Rainy season, construction or pit (groove) trench dug unable to proceed to the next process, you can stay in the basement elevation above 150 ~ 300mm layer do not dig until the next re-excavation process began.

Pit construction or rainy season (groove), trench dug out cannot be timely for the next operation, you can leave the base elevation above 150 to 300 mm, a level not to dig to the next operation before you start digging again.

Before rainy season constructs when promptly or the hole excavated for building foundation (trough), the trench digs cannot carry on the next working procedure, may above the basis elevation keep 150~300mm one not to dig, waits the next working procedure to start again to dig eliminates.

Construction or excavation of the rainy season (slot), trench digging deep when not in time for the next process, elevation 150~300mm a layer above do not dig in the basement, before the start of the next process to grub.

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