4. An office building project, with a construction area of 120,000m2, 2 floors underground, 22 floors above ground, reinforced concrete frame shear wall structure, contract construction period 780 days. The foundation uses pile foundation and box foundation. The engineering piles

4. An office building project, with a construction area of 120,000m2, 2 floors underground, 22 floors above ground, reinforced concrete frame shear wall structure, contract construction period 780 days. The foundation uses pile foundation and box foundation. The engineering piles are the foundation of the mud wall-protected drilling pile, with a pile diameter of 1000mm and a pile length of 35m, with a total of 260 pieces.

foundation base plate thickness is 2000mm, C40&P8 anti-seepage concrete is used, and the construction ambient temperature is 29℃. The top floor of the office building is designed with a large conference hall with a floor height of 5.4m and the spacing between the frame columns of the conference hall is 8m×8m.

A construction general contractor participated in the bid for the project according to the bill of quantities provided by the construction unit and other bidding documents, and won the bid with a quotation of 95 million yuan. The two parties signed a general contracting contract for engineering construction in accordance with the "Construction Project Construction Contract (Model Text)".

Contract stipulates that this project adopts a fixed unit price contract pricing model; when the actual project volume increases or decreases more than 5% of the list project volume, the contract unit price will be adjusted, with the adjustment coefficient being 0.95 or 1.05, and the comprehensive unit price of the total cost of steel bars and earthworks in the bid quotation is 5,800.00 yuan/ton and 32.00 yuan/m3 respectively. During the performance of the contract, the following events occurred:

Event 1: After the construction unit entered the site, the temporary facility floor plan layout diagram prepared based on the actual situation of the temporary land provided by the construction unit, see the figure below:

Event 2: The project department of the general contractor reviewed the list project volume. Among them: the actual project volume of steel bars is 9600.00 tons, the steel bar list project volume is 10176.00 tons; the actual project volume of earthwork is 30240.00m3, and the earthwork list project volume is 28000.00m3. The general contractor submitted a project price adjustment report to the construction unit.

Event 3: During phased settlement, the total cost will be adjusted according to the value adjustment formula method based on labor costs and four main materials and price indexes. The proportion, benchmark and current price index of each value adjustment factor are as follows:

Event 4: After the completion acceptance is passed, the general contractor and professional subcontractor will transfer the project information of their respective construction scope to the supervision agency. After the supervision agency sorts out, the construction information and the project supervision information will be transferred to the local urban construction archives management department, and the urban construction archives management department will reject it on the grounds that the information transfer procedure is incorrect.

Event 5: Due to the narrow construction site, the on-site road is considered 3m and also used as a fire lane. The roadbed is compacted, 150mm thick sand and gravel is laid on it, and a concrete surface layer is made. Mixer sheds and sand and gravel can only be stacked between the gaps between them and the construction projects. Two fire hydrants were arranged on site, with a distance of 100m, one of which was 4m away from the proposed building and the other was 2.5m away from the temporary road. "Five Brands, One Picture and Five" was set up on site, and the on-site dormitory was set up with openable exterior windows, 3 floors of beds, and the passage width was 0.8m. The indoor height of the dormitory is 2.1m, and there are 18 residents in each dormitory.

• Question 1: In order to meet the needs of the construction project, what purpose should A and B be set in the figures and explain the reasons.
• Question 2: In event 3, how much should the actual calculated price of the column calculation adjusted? (Accurate to 2 decimal places)
• Question 3: In Event 2, can the prices of steel bars and earthworks of the general contractor be adjusted? Why? How many yuan is the adjusted price calculated by list? (Retain two decimal places)
• Question 4: points out the correct transfer procedures for engineering materials of general contractors, professional subcontractors, and supervision units respectively.
• Question 5: points out the inappropriate layout of the site and writes out the correct approach. What does the "five cards and one picture" on the spot refer to? What requirements does the site selection of temporary housing on site meet? What is wrong with setting up the on-site dormitory in this case? Write out the correct way.
• Question 6: The general contractor has purchased material materials according to the contract requirements and prepared the material procurement contract rules of the general contractor. Please explain what key points should the general contractor's material procurement contract be managed? (At least five answers)

• Welcome everyone to study and discuss together. The answer is revealed after 8 o'clock tomorrow morning.