{"id":3111,"date":"2026-11-06T08:39:12","date_gmt":"2026-11-06T08:39:12","guid":{"rendered":"https:\/\/fenzemin.com\/projects\/karakoy-eren-holding-office-building\/"},"modified":"2026-11-06T08:49:39","modified_gmt":"2026-11-06T08:49:39","slug":"karakoy-eren-holding-office-building","status":"publish","type":"page","link":"https:\/\/fenzemin.com\/en\/projects\/karakoy-eren-holding-office-building\/","title":{"rendered":"Karak\u00f6y \u2013 Eren Holding Office Building"},"content":{"rendered":"\n
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Our Projects<\/a> \u00b7 Karak\u00f6y, Istanbul \u00b7 2024<\/p>\n\n\n\n

Foundation Below Sea Level in Karak\u00f6y: Eren Holding Office Building<\/h1>\n\n\n\n

On a waterfront plot surrounded by narrow streets, we built secant bored pile shoring and carried out jet grout ground improvement for the main contractor Sam \u0130n\u015faat.<\/p>\n<\/div>\n<\/section>\n\n\n\n

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Project summary<\/h2>\n\n\n\n

For Eren Holding’s office building in Karak\u00f6y, we carried out the excavation support and ground improvement works for the main contractor Sam \u0130n\u015faat. The plot was right on the waterfront and the foundation level was about 4 m below sea level.<\/p>\n\n\n\n

We formed the retaining wall around the excavation with 100 secant bored piles of \u00d865 cm. Below the foundation, 800 tangent jet grout columns of \u00d880 and \u00d8100 cm created a base sealed against groundwater and improved the ground.<\/p>\n\n\n\n

Challenge: a foundation below sea level<\/h2>\n\n\n\n

Because the foundation level was about 4 m below sea level, we carried out jet grouting from the surface before excavation, forming the columns only within the target depth below the foundation and drilling empty through the ground above. When the excavation was opened, the ground below the foundation was already sealed and the formation stayed dry.<\/p>\n\n\n\n

Challenge: narrow streets and limited working hours<\/h2>\n\n\n\n

The streets leading to the site were narrow, so work was only possible between 10:00 and 17:00, which reduced daily output. We planned the concrete pours with the necessary permits and, thanks to our crew’s dedication, delivered on schedule.<\/p>\n\n\n\n

Outcome<\/h2>\n\n\n\n

The client thanked us in person. The diaphragm wall crew that came on site after us broke through the jet grout columns to build their wall, and their foreman’s words were the best feedback we could get:<\/p>\n\n\n\n

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\u201cI have been doing this for a long time and have never seen such good jet grouting. After this jet grout work our job was very easy.\u201d<\/p>\nForeman of the diaphragm wall crew that followed us, translated from Turkish<\/cite><\/blockquote>\n\n\n\n

We worked with the main contractor Sam \u0130n\u015faat as true solution partners on this project.<\/p>\n<\/div>\n\n\n\n

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Project facts<\/h2>\n\n\n\n