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I need a Washington-licensed civil engineer to design a ~170' l.f., two-tier, 4' height (each tier) retaining wall for a permit package. The wall’s job is structural support along a sloped yard, and I want it built using Redi-Rock. Because groundwater moves through the area, especially from November to March, the design must include a connection to the integrated underdrain stormwater system —think perforated pipe, weep holes, and properly detailed filter fabric—to keep hydrostatic pressure down. You’ll review my site measurements and photos, verify loading assumptions, and produce sealed calculations and drawings that meet the current Washington State and local county codes. Since the retaining wall be over 8' in height, permitting will require at least a cursory global stability analysis. I have soil maps, reports, and a geotechnical survey to speed things up. Deliverables • Stamped structural calculations, including perfunctory global stability analysis (PDF) • Plan, section, and elevation sheets sized for county submittal (PDF + DWG + SVG) • Construction notes that spell out brick specification, reinforcement schedule, footing dimensions, geogrid lengths, and the complete drainage layout • Your professional seal and signature for Washington State Acceptance criteria The building department must accept the plans without requesting major structural revisions. Files should open cleanly in AutoCAD, Adove Illustrator, and .pdf and plot to scale at 24"×36". I respond quickly to questions and can supply any additional site information you need, so let’s move this forward as soon as you’re ready.
Project ID: 40668638
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I am pleased to submit my proposal to provide professional design services for a Washington-stamped Redi-Rock retaining wall project. I will develop a structurally sound and practical retaining wall design based on the available site information, wall geometry, soil conditions, loading requirements, and applicable Washington State codes and standards. The design will be prepared with careful attention to stability, drainage, constructability, and long-term performance. My scope can include retaining wall calculations, global and internal stability checks, bearing and sliding analysis, reinforcement requirements where applicable, drainage considerations, and detailed construction drawings. The final engineering package will be prepared for review and stamping by a qualified Washington-licensed professional engineer, as required for permit and construction purposes. I will coordinate the design details to ensure the proposed Redi-Rock system is properly integrated with the site and project requirements.
$250 USD in 7 days
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23 freelancers are bidding on average $444 USD for this job

Not only am I well-acquainted with Washington state and local codes, but I also bring a unique value to your project, blending my skills in civil engineering and CAD design. This duality enables me to develop creative yet precise solutions while fully abiding by the set regulations. Being fluent in AutoCAD, SolidWorks, Revit, SketchUp, Tekla, and many other relevant software aligns seamlessly with the deliverables you're looking for. You need evaluation and creation of sealed calculations which can be delivered in PDF + DWG + SVG format - a task I am fluent in. Moreover, I recognize the significance of accurate plans for permit approval. Not only will I create plans that satisfy the strictest of county submittal standards and open cleanly in multiple software interfaces but with my experience incorporating geotechnical surveys into construction plans, your proposal is bound to be well received.
$266 USD in 1 day
6.8
6.8

As a seasoned professional in civil engineering and having been licensed in Washington, I am extremely adept at overseeing projects that demand a keen understanding of state and country codes. With over a decade of experience, I have successfully executed various retaining wall designs as specified in your project description, including comprehensive detailing and calculations associated with structural support under different groundwater conditions. In addition, my knowledge extends to transforming technical data into meaningful 2D/3D models through the use of advanced software such as AutoCAD and SketchUp. This skill will ensure that the intricate components of your Redi-Rock retaining wall design are accurately represented in the drawings and can be viewed from all necessary angles for a successful permitting process.
$255 USD in 1 day
6.1
6.1

Hey, You are looking for Washington Stamped Redi-Rock Retaining Wall Design. "Lets Gets Started, I know you have several tempting proposals here, but I guarantee you to be impressed by my work. I have various skills in design, Illustration, Photoshop, Graphic Design, Logo Design and Illustrator. If you give me this chance you will be impressed, because I guarantee that I will meet your expectations. I invite you to get a look at my portfolio You Can see it from here : https://www.freelancer.com/u/sahildogra222 If you have any questions or queries, do not hesitate to contact me. I hope to start working with you. With regards! SAHIL
$250 USD in 1 day
5.9
5.9

