I. Overview
Not only will the foundation not be damaged, but it will also undergo a fundamental upgrade. Standard shifting and lifting projects include two critical steps: “structural underpinning” and “foundation reconstruction.” Considering the rainy climate and soft soil characteristics, we redesign and reinforce the new foundation to ensure the house’s post-construction stability far exceeds its pre-construction state, fundamentally resolving issues like settlement (Ambles) and tilting.
2. Will the foundation and base be damaged during the construction process?
No damage will occur. We employ “non-contact force transfer” technology.
Structural Underpinning (Underpinning): The first step involves constructing a closed reinforced concrete ring beam (Ring Balk) beneath the house. This means the entire weight of the house is smoothly transferred onto this “rigid base,” eliminating reliance on the old foundation.
Static Balance Lifting: Hydraulic jacks operate beneath the ring beam, lifting the house slowly and evenly without impact loads, ensuring no hammering or vibration damage to the original foundation.
Foundation soil protection: Standard construction includes slope shoring (Shoring) and necessary water level monitoring to prevent soil erosion from Indonesia’s rainy season flooding or soil disturbance caused by excavation, ensuring structural stability of the construction area’s soil.
3. Will it subside again after completion?
The risk of subsidence after standardized construction is extremely low, even better than newly built structures. Many property owners worry about secondary settlement after lifting, but professional engineering completely eliminates this concern through the following three safeguards:
⑴、Foundation Rebirth (Foundation Reconstruction)
After the house is moved or lifted into position, we don’t simply “place it on the ground.” Instead, we rebuild the foundation according to Indonesia’s SNI 2847 (Concrete Structure Standards):
Deep Anchoring: In soft soil areas like Jakarta and Semarang, we install micropiles or steel pipe piles to transfer the building’s load-bearing points through the loose layers, reaching the deeper hard soil or bedrock.
Grout Solidification: High-pressure chemical grouting is applied to the foundation, transforming the original loose soil into solid blocks, significantly enhancing load-bearing capacity.
⑵、Anti-settlement design
The newly constructed support piers and tie beams have larger load-bearing areas and higher rigidity compared to the old foundation, effectively resisting the common uneven settlement issues in Indonesia.
⑶、Addressing the external factors that induce settlement
Elevation projects often simultaneously address issues of rainwater backflow (Banjir) and groundwater seepage. Since the foundation is no longer repeatedly soaked and softened by rainwater, the stability of the soil has been permanently improved.
IV. Compliance Tips for the Indonesian Environment
Seismic Resistance and Stability: The new foundation design must comply with SNI 1726:2019 seismic standards to ensure no displacement or sliding occurs under seismic transverse wave action.
Soil Report: Prior to formal construction, we recommend that the owner review or conduct a simple geotechnical test (Sondir Test) to ensure the reinforcement plan perfectly matches the local soil conditions.
Quality Commitment: Professional institutions will provide foundation settlement monitoring reports to ensure post-delivery settlement remains within the extremely small range permitted by regulations.
5. Summary
Professional shifting and lifting engineering is not just about changing position or height, but a “bone-deep” foundational upgrade. Through scientific underpinning and foundation reinforcement, your house will completely bid farewell to previous sinking risks, establishing itself on a sturdier, more durable scientific foundation. %% V. Summary %% Expert Tip: %% Given the widespread land subsidence in some Indonesian cities (e.g., northern Jakarta), when elevating a house, we recommend setting the indoor floor level above the projected waterline for the next 10-15 years, combined with micropile support, to achieve truly long-term stability.
Expert Tips:
Given the widespread urban land subsidence in some Indonesian cities (such as northern Jakarta), when elevating houses, we recommend setting the indoor floor elevation above the projected water level for the next 10-15 years, combined with micropile support, to achieve truly long-term settlement.
印尼 SNI 2847（混凝土结构标准） 重新建造基础：
深层锚固： 在雅加达、三宝垄等软土地基区，我们会加打微型桩（Micropile）或钢管桩，让房屋受力点穿过松软层，直达深处的硬土层或岩石层。
注浆固化： 对地基进行高压化学注浆，将原有的松软土壤转化为坚硬的块体，大幅提升承载力。
⑵、抗沉降设计
新建的支承墩台和连系梁比老旧基础拥有更大的受力面积和更高的刚度，能有效抵御印尼常见的不均匀沉降。
⑶、解决诱发下沉的外部因素
抬升工程通常会同步解决雨水倒灌（Banjir）和地下水渗漏。由于地基不再受雨水反复浸泡软化，土体的稳定性得到了永久性的改善。
四、 针对印尼环境的合规提示
抗震与稳定性：新基础的设计必须符合SNI 1726：2019 抗震规范，确保在地震横波作用下，地基不发生位移或滑移。
土壤报告：在正式施工前，我们会建议业主查阅或进行简单的土力学测试（Sondir Test），确保加固方案与当地土质完美匹配。
质量承诺：专业机构会提供基础沉降监测报告，确保工程交付后的沉降量处于规范允许的极小范围内。
五、 总结
专业的移位与抬升工程不仅是改变位置或高度，更是一次“换骨”级的基础升级。通过科学的托换与地基补强，您的房子将彻底告别以往的下沉隐患，建立在更结实、更耐久的科学基石之上。
专家提示：
鉴于印尼部分城市存在整体性的城市土地沉降（如雅加达北部），在抬升房屋时，我们建议将室内地坪标高设定在未来 10-15 年预计水位线以上，并配合微型桩支护，以实现真正意义上的长久安居。