Engineer Cafe

<div dir="ltr" style="text-align: left;" trbidi="on">
<div class="gmail_default" style="color: magenta; font-family: verdana,sans-serif;">
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<a href="https://blogger.googleusercontent.com/img/proxy/AVvXsEhLRvFJVDtV80a_J7tNvKloYuVZQuAzIXd7NXrcet8YysD8lJYmZV-ZRKULaVqRIwN4SJeXPFd3_JmA1y1Nkmd61z8jgc4_ito2xtF7U5JWw4NQbNJihaSeGa4jEOERr9bcl3QgGDdBAIKQjeD8ccKuElJ6zGL93oGmaWQNmrMODIuVYSvoXegYwTDqnA=" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><span style="font-family: "verdana" , sans-serif;"><img alt="" border="0" src="http://www.crsi.org/images/cmsIT/fckeditor/Image/steel/splice-lap_splice.jpg" style="height: 150px; max-width: 100%; width: 400px;" /></span></a><span style="font-family: "verdana" , sans-serif;">A lap is when two pieces of rebar are overlapped to create a continuous line of rebar. The length of the lap varies depend on concrete strength, the rebar grade, size, and spacing. CRSI's "Reinforcement Anchorage and Splices" includes tables of required lap splice lengths based on these variables.</span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;">Contact splices--in which the bars touch and are wired together--are preferred because they are more secure against displacement during construction. Non-contact lap-spliced bars should not be spaced too far apart.</span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><br /></span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
</div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><img alt="" height="300" src="http://www.crsi.org/images/cmsIT/fckeditor/image/steel/lap_splices.png" style="height: auto; max-width: 100%;" width="550" /></span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><br /></span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><br /></span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;">For lap splice design and construction, the ACI 318 Building Code requires the Engineer to indicate locations and lengths of all lap splices on the structural drawings.</span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;">Where reinforcing bars of two sizes are lap-spliced in tension, industry practice is to use the larger of the tension lap splice length for the smaller bar, or the tension development length for the larger bar. When bars of different sizes are lap-spliced in compression, the lap splice length must be the larger of the compression development length of the larger bar or the compression lap splice length of the smaller bar.</span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;">Lap splices of #14 and #18 bars should not be used, except in compression only to #11 and smaller bars. Lap splices of bundled bars should be based on the lap splice length recommended for individual bars of the same size, and individual splices within the bundle should not overlap each other. The length of lap should be increased 20% for a 3-bar bundle and 33% for a 4-bar bundle. Bar laps should be securely wire-tied together to maintain the alignment of the bars and to provide minimum concrete cover.</span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><br /></span></div>
<div style="color: #222222; font-family: Arial,sans-serif; font-size: 0.77rem; line-height: 1.6; margin: 0px 0px 0.625rem; padding: 0px;">
<span style="font-family: "verdana" , sans-serif;"><br /></span></div>
<span id="docs-internal-guid-2469d475-2d34-e803-85ef-efe6f61dac10" style="font-family: "verdana" , sans-serif;"><br /></span>
<br />
<div dir="ltr" style="margin-left: 0pt;">
<table style="border-collapse: collapse; border: none; width: 624px;"><colgroup><col width="*"></col><col width="*"></col><col width="*"></col></colgroup><tbody>
<tr style="height: 0px;"><td style="background-color: #b6d7a8; border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;"><b>Bar Dia</b></span></div>
</td><td style="background-color: #b6d7a8; border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;"><b>Tension(inch)</b></span></div>
</td><td style="background-color: #b6d7a8; border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;"><b>Compression(inch)</b></span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">10 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">12</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">12</span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">12 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">15</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">12</span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">16 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">18</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">15</span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">20 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">21</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">18</span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">22 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">27</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">21</span></div>
</td></tr>
<tr style="height: 0px;"><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.38; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">25 mm</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">30</span></div>
</td><td style="border: 1px solid rgb(0,0,0); padding: 7px; vertical-align: top;"><div dir="ltr" style="line-height: 1.2; margin-bottom: 0pt; margin-top: 0pt; text-align: center;">
<span style="background-color: transparent; color: #141823; font-family: "verdana" , sans-serif; font-size: 12.6667px; vertical-align: baseline; white-space: pre-wrap;">27</span></div>
</td></tr>
</tbody></table>
</div>
<br />
<table border="0" cellpadding="0" cellspacing="0" style="color: #222222; font-family: arial,sans-serif; font-size: 12.8px; width: 470px;"><tbody>
<tr valign="top"><td style="font-stretch: normal; padding-left: 10px;"><span style="font-family: "verdana" , sans-serif;"><br /></span>
<span style="font-family: "verdana" , sans-serif;"><br /></span></td></tr>
</tbody></table>
</div>
</div>

Rebar compression tension Lap Length

1 rebar 3:29 AM

A lap is when two pieces of rebar are overlapped to create a continuous line of rebar. The length of the lap varies depend on concrete strength, the rebar grade, size, and spacing. CRSI's "Reinforcement Anchorage and Splices" includes tables of requ… Read more »

Top Menu

Rebar compression tension Lap Length

Popular Posts

Blog Archive

Hellow widget