ApplicationandpracticeofBIMinthefieldofhomeimprovementflower decoration

BIM in the field of home improvement, who is the target user, what problems are solved, and how can it be implemented… It seems that each company has its own focus and considerations. In the process of landing, there will always be various difficulties and problems. This article shares my thoughts and practices on the implementation of BIM in the field of home improvement, hoping to help you.string lights

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The topic I want to talk about today is actually It is BIM in the field of home improvement. How should I put it? In fact, the industry has been researched and developed for a long time, but it seems that I have not seen some particularly successful things. Who is it aimed at, and what problems does it solve? What value can it bring, and how can it be implemented? It seems that each company has its own focus and considerations, and each company has different expectations for it.string lights

In the process of landing, there will always be various difficulties and problems, so some very strange phenomena have also arisen. It seems that everyone thinks that the future of home improvement lies in BIM, but it does not. Anyone know why in BIM and what is it good for? Is it a piece of chicken ribs, tasteless to eat, and a pity to abandon?string lights

For me, as a product with better luck, fortunately to have implemented BIM, and has been running stably for a few years, I also hope that through my own sharing of this matter, I can share my understanding of this matter. If it can bring you some new ideas and inspiration, it would be the best.string lights

I. What is BIMstring lights

BIM (Building Information Modeling) technology is a data-based tool applied to engineering design, construction and management. The integrated model is integrated, shared and transmitted in the whole life cycle of project planning, operation and maintenance, so that engineering and technical personnel can correctly understand and efficiently respond to various building information. The construction entities of all parties provide the basis for collaborative work and play an important role in improving production efficiency, saving costs and shortening construction periods. ——Baidu Encyclopediastring lights

BIM, Building Information Modeling (Building Information Modeling), actually comes from the field of construction. Just to say that in the field of home improvement, interior design is also gradually shifting from 2D CAD drawing to 3D tool-aided design in the industry. In the initial stage, it is actually just to present the design effect, so that users can intuitively feel their future home. What will it look like.string lights

Later, because it is naturally a 3-dimensional design, there are naturally some data-based content, such as house type, space, area and other information, based on the data-based development process of the industry itself, for calculation, Pricing and so on gradually have their own demands, and slowly began to have BIM in the field of home improvement. In fact, the definition of BIM itself in the field of construction has already determined what the future of BIM will look like, but different companies have their own priorities. I will elaborate on this later~ OK, after understanding the concept of BIM, Lets take a look at what kind of tool BIM is.string lights

Second, what kind of tool BIM isstring lights

Here, I will briefly introduce it. Everyone knows the cause and effect, so I won’t do in-depth discussion and analysis (because once the analysis is Its a huge and long article, and Ill write it later when Im in the mood, ahem). In the industry, several well-known software tools are probably Kujiale, 3D Home, Every Ping Every House (original lying flat), Dressing Home, etc., as well as some self-developed BIM under Shell, such as Shishis future home etc. Among these tools, Kujiale should be the most well-known, because it is not only open to the B-side, but also to the C-side. This reason also promotes its own iteration and popularity. These tools, because of their different focus, can be roughly divided into the following two types:string lights

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Lets talk about the types of these tools. First of all, these tools must be a design tool. Because design is the upstream of the entire home improvement, without design, there is no way to talk about all the calculations, drawings, delivery and the like. So, design tools have always been the core of these types of tools before, I dont care if I can implement them later, now I have to look good first, right? So at the beginning, everyones energy will be on how these tools can better promote conversion.string lights

Slowly, some companies began to think, since the design has been digitized, what materials are used in the design process, how many materials are used, how many main materials, and how many auxiliary materials, these dosages are Can’t it be digitized? If these quantities can be digitized, does that mean that the quantities in BIM can be used as the basis for the calculation of the entire project? (You know, most of the entire industry is still picking up CAD by hand and using calculators to calculate the amount.)string lights

So slowly began to appear some tools that focus on delivery tools, with calculation as the core , the main point is that all the dosages are calculated by the system, reducing the error and deviation of manual calculation. Of course, it seems that each tool now has a team responsible for delivery such as calculation, but the difference in the bottom layer will inevitably bring about the difference in the upper layer. Sometimes the lack of the underlying structure will also cause some calculations to be completely uncalculable. . However, these will be discussed in more detail later.string lights

So what kind of tool should it be for BIM?string lights

In fact, the above discussion has been relatively clear. According to the concept of BIM itself and the development track of tools in the home improvement industry, the future of BIM is likely to be a set of design + delivery with calculation as the core. tool. That is to say, the bottom layer should be built according to the structure that can support the calculation, and at the application layer, it should be able to fully support the design itself and be a good design tool~string lights

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Three, problems in home improvement businessstring lights

Before we talk about what problems BIM can solve, we must first talk about What problems exist in the actual home improvement business. Under normal circumstances, the three major problems are more prominent, namely personnel efficiency, material cost, and project profit.string lights

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Why do we say there are these three problems? Let’s take a look (here is a brief talk about the problems that BIM can solve, and cannot cover all possible problems).string lights

1. Personnel efficiency issues

At present, the quotation information of the entire home improvement industry needs to be manually calculated and filled in by designers. Hour. This is only in the quotation, as well as the communication of its own plan, the drawing of drawings and so on. Designers are the core conversion members of the contract. If the system can improve the work efficiency of designers, it means that designers will have more time to receive and convert more customers.string lights

2. Material cost issue

Due to the amount of materials involved in the decoration process, it is completely calculated manually and then entered into the system. In this process, the estimation of the loss is different (for example, A believes that 8% of the loss is enough, and B believes that 12% is needed); the choice of self-interest (such as placing more materials to avoid later replenishment) and so on.string lights

You will find that for the same client, the same set of plans, and the same materials, different designers will definitely report different amounts of materials. In some extreme cases, there may still be a 60-square-meter house and a 200-square-meter floor; some construction sites will have material problems such as hundreds of sockets. Material costs are extremely uncontrollable. Even if many enterprises still have a layer of central control for auditing, it is still difficult to completely avoid them. Moreover, on the basis of the inaccuracy of manual calculation of materials, there will be more returns and replenishments in the later period, which will also increase the cost even more.string lights

3. Project profit problem

In terms of the profit of the entire project, the gross profit margin of most projects is about 20%-30%, which basically means that they cannot make ends meet. The cash flow is very good, and at the end of the year, when the accounts are settled, it is found that it is not profitable. Ahem, when the increase in traffic is considerable, the problem may not be too big. After all, there is a very high-quality cash flow, but once there is a decrease in the increment, how to refine the operation and reduce it as much as possible in the entire project Expenses and cost savings have become a very important issue.string lights

Fourth, the problems that BIM can solvestring lights

Can BIM solve the problems mentioned above? Hey, but its not enough. After a careful study of BIM tools, you will find that there will be completely different experience improvements at the quotation level, the calculation level, the experience level and the drawing level, and this whole set of experiences actually brings about a major impact on the entire design and delivery behavior. change.string lights

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1. Quote level

BIM As a 3D design tool, the structure, area, space information and material information of the space are all available, so you can directly generate the users quotation from the BIM tool. By the way, there are many nonsense words here. Now the underlying logic of the quotation function design in the home improvement industry is how people can complete the quotation when they make quotations, and there are no missing items.string lights

So all top-level designs will be done around this underlying logic. No matter how many quotation systems you see, they are doing things based on this underlying layer. When we access 3D design tools, can we change the perspective and whether designers can stop making quotations, and let the system do it. When the perspective is different, you will find that the top-level design will be completely different. Cough, I wont extend it here for the time being.string lights

Also, the quotation is a form. Ahem, this industry has been around for decades, and its already 2202. Can you consider changing the form, such as graphics or something. How to convey the basic information of decoration to users more clearly and easily can actually be considered from another angle. How to do it, how many difficulties there are, how to solve the difficulties, lets not talk about it for now, there is a lot of nonsense, ahem, dont blame it.string lights

2. Calculation level

BIM, 3D design tools, basically all materials and construction can be directly calculated by the system. Since it is completely generated according to the system rules, as long as the design scheme is accurate, the dosage will naturally be accurate. The influence of human factors can be completely shielded. At the same time, these data can also be used for subsequent contract issuance and ordering (cough, of course, it is not bad at all and unrealistic, some small deviations, the flaws do not hide the advantages, and do not affect the overall situation).string lights

3. Experience level

BIM itself is a 3D design tool, that is, after the scheme is completed, users can directly experience 3D roaming experience, and even experience VR through wearable devices. That is what you get. It is no longer necessary to rely solely on 2D drawings to imagine. How your home will be in the future, and whether you are satisfied with yourself, is completely visible. For users with weak spatial imagination, this is a huge boon.string lights

4. Drawing level

BIM itself will also generate a full set of construction drawings according to the designers plan, which can save a lot of CAD drawing time (this depends on the development stage of the tool, some Tool support, some tools do not support, some tools only support part).string lights

When all these levels change, you will find that this is a major change in data generation and transmission behaviors such as design behavior, quotation behavior, contracting behavior, settlement behavior, etc. The design does not need to be carried out in CAD, the user does not need to rely on their own brains to imagine the future home, the quotation does not need to be made, the system generates one-click generation, and all the material consumption is generated according to the system rules, abandoning the deviation caused by human factors, construction drawings Automatic generation, subsequent outsourcing, placing orders based on accurate usage, and corresponding credentials for payment and settlement.string lights

V. Product stratification in the home improvement industrystring lights

Since BIM is so good, where is it? What is the important role? Before talking about the location, let’s talk about the overall home improvement business. From the bottom of the product, the whole can be roughly divided into five layers, namely the business layer, the data layer, the budget layer, the payment layer, and the settlement layer.string lights

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The five levels face different problems and provide their own Solutions, the overall business system of home improvement is also constructed based on these five layers.string lights

1. Business layer

The business layer mainly provides home improvement full-chain business-side solutions, and is also the most important layer. All business processes and logic can be classified into this layer . The overall structure basically includes the following parts: call center, sales center, customer center, intelligent delivery center, contract center, order center, delivery center, supply chain center, financial center, after-sales center, intelligent equipment center, etc. It basically covers the business content of the entire chain of the home improvement industry, and all business data is processed in this layer.string lights

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(Haha, let’s sell it here first, The content is all coded for the time being, and there should be a series dedicated to all the frameworks and content of the business layer. It should be, I hope it will not be two years later~ )string lights

2. Data layer

The data layer mainly refers to the construction data, material data and other information in the decoration project. This part of the information includes not only the users quotation, but also the outsourcing and order information (business) to the downstream ports. The business data of the layer is processed in the business layer, not in this layer). This level mainly deals with the full data of all units and home decoration from the beginning of design, including construction project data and material data, as well as all later change data, which runs through the whole process of home improvement, and this part is also used in most companies and enterprises. It totally needs to be handled by people.string lights

Calculation of all consumption, calculation of quotation, changes during construction, and return and replenishment later, this is also the most difficult part of the chain to control. Its a little bit like that, it seems that no money is spent everywhere, but it is a sense of sight that the money has been spent. As a BIM tool, it also exerts its greatest value in this layer. All data is output by BIM, and the downstream is executed according to the upstream data, so as to avoid the data risk in the process to the greatest extent.string lights

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3. Budget Layer

Budget The tier is primarily used to measure projected revenue, projected expenses, and budgeted gross margin at the project level. It is the most critical part of the overall project budget. Whether this project can make money, how much money can be made, what is the gross profit rate, whether it can cover all costs, whether I can make a profit or not, these questions cannot be known until the project is over, but must be predicted in advance.string lights

And make the final accounts as close to the budget as possible. This part mainly involves the content of the project, the cost structure of the background, the tax rate relationship and so on. It is necessary to make accurate estimates based on the data provided by the data layer. In this way, the income, cost, value-added tax, additional cost and gross profit margin of the overall project are directly foreseeable before the project starts. The accuracy of this layer depends on the accuracy of the data layer, so whether the data in the data layer can be done well or not depends on whether the data in the budget layer can be done well.string lights

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4. Payment Layer

Payment The layer mainly provides user payment solutions, including WeChat payment, Alipay payment, POS machine payment, cash collection, public transfer and so on. The payment link spans the entire user life cycle, especially in the home improvement business, where the project cycle is relatively long, the frequency of payment (deposit payment, initial payment, change payment, mid-term payment, and final payment) is relatively large, and the payment amount is relatively large ( Most of them will exceed the limit of 50,000 for a single online payment), the payment methods are more variable (online payment, POS machine payment, transfer, etc.), and the payment logic and scenarios are also more complicated. How to better handle the users payment scenario is perfect Connecting your own business system requires more effort.string lights

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This picture basically introduces the industry payment The key information of this piece, there should be a special article about this piece later, so I wont expand it one by one here. As for why WeChat and Alipay have both online payment and offline payment, the main point here is to distinguish whether automatic online reconciliation can be performed. Re-subscribe online to the corresponding project, this is considered offline payment.string lights

5. Settlement layer

This layer is relatively downstream and is also narrowly defined settlement. It mainly provides solutions for project settlement and supplier settlement, that is, it mainly solves how to provide corresponding services billing issues. In fact, there is not much to say. It is relatively simple. When the upstream data is complete, it is relatively easy to handle. It only needs to be implemented according to the settlement rules, account period and settlement method. Most of them initiate settlement and approve settlement. Yes accounts, payments, etc. The only thing that needs to be considered is to cover as many abnormal scenarios as possible, so that a complete closed loop will be formed, and the system will not be able to perform normal settlement due to behaviors, expenses, and deductions in some special cases.string lights

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6. Position of BIM in home improvement businessstring lights

The basic division and concepts of the five levels have been clearly described above, so the position of BIM in the entire business is clearly visible. BIM provides complete and accurate original data at the data layer. Through the transformation of product rules (package rules) at the business layer, user-oriented quotations and change orders are formed, as well as contracting orders for construction parties and contracting orders for suppliers. . Throughout the entire business process, it provides accurate and complete data support for the budget layer, payment layer and settlement layer.string lights

And these documents, the representative income for the user and the representative expenditure for the service provider, will also generate a budget bill, which means that when a decoration project starts, it can be very clear. Knowing the projects revenue, cost, and profit margin, so as to provide an accurate reference for the subsequent progress of the project.string lights

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After chatting for so long, we can finally start chatting How is BIM applied and practiced, ahem, five thousand words to get to the point, it wont be beaten~string lights

VII. The framework structure of BIM applicationstring lights

The above is very detailed I talked about the product layering of the home improvement business, and also explained the position of BIM in this layered structure. Then, how to plan and implement BIM in the entire business system. In fact, through the above content, we can roughly sort out the data flow structure of BIM in the entire home improvement business system.string lights

Acquire basic data from BIM, transfer it to the package rules of the business layer, convert and output, and output quotations and contracts. The direct relationship between sales and cost relies on the underlying data for splitting and association. In this way, all income and expenditures are introduced into the financial system, and the budget and final accounts are completed.string lights

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VIII. Three major problems in the BIM frameworkstring lights

In this structure, there are three core problems: BIM data problems, abstraction of quotation rules and outsourcing rules, and the conversion relationship between sales and costs. These three problems are precisely the same The key point of the flow and connection of the entire system structure, that is to say, as long as these three problems can be solved, the overall product solution can be implemented.string lights

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Now that the core problem is located, then what to do next The only thing is to solve it one by one.string lights

1. BIM data problem

BIM data problem determines what kind of data BIM will transmit to the business side, and what type of data the business side needs to receive. How to define the format of data, how to isolate BIM and business system, achieve low coupling, and connect through data channels at the same time. There are still two problems to be solved here: what data can BIM provide, and what format is the data required by the business side.string lights

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This will involve two parts, what can BIM provide type of data, and what kind of data is required by the business side. What kind of data is needed on the business side cannot be solved here, because what kind of data the business side needs can only be known after abstracting the rules. The process of product realization is the process from the bottom data to the superstructure, but in the product conception stage, it is the process of splitting from the top structure to the bottom data.string lights

The two are completely opposite, so this question will come to the next node. This time we will talk about what type of data BIM can provide. As for the BIM tool itself, I won’t talk much about it. Once I talk about it, it will be another long article. I will wait for it later, ahem, I won’t write it, and the tool is tiring. . . Although I am not going to talk about BIM here, how can you know what kind of data BIM can provide? It needs a little research, hehe~string lights

In fact, you don’t need to study very carefully, just… …Put down its entire functional structure, basically, you can roughly understand how his data structure and underlying logic are handled, ahem, is it very simple.string lights

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Because the tool itself has the structure of the front-end application and the management background , so dont miss it when digging~ The front-end structure is mainly used to understand the atomic data of the basic nature, and the back-end structure is mainly used to understand the underlying data support and structure, both of which are indispensable. The data of the front-end structure and the data of the back-end structure are as shown in the figure below. I wont go into details about which one belongs to, but see for yourself. Limited to the structure diagram is too… long, so only a small part is intercepted.string lights

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So, when you finish the overall structure of the BIM tool, you will find that BIM itself provides atomized data, which can provide Your very accurate underlying data, such as the area of the unit, the structure, the name of each space, the length, width and height of the space, the space area, the space perimeter, the height, width and thickness of the door, etc. atomic data, so how can these data become business The data that is actually available depends on what kind of data structure the business side needs. Thats what we need to talk about in our next question.string lights

2. The abstract problem of rules

We talked about earlier that after BIM data is transformed by rules, it will be transformed into quotation data and outsourcing data. Quotation, one for the downstream for outsourcing. Therefore, the abstraction of rules is actually the abstraction of two sets of rules. That is, the abstraction of product quotation rules and settlement rules to service providers.string lights

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Let’s talk about the quotation rules first, the quotation rules should be regarded as the most Its hard to crack, because in this field, there are quotation rules, its a manual, and its a thick one… I cant do it, I can only use the old method, which is also a stupid method, and it may be the most efficient method. down, and then distill and abstract the core rules from a bunch of rules. The rules of the product manual generally include several main parts, namely, pricing rules, main material configuration, upgrades, limit rules, hydropower site rules and personalized construction project rules.string lights

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In any complex structure, there must be one or Several rules, which are the core of the whole structure, support the free operation of the whole structure. What we need to do is to dissect the appearance and strip out the most essential rules among the complex, redundant, and massive factors with great interference. This will also be the core point of our breakthrough, and only a point can break through.string lights

I wont describe the specific process. If you dont have a deep understanding, cough, you can contact me, I will give you a manual, you can peel it off and try it yourself, dont worry, dont need money, cough ~string lights

This is just the conclusion. After pulling out all the rules, I found the most core rule. This rule is the core of the product quotation: in the XX space, the XX material / Is the construction item standard? Still upgraded? still loaded? Will the classmates in the industry feel that they are very similar to what they are doing now~ Although they are similar, but many things are very different… I hope my approach can give you some new inspiration.string lights

Here is a brief explanation. For general home improvement industry package companies, home improvement fees are charged according to the area of the house, such as 999 yuan/square meter, so the standard here means that no extra money is required. , included in the package. Upgrade means that it is not included in the package, but you can make up the difference to upgrade. For example, when you want to use better floors/tiles, you can make up a difference. If it is loaded, it means that it is not included in the package and needs to be purchased at the full cost.string lights

Under this rule, you will find that most (80-90%) scenarios can be covered, and it will directly determine the format of the BIM data required by the business.string lights

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Based on this core rule, not all The rules can be satisfied, so a batch of other special rules are needed to supplement. Including the rules of water and electricity points, the rules of superelevation/superwidth/superthickness of doors, the rules of super-thickness of gates, the rules of super-thickness of window covers, the rules of special-shaped floors/aluminum gussets, etc. Together, these rules will support the automatic generation of the entire quotation system.string lights

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After the quotation rules are abstracted, how to abstract the settlement rules It is used to decide how to issue a contract. This set of rules is relatively simple. The core is actually the issue of selling price and cost. Then, there will be some package pricing for the project, such as how much the construction part will be paid to the workers, which is relatively simple.string lights

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3. Billing conversion issues

Finally, let’s talk about the issue of settlement and conversion. This thing mainly defines the relationship between sales and cost. It looks relatively simple, but it is actually relatively simple, ahem~ There will only be some special scenarios, so it will be managed through SKU as normal The relationship between sales and cost is not the same. Take a simple chestnut and everyone can understand.string lights

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So, after reading the above picture, it is not difficult to understand, Why do you need independent relationship processing? Because the transformation relationship is not exactly the data transformation of the same unit, but the data transformation of different units. After talking about this, you can probably understand why in the frame structure of BIM application (dont ask where the frame is? Turn up, cough~), three separate libraries will be taken apart to process the content. As for warehousing, because it also involves the content of inbound and outbound warehouses and the content of purchases, it is not necessarily a one-to-one match, so the warehousing part is also split into warehouses independently for independent management.string lights

IX. BIMs landing product planstring lights

We talked so much and talked about how to solve so many problems, so what will the actual landing plan look like? Im very curious, the following will be the heavyweight content, haha, look forward to it. We talked about all the frameworks, structures, problems to be solved, and how to solve them, so let’s take a look at how they are implemented in the system~string lights

1. Functional structure diagram

Before it starts to land, it is definitely necessary to sort out the functional structure, although the above has actually been discussed.string lights

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2. Data Flow Diagram

Then there is the flow chart in the data transmission process, which is used to more clearly represent the data process.string lights

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3.BIM data scheme

The data format that BIM needs to provide has been defined above as, space/construction item, material/consumption, then BIM tools need to provide this type of core data, and also need to provide BIM basic space and other information data.string lights

1) Basic project and plan datastring lights

Includes basic project, plan information, the unit structure and basic content.string lights

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2) Construction, material datastring lights

Detailed construction and material data information is also the core information. The business rules will generate relevant quotation data and settlement data according to this part of the content.string lights

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4. Abstract scheme of rules

The abstract core of rules is the refinement of various rules. The above core rules and branch rules have been discussed almost, and the following is the specific product plan. The abstraction and refinement of the rules is divided into 8 steps, which are: package rule management, package commodity management, commodity rule management, additional rule management, dismantling package management, water and electricity package management, supplementary quotation management, and outsourcing management.string lights

1) Package rule managementstring lights

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