For example 1, the flow construction plan of a divisional project is shown in the figure below
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For example 2, the flow construction plan of a divisional project is shown in the figure below
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Example 3: a factory needs to build the foundation engineering of 4 sets of equipment
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The construction process includes foundation excavation, foundation treatment and concrete pouring
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Due to different equipment models and foundation conditions, the construction process of the four equipment (construction section) has different flow rhythm (unit: week), as shown in the table below
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It can be seen from the characteristics of flow rhythm that the construction of the project should be organized according to the non rhythm flow construction method
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(1) Determine the construction flow direction from equipment a → B → C → D, the number of construction sections M = 4 (2) determine the number of construction process n = 3, including foundation excavation, foundation treatment and concrete pouring
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(3) The “accumulated sequence dislocation subtraction large difference method” is used to calculate the flow process step: (4) calculate the flow process construction period: T = ∑ K + ∑ TN = (2 + 6) ten (2 + 3 + 2 + 3) = 18 (weeks) (5) draw the non rhythm flow process construction schedule, as shown in the figure below
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Summary of flow construction principle: the basic formula of flow construction period calculation t = ∑ K + ∑ TN + ∑ Z + ∑ G – ∑ C, we should understand this formula in the flow construction progress chart, understand the significance of the chart, and get good points when doing flow construction problems in the future
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As shown in the first step of the figure above, the sum of the steps of ∑ K flow is calculated
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In the rhythmic flow construction, the flow step distance between each construction process is well obtained from the topic; in the non rhythmic flow construction, the flow step distance is calculated by using the “accumulated sequence dislocation subtraction big difference method”, which is often tested in the examination, and must be well understood
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Like the orange part in the picture
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The second step is to calculate the sum of flow rhythm of the last construction process of ∑ TN in each construction section
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In the title, we usually provide the flow rhythm of each construction process and construction section
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We only need to extract the flow rhythm of each construction section of the last construction process and add it up
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Mark the part in the picture
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The third step is to calculate the organization interval time, process interval time and advance insertion time
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In the title will directly tell you the value of these, organization and process time plus, advance insertion time is minus
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As shown in the blue part of the figure, the flow construction period can be obtained by adding and subtracting the above time..
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