In previous chapters, we've thoroughly examined the material properties and installation techniques of MCM soft stone. But anyone in the construction industry knows – the final decision always comes down to the numbers.
When selecting materials, many people focus only on unit material prices and installation costs. After a quick calculation, they conclude that MCM soft stone is significantly cheaper than natural stone – and that seems good enough. However, the most easily overlooked cost saving comes from the reduction in structural load that lighter exterior cladding brings to the building's main structure. At the same time, the differences in material unit prices and installation costs aren't as dramatic as some earlier estimates suggested.
In this chapter, we've recalibrated every cost item to a reasonable range and run the numbers again.
I. Structural Cost Savings: RMB 20–25 Per Square Metre – Free Optimization Potential
Every building's exterior decorative cladding ultimately transfers its own weight to the main structure – beams, columns, shear walls, floor slabs, all the way down to the foundation. When structural engineers perform load calculations, the permanent load from exterior walls is a critical input parameter. According to China's "Load Code for the Design of Building Structures" (GB50009‑2012, Clause 5.1.1) , the self‑weight of exterior cladding must be included in the permanent load at its actual weight.
Natural stone cladding (dry‑hung): Stone self‑weight is approximately 50‑70 kg/m²; adding the sub‑frame and anchorage system brings the total load to approximately 80‑100 kg/m².
MCM soft stone: Material self‑weight is only 3‑8 kg/m²; adding the adhesive brings the total load to approximately 5‑10 kg/m².
The difference between the two is approximately 70‑90 kg/m².
This difference does offer some optimization potential in structural design. However, it is important to note: exterior wall load is only a small fraction of a building's total load. A high‑rise residential building's total permanent load includes structural self‑weight (beams, slabs, columns, walls), floor finishes, internal partitions, exterior cladding, mechanical and electrical services, and more. Exterior cladding typically accounts for only 5%‑10% of the total permanent load.
How Much Can Structural Cost Actually Be Reduced? Let's Run the Numbers.
Project Basic Parameters:
Total Floor Area: 100,000 m²
Storeys Above Ground: 28
Structural System: Shear wall
Seismic Fortification Intensity: 7 (0.10g)
Basic Wind Pressure: 0.45 kN/m²
Baseline Steel Reinforcement Content:
Based on industry data, steel reinforcement content for high‑rise shear wall structures typically ranges from 50‑80 kg/m². Taking a relatively conservative mid‑range value of 65 kg/m² , the total steel requirement for 100,000 m² is approximately 6,500 tonnes.
Exterior Wall Load Comparison:
| Solution | Total Load | Difference vs. Soft Stone |
|---|---|---|
| Stone Cladding (Dry‑hung) | 90 kg/m² | +82 kg/m² |
| MCM Soft Stone | 8 kg/m² | —— |
Exterior Wall Area Estimate:
Average floor area ≈ 3,600 m²; building perimeter ≈ 250m; facade area ≈ 250m × 80m = 20,000 m². After deducting door and window openings, the actual cladding area is approximately 16,000 m².
Total Load Reduction:
82 kg/m² × 16,000 m² = 1,312 tonnes
This 1,312‑tonne load reduction represents approximately 3%‑5% of the building's total permanent load.
Structural Optimization Potential:
Based on structural engineering practice, when lightweight materials are used for partitions and exterior walls, the resulting steel reinforcement optimization typically falls within 3%‑8% . Using a reasonable mid‑range figure of 5% optimization:
6,500 tonnes × 5% = 325 tonnes of steel
At a current composite steel price of approximately RMB 4,500/tonne:
325 tonnes × RMB 4,500 = approximately RMB 1.46 million
In addition, foundation works (piles and raft slabs) can also be optimized, though the savings are smaller than for superstructure steel. A conservative estimate would be RMB 0.5‑1.0 million.
Total Structural Cost Savings: Approximately RMB 2.0‑2.5 million (equivalent to RMB 20‑25 per m² of floor area)
These savings are essentially "free" – they require no additional investment, only the right material selection decision.
II. Exterior Cladding Material & Installation Costs: RMB 12 Million in Direct Savings
Natural granite dry‑hung systems: Market prices typically range from RMB 800‑1,200/m². For imported stone or custom‑shaped panels, costs can reach RMB 1,800‑3,500/m². It should be noted that RMB 400/m² usually refers to the stone material only – excluding the sub‑frame, anchorage, and installation labour.
MCM soft stone: Factory prices for standard products typically range from RMB 55‑88/m². Including the dedicated adhesive and installation, the all‑in unit price is approximately RMB 120‑180/m².
Based on 16,000 m² of exterior cladding:
| Solution | All‑in Unit Price | Total Cost |
|---|---|---|
| Stone Cladding | RMB 900/m² | RMB 14.40 million |
| MCM Soft Stone | RMB 150/m² | RMB 2.40 million |
Direct Exterior Cladding Cost Savings: Approximately RMB 12 million
III. Transport & Warehousing: RMB 150,000‑200,000 in Hidden Savings
Natural stone has a density of approximately 2.5‑2.7 tonnes/m³. A 25mm thick stone panel weighs about 65 kg/m². MCM soft stone weighs only 3‑8 kg/m² – roughly one‑tenth of stone.
Using the same 35‑tonne truck:
Stone: approximately 500 m² per load
MCM soft stone: approximately 7,000 m² per load
For a 16,000 m² project:
Stone requires approximately 32 truckloads
MCM soft stone requires only 3 truckloads
At an estimated RMB 3,000 per truckload, transport cost savings alone amount to approximately RMB 87,000.
For warehousing, soft stone can be stacked, occupying less than one‑tenth the storage area of stone – a particularly significant saving for projects with tight site conditions. This hidden saving is estimated at RMB 50,000‑100,000.
Total Transport + Warehousing Savings: Approximately RMB 150,000‑200,000
IV. Life‑Cycle Maintenance Costs: RMB 1.6‑3.2 Million in Long‑Term Savings
Natural stone dry‑hung systems require regular maintenance – cleaning, anchorage inspection, replacing damaged panels, and re‑sealing joints. Annual maintenance costs are approximately RMB 5‑10/m². Over 20 years, that equates to RMB 100‑200/m² – or RMB 1.6‑3.2 million for 16,000 m².
MCM soft stone offers excellent weather resistance. Under normal service conditions, no major maintenance is required for 20‑30 years. Rainwater self‑cleaning is sufficient for routine upkeep – maintenance costs are effectively zero.
V. Life‑Cycle Cost Summary
Using the same 100,000 m² building with 16,000 m² of cladding:
| Cost Item | Stone Cladding | MCM Soft Stone | Savings |
|---|---|---|---|
| Cladding Direct Cost | RMB 14.4M | RMB 2.4M | RMB 12.0M |
| Structural Optimization | —— | —— | RMB 2.0‑2.5M |
| Transport & Warehousing | —— | —— | RMB 0.15‑0.2M |
| 20‑Year Maintenance | RMB 1.6‑3.2M | ≈0 | RMB 1.6‑3.2M |
| Total Life‑Cycle Savings | RMB 15.75‑17.9M |
Per square metre of floor area, total life‑cycle savings amount to approximately RMB 157‑179/m².
VI. The Numbers Are In – What's the Conclusion?
Aggregating the analysis above, the cost advantages of MCM soft stone come from multiple dimensions – no single item is overwhelmingly large, but every item delivers real savings:
Exterior cladding direct cost: Saves approximately RMB 12 million – the largest single item
Structural cost optimization: Saves approximately RMB 2.0‑2.5 million – still highly significant
Transport & warehousing: Saves approximately RMB 0.15‑0.2 million – a valuable extra
Life‑cycle maintenance: Saves approximately RMB 1.6‑3.2 million – especially important for long‑term asset holders
MCM soft stone's greatest value lies in this: it breaks the fixed perception that "stone‑look quality must come at a high cost." It delivers a visually comparable finish for less than one‑fifth the cost of natural stone; it reduces structural load to less than one‑tenth of stone's weight; and it achieves 20‑30 years of stable service with virtually zero maintenance.
When all the numbers are tallied, MