HRC Presentation Assessment "*" indicates required fields "Structural advantages of, Code Provisions for and Practical Applications of HRC Headed Bars and Mechanical Couplers" Thank you for attending our webinar! in order to receive your PDH credit, you must complete this assessment with a score of 70% or better. Please answer the following 10 questions.Name* First Last Company*Date of Presentation* MM slash DD slash YYYY Email* 1. What is a headed bar?* Reinforcing bar with a head attached to one or both ends Effective alternative to hooked bars All of the above 2. What are the primary practical benefits of using headed bars?* To replace standard hooks To reduce congestion To improve constructability All of the above 3. How do ACI 318 compliant headed bars provide for development and anchorage of reinforcing bars?* Bond length only Head bearing only Combination of bond length and head bearing 4. What are the 2 significant changes to development of headed bars in section 25.4.4 in ACI 318-19?* Bar size limitation has been removed Grade limitation has been removed Spacing requirement has been decreased and revised from clear spacing to c/c spacing. A and B B and C 5. What are the significant changes to the headed bar development length expression in ACI 318-19?* Concrete strength limit has been removed Modification factors have been revised and added Minimum development length has been increased Both A and B 6. What ASTM specification governs headed bars?* A615 A706 A970 7. What class of head, defined in the ASTM A970 specification, is required by ACI 318 and IBC?* Class HA Class A Class B 8. Do HRC 670 field installed heads require any end prep on the rebar they will be attached to?* Yes No 9. What ACI Code section defines the base requirement for mechanical splices?* Section 25.4.4 Section 25.5.7 Section 18.2.7 10. Define the requirements of Type 2 mechanical splices.* Develop 1.25fy (specified yield strength) of the bar Develop 1.25fy (specified yield strength) and develop the specified tensile strength of the bar Develop 1.50fy (specified yield strength) and develop the specified tensile strength of the bar NameThis field is for validation purposes and should be left unchanged.
