`, feed: ``, newStyle: ``, Text_and_Display_ads: ``, Display_ad_preview_Square: ``, Display_ad_preview_Horizontal: ``, Display_ad_preview_Vertical: ``, In_feed_Ad_Text_only: ``, In_feed_Ad_Image_on_the_side: ``, In_feed_Ad_Title_above: ``, In_feed_Ad_by_google_recommended: ``, In_Feed_Ad_Image_Above: ``, In_article_Ad: ``, } jQuery(".hANwub").after(` ${separator} ${auto} ${feed} ${Text_and_Display_ads} ${newStyle} ${Display_ad_preview_Square} ${Display_ad_preview_Horizontal} ${Display_ad_preview_Vertical} ${In_feed_Ad_Text_only} ${In_feed_Ad_Image_on_the_side} ${In_feed_Ad_Title_above} ${In_feed_Ad_by_google_recommended} ${In_Feed_Ad_Image_Above} ${In_article_Ad} `) // function addAd(){ // $('.CodeMirror-line').html($('.CodeMirror-line').html() + 'ABCD') // } jQuery(".adbtn").click(function(e) { copyToClipboard(adCodes[e.currentTarget.id]) // $('#myTA').val(adCodes[e.currentTarget.id]) }) // var userSelection = document.getElementsByClassName('.adbtn'); // for (var i = 0; i < userSelection.length; i++) { // (function(index) { // userSelection[index].addEventListener("click", function() { // console.log(this); // addAd(this) // }) // })(i); // } // jQuery(".rQS16b").before(`
Ads
`) jQuery("#myTA").click(function() { this.focus(); this.select() }); var ta = document.getElementById('myTA'); // ta.addEventListener('copy', onCopyEvent); // ta.addEventListener('cut', onCopyEvent); ta.value = ''; clipboardDiv = document.createElement('div'); clipboardDiv.style.fontSize = '12pt'; // Prevent zooming on iOS // Reset box model clipboardDiv.style.border = '0'; clipboardDiv.style.padding = '0'; clipboardDiv.style.margin = '0'; // Move element out of screen clipboardDiv.style.position = 'fixed'; clipboardDiv.style['right'] = '-9999px'; clipboardDiv.style.top = (window.pageYOffset || document.documentElement.scrollTop) + 'px'; // more hiding clipboardDiv.setAttribute('readonly', ''); clipboardDiv.style.opacity = 0; clipboardDiv.style.pointerEvents = 'none'; clipboardDiv.style.zIndex = -1; clipboardDiv.setAttribute('tabindex', '0'); // so it can be focused clipboardDiv.innerHTML = ''; document.body.appendChild(clipboardDiv); function onCopyEvent(e) { e.preventDefault(); copyToClipboard(getTextAreaSelection(e.target)); // copy text // copyToClipboard(getTextAreaSelection(e.target)) // copyHtmlToClipboard(getTextAreaSelection(e.target)); // html } // function copyHtmlToClipboard(html) { // clipboardDiv.innerHTML = html; // var focused = document.activeElement; // clipboardDiv.focus(); // // window.getSelection().removeAllRanges(); // // var range = document.createRange(); // // range.setStartBefore(clipboardDiv.firstChild); // // range.setEndAfter(clipboardDiv.lastChild); // // window.getSelection().addRange(range); // var ok = false; // try { // if (document.execCommand('copy')) ok = true; // else utils.log('execCommand returned false !'); // } catch (err) { // utils.log('execCommand failed ! exception ' + err); // } // focused.focus(); // } function getTextAreaSelection(elem) { var selectedText; if (document.selection != undefined) // IE version { elem.focus(); var sel = document.selection.createRange(); selectedText = sel.text; } else if (elem.selectionStart != undefined) // Mozilla version { var startPos = elem.selectionStart; var endPos = elem.selectionEnd; selectedText = elem.value.substring(startPos, endPos) } return selectedText; } function copyToClipboard(text) { if (window.clipboardData && window.clipboardData.setData) { // Internet Explorer-specific code path to prevent textarea being shown while dialog is visible. return window.clipboardData.setData("Text", text); } else if (document.queryCommandSupported && document.queryCommandSupported("copy")) { var textarea = document.createElement("textarea"); textarea.textContent = text; textarea.style.position = "fixed"; // Prevent scrolling to bottom of page in Microsoft Edge. document.body.appendChild(textarea); textarea.select(); try { return document.execCommand("copy"); // Security exception may be thrown by some browsers. } catch (ex) { console.warn("Copy to clipboard failed.", ex); return false; } finally { document.body.removeChild(textarea); } } }


