According to the scope of project contracting, project bidding can be divided into general contracting bidding, phased bidding, design and construction bidding, subcontracting bidding and special project contracting bidding.
1, the whole process bidding of project general contracting, that is, the whole process bidding of selecting project general contractor, can be divided into two types, one refers to the whole process bidding of project implementation stage; Secondly, it refers to the bidding of the whole process of project construction. The former is a one-time tender from project survey and design to construction delivery after the completion of the design task book; The latter is a one-time tender from project feasibility study to production. The owner only needs to provide the investment and use requirements of the project and the completion and commissioning period. Feasibility study, survey and design, procurement of materials and equipment, installation and debugging of civil construction equipment, production preparation and debugging are all contracted by a general contractor, which is the so-called "turnkey project". The contractor undertaking the "turnkey project" is called the general contractor. In most cases, the general contractor will subcontract the implementation tasks of some stages of the project.
Whether it is the whole process of project implementation or a certain stage or procedure, according to the composition of construction projects, construction project bidding can be divided into all project bidding, single project bidding, unit project bidding, division project bidding and sub-project bidding. Bidding for all projects refers to bidding for all projects of a construction project (such as a school). Single project bidding refers to the bidding for single projects (such as a teaching building, library, canteen, etc.). ) included in the construction project. Unit project (bidding refers to bidding for several unit projects (civil engineering of laboratory building) contained in a single project. Division project bidding refers to the bidding of division projects (such as earthwork, deep foundation pit engineering, ground engineering and decoration engineering) included in the unit project.
It should be emphasized that, in order to prevent the project from contracting out after being dismembered, bidding for sub-projects is generally not allowed in China, and bidding for special professional projects is allowed, such as deep foundation construction and large-scale earthwork construction. However, the so-called general contracting bidding in domestic project bidding often refers to the general bidding for all single projects or unit projects in the construction process of a project, which is still far from the general contracting referred to in international practice. In order to connect with the international market, improve the competitiveness of China construction enterprises in the international construction market, deepen the reform of construction management system, and build a group of leading enterprises with real general contracting ability, which is an important strategic goal for the development of China construction industry.
2. Subcontracting bidding means that the general contractor who wins the bid, as the tenderee of the engineering tasks within its bidding scope, subcontracts the engineering tasks within its bidding scope to subcontractors with corresponding qualifications through bidding, and the successful subcontractor is only responsible for the general contractor who bids.
3, special project contracting tender, refers to the project contracting tender, which is more complex, or professional, construction and production requirements of a single project for separate bidding:
Second, according to the classification of engineering construction procedures
According to the engineering construction procedure, bidding for construction projects can be divided into pre-negotiation bidding for construction projects, bidding for engineering survey and design, bidding for materials and equipment procurement and bidding for construction.
1. Pre-consultation bidding for construction projects refers to the bidding for the feasibility study task of construction projects. Bidders are generally engineering consulting enterprises. The winning contractor shall provide the feasibility study report of the proposed project to the Employer according to the requirements of the tender documents, and be responsible for the accuracy of its conclusions. The feasibility study report provided by the contractor shall be approved by the Employer. The way of recognition is usually assessment and appraisal by expert groups.
Some project investors lack experience in construction management, so they choose project consultants and construction managers through bidding, that is, when they lack experience in project implementation management, they choose engineering consulting units with professional management experience through bidding, formulate scientific and reasonable investment development and construction plans for them, and organize the implementation of control plans. Bidders of this bidding type, which integrates project consultation and management, are generally engineering consulting units.
2, survey and design bidding
Bidding for survey and design refers to the bidding for selecting survey and design units according to the approved feasibility study report. Survey and design are two different tasks, which can be completed by survey unit and design unit respectively. The investigation unit finally puts forward the investigation report on the geographical position, topography, landform, geology and hydrology of the construction site. The design unit finally provides the design drawings and cost budget results. Design bidding can be further divided into architectural design bidding and construction drawing design bidding. When the construction drawing design is not undertaken by the professional design unit, but by the construction unit, it is generally not subject to separate bidding.
3. Bidding for materials and equipment procurement refers to the bidding for building materials and equipment (such as elevators, power supply and distribution systems, air conditioning systems, etc.). ) required for the construction project after the preliminary design of the project is completed. Bidders are usually suppliers of materials and complete sets of equipment.
4, project construction bidding, after the completion of the preliminary design or construction drawing design of the project, through bidding to choose the winning construction unit. The construction unit will finally deliver the building products specified in the bidding design documents to the owner.
At present, in the bidding practice at home and abroad, all stages in the project construction procedure are often combined to carry out the whole process bidding, which is usually also called general contracting.
Three, according to the industry or professional category classification
According to the business nature and professional categories related to engineering construction, engineering bidding can be divided into civil engineering bidding, survey and design bidding, material and equipment procurement bidding, installation engineering bidding, architectural decoration bidding, production technology transfer bidding, consulting services (engineering consulting) and construction of supervision bidding.
1, civil engineering bidding, refers to the bidding of timber engineering construction tasks in building engineering.
2 survey and design bidding refers to the bidding for survey and design tasks of construction projects.
3. Bidding for goods procurement refers to bidding for the procurement of building materials and equipment required for construction projects.
4, installation project bidding, refers to the construction project equipment installation task bidding.
5. Architectural decoration bidding refers to the bidding for architectural decoration construction tasks of construction projects.
6. Bidding for production technology transfer refers to the bidding for production technology transfer of construction projects. Engineering consultation and construction bidding in supervision bidding refers to the bidding of engineering consultation and construction supervision tasks.
The above is the relevant knowledge about what the bidding scope of engineering construction projects includes. As can be seen from the above, the project construction can be tendered to those units, so that the wrong bidding scope will not affect the completion of the project. I hope it helps you.