This splice is used for bars too large for lap splicing or, in situations in which the splice may have to be undone at some later point, such as when connecting a column to a setting rig. Lentons and couplers are common names used to refer to mechanical splices. In accordance with the 2009 IBC, the minimum required lap length for spliced reinforcing bars is determined using Equation 1 (see Table 1). Typically, the rebar must have threaded ends to fit into the mechanical splice and then the splice is tightened onto the bar. ACI Compression Development and Lap Splice Lengths for fc 3,000 psi to 5,000 psi. The yield strength, tensile strength (per ASTM A370 15 ), and relative rib area (per ACI 408R-03 8 and ACI 408.3R-09 16) for the steel. Mechanical Splicing Eliminates Large HSRB Lap Splice Development Lengths (ACI 318-19, Section 25.4.2) The traditional and most common method of transferring loads between reinforcing bars has always been the lap splice. Section 12.15.2 of CAI318:08 specifies tension lap splice condition. The bar sizes tested in the study ranges from No. Mechanical splices use metal channel devices to connect two pieces of rebar. ACI 318:08 provisions for lap length Lap length in tension Section 12.15.1 of the ACI 318:08 specifies the tension lap lengths for class A and class B splice as 1.0ld and 1.3ld respectively but not less than 300 mm. Bar numbers 14 and 18 (1.6 and 2.3 inches diameter), bars in tensural tie, joint and flexural locations, such as those found in bridges and some column designs, cannot be lap spliced according to the Building Code of the American Concrete Institute (ACI 318: 12.14.2.1 12.15.5 and 23.3.2.3). ACI PRC-408.3-09 Guide for Lap Splice and Development Length of High Relative Rib Area Reinf Bars in Tension & Commenta ALSO AVAILABLE IN: Choose Product. A minimum of four sets of ties are then evenly spaced along the lap length. The length of the overlap is calculated by using the equation 30 times the bar diameter. ACI Compression Development and Lap Splice Lengths for fc 12.3 and 12.16, respectively. The checker found no problems in this document.A lap splice is when two pieces of rebar are tied together where the bars overlap. Acrobat Accessibility Report Accessibility Report Filename: Deck Construction Manual Chapter 3.pdf Report created by: Organization:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |