Official Course Description: MCCCD Approval: 04/23/96
ABA231 19964-20046	LEC	1 Credit(s)	1 Period(s)
Introduction to Reinforcing Concrete
Use of reinforced concrete and reinforcing steel. Reinforced concrete in specific settings. Bar supports, bar lists, fabrication options, cutting, bending, tying, splicing and placing reinforcing bars (rebars). Prerequisites: (Indentured status with the Arizona Builders Alliance and ABC135) or permission of the apprenticeship coordinator.

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MCCCD Official Course Competencies:
ABA231   19964-20046	Introduction to Reinforcing Concrete

1.	List and define trade terms associated with steel reinforcing processes. (I)
2.	Describe the applications of reinforcing bars, the uses of reinforced structural concrete and the basic processes involved in placing reinforcing bars. (II)
3.	List and describe the tools and materials required for working with reinforcing steel. (III)
4.	Identify the types of bar supports and describe how each is used to support, hold or space steel reinforcing bars. (III)
5.	Identify standardized bar bends and explain the information contained on a bar list. (IV)
6.	Describe the procedures for cutting and bending rebars. (V)
7.	Demonstrate the common ties for reinforcing bars. (VI)
8.	Describe how to splice reinforcing bars using lapped, welded and mechanical splices. (VII)
9.	Explain how to place bars in footings, walls, columns, beams, joists and slabs. (VIII)

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MCCCD Official Course Outline:
ABA231   19964-20046	Introduction to Reinforcing Concrete

I. Introduction A. Terms and definitions 1. bar list 2. bar supports 3. CADWELD 4. column ties 5. fabrication 6. heavy bending 7. lap 8. precast 9. shear 10. tie 11. yield strength 12. other B. Concrete overview 1. components 2. strength II. Reinforced concrete A. Reinforcing bar applications 1. rebar placement 2. stirrup placement 3. continuous beam 4. cantilever wall 5. combined footings 6. rectangular footings 7. stair landings 8. columns B. Reinforced structural concrete applications 1. multi-story building frames 2. floors 3. curtain walls 4. shell roofs 5. folded plates 6. other C. Buildings 1. joist floors 2. precast wall unit D. Bridges 1. beam 2. rigid frame 3. box girder III. Tools, materials and bar supports A. Tools 1. hard hat 2. safety shoes 3. 2" leather belt 4. tie-wire reel 5. tool pouch 6. striker 7. end-cutting pliers 8. side-cutting pliers 9. other B. Reinforcing bars 1. grades 2. specifications 3. sizes C. Bar identifications 1. mill marking 2. bar size 3. type of steel 4. grade D. Bar supports 1. uses 2. classes 3. types 4. identification E. Precast concrete blocks 1. plain 2. with wires F. Standee support IV. Reinforcing bar fabrication A. Fabrication vs. manufacturing B. Bar bend designation 1. American Concrete Institute (ACI) and Concrete Reinforcing Steel Institute (CRSI) standards 2. out-to-out reading of dimensions C. Bundling and tagging D. Bar list 1. types 2. sizes and lengths 3. shipment information E. Details 1. hooks 2. spirals 3. radial bending F. Tolerances V. Cutting and bending rebar A. Cutting 1. oxyacetylene torch 2. power hacksaw 3. bolt cutters 4. portable power shears B. Bending 1. hickey bar 2. jigs 3. power benders VI. Tying reinforcing steel A. Types of ties 1. snap 2. wrap-and-snap 3. saddle 4. wrap-and-saddle 5. figure eight 6. nailhead B. Percentage of ties 1. 25% 2. 50% 3. 100% C. Tying tips VII. Splicing reinforcing steel A. Lapped 1. variables 2. contact splice 3. spaced-lap splice B. Welded 1. requirements 2. lap splice with plate 3. double-lap splice 4. butt splices C. Mechanical 1. coupling 2. end-bearing D. CADWELD rebar splice 1. characteristics 2. components VIII. Placing reinforcing steel A. Footings 1. bars in footings 2. square footing 3. rectangular footing 4. continuous wall footings B. Pile caps C. Mat or raft slab footings D. Figure bar spacing E. Dowels 1. column dowels 2. footing excavations 3. dowel template 4. dowel cage F. Bars in walls 1. single-curtain 2. double-curtain 3. retaining 4. placing sequence G. Wall-mat supports 1. nail spacer 2. slab bolster spacer 3. block spacer H. Wall-mat spacers and spreaders I. Cantilever retaining walls J. Bars in columns 1. standard column ties 2. closed column ties 3. tying techniques 4. spirals 5. supports K. Bars in beams 1. general procedure 2. preassembled reinforced steel procedures 3. closed ties L. Bars in joists M. Bars in slabs 1. one-way 2. two-way

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