That’s why rebar couplers are getting more attention. In such a lap splice, two culms are overlapped by at least one internode and lashed together at two or three locations. 20.26 (a)) are the most basic type of this connection ( Jayanetti and Follet, 1998). The length of the lap varies depend on concrete. The use of higher-strength concretes permits shorter lap lengths. Traditional joining methods rely principally on lashing (Group 3) with or without dowels (Group 4B) lap-splices ( Fig. A lap is when two pieces of reinforcing bar (rebar) are overlapped to create a continuous line of rebar. The contact lap splices with a 150, 200, and 250 mm lap. The bar sizes from number 8 to number 11 with yields of 60 or 75 ksi are used in current design practice for structural framing And the accepted concrete strengths by code vary from 8000 to 12,000 psi. The tensile resistance of the lap spliced bars in the double pullout specimens was measured directly. RCC framed structural buildings nowadays are being built to 100 stories and more. In projects with small bar sizes such as of number 6 or number 8, relatively low yield stress in steel, and building heights of 15 stories or less, lap splices have performed well over a long time. In that case, we need more pieces of steel bars that must be spliced together to achieve the desired length. Splicing is required when the required length of a bar suppresses the available length of steel rod, or the rod may be too long to be delivered conveniently.įor example, suppose we need to build a 30 m long building, but there is not a single 30 m long bar available in the market. Splices shall not be installed in areas where the harness is designed to flex.In almost all RCC structures, rebars need to be spliced. Replacement conductors shall be of the same voltage and current rating as the original conductor. where s is the spacing of cross wires and d is calculated in accordance with 25.4.7.2 (b). Western Union splices are used for solid conductors.Ĭable ties/lacing shall not be installed across the splice/solder sleeve body, unless sufficient protection is provided to prevent compression damage to the termination and/or to the insulation of adjacent conductors. Tension lap splice length st of welded plain wire reinforcement in tension between outermost cross wires of each reinforcement sheet shall be at least the greatest of (a) through (c): (a) s + 2 in. Select Reinforcement Type: Development Specific Inputs. Tubing is tightly shrunk, with proper strain relief, overlap and no exposed conductive surfaces. Select Applicable ACI Standard: ACI 318-14. The termination is fully wetted, smooth and shiny. Tubing is tightly shrunk with proper strain relief, overlap and no exposed conductive surfaces. Tubing is tightly shrunk with proper strain relief. The termionation is fully wetted, smooth and shiny. Tubing is tightly shrunk, with proper strain relief, overlap and no exposed conductive surfaces. Just two special bolts and a bar spacer are needed to join the top post to the base post. The LAP SPLICE is a ground- mounted breakaway system for any size SP-80 RIB-BAK U-channel. Conductor(s) exhibit proper bend radius and strain relief. The simplest, easiest-to-use and most economical breakaway signpost system. Overlaps meet minimum electrical spacing, while providing strain relief. Indents are symmetrical and centered on the crimp barrel. The contact has been deformed only by tool indenters. Final assembly profile shall not impact form, fit or function.Ĭable ties/lacing shall be installed at both ends of a splice or solder sleeve, but placement shall not violate stress relief requirements. The location of splices shall be staggered to minimize the increase in profile to the harness. The splice exhibits a smooth profile, proper strain relief, and is located in an area of the harness not subjected to flexure. See Section 4.01 "Cable and Harness, General Requirements", and Section 6.01 "Through-Hole Soldering, General Requirements", for common accept/reject criteria. CABLE AND HARNESS SPLICES CABLE AND HARNESSĪ splice is the joining of two or more conductors together in a manner that results in a permanent electrical termination and mechanical bond, and may be completed by either crimp or solder process.
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