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The most easily overlooked visa items at construction sites – the earthwork and stone work section: 1. Groundwater is not taken into account when bidding for earthwork. If seepage is observed during excavation, it is possible to request a visa for the groundwater level; the cost of excavating wet soil is higher than that of dry soil, and it is even more expensive to excavate silt. If there are underground obstacles, a visa should definitely be requested, as the cost of removing such obstacles is also considerable. Also, if there is significant seepage, a construction plan can be prepared to request drainage and dewatering measures as well as slope stabilization measures. 2. In cases where it is not possible to pile up sufficient backfill on site due to limited space or unstable slopes, an approval should be obtained for the amount of soil to be transported outside and the distance for transportation. Since in bidding, consideration is usually given to piling the soil on site, and the excess soil is only transported away later; if the excavated soil is taken away and soil has to be purchased again for backfilling, this cost will not be accounted for unless it is clearly specified. 3. As for the distance for transporting earthwork, it’s necessary to check whether it is reasonable; if it stays within the specified range, then no problem, but if it exceeds that range, a fee for the distance must be paid. Everyone knows how high oil prices are these days. 4. During the foundation construction, brick formwork was used to meet the employer’s demands for accelerating progress or due to the need to backfill as soon as possible because of slope instability; even if such a requirement was not specified in the tender documents, a claim can still be submitted. The cost of brick formwork is higher than that of conventional formwork. 5. During the foundation construction phase, if work has to be suspended due to rain or if the schedule is delayed for reasons on the client’s side, the costs associated with drainage and water removal can be claimed through time-sheet visas. Of course, in the event of a prolonged suspension of work, it is essential to record such suspensions; do not wait until work resumes to issue the visas – they should be issued at least once a month. This is also the principle behind issuing visas for prolonged periods of suspension. Otherwise, over time, it will be difficult for the client’s supervisor to conduct an assessment, and it will be troublesome to sign supplementary agreements later on. 6. The construction entity shall be responsible for the preparation of the site, including ensuring proper access, utilities, and grading. If Party B also participates in this work, it can negotiate with Party A.