Mack Engineering

RV Park Feasibility & Designs

Quick answer: An RV park can work on a site only if four things line up: the wastewater can be treated legally and affordably, water and power can be delivered at the right capacity, the layout fits the RVs your market actually brings, and the improvements you build today do not reduce what the land…

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Revit and BIM for Civil Site Design in Georgia: What Developers Get Out of a 3D Site Model

BIM on a civil site project means the grading, utilities, structures, and building footprint exist as one coordinated 3D model instead of a stack of independent 2D sheets. For a developer in Georgia, the three measurable returns are earthwork quantities computed from surfaces rather than estimated (which changes your cut-and-fill bid), utility and structure clashes…

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Owner’s-Side Construction Management for Georgia Commercial Projects: What It Costs and What It Catches

Owner’s-side construction management means the owner hires a representative who works only for the owner, reviewing pay applications, verifying installed quantities, enforcing the approved plans, and managing changes, separate from the general contractor who is building the work. On Georgia commercial projects, owner’s CM fees typically run about 2 to 5 percent of construction cost,…

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Structural vs. Civil Engineer in Georgia: Which One You Actually Need, and Who Can Seal It

A civil engineer designs everything outside the building envelope: grading, drainage and detention, erosion control, utilities, septic, roads, and the permit plan sets a jurisdiction reviews. A structural engineer designs the load-carrying parts of the building itself: footings, foundations, beams, headers, framing, and retaining wall structures. In Georgia both are licensed professional engineers, but “professional…

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Septic System Design in Georgia: Level 3 Soil Reports, Site Limits, and What Actually Kills a Lot

In Georgia, a septic system is permitted by the county board of health under the state Manual for On-Site Sewage Management Systems, and the controlling document is almost always the soil report. Most counties require an original, stamped Level 3 or Level 4 soil report prepared by a Georgia certified soil classifier before a septic…

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Detention Pond Design in Metro Atlanta: GSMM Sizing Criteria, Costs, and Approval Timelines

In Metro Atlanta, a detention pond is sized against four separate criteria in the Georgia Stormwater Management Manual, not one. You must treat the water quality volume from the first 1.2 inches of rainfall, provide 24-hour extended detention of the 1-year 24-hour storm for channel protection, hold the post-development 25-year 24-hour peak discharge to the…

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Lake Lanier Dredging Permits, Site Plans, and Erosion Control: A Civil Engineer’s Guide for Hall, Forsyth, Dawson, Gwinnett, and Lumpkin Counties

Serving property owners, marinas, HOAs, and developers on Lake Sidney Lanier. Summary Dredging on Lake Sidney Lanier is regulated by the U.S. Army Corps of Engineers (USACE) Mobile District under Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act, with parallel review by Georgia EPD and by the…

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Commercial Land Development Engineer in Atlanta: 12 Questions Developers Should Ask Before Hiring in 2026

Quick answer: Before hiring a commercial land development engineer in Atlanta, developers should verify Georgia PE licensure, confirm a Certificate of Authorization for the firm, ask for jurisdiction-specific project references, review sample plan sets, clarify fixed-fee vs. hourly billing, and ask directly who will stamp the drawings. The wrong hire on a commercial site can cost…

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Industrial Site Development in Metro Atlanta: Zoning, Stormwater & Permit Requirements for Warehouse and Flex Projects

Quick answer: Industrial site development in Metro Atlanta requires M-1 or M-2 zoning (or a rezoning application), a full stormwater management design meeting current Georgia Stormwater Management Manual (GSMM) requirements, a Georgia EPD NPDES Construction General Permit for any disturbance over one acre, and county-specific industrial performance standards covering truck circulation, buffers, and outdoor storage. Typical…

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2026 Metro Atlanta Land Disturbance Permit Cost & Timeline Guide (Every North Metro County)

Quick answer: In 2026, a land disturbance permit (LDP) in Metro Atlanta typically costs $1,500 to $7,500 in county fees plus $7,500 to $75,000 in engineering fees, and takes 45 to 120 days from submittal to permit issuance. Costs and timelines vary significantly by county, project size, and stormwater complexity. Georgia SB 447 now imposes a…

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