{"id":43999,"date":"2021-04-11T08:00:55","date_gmt":"2021-04-10T23:00:55","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=43999"},"modified":"2026-05-17T12:09:43","modified_gmt":"2026-05-17T03:09:43","slug":"rebar-insertion-condition-2","status":"publish","type":"post","link":"https:\/\/norimen.net\/en\/rebar-insertion-condition-2\/","title":{"rendered":"Adjustment of Market Unit Prices for Rebar Insertion Workers Based on Site Conditions (Site Conditions II)"},"content":{"rendered":"

Hello, everyone.<\/p>\n

This is Enta.<\/p>\n

Today\u2019s post is a continuation of the one from the other day.<\/p>\n

What Is the Adjustment for Site Conditions in the Market Unit Price for Rebar Installation Work? (Site Conditions I)<\/a><\/p>\n

If you haven't seen \"Site Conditions I\" from the other day, please check it out above.<\/p>\n

\"Inverter<\/p>\n

So, since this time we\u2019re talking about \u201cSite Conditions II,\u201d let\u2019s start by asking: What exactly are \u201cSite Conditions II\u201d?<\/p>\n

The other day,Sites that do not meet Site Condition I fall under Site Condition II.<\/span><\/strong><\/span><\/p>\n

Construction sites where cranes and other equipment cannot be set up<\/span><\/strong><\/span>Therefore, scaffolding will be installed.<\/p>\n

For scaffolding installation, the hole diameter for single-hole drilling will be \u03c665.<\/p>\n

As you can see, here is the table of market unit prices for civil engineering work<\/p>\n\n\n\n\n
Types of Scaffolding<\/span><\/td>\nSlope Vertical Height<\/span><\/td>\nDrilling Length<\/span><\/td>\nDrill Hole Diameter<\/span><\/td>\n<\/tr>\n
Temporary Scaffolding (Single-Pipe Scaffolding, Earth Scaffolding)<\/strong><\/span><\/td>\n40 meters or less<\/strong><\/span><\/td>\n1 m \u2264 L \u2264 5 m<\/strong><\/span><\/td>\n42 mm \u2264 \u03c6 \u2264 65 mm<\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

In this context, the worksite typically uses a lightweight drilling machine (such as the inverter chisel shown in the photo above), and the scaffolding width is about 2 meters. A \"lightweight drilling machine\" generally refers to a machine weighing around 300 kg.<\/p>\n

However, these days, it\u2019s common to use spring drills to bore holes even on scaffolding that\u2019s about 2.0 meters high.<\/p>\n

If you carefully calculate the drilling angle, set the scaffold height, and assemble it properly, you can drill holes using a spring drill. (Since the spring drill (500 kg) is larger than a lightweight drilling machine, it\u2019s difficult to maneuver.)<\/p>\n

\"Drilling:<\/p>\n

\"No way\u2014a drilling machine wouldn't fit in such a tight space, right!?\" That's what you're probably thinking, isn't it?<\/p>\n

It's usually possible to get in. About 90% of the time... or at least 80% of the time, you're guaranteed to get in!<\/p>\n

Based on my experience, there have been countless times when I thought, \u201cThere\u2019s absolutely no way this is possible!!!\u201d but in the end, we somehow managed to get the machine in, drill the hole, and finish the job lol.<\/p>\n

This is where the contractor's creativity, patience, and experience really come into play.<\/p>\n

 <\/p>\n

Did you understand Site Conditions II?<\/p>\n

I don't think selection and adaptation are all that difficult, but ultimately...The issue is the stability of the borehole wall during drilling.<\/span><\/strong><\/span>There's no doubt that it will happen.<\/p>\n

In this case, the advantage is that you can quickly switch to double-pipe drilling using a spring drill or similar equipment, and making the change is also easy. (For details on drilling, please refer to \u201cSite Conditions I\u201d from the other day.)<\/p>\n

However, please be aware that it may be difficult to adjust the width of temporary scaffolding.<\/p>\n

I think it was classified as \"optional temporary construction\" right from the ordering stage, so the government agency doesn't want to spend money on it.<\/p>\n

It's a subtle way of saying, \"I'm not going to look beyond the design, okay!?\"<\/p>\n

I believe the main difference is simply that the calculation method changes from \"Site Conditions II\" to \"Cumulative Calculation\" (double-pipe drilling for anchor work).<\/p>\n

 <\/p>\n

See you later.<\/p>","protected":false},"excerpt":{"rendered":"

Hello, everyone. This is Enta. Today, I\u2019m continuing from my previous post: \u201cWhat Does \u2018Adjustment for Site Conditions\u2019 Mean in Market Unit Prices for Rebar Insertion Work? (Site Conditions I).\u201d If you haven\u2019t read the previous post on Site Conditions I, please check it out above. Now, since this post is titled \u201cSite Conditions II,\u201d let\u2019s start by asking: What exactly are Site Conditions II? In the previous post\u2026<\/p>","protected":false},"author":2,"featured_media":43995,"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":[30],"tags":[44,92,116,383,461,504,2849,4400,4402],"class_list":["post-43999","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lock-bolt","tag-44","tag-92","tag-116","tag-383","tag-461","tag-504","tag-2849","tag-4400","tag-4402"],"acf":[],"yoast_head":"\n\u9244\u7b4b\u633f\u5165\u5de5\u306e\u5e02\u5834\u5358\u4fa1\u306b\u304a\u3051\u308b\u73fe\u5834\u6761\u4ef6\u306e\u9069\u5fdc\uff08\u73fe\u5834\u6761\u4ef6\u2161\uff09 - 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