12 Causes For Cracks In RCC Slab

12 Causes For Cracks In RCC Slab
1– Plastic shrinkage: When water dries up rapidly from the surface, plastic shrinkage occurs. As a result,
the top surface of the slab dries more quickly than the bottom one that leads to its pulling apart. Weather conditions like wind and low humidity accelerate this process. The shrinkage can be avoided by keeping the surface moist.



2– SettlementOwing to certain factors like poorly compacted soil, sand in soil and water erosion, the ground under the slab displaces leading to settlement cracks. Poorly compacted soil can be remedied by digging it out and replacing it with crushed stone. In the event of water drains across sidewalk, backfill first with a few inches of gravel.


3– Drying shrinkageWhen a slab that is restrained is drying, it causes shrinkage.
4– Chemical factors: When the aggregates and cement present in the concrete are not harmonious with each other, it causes some chemical reactions that leads to cracks.
5– Corrosion: Sometimes, the steel wire mesh inside the concrete catches rust on getting moist and coming in contact with air. This happens due to any of the above mentioned reasons when a crack on the slab surface develops and air and water seeps in.


6– Overloads: Concrete is designed to withstand only a limited amount of load. If it exceeds that limit, cracks are bound to develop.
7- Lack of knowledge about the spacing between main to main as well as distribution to distribution bars.
8- Inadequate curing at the time of settlement of concrete leads to cracks due to heat.
9- Improper control on material proportions especially the silt content , water cement ratio.



10- Excessive vibrations during casting resulting in opening up of the binding wires ( stirrups opening )
11- Insufficient precautions during striking off. ( may be early opening of the slab before it attains the strength )
12- Excessive deformation of the cantilever slab at the ends (or in case of simply supported slabs in the mid span )due to settlement of any of the staging props.

COMMENTS

BLOGGER: 1
Loading...

Follow us

Name

2D and 3D House Plan,3,Architectural Engineering,109,Civil Engineering,137,Electrical Engineering,5,Funny,1,House Design With Plan,23,Math,8,Plant and Garden,2,Structural Engineering,9,Technology,4,Water Resource Engineering,1,
ltr
item
Engineering Discoveries: 12 Causes For Cracks In RCC Slab
12 Causes For Cracks In RCC Slab
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLmY6jZgz8GMJ6S0-r2ngYAH8vPutVGc-khXn5ti4wuD3OXPvuSpm4aSuei_hJMeBE333uwWrh3PBBY2ARpmQXbU_ZKuLxa7gl_r2LJiNU5yGcl53MBY-o4cqgBncRX66piEdI3sfwFu9u/s1600/cuases-of-Rcc-slab.jpg
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLmY6jZgz8GMJ6S0-r2ngYAH8vPutVGc-khXn5ti4wuD3OXPvuSpm4aSuei_hJMeBE333uwWrh3PBBY2ARpmQXbU_ZKuLxa7gl_r2LJiNU5yGcl53MBY-o4cqgBncRX66piEdI3sfwFu9u/s72-c/cuases-of-Rcc-slab.jpg
Engineering Discoveries
https://www.engineeringdiscoveries.net/2019/06/12-causes-for-cracks-in-rcc-slab.html
https://www.engineeringdiscoveries.net/
https://www.engineeringdiscoveries.net/
https://www.engineeringdiscoveries.net/2019/06/12-causes-for-cracks-in-rcc-slab.html
true
3387452673499213686
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy