Geotechnical Report - Addendum 1_HWY-221.pdf
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- Attached to
- Landslide Repairs in Ciales, Puerto Rico
- Solicitation number
- 693C73-24-B-000008
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This document is an Addendum to a Geotechnical Report for the Landslide and Road Damage Evaluation and Reconstruction Project ER-HWY-221 in Ciales, Puerto Rico. The addendum certifies that the geotechnical analyses performed, including internal and external stability analyses for slopes, were conducted following the Puerto Rico Transportation and Highway Authority (PRTHA) Design guidelines. It confirms that the recommendations in the geotechnical report will provide adequate safety factors for the global stability of the reconstruction alternatives against static and pseudo-static conditions. Additional slope stability analyses may be performed to assure the global stability of the finally selected alternative.
The related federal contract opportunity is for the Landslide Repairs in Ciales, Puerto Rico, Project PR ER DOT PRMNT RPR(18), Solicitation Number 693C73-24-B-000008. This is a sealed bid solicitation for certified Small Business Concerns only, with an estimated project value between $5,000,000 and $10,000,000. The project scope includes utility relocation, embankment reconstruction, landslide stabilizations, drainage systems, retaining walls, pavement work, guardrail replacement, and other related work. Bid documents are expected to be issued on or about April 1, 2024, with the bid due date and location to be specified in the solicitation.
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P.O. Box 260370, San Juan, PR 00926-2622 ● 787.281.0686 ● www.despiau.net
April 10, 2019
Klein Engineering, PSC.
PO Box 12009 San Juan, Puerto Rico 00922-2009 Ph: 787.993.2071 E-mail: franciscoklein@klein-engneering.com
Attn.: Mr. Francisco Klein, PE, President
Subject: Addendum No. 1 – Proposed Geotechnical Engineering and Subsurface Exploratory Services for the Landslide and Road Damage Evaluation and Reconstruction Project ER-HWY-221 at State Road PR-146, KM 19.3 on Cordillera Ward of the Municipality of Ciales, Puerto Rico.
Reference No. DA/18O3741
Gentlemen:
Following the necessary approval of our revised proposal by the PRTHA’s Soils Engineering office, Despiau
Associates was engaged for the Geotechnical Engineering & Subsurface Exploratory Services on the referenced project. The scope of work and associated terms and conditions of our engagement were detailed in said revised proposal.
However, in order to verify the adequacy of the presented reconstruction alternatives, internal and external stability analyses for slopes within the project’s limits were performed. The degree of stability of a slope is expressed as the factor of safety, which is the ratio of the forces resisting failure to the driving forces causing instability.
The undersigned hereby certifies that the analyses contained in our geotechnical report were performed following the Puerto Rico Transportation and Highway Authority (PRTHA) Design guidelines, including internal and external stability. Moreover, the undersigned confirms that, provided the recommendations contained in the geotechnical report of reference are strictly followed and considered in the design, adequate safety factors for global stability against Static and Pseudo-Static conditions will be obtained. Furthermore, additional slope stability analyses may be performed to assure the global stability of the finally selected alternative.
Should you have any question regarding these matters, please do not hesitate to contact the undersigned.
Respectfully submitted, DESPIAU ASSOCIATES
Jose R. Despiau, P.E.
Geotechnical Engineer http://www.despiau.net/ mailto:franciscoklein@klein-engneering.com
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