#ACI REBAR LAP SPLICE LENGTH CODE#
Provisions in Chapter 12 of the Code attempt to account for the many variables affecting the tension development length, L d *, of a straight bar. The concept of development length of reinforcing bars was introduced in the 1971 ACI Building Code. The ACI Code cites Structural Welding Code Reinforcing Steel (ANSI/AWS D1.4-98) as the standard for welding reinforcing bars. Further information on mechanical splices is presented in the CRSI publication, Reinforcement Anchorages and Splices, 4th Ed., Commentary Section R3.5.2 of the Code discusses welded splices. Regarding Item (i), provisions in other parts of the Code include performance requirements for mechanical and welded splices. The basic premise is the anchorage length or embedment length must be equal to or greater than the required tension development length of the bar. A reinforcing bar must be embedded or anchored a sufficient distance or length in concrete so the bar will be capable of developing its design strength. Anchorage length can also be called embedment length. Two items, 1.2.1(h) and 1.2.1(i), are concerned with anchorage and splicing of reinforcement: (h) Anchorage length of reinforcement and location and length of lap splices (i) Type and location of mechanical and welded splices of reinforcement This report focuses on Item (h), i.e., on determining tension development lengths and tension lap splice lengths of reinforcing bars.
Subscriptions These items are not eligible for return.Įxchanges: Contact ACI’s Customer Services Department for options (+1.248.848.1 ENGINEERING DATA REPORT NUMBER 51 Tension Development and Lap Splice Lengths of Reinforcing Bars under ACI A SERVICE OF THE CONCRETE REINFORCING STEEL INSTITUTE Introduction Section in the 2002 ACI Building Code lists 13 items that must be shown on design drawings or in project specifications. Return shipping fees are the customer’s responsibility.Įlectronic /Downloaded Products & Online Learning Courses: These items are not eligible for return.
#ACI REBAR LAP SPLICE LENGTH FULL#
Printed / Hard Copy Products: The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. For a listing of and access to all product errata, visit the Errata are not included for collections or sets of documents such as the ACI Collection. Document DetailsĬhapter 4-Development of high relative rib area bar reinforcement in tensionĬhapter 5-Lap splices of high relative rib area bar reinforcement in tensionĪppendix A-Recommended supplement to ASTM A615/A615M for high relative rib area barsĪny applicable errata are included with individual documents at the time of purchase. Keywords: bar reinforcement bar ribs bond development length high relative rib area lap splice length. Commentary provisions begin with an “R,” such as “R1.1.1,” and are shown in italics. A commentary to the mandatory language portion is provided for additional information. To assist the user to incorporate the information into a legal document, the relevant portion of the document is written in mandatory language. When such requirements are applicable for a project, the user may incorporate the information in this guide into a legal document however, this guide is not an ACI standard and shall not be adopted by reference into legal documents. This guide provides recommended requirements to determine tension development and splice lengths for high relative rib area bar reinforcement, which are not in commercial production in the U.S.
0 kommentar(er)
