Precautions for the safe use of box girder external molds

1、Before casting each joist, check whether the support is stable and make sure it is normal before working.

2、Before the reinforcing cage is put into the mold, it should check and measure the geometrical size of the outer mold to ensure that the relevant size meets the requirements before proceeding to the next process.

3、During the pouring process, pay attention to the insertion position of the vibrating rod to avoid the vibrating rod acting directly on the formwork, causing damage to the panel.

4, concrete pouring is completed and reached the initial condensation to remove the vent hole mold in a timely manner, so as not to cause the hole mold removal difficulties.

5、After the concrete strength of the beam body reaches the corresponding design requirements, pre-tensioning and initial tensioning are carried out sequentially, and the beam body is lifted and transferred to the beam storage platform after the initial tensioning is completed.

6、After lifting the beam, clean the working surface of the outer mold in time and apply the mold releasing agent, and pay attention to the rust prevention measures when not pouring continuously.

7, the operation platform is strictly prohibited to pile up small objects or other debris, in order to prevent it from falling and injuring people; need to be placed on the platform materials, construction equipment, etc., must be secure, and shall not be placed in excess.