{"id":49112,"date":"2023-05-21T08:00:05","date_gmt":"2023-05-20T23:00:05","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=49112"},"modified":"2026-05-16T13:49:49","modified_gmt":"2026-05-16T04:49:49","slug":"cost-estimate-for-a-private-stone-wall","status":"publish","type":"post","link":"https:\/\/norimen.net\/en\/private-stone-wall-cost-estimate\/","title":{"rendered":"Estimated Costs for Measures to Prevent Stone Wall Collapses in Private Construction Projects and the Reasons Therefor"},"content":{"rendered":"

Hello, everyone.<\/p>\n

This is Enta.<\/p>\n

\"Quotation\"<\/p>\n

When we receive a request for a quote from a private client, we first conduct a site survey.<\/p>\n

Then, based on that, we create the on-site drawings (layout drawings, cross-sectional drawings, detail drawings, etc.).<\/p>\n

I decide on the construction method to some extent while looking at the drawings, but at that point, I do find myself wondering if I should run a stability analysis.<\/p>\n

If you rely too much on experience points, you end up going too far in one direction, so this is to maintain a certain level of balance.<\/p>\n

 <\/p>\n

Especially when working in the Red Zone (steep slopes), keep in mind that depending on the type of work and construction method, the area may be reclassified as a Yellow Zone, so be sure to handle this carefully.<\/p>\n

After all, consistency and supporting evidence are crucial for documents submitted to government agencies, aren't they?<\/p>\n

Besides, when the red zone turns into the yellow zone, asset values go up, so I'm really putting my all into it.<\/p>\n

 <\/p>\n

However, in the case of private construction projects, soil surveys aren't actually conducted, so<\/p>\n

We use the \u201cNational Soil Information Database\u201d to view nearby core logs and select the appropriate soil type. (Consistency)<\/p>\n

\"Bar<\/p>\n

A bar chart is a type of data visualization like this.<\/p>\n

 <\/p>\n

I adjust this to roughly match the actual height of the site, and while visualizing the site, I draw a sketch (blueprint) that\u2019s reasonably close to reality.<\/p>\n

\"Bar<\/p>\n

\u2191 This is a drawing (blueprint) based on a columnar diagram, but for private construction projects, it\u2019s usually simplified even further.<\/p>\n

 <\/p>\n

Once you've drawn this, we'll move on to the stability analysis.<\/p>\n

We generally use the stability analysis software from Godai Development for our calculations.<\/p>\n

Go-Da Development Co., Ltd.<\/a><\/p>\n

\"Stability<\/p>\n

We do this to incorporate the stability analysis results into the drawings.<\/p>\n

 <\/p>\n

This is where the on-site quantity calculations begin.<\/p>\n

Once you've calculated the quantities, you can finally start preparing the estimate!<\/p>\n

 <\/p>\n

It actually takes quite a while to come up with a quote.<\/span><\/strong><\/span><\/p>\n

And since we don't just work on that quote alone, we'd like at least a week to prepare it.<\/p>\n

 <\/p>\n

However, even after going to all this trouble, it\u2019s pretty disheartening to be told, \u201cWe\u2019ll consider it later,\u201d so,<\/p>\n

First,Estimated amount<\/span><\/strong><\/span>I'll let you know.<\/p>\n

\n

Estimated Costs for Measures to Prevent Stone Wall Collapses in Private Construction Projects<\/span><\/strong><\/span><\/p>\n

 <\/p>\n

A unit of around 30 square meters costs between 800,000 and 1,000,000.<\/p>\n

As the quantity increases, the total amount will increase accordingly, but the unit price will decrease as the quantity increases.<\/p>\n

 <\/p>\n

In addition, there will be an extra charge for rebar insertion work or dewatering drilling.<\/p>\n

That's roughly the range\u2014it'll be between 500,000 and 1,000,000.<\/p>\n

It depends on the number of units and their installation locations.<\/p>\n

It depends on factors such as whether scaffolding is needed, whether core drilling is required, or whether the space is too narrow.<\/p>\n

\"Moldam<\/p>\n

Based on my experience, for private construction projects involving stone walls in very poor condition (already on the verge of collapsing), the cost is typically between 3 and 4 million.<\/p>\n

If we do the work here,Around 2 million on average<\/span><\/strong><\/span>We are carrying out the construction work.<\/p>\n

 <\/p>\n

The only question left is how far (or on what scale) we'll take it.<\/p>\n

Unlike with public works projects, the extent of the reinforcement can be determined based on the budget.<\/p>\n

Since we can simply lower the safety factor, both the designer and the contractor can carry out the construction exactly as the client desires.<\/p>\n

 <\/p>\n

However, the design calculations are based on raising the safety factor of the existing masonry\u2014which is currently set at 0.98 to 1.0\u2014to 1.1.<\/p>\n

A safety factor of 0.98 indicates that the structure has already collapsed or is showing signs of failure.<\/p>\n

I think if we raise it to 1.1, we'll be just fine.<\/p>\n

It all depends on the client from here on out.<\/span><\/strong><\/span><\/p>\n

\n

\"Moldam<\/p>\n

 <\/p>\n

The reason I\u2019m explaining this in such detail is that preparing a quote takes time and costs money.<\/p>\n

Since our time isn't unlimited, we want to focus on designing and providing estimates only for clients who are serious about having the work done!<\/p>\n

That's how I feel, lol<\/p>\n

Alternatively, there is also the idea of charging a fee for estimates on private construction projects going forward, but,<\/p>\n

I was thinking that maybe it would be a little better if I could create a simple questionnaire, use it as a template to some extent, and come up with a rough estimate...<\/p>\n

I requested a quote but haven't heard anything back<\/span><\/strong><\/span>That kind of thing happens all the time, doesn't it?<\/p>\n

When that happens, you end up wondering, \u201cWhat was this past week all about??\u201d<\/p>\n

 <\/p>\n

Given the times, maybe it's about time to start charging for estimates,<\/p>\n

I thought we might need to take measures like offering a discount if we take on the construction work. (After everything that happened, lol.)<\/p>\n

 <\/p>\n

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

Hello, everyone. This is Enta. When we receive a request for a quote from a private client, we first conduct a site survey. Then, based on that, we create drawings of the site (including plan views, cross-sections, and detailed drawings). We decide on the construction method to some extent while reviewing the drawings, but at that point, we inevitably start wondering whether we should perform a stability analysis\u2026<\/p>","protected":false},"author":2,"featured_media":2086,"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":[4660,1],"tags":[123,124,1491,1746,2966,5706],"class_list":["post-49112","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-morudam","category-others","tag-123","tag-124","tag-1491","tag-1746","tag-2966","tag-5706"],"acf":[],"yoast_head":"\n\u6c11\u9593\u5de5\u4e8b\u306b\u304a\u3051\u308b\u77f3\u7a4d\u5d29\u58ca\u5bfe\u7b56\u5de5\u4e8b\u306e\u6982\u7b97\u91d1\u984d\u3068\u305d\u306e\u7406\u7531 - 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