High formwork support system refers to the formwork support height of concrete components on the construction site of the construction project exceeds 8m, the erection span exceeds 18m, or the total construction load is greater than 15kn / ㎡,

Or formwork support system with concentrated line load greater than 20KN / m. There should be a special scheme for the construction of tall formwork, which needs to be demonstrated by experts in principle. According to the current specifications, those with a total construction load of more than 10kN / ㎡, a concentrated line load of more than 15kn / m or a beam cross-sectional area of 600 * 1200 are already tall formwork works.

1、 The notice of JZ [2009] No. 87 document of the Ministry of housing and urban rural development, safety management measures for divisional and subdivisional works with high risk, states: ① the erection height is 5M and above; Erection span 10m

And above; Total construction load 10kN / m2 and above; Concentrated line load 15kn / M and above; The concrete formwork support works with height greater than the horizontal projection width of the support and relatively independent unconnected members are divisional and subdivisional works with high risk. (Note: "this does not require expert demonstration"). ② The erection height is 8m and above; Erection span 18m and above; Total construction load 15kn / m2 and above; Concentrated line load of 20KN / M and above is "divisional and subdivisional works with greater risk exceeding a certain scale". (Note: "such needs expert demonstration").

2、 The Ministry of housing and urban rural development's JZ [2009] No. 254 document, guidelines for construction safety supervision and management of high formwork support system in construction projects, states that high formwork support system refers to construction

The formwork support system of concrete components at the construction site has a height of more than 8m, a span of more than 18m, a total construction load of more than 15kn / ㎡, or a concentrated line load of more than 20KN / m.

3、 The construction unit shall, in accordance with the current relevant national standards and specifications, organize relevant professional technicians by the technical director of the project, and prepare the special design of the high formwork support system in combination with the actual situation of the project

A construction scheme. It can only be implemented after expert demonstration.