Masonry and Concrete

• Masonry Materials: Brick, Block, Stone, Mortar

  What brick, block, stone and mortar actually are, how each behaves in the wall, and why cement and concrete are not the same thing.

• Mortar Types and Mixing

  Mortar types M, S, N and O: what the letters mean, matching mortar strength to the unit, and mixing to a consistency that bonds.

• Laying Brick to the Line

  Spreading mortar, buttering ends and laying brick to the line with level, plumb, evenly coursed work.

• Block Walls and Reinforcement

  Building CMU walls with vertical reinforcement and grouted cells, and why grout and mortar follow opposite consistency rules.

• Bond Patterns

  Running bond, stack bond and the structural and visual logic behind masonry bond patterns.

• Masonry Flashing and Weeps

  Keeping water out of masonry walls with flashing, weeps and drainage details, and why brick expansion joints differ from block control joints.

Placement

• Concrete Fundamentals: Mix, Water, Strength

  Cement, water and aggregate: how the water-cement ratio controls strength, what slump really measures, and why concrete cures rather than dries.

• Placing Concrete

  Getting concrete from truck to forms: placement, consolidation and screeding without segregation or added water.

• Finishing Flatwork

  Floating, troweling, edging and jointing flatwork, timing every pass off the bleed water.

• Joints and Crack Control

  Control, construction and isolation joints: making concrete crack where you choose instead of where it wants.

• Curing

  Why keeping concrete wet makes it strong: hydration, curing methods, and the 28-day strength convention.

• Cold and Hot Weather Concreting

  Adjusting placement, protection and curing when temperature works against the pour, from frozen subgrade to flash set.

Certification

• ACI Certifications

  The ACI certification ladder for concrete work: field testing, the flatwork levels and the lab credentials, and what each exam actually involves.

• ACI Field Testing Technician Grade I: The Exam

  The seven fresh-concrete tests, the 55-question written exam and the hands-on performance exam behind the certification public work keeps asking for.

• ACI Flatwork Finisher: The Three-Level Ladder

  Associate, Finisher and Advanced Finisher: which level needs the written exam, which needs the slab demo, and how the 1,500 and 4,500 hour experience routes work.

• ACI Lab Certifications: Strength and Aggregate Testing

  The Strength Testing Technician and Aggregate Testing Technician Level 1 certifications: what each exam covers and who they are for.

• The OSHA Silica Standard

  What 29 CFR 1926.1153 requires when you cut, grind or drill concrete, brick, block or stone: the exposure limits, the written plan, and when medical surveillance kicks in.

• Working Table 1: Silica Controls for Saws, Grinders and Drills

  How Table 1 of the silica standard lets a crew skip exposure monitoring by running listed controls, wet methods and dust collection on each listed task.

• The Masonry Apprenticeship

  How the three-to-four-year masonry apprenticeship works, from JATC entry through classroom, shop and on-the-job training to journeyman.

• Becoming a Masonry/Concrete Contractor

  What it takes to license a masonry or concrete contracting business: the experience boards demand, the exams, and where to find your state's rules.

• Masonry and Concrete Contractor Licensing by State

  How states license the trade: California's C-29 and C-8 classifications, Nevada's classification-plus-exams model, and the experience every board wants to see.

• Inside the BAC/IMI Apprenticeship

  How the union path works: local JATC entry, three to four years of classroom, shop and on-the-job training across the trowel trades, with OSHA and silica training built in.