Hi there, I can assist with the structural engineering and permit package for your approximately 170 LF, two-tier Redi-Rock retaining wall. I can review your site measurements, photos, geotechnical information, and loading assumptions, then develop the required structural and stability calculations and detailed drawings. * [ ] Redi-Rock wall structural design * [ ] Global stability analysis for the 8+ ft overall retained height * [ ] Drainage and hydrostatic pressure design * [ ] Perforated underdrain, weep holes, and filter fabric details * [ ] Geogrid, reinforcement, footing, and connection details * [ ] Plan, section, elevation, and construction notes * [ ] Washington code compliance and permit coordination * [ ] Sealed calculations and drawings by a Washington-licensed PE I can provide the final PDF, DWG, and SVG files formatted for 24"×36" county submittal. Please send the geotechnical report, site measurements, photos, and any available survey so I can review the scope and confirm the required design criteria and turnaround. Best Regards, Mohand
$500 USD in 3 days
5.6
5.6

As an experienced Architect, Civil Engineer, and Structural Engineer with a sharp focus on residential design and construction, I have developed a keen understanding of the intricate aspects involved in constructing sound retaining walls. With specialization in using Redi-Rock and deep knowledge of Washington State and local county codes, ensuring compliance will be second nature to me. Moreover, my proficiency in AutoCAD, Adobe Illustrator and being comfortable with different file formats will make sure that all the required deliverables open cleanly and plot to scale at 24"x36". My goal is to save you precious time by minimizing site visits; hence, your provided soil maps, reports, and geotechnical survey data are highly valuable for me for this project. With my combined skills and background as a responsive Freelancer who values seamless communication, I believe I'll be the perfect fit for your project.
$500 USD in 7 days
5.7
5.7

Hello, I have experience supporting civil and structural retaining wall permit packages, including tiered wall layouts, Redi-Rock systems, underdrain design, hydrostatic pressure control, and global stability review coordination. I am a good fit because your 170 LF two-tier wall needs clear sealed drawings, drainage detailing, and code-compliant calculations for Washington county approval. I will review your site measurements, photos, soil reports, geotechnical survey, and Redi-Rock requirements, then prepare the plan, sections, elevations, construction notes, drainage layout, geogrid/footing details, and calculation package. I do not personally hold Washington PE licensure, but I can provide stamped and sealed results through an actively licensed Washington civil engineer I work with. Thanks for reading my proposal. Edwin
$500 USD in 7 days
5.3
5.3

Hello, I will work on the design and calculation will provide you detailed drawing according to the requirements and building code. Also will provide engineering stamp by licensed PE What I can offer to you... 1. Structural Analysis and Design Calculation Report - Loadings and structural components i.e. Foundations, Retaining Walls, Columns, Beams, Floor Joists, rafters, Load-bearing walls, padstones, steel connections, and many more... 2. Structural Drawings - Foundation Plan - Floor Framing Plans - Roof Framing Plan - Structural Section Views - Columns and Beam Schedules - Steel Connection Details - Structural Construction Details, Notes, and Specifications Feel free to contact me, I am here to help.
$250 USD in 1 day
3.8
3.8

As a seasoned civil engineer with a strong background in structural engineering and construction management, I believe I'm the ideal candidate to design your Washington Stamped Redi-Rock Retaining Wall. I have an intimate knowledge of the regional building codes, particularly those enforced in Washington State and local county. Moreover, I have a proven track record of designing water drainage systems for projects similar to yours, ensuring that hydrostatic pressure is effectively managed even during the rainy months. My vast experience includes conducting global stability analysis for structures over 8' in height - something your retaining wall project will eventually require for permitting. Additionally, having been trained and practiced in using software such as AutoCAD with the ability to provide high-quality drawings on-time and to scale, I'm confident my deliverables will meet your acceptance criteria without needing significant revisions from your local building department. Best Regards Sumit Kumar
$250 USD in 1 day
4.7
4.7

