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JAM crew and concrete pump executing a commercial slab pour in Georgia

Family-owned & operated | Commercial subcontractor | Georgia | Since 2009

Commercial Concrete Subcontractor Built for GC Execution

Most subs send a number. JAM sends a plan.

JAM reviews scope, quantities, interfaces, access, sequencing, and field conditions so estimating receives a bid it can level and operations receives a plan it can execute.

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Five core commercial divisions

Concrete at the core. Clear scope. Accountable execution.

Commercial Concrete work by JAM

Core division

Commercial Concrete Division

JAM develops concrete scopes around the documents, quantities, interfaces, access, sequence, and field conditions that determine whether a package performs after award.

Review scope
Pre-Engineered Metal Buildings work by JAM

Division 02

Metal Buildings Division

JAM plans pre-engineered metal building erection around the approved building package, foundation interfaces, equipment access, sequence, alignment, enclosure, and turnover requirements.

Review scope
Landscape & Hardscape work by JAM

Division 03

Landscape & Hardscape Division

JAM scopes landscape and hardscape work around civil documents, finished grades, adjacent concrete, site access, protection, and the turnover sequence.

Review scope
Commercial Roofing work by JAM

Division 04

Commercial Roofing & TPO Division

JAM reviews assemblies, details, penetrations, edge conditions, access, and sequencing before pricing commercial roofing and TPO work.

Review scope
Selective Demolition work by JAM

Division 05

Selective Demolition Division

JAM defines removal limits, access, protection, hauling, disposal, and turnover so follow-on trades receive a clean, coordinated work area.

Review scope

Built for preconstruction and operations

A bid you can level. A plan the field can execute.

JAM treats scope clarity as part of the work—not paperwork added after the number.

Defined scope ownership

Inclusions, exclusions, assumptions, and interfaces are stated so teams know what JAM owns.

Quantity-backed proposals

Pricing is developed around the documents and measurable scope, not an unexplained lump-sum number.

Preconstruction connected to field operations

Scope decisions move through award handoff and pre-mobilization planning.

Direct access to decision-makers

Estimators, PMs, and superintendents can reach people accountable for the answer.

Cleaner buyout. Fewer scope surprises.

Questions are surfaced before award so gaps do not become field problems.

GC workflow

From invitation to closeout, the scope stays connected.

  1. 01

    Plans + addenda review

  2. 02

    Scope boundaries + interfaces

  3. 03

    Quantity-backed proposal

  4. 04

    Award handoff

  5. 05

    Pre-mob planning

  6. 06

    Field execution

  7. 07

    Closeout

Cleaner bid levelingFewer scope gapsSmoother handoff to fieldFaster answersClearer accountability

Actual JAM field work

Planning that shows up in the work.

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JAM crew placing concrete in commercial wall forms
Commercial wall pour
JAM formwork for cast-in-place concrete walls
Structural concrete formwork
JAM crew working inside a water treatment clarifier
Municipal field execution
JAM concrete formwork crew preparing a wall placement

Family-owned & operated since 2009

The people making the commitment stay accountable to it.

Alfredo Medrano Jr. leads business development and preconstruction, Alex Medrano leads field operations, and founder Alfredo Medrano Sr. remains connected to relationships, leadership, and accountability.

Bid strategy

Field execution

Direct access

Meet JAM leadership

Most subs send a number. JAM sends a plan.

Send the current bid package to Alfredo Medrano Jr., VP of Business Development & Preconstruction.

Send the PlansCall 678.923.1105
Send Plans