{"id":2717,"date":"2017-03-06T08:00:57","date_gmt":"2017-03-05T23:00:57","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=2717"},"modified":"2026-05-15T19:51:04","modified_gmt":"2026-05-15T10:51:04","slug":"fill-with-concrete-after-drilling-to-the-specified-length","status":"publish","type":"post","link":"https:\/\/norimen.net\/en\/fill-concrete-after-drilling-length\/","title":{"rendered":"Drill Hole Length After Concrete Grouting | Actual Measurement: 500 mm, as Designed"},"content":{"rendered":"<p>Hello, everyone.<\/p>\n<p>This is Enta.<\/p>\n<p>The Nintendo Switch has been released.<\/p>\n<p>I've been a huge gamer for as long as I can remember.<\/p>\n<p>I just have to buy it!<\/p>\n<p>So, I bought *The Legend of Zelda*, but the kids snatched it away from me...<\/p>\n<p>Can I borrow it once my kids are done?....<\/p>\n<p>It's all about the spirit of giving way to others!<\/p>\n<hr \/>\n<p>But that's beside the point.<\/p>\n<p>\n Rock Bolt Design<span style=\"color: #ff0000;\">The borehole length is 3.0 m<\/span>That's it.<\/p>\n<p> For example, if the legal limit is 300,<span style=\"color: #ff0000;\">Rope Material Length<\/span>\u306f<\/p>\n<p> <span style=\"font-size: large;\">Projection + Formwork Thickness + Drilling Length = 0.1 m + 0.3 m + 3.0 m = 3.4 m<\/span><\/p>\n<p> <span style=\"font-size: xx-large;\">So, what about this?<\/span><br \/>\n <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2720\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/8111c33babe9a8b68ae3185360d47eb9.jpg\" alt=\"\" width=\"540\" height=\"460\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/8111c33babe9a8b68ae3185360d47eb9.jpg 540w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/8111c33babe9a8b68ae3185360d47eb9-300x256.jpg 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/p>\n<div align=\"center\">\u00a0<\/div>\n<p>This is clearly a frame that's over 300 mm.<\/p>\n<p> If the actual measurement is 500 mm, doesn't that mean the drilling length will be 200 mm shorter?!?!<\/p>\n<p> \"That's what the government office told me a long time ago.\"<\/p>\n<p>\n Well, it's a pretty common sight, isn't it?<\/p>\n<p> This is what happens when you install the fence along the contours of the hillside rather than following the natural terrain, prioritizing aesthetics instead.<\/p>\n<p> I guess this is fine in its own way, but personally, I think it's a waste of money.<\/p>\n<p> <span style=\"font-size: x-large;\">Ground netting + mortar + effort = a waste of money lol<\/span><\/p>\n<p> That\u2019s a different story if the rebar is thick and the terrain is very rugged.<\/p>\n<p>\n Well, putting that aside, there are often issues with drilling depth in rock bolting work, but,<\/p>\n<p> That's a spot people tend to point out, isn't it?<\/p>\n<p> <span style=\"font-size: xx-large;\"><span style=\"color: #ff1493;\">Conclusion: The drilling depth remains the same!<\/span><\/span><\/p>\n<p> That's all!<\/p>\n<p>\n I can't just say that, lol, so here's an explanation, lololol<\/p>\n<p> The 200-mm section is considered to be the unconsolidated soil section (natural ground).<\/p>\n<p> <span style=\"font-size: large;\"><strong>No, no! It's mortar!<\/strong><\/span>I bet that's what they'll say lol<br \/>\n <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2719\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/f21da4400bffb39610d09b10fce249d9.jpg\" alt=\"\" width=\"540\" height=\"460\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/f21da4400bffb39610d09b10fce249d9.jpg 540w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/f21da4400bffb39610d09b10fce249d9-300x256.jpg 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>The red part is definitely mortar.<\/p>\n<p> In cases where the natural terrain is highly uneven, it is sometimes necessary to spray a low-strength mortar and then install formwork on top of it.<br \/>\n(We used to have quite a bit of leeway in the budget, so we\u2019d do things like leveling, but we don\u2019t do that anymore.)<\/p>\n<p>I think you\u2019ll understand that, from a design perspective, it\u2019s better to have something more solid than the original natural ground to support the structure.<\/p>\n<p> <strong><span style=\"font-size: medium;\">\"If the material used to fill in unevenness is of the same quality as or better than the natural ground, it shall be considered natural ground.\"<\/span><\/strong><br \/>\n <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2721\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/67094dcb31826ec73a3fdd8aa654ba71.jpg\" alt=\"\" width=\"593\" height=\"645\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/67094dcb31826ec73a3fdd8aa654ba71.jpg 593w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/67094dcb31826ec73a3fdd8aa654ba71-276x300.jpg 276w\" sizes=\"auto, (max-width: 593px) 100vw, 593px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2718\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/7f1edbf4582258ea31a72ef4ed963a38.jpg\" alt=\"\" width=\"800\" height=\"249\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/7f1edbf4582258ea31a72ef4ed963a38.jpg 800w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/7f1edbf4582258ea31a72ef4ed963a38-300x93.jpg 300w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/03\/7f1edbf4582258ea31a72ef4ed963a38-768x239.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><br \/>\n Slope Protection Association, \u201cTextbook on Construction Management Techniques for Slope Protection Works, Heisei 19, p. 189\u201d<\/p>\n<p> It is listed as shown above.<\/p>\n<p>\n Therefore, if we interpret the lower portion of the formwork\u2014which became thicker than specified due to the sprayed concrete\u2014as \"natural ground,\" the drilling depth will remain unchanged.<\/p>\n<p> If people start nitpicking over every little detail, it\u2019ll make it impossible to do the work on-site, but I think it can\u2019t hurt to know these things.<\/p>\n<p>&nbsp;<\/p>\n<p>See you later.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hello, everyone. This is Enta. The Nintendo Switch is out now. I\u2019ve been a huge gamer for as long as I can remember. There\u2019s no way I could pass this up! So, I bought *The Legend of Zelda*, but my kids snatched it away from me... I guess I\u2019ll get to play it once they\u2019re done... They\u2019ll let me have it...<\/p>","protected":false},"author":2,"featured_media":2723,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[29,30],"tags":[60,61,221],"class_list":["post-2717","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frame-spraying","category-lock-bolt","tag-60","tag-61","tag-221"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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