The inadequacies of the special construction scheme approval procedure and the corresponding correct practices are as follows: inadequacies 1: the subcontractor submits the special construction scheme to the supervision organization for approval; Correct practice: the special construction scheme shall be submitted by the general contractor to the supervision organization for approval.
Calculate the total time difference and free time difference (unit: week) of work C and work f respectively.
Inadequacy 2: the special construction scheme shall only be signed and confirmed by the technical director of the Subcontractor; Correct practice: the special construction scheme shall also be signed and confirmed by the technical director of the general construction contractor.
In event 3, the calculated construction period is 15 weeks, and the key routes are: a → D → e → h → I.
According to the construction contract of construction project (model text) gf-2017-0201 and construction project supervision contract (model text) gf-2012-0202, the owner has signed the general construction contract and supervision contract with the successful general construction contractor and supervision unit respectively.
In event 4, is the duration claim days proposed by the general contractor Tenable? Explain the reason.
After receiving the accident report, the person in charge of the construction unit shall immediately organize relevant personnel to hold an emergency meeting to quickly find out the cause and responsibility of the accident, and strictly follow the original principle of “four don’t let go” Treatment; After 4h, the accident report of one death was submitted to relevant departments.
The construction unit did not participate in the demonstration meeting.
and the general contractor shall require the project supervision organization to conduct acceptance at 8:30 a.m.
the next day.
Event 4: during the construction of interior decoration project, the actual construction time of work C was 35d due to the design change of the owner.
The wrong practices and corresponding reasons in event 3 are as follows: error 1: organized by the chief supervision engineer; reason: organized by the general contractor..
The general contractor claimed 21d from the project supervision organization on the ground that the design change affected the progress.
Is it correct for the supervising engineer to agree to terminate pile sinking in event 1? What are the usual pile sinking methods for prestressed pipe piles? 2.
Waterproof engineering construction and construction progress control methods are also important test points.
Event 3: within the time required by the supervising engineer, the General Contractor submitted the double code time scale network diagram of the progress plan of the interior decoration project (as shown in Figure 1), and organized the construction according to this after being confirmed by the supervising engineer.
the next day, the general contractor asked the project supervision organization for acceptance, The supervision engineer raises objection to the practice of the general contractor and will not accept it.
After consulting with the construction personnel and experts of all parties involved in survey, design and construction, it is agreed to terminate pile sinking, which shall be signed and approved by the supervising engineer.
It includes a six storey office building project, friction prestressed pipe pile and reinforced concrete frame structure.
Pile sinking method: hammering and static pressure.
During the performance of the contract, the following events occurred: Event 1: after the review of the project supervision organization and the consent of the owner, the general contractor subcontracted the deep foundation pit project to a subcontractor with corresponding qualifications.
We need to not only memorize them, but also learn to use them skillfully.
Event 3: the formwork erection height of the hall on the first floor of the office building is 9m.
A house construction project has a construction area of 28400m2, 2 floors underground and 8 floors above the ground, and a reinforced concrete frame structure.
Is it correct for the person in charge of the construction unit to report the accident in event 2? How many deaths should be reported? What is the principle of “four not letting go” in accident handling? Point out the wrong practices in event 3 and explain the reasons.
Reason: Although the construction period is delayed for 21d due to the design change caused by the owner, work C is non key work, and its total time difference is 3 weeks (21d), and the delay time does not exceed the total time difference, so the construction period will not be affected.
Event 2: during the construction of the secondary embedded casing of the indoor toilet floor, the general contractor used the waterproof concrete embedded casing with the same impermeability grade as the floor.
The total time difference of work C is 3 weeks and the free time difference is 2 weeks; The total time difference of work f is 1 week and the free time difference is 1 week.
Point out the wrong practices in event 4 and write the correct practices.
Improper place and correct method in event 2: improper place: during the construction of secondary embedded casing of indoor toilet floor, the construction general contractor adopts waterproof concrete with the same impermeability grade as the floor Concrete embedded casing.
and 8:30 a.m.
Point out the inadequacies of the preparation and approval procedures of the special construction scheme in event 1, and write out the correct practices.
Before the commencement of the deep foundation pit project, the project technical director of the subcontractor shall organize the preparation of the special construction scheme for the deep foundation pit project, which shall be reviewed by the technical department of the subcontractor, signed and confirmed by the technical director, and then submitted to the project supervision organization for approval.
Correct practice: for the secondary embedded casing, the construction general contractor shall adopt the waterproof concrete embedded casing with a level higher than the floor impermeability grade, and shall be mixed with expansion agent.
Event 2: landslides caused by heavy rain for several consecutive days led to the collapse of the material warehouse, resulting in one person being killed and seven seriously injured.
The supervision engineer requires rectification.
In the safety technical disclosure records before commencement, the disclosure was a full-time safety officer.
In event 4, the claim days of construction period proposed by the general contractor are not tenable.
From the examination trend in recent years, Chapter II project organization and management has always been the highlight of construction case questions.
On the 7th and 32nd days after the accident, one person died after ineffective rescue in the hospital, and the other five recovered and discharged from the hospital.
During construction, the following events occurred: Event 1: during the construction of prestressed pipe pile hammer driving pile, a pipe pile is difficult to sink when the pile end elevation is close to the design elevation; At this time, the penetration has met the design requirements.
Among them, progress, quality, safety and on-site sections are the most important.
[answer] in event 1, the improper organization and preparation of the special construction scheme and the corresponding correct methods are as follows: improper 1: the special construction scheme is organized and prepared by the technical director of the subcontracting project; Correct practice: the special construction scheme shall be prepared by the project leader (project manager of the subcontractor or general contractor).
After the construction of polyurethane waterproof coating, the water storage inspection was carried out from 5:00 p.m.
Improper: after the construction of polyurethane waterproof coating, the water storage inspection shall be carried out from 5:00 p.m.
For the schedule network diagram of event 3, write the calculated construction period and key lines (expressed in work).
The practice of the supervising engineer is incorrect.
Point out the defects in event 2 and write the correct practice.
Correct practice: the water storage test shall be more than 24h.
Event 4: when the supervising engineer inspected the safe and civilized construction on site, he found that there were only three-level safety education records at the company level, branch level and project level.
The demonstration meeting is organized by the chief supervision engineer, and five experts are selected from the expert database of the industry association, of which one expert is the chief engineer of the engineering design unit.
There are 4 classic case questions 01 background information in the first construction “architecture”.
The construction unit has prepared a special formwork construction scheme and conducted expert demonstration of the special scheme in time after approval.
The construction unit considers that the bearing capacity of the pile has met the design requirements and proposes to terminate the pile sinking.
(1) the practice of the person in charge of the construction unit in reporting the accident is incorrect; (2) one death toll should be reported; four not let go principle: do not let go if the cause of the accident is unclear; do not let go if the person responsible for the accident and relevant personnel are not educated; do not let go if the person responsible for the accident is not handled; do not let go if the rectification measures are not implemented.
02 background information a new industrial plant is located at the foot of the mountain, with a total construction area of 16000m2.