. Lift must be conducted with great care and halted immediately if unexpected resistance is met, or damage to the caissons, substructure, or superstructure is observed. Confirmation of the site conditions must be relayed to the design engineer prior to the installation of any equipment. Please see enclosed drawing#PRJ23026— 1, 2 for design details associated with this project. CONCLUSION AND LIMITATIONS This report is valid only for the address and the project scope listed, by the client listed above. The observations described in this document are valid for the date of the observation and have been made under the conditions noted in the report. Use by any other entity or for any other purpose is prohibited, without the express, written consent of the undersigned engineer. This report is based on published and anecdotal information; variations from the anticipated soil profiles may be encountered; contact the engineer immediately if they are discovered. This report does not cover geological hazards, such as slope stability or landslide. Such investigations require extensive investigative techniques and are well outside the scope of this report. Should such information be desired, contact the engineer for guidance in obtaining it. This report does not express or imply any warranty of the future performance of the structure or drainage condition. This report should not be considered a warranty of condition, and no warranty is implied. The opinions and recommendations presented in this report are based solely on visual observations available for viewing at the time of the LICENSED • PROFESSIONAL ENGINEERS s. - 6/ : 024 HOME AND BUILDING INSPECTION STRUCTURAL EVALUATION DESIGN • COMMUNITY ASSOCIATION SERVICES ILDING DEPARTMI R /1 ® CRITECIAlikEINGINEERS Cona Engineers LLC Independently Owned and Operated 6400 S Fiddlers Green Cir Suite 250 Greenwood Village,CO 80111 309.339.8045 Phone site visit and information, if any,provided by the Client and/or their representative(s). We are not responsible for conditions that were not within the scope of our services at the time of inspection. We did not undertake or perform any destructive or invasive testing. No additional subsurface testing, material testing, calculations,nor monitoring over time of the conditions presented in this report are included in this project, but may be obtained, if desired,under separate agreement. Not included in this site visit was a review of the architectural, mechanical, electrical, plumbing, cosmetic, landscaping, drainage or structural conditions, other than those items specifically discussed, nor a comprehensive review of compliance with applicable building codes. The work covered by this project is not held out as being a complete repair for all known or suspected structural or foundational issues within the building; other work may be justified or needed, but work not included is outside the scope of this project. If it is required at a future date, it will be under a separate contract. This report has been prepared for your benefit and in strict confidence with you as our client. No reproduction or reuse of this report for the benefit of others is permitted without expressed written consent, except as may be required by Colorado real estate regulation. Further, except as required by real estate regulation, we will not release this report to anyone without your consent. LICENSED • PROFESSIONAL ENGINEERS s. ' 6/ : 024 HOME AND BUILDING INSPECTION STRUCTURAL EVALUATION DESIGN • COMMUNITY ASSOCIATION SERVICES ILDING DEPARTMI CRITr. CONL ENGINEERS Cona Engineers LLC Independently Owned and Operated 6400 S Fiddlers Green Cir Suite 250 Greenwood Village,CO 80111 309.339.8045 Phone Regards, Joe O'Neil-PE 0057038 joneil@criterium-cona.com attachment- drawings #PRJ23026 - 1, 2 o��R•o CFI ',��, ' STAMPED ' : i 0 57038 r 08/09/23 SS/ONA1.x— LICENSED PROFESSIONAL • ENGINEERS HOME AND BUILDING INSPECTION 8.4/ 6/ : 024 STRUCTURAL EVALUATION DESIGN • COMMUNITY ASSOCIATION SERVICES BUILDING DEPARTMI