Marcus Johnson, CCM

Marcus Johnson entered the construction industry as a field engineer on residential subdivision grading projects in the Dallas-Fort Worth metropolitan area, learning bulk-material estimating from the ground up — literally measuring stockpiles, weighing delivery tickets, and reconciling cubic-yard calculations against actual site conditions. That foundational work gave him a precision-first approach to bulk material estimation that he has applied across 20 years of increasingly complex projects.

Over his career Marcus has managed site-work packages on projects ranging from single-lot residential landscaping to multi-acre commercial site development. He earned his Certified Construction Manager (CCM) credential from the Construction Management Association of America (CMAA, member #2019-1247) after demonstrating competency across cost management, schedule control, and site safety administration. The CCM credential requires direct verification of professional experience and passing a rigorous examination covering all construction management disciplines.

At CalcSummit, Marcus writes and verifies the entire Volume silo — mulch, gravel, sand, topsoil, fill dirt, cubic yards, and asphalt — along with bulk landscape material calculators in the Area and Project silos. His process involves field-testing coverage rate formulas against delivery records from real projects, cross-referencing NALP published coverage standards, and adjusting default compaction factors based on material type and application method. The gravel calculator, for example, uses a 1.4 compaction factor for road base gravel derived from observed field variance between loose cubic yards delivered and compacted cubic yards installed.

Marcus has managed NALP-member landscape installation projects covering more than 2 million square feet of site work across residential, municipal, and commercial applications. He has supervised crews ranging from 8 to 40 workers and managed subcontractor relationships for site grading, utility coordination, and landscape material supply.

He contributes to the NALP Newsletter on bulk material estimation practices and served on a CMAA regional chapter committee reviewing site-work sustainability standards. His field experience is the direct basis for CalcSummit's bulk material calculator defaults — not theoretical values, but numbers verified against real delivery tickets and site measurements.