There are various types of construction materials and installation materials, which increases the difficulty of project management, especially the complexity of construction materials and installation materials.
To control the responsibility cost of the construction project, we must first grasp the key link of “material cost”.
As the single line diagram is intuitive and easy to understand, it can accurately calculate the required materials and accessories.
According to the characteristics of installation engineering materials, class a materials with large demand, large occupation of funds, special materials or difficult material preparation must be carefully reviewed item by item in strict accordance with the design and construction drawings to ensure that the specifications, models and quantities are completely accurate.
The construction estimation made by this method can control the first pass of on-site material cost management.
Therefore,.
2、 Material ABC classification method is used for material evaluation and review.
The construction project is the cost center of the construction enterprise, and the material cost accounts for a large proportion in the construction and installation project cost.
5、 Timely and completely handle visa and change procedures.
For the changes orally notified by the owner, the project management department shall take the initiative to handle the engineering change letter, which shall be signed and confirmed by the owner’s representative, which not only reflects the customer-oriented service consciousness, but also does not damage the interests of the enterprise.
4、 Carefully arrange monthly and ten day material requisition plans, implement quota material requisition, and carefully arrange phased material requisition plans according to construction procedures and project image progress, which is not only an effective measure to ensure the continuity of construction period and operation, but also an effective measure to make good use of working capital, reduce inventory and strengthen material cost management, especially in the case of difficult capital turnover.
At the same time, the quota material requisition shall be strictly implemented, and the quota material requisition for completing the construction task shall be attached in the construction assignment, which shall be used as the control basis of the material issuance department to prevent the unplanned use of materials such as wrong issuance and indiscriminate issuance, so as to achieve the “targeted” of materials from the source.
It is necessary to prevent “false return of materials” from being regarded as an “air raid shelter” for adjusting the responsibility cost accounting and assessment of construction projects, and artificially fabricate materials, resulting in out of control of material cost management.
The specific operation must be realistic and strict.
“False material return” means that the construction project at the end of the month will not return the materials that have been received but still need to be used in the next month, but prepare the material return sheet of this month and the material requisition of the next month at the same time.
Before receiving the engineering change notice for implementation, the project management department shall have the disposal opinions on the backlog of materials caused by the change.
For class C materials with less capital occupation, less demand and less importance, a relatively simple coefficient adjustment method can be used to excavate them.
In addition to classifying the specifications and models, pay attention to the material number for reuse..
The specific implementation to the project management department is how to make great efforts in improving the accuracy of construction material estimation, reducing material consumption, eliminating waste and reducing inventory backlog, so as to save costs and improve economic benefits.
Not only the main materials, but also the estimated materials of all auxiliary materials must also have calculation basis and calculation process.
Material a, B and C classification method is a method of enterprise material classification management.
Engineering changes often lead to overstock of materials, which is caused by material preparation before change.
3、 In terms of installation engineering, the main disciplines include equipment, electrical, piping, ventilation, metal structure fabrication and installation, etc.
This can reduce the handling of material return and picking, and facilitate the common method to formally reflect the actual material consumption of the current month.
In principle, it shall be purchased by the owner.
Therefore, from the perspective of construction material management procedures, we should focus on six key points: first, implementing the construction material estimation method of single line diagram, and construction material estimation is the primary link of material cost management of engineering projects.
Otherwise, if it is not handled properly, it will cause the backlog of materials and increase the cost of materials for no reason.
The on-site construction Department of the project must accurately grasp the progress of the project, continuously improve the coordination ability and prediction ability, and timely find and deal with the progress problems of on-site construction.
In addition to being familiar with the construction drawings, understanding the design ideas and making technical quality disclosure to the construction team according to the procedures and specifications, the construction technical management personnel must also instill their own intention of construction material estimation into the construction department on the project site, and make material disclosure in the form of single line diagram, so as to prevent the team from cutting materials for a long time, short use of materials, petty use of whole materials and “inferior” use of excellent materials, so as to make the best use of everything, Eliminate waste, reduce leftover materials and minimize material consumption.
In addition, with the improvement of laws and regulations, it should be noted that the owner’s on-site representative must have legal authorization and can be confirmed by both parties through the meeting minutes or documents of the coordination meeting, so as to ensure the effectiveness of engineering change visa.
The recovery of leftover materials is the final link that can not be ignored in the material cost management of the construction project.
Engineering design change and additional visa will often occur in project construction.
For class B materials such as general main materials in intermediate status and auxiliary materials with medium capital occupation, the material estimation is generally determined according to the conventional calculation formula and budget quota content.
At the same time, due to the different nature and purpose of the project construction, the technical quality requirements and the use of materials of the construction project are also different.
The so-called single line diagram is a single line schematic diagram drawn based on the process flow or system diagram of the project and according to the layout of plane and section and spatial trend.
Taking the pipeline discipline as an example, the straight pipeline length, material, specification, model and quantity of pipe fittings according to the plan and section construction drawings shall be marked on the single line diagram.
When applied to construction and installation enterprises, as the audit of construction material estimation of engineering projects, it is to divide all kinds of materials used in construction into three categories A, B and C according to their demand and amount of funds, combined with important procedures, and adopt different methods when auditing and estimating materials.
6、 Seriously deal with “false material return” and leftover material recovery.
In particular, for the consumption of materials that have only been manufactured but not installed in the project construction, the cost of some materials shall be appropriately discounted through handling the “false return” procedures to achieve a relative balance of revenue and expenditure.