Hello, The key challenge is designing a two-tier retaining wall over 8 ft total height where groundwater and global stability become critical design considerations. The Redi-Rock system, geogrid, drainage, soil conditions, surcharge loads, and tier interaction all need to be coordinated rather than treated as separate details. I’d review the geotechnical information and site measurements first, establish the governing lateral and global stability cases, then develop the wall sections, drainage, reinforcement, and construction details for the permit package. The final calculations and drawings would be reviewed and sealed by the appropriately licensed Washington engineer. Do you already have the geotechnical report, site survey, and county jurisdiction requirements available?
$250 USD in 1 day
3.0
3.0

Hi there, This project requires a Washington-licensed civil or structural engineer who can take responsibility for the sealed calculations, global stability analysis, drainage design, and final permit documents. I can support the technical drafting and coordination using your survey, geotechnical information, site photos, and Redi-Rock requirements, including plan, section, elevation, reinforcement, geogrid, footing, and underdrain details. I would not misrepresent Washington licensure; the final package must be reviewed, signed, and sealed by the responsible engineer. I have two quick questions: Which county and jurisdiction will review the permit package? Do your geotechnical documents provide allowable bearing pressure, friction angle, groundwater conditions, and seismic parameters? The 24"×36" PDF and DWG sheets can be prepared for scaled plotting, with SVG exports coordinated for clean Illustrator use. Let’s discuss your project now! Best regards
$285 USD in 3 days
1.6
1.6

Hi, I'm a licensed engineer in Washington with extensive experience in retaining wall design, Redi-Rock systems, drainage integration, and global stability analysis. I will design a two-tier Redi-Rock retaining wall (~170 l.f., 4' each tier) for your sloped yard, including underdrain connection, perforated pipe, weep holes, filter fabric, and full structural calculations. Deliverables include stamped calculations, plan/section/elevation sheets (PDF/DWG/SVG), construction notes, and my WA seal. I'm ready to review your site measurements and geotechnical data. Best regards, Justin
$500 USD in 2 days
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Hello, With our extensive experience in construction management, architectural design and civil engineering, we are the perfect fit to help you with your Redi-Rock retaining wall design. Our firm, led by a retired California Licensed General Contractor, encompasses a broad range of skills that is crucial in delivering your project effectively, from site measurements and calculations to building layouts and stormwater drainage systems. One of our strengths lies in translating real-world insights into our drawings and designs, taking into consideration various factors such as groundwater and hydrostatic pressure. This approach complements your requirement for a comprehensive underdrain stormwater system. Drawing from the ample information provided about soil maps, reports, and geotechnical survey, we can expedite the process without compromising on quality. Our meticulousness, organization, and focus on clear communication ensure that your deliverables meet Washington State and local county codes while aligning with current engineering standards. We aim for a smooth permitting process where acceptance of plans without major revisions is key, something that aligns perfectly with your acceptance criteria. Choose us for thorough excellence delivered with efficiency. Thanks!
$555 USD in 4 days
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Hello, As a seasoned civil engineer with experience working on diverse projects requiring AutoCAD and Building Design skills, I am more than capable of designing your Washington Stamped Redi-Rock Retaining Wall to meet your unique specifications. I have an impressive grasp of local regulations and codes, which will enable me to produce the required permit package promptly, ensuring acceptance at the first review without hiccups or significant structural revisions. Moreover, with nearly two decades in the industry, my understanding of groundwater and hydrostatic pressures will prove valuable for your project's success. From November to March, when water is usually an issue in the area, I will take care to include integral features like perforated pipes, weep holes, and detailed filter fabric to prevent any hydrostatic pressure build-up. My expertise also entails a perfunctory global stability analysis that aligns with the needs of retaining walls exceeding 8 feet. I understand that one of your key Acceptance Criteria is for the final files to open seamlessly across various platforms. Rest assured, I am well-versed in producing PDFs that plot impeccably to scale at 24" x 36", and which can cleanly open in AutoCAD, Adobe Illustrator, and other software you rely on. Choose me for meticulous calculations, sturdy construction blueprints, and a turnaround time that doesn't compromise on quality; together we can build a safe and structura Thanks!
$555 USD in 1 day
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Hello, I reviewed your brief, and the core challenge is designing a two tier Redi Rock retaining system that remains stable under soil and groundwater conditions while satisfying Washington State and local permitting requirements. I would evaluate the site information, soil conditions, surcharge and hydrostatic loading, global stability, wall geometry, reinforcement, footing requirements, and integrated drainage so the calculations and drawings accurately reflect the actual site conditions. I have worked on retaining wall design, structural calculations, geotechnical considerations, drainage detailing, and permit ready engineering documentation and can share relevant examples and professional credentials once we connect in chat.
$255 USD in 1 day
2.6
2.6

Hi, The critical risk is groundwater during November through March undermining the Redi-Rock two-tier retaining wall and the underdrain connection being undersized or improperly detailed. I will verify loading assumptions, soil parameters from your geotechnical survey, and provide a cursory global stability analysis specific to the 4' tier heights and ~170 l.f. run. I have designed and stamped multiple segmental retaining walls and gravity/block systems for county permit submittals in the Pacific Northwest, including projects requiring integrated underdrain connections and seasonal groundwater management. My background includes producing sealed structural calculations, plan/section/elevation sheets, and AutoCAD deliverables that plot correctly at 24"×36" for local building departments in Washington State. I will start by reviewing your soil maps, reports, geotechnical survey, site measurements, and photos, then run limit equilibrium global stability checks plus internal/external stability and surcharge/load verifications for Redi-Rock per manufacturer guidance and Washington State code. Deliverables will include stamped structural calculations (PDF), plan/section/elevation sheets (PDF + DWG + SVG), construction notes with brick specification, reinforcement schedule, footing dimensions, geogrid lengths, drainage layout, and my Washington State seal and signature. - Do you have a preferred county submittal checklist or any local amendments I should follow? - Are there as-built utility or grading plans and the exact location of the integrated underdrain tie-in available for review? Feel free to reach out if you want to talk through next steps. Christopher
$320 USD in 4 days
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We can definitely handle the structural design and provide the Washington PE stamp for your two-tier Redi-Rock retaining wall. We are a team of licensed structural and MEP engineers, and we carry an active Washington State PE license to get your permit package sealed and approved. We engineer segmented retaining walls often, and we know exactly how to handle the seasonal groundwater issues. We will make sure the drainage details—like the underdrain connection, weep holes, and filter fabric—are fully integrated into the plans to keep that hydrostatic pressure down. We will also run the required global stability analysis for the 8-foot combined height and detail all the footing dimensions and geogrid lengths in the construction notes. We draft in AutoCAD daily, so providing the 24x36 PDFs, DWGs, and SVGs for your county submittal is no problem at all. If you can send over the soil maps, geotech report, and your site measurements, we can review the exact soil parameters and get started on this right away. Let me know when you are ready to share the files!
$500 USD in 7 days
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Hi, there Your two-tier Redi-Rock wall needs an integrated structural and geotechnical approach, particularly because of the seasonal groundwater, combined wall height, and global stability requirements. As a licensed Professional Engineer, I can design the approximately 170 LF retaining system and evaluate bearing, sliding, overturning, geogrid reinforcement, surcharge, drainage, and overall slope stability. I’ll coordinate the design with your geotechnical information and detail the perforated underdrain, filter fabric, drainage aggregate, weep provisions, and connection to the existing stormwater system. Deliverables can include signed/sealed calculations and 24"×36" permit drawings with plans, elevations, sections, Redi-Rock specifications, geogrid lengths, and construction details. Please send the geotechnical reports, site measurements, photos, and exact Washington jurisdiction, and I can review the information promptly and confirm the scope and turnaround. Thank you.
$250 USD in 3 days
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