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  • Blog
    • Soil Import and Export: How to Estimate Haul Costs
    • Soil Nail Wall vs. Retaining Wall: Choosing the Right System — Calichi Design Group
    • Specific Plan vs. General Plan — Calichi Design Group
    • Storm Drain Pipe Sizing Using Manning’s Equation
    • Bioretention Isn’t Always the Answer. But It’s Always the…
    • Stormwater Calculations: Rational Method vs. TR-55
    • How to Write a Stormwater Control Plan That Doesn't Come Back…
    • Portland Stormwater Management: BES, PSMM, and Why Your…
    • Stormwater Quality vs. Quantity: What Agencies Actually Require
    • Subgrade Preparation: What Inspectors Look For
    • Subsurface Detention Systems: StormTech, CDS, and Underground Vaults
    • How to Design a Drainage Swale
    • Switchgear Pads and Pull Boxes: The Equipment Nobody Draws…
    • SWPPP Requirements and Risk Level Determination
    • Tentative Map vs. Parcel Map vs. Lot Line Adjustment
    • Testing and Inspection Requirements During Grading
    • Tract Map vs. Parcel Map: Which Subdivision Map Do You Need? — Calichi Design Group
    • Transformer Pad Clearances: The 10 Feet Nobody Planned For
    • Trench Drain Selection and Sizing — Calichi Design Group
    • Truncated Domes: Placement Rules and Common Mistakes
    • Underground Service Alert (USA) and Potholing Requirements
    • Utility Potholing Before Construction — Calichi Design Group
    • Utility Trench Backfill and Compaction Requirements
    • V-Ditch vs. Swale: When to Use Each — Calichi Design Group
    • Value Engineering on Civil Projects: Where to Cut and Where Not To
    • Van Accessible Parking Stalls: Dimensions, Access Aisles, and…
    • Variance vs. Conditional Use Permit — Calichi Design Group
    • Half an Inch Across 200,000 Square Feet: Warehouse Grading Is…
    • How Do You Size a Water Main for Fire Flow?
    • How to Size a Water Meter for Commercial Buildings
    • Water Main Pressure Testing Requirements
    • What Is a Will-Serve Letter and Why Your Project Can't Move…
    • What Is C.3 Stormwater? A Plain-English Explanation for…
    • Accessible Parking: Schools vs. Commercial vs. Residential
    • Accessible Route Design for Campuses and Large Sites
    • How Flat Is Too Flat? The ADA-vs-Drainage Problem That Haunts…
    • How to Calculate ADA Parking Requirements
    • ADA Path of Travel: Maximum Slopes, Landing Sizes, and…
    • Every Sidewalk, Every Ramp, Every Cross-Slope: ADA on a…
    • 2% Cross-Slope: The Three Characters That Make Affordable…
    • Affordable Housing Site Planning in California: TCAC, C.3,…
    • Fitting a Bioretention Basin on a Half-Acre Lot Is Like…
    • Appendix B vs. Appendix C Fire Flow: When Each Applies
    • As-Built Drawings: What They Need to Show and Who Prepares Them
    • When Is a Backflow Preventer Required?
    • Why Bay Area K-12 Projects Need Stormwater-First Site Planning
    • Bay Area Mixed-Use Projects: The Site Planning Challenges…
    • Bay Area Multifamily Site Planning: C.3 Compliance and Beyond
    • Bike Lockers vs. Bike Racks: What Your City Actually Requires
    • How to Set a Building Pad Elevation
    • Building Permit vs. Grading Permit: What Is the Difference? — Calichi Design Group
    • CALGreen EV Charging: EV Ready, EV Capable, and EVSE
    • CBC 11B on Schools: The Plan Check Comments That Follow You Home
    • What Is a CEQA Exemption and When Does It Apply?
    • Compaction Testing Requirements and Frequency — Calichi Design Group
    • Composite Utility Plans: The Drawing That Saves Your Project…
    • Conditions of Approval: How to Read Them and What They Cost
    • Construction Staking: What the Surveyor Needs from Your Plans
    • Cost Estimating for Site Civil Work: Rules of Thumb
    • Curb and Gutter Types: Rolled, Barrier, and Mountable
    • Cut and Fill Earthwork Calculations Explained
    • Density Bonus: When the City Hands You 40 Extra Units and…
    • Detention vs. Retention: Which Your Project Needs
    • Does My Project Trigger C.3? The Square Footage Thresholds…
    • Does My Project Trigger C.3? It’s Not One Threshold Anymore
    • Why Dry Utility Coordination Takes Longer Than You Think (And…
    • Dry Utility Design for Multifamily Projects: Trenches,…
    • How Long Does DSA Really Take? Grab a Chair.
    • Electrical Vaults: Sizing, Placement, and Why They Always End…
    • Encroachment Permits: What They Cover and Who Needs One
    • Environmental Impact Report Timeline and Process — Calichi Design Group
    • Erosion and Sediment Control BMPs During Construction
    • Fiber Optic Conduit Requirements for New Development
    • Fire Access Road Requirements: Width, Turning Radius, and the…
    • Fire Department Turnarounds: Hammerhead vs. Cul-de-Sac and…
    • Fire Flow Calculations: What the Fire Code Actually Requires
    • Fire Hydrant Spacing Requirements by Building Type
    • Fire Sprinkler Demand vs. Fire Flow: Separate Calculations
    • Gas Main Extensions: Who Pays and How Long It Takes
    • Geogrid Soil Reinforcement: When and How to Use It — Calichi Design Group
    • Geotechnical Report Basics: What Civil Engineers Need from It
    • Grading Permit Thresholds by Jurisdiction
    • How to Size a Grease Interceptor
    • Green Infrastructure vs. Gray Infrastructure for Stormwater
    • HECO vs. PG&E: Comparing Hawaii and California Utility Processes
    • How to Calculate ADA Parking Requirements (With the Table…
    • How to Calculate Bike Parking Requirements (Short-Term vs….
    • How to Calculate EV Parking Requirements in California…
    • How to Read a Grading Plan: Contours, Spot Elevations, and…
    • How to Size a Bioretention Basin: The 4% Rule and When It…
    • Hydromodification: The Word Your Client Can't Pronounce but…
    • Improvement Plan Requirements for New Development — Calichi Design Group
    • Industrial Dry Utility Design: When Your Power Demand Is the…
    • Your Fire Marshal Just Red-Lined Your Site Plan. Here's Why…
    • 40 Acres of Concrete and Nowhere for the Rain to Go
    • Your Entire Site Is Impervious. Your Stormwater Engineer Just…
    • Joint Trench Design: What Every Developer Needs to Know…
    • Joint Trench and Dry Utility Design in Portland: PGE, Pacific…
    • K-12 School Site Planning in Honolulu: Drainage, Grading, and…
    • K-12 Site Planning in the Pacific Northwest: Rain, Terrain,…
    • Knox Box and FDC Placement Requirements
    • LID (Low Impact Development) Principles Explained
    • Can a Playground Be a Stormwater Basin? Turns Out, Your Kids…
    • Lot Merger vs. Lot Line Adjustment — Calichi Design Group
    • Mass Timber Buildings: Civil Engineering Considerations
    • Maximum Driveway Slopes in California: What the Code Says and…
    • Mixed-Use Site Planning in Honolulu: Balancing Density with…
    • Planning a Mixed-Use Project in Hood River? Start with the Site
    • MS4 Permit Compliance for Small Municipalities
    • Multifamily Site Planning in the Pacific Northwest: What…
    • Multifamily Site Planning in Walnut Creek: Parking, Grading,…
    • Oakland Mixed-Use Site Planning: Navigating Entitlements and…
    • What Oakland Developers Need to Know About Multifamily Site Plans
    • Parking Lot Grading and Drainage Design
    • When Does an Existing Building Trigger Path of Travel Upgrades?
    • Pavement Section Design: Asphalt vs. Concrete for Site Work
    • Peer Review: What to Look for When Reviewing Another Engineer’s Plans
    • Pervious Pavement: Types, Maintenance, and Limitations
    • The PG&E Green Book: A Civil Engineer's Translation Guide
    • The PG&E Green Book: A Civil Engineer’s Translation Guide
    • PG&E's New Joint Trench Process: Submit Your Building Permit…
    • Rule 16 vs. Rule 20 vs. Rule 21: PG&E Service Extensions Explained
    • How Long Does a PG&E Service Extension Actually Take?
    • Portland Multifamily Site Planning: Stormwater, Density, and…
    • Who Maintains Private vs. Public Sewers?
    • Provision C.3: The Three Pages of Permit Language That…
    • Public Improvement Bond Requirements for Developers — Calichi Design Group
    • Rain Gardens vs. Bioretention: Is There a Difference?
    • How to Respond to Plan Check Comments Efficiently
    • Retaining Wall Types and When Each Is Appropriate
    • Rough Grading Certification Process — Calichi Design Group
    • How to Navigate Sacramento's Multifamily Site Planning Process
    • Sacramento Retail Site Planning: Utilities, Access, and City…
    • Sanitary Sewer Design: Minimum Slopes and Pipe Sizing
    • SB 35 Streamlining: What It Actually Means for Your Civil…
    • Nobody Budgeted the Civil Scope: A School Modernization…
    • How to Evaluate Existing Sewer System Capacity
    • When Does a Sewer Lateral Need to Be Replaced?
    • Sidewalk Design: Width, Scoring, Ramps, and Common Mistakes
    • Silva Cells: When Your Stormwater Solution Grows a 50-Foot Tree — Calichi Design Group
    • Site Grading: Reading Contours and Setting Pad Elevations
    • What Are C.3 Stormwater Requirements? A Bay Area Project Guide
    • Small-Town School Site Planning: Lessons from Hood River, Oregon
    • What Is a Tentative Map? A California Subdivision Guide
    • Site Planning for Oakland Schools: DSA, Playgrounds, and ADA…
    • Building Better Schools in Portland: A Civil Engineer's Guide…
    • What Sacramento School Districts Need from a Civil Site Plan
    • What Are C.3 Stormwater Requirements? A Bay Area Project Guide
    • How Does Site Planning for K-12 Schools Work in Walnut Creek?
    • What Is a Tentative Map? A California Subdivision Guide
    • Site Planning for Honolulu Multifamily Projects: Slopes,…
    • Multifamily Housing in Hood River: Site Planning for a…
    • Mixed-Use Site Planning Across the Pacific Northwest:…
    • How Portland's Green Infrastructure Rules Shape Mixed-Use…
    • Retail and Mixed-Use Site Planning in Walnut Creek: What the…
    • Slope Stability Considerations for Hillside Development
    • Stormwater Requirements for Small Projects: Yes, Your 5,000…
  • SLBE-Certified Civil Engineer | CaliChi Design Group
    • SLBE Certified Civil Engineering — Oakland & Alameda County
    • Calichi SLBE Bid Package — One-Page Reference for Prime Contractors
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  • Utility Research and Coordination, California
  • Library
  • Bay Area Civil Engineering by a California PE — Calichi Design Group
  • Site Development Engineering for Subdivisions, Commercial & Multifamily — Calichi
  • C.3 Stormwater Compliance for Bay Area Projects — Calichi Design Group
  • Dry Utility Consulting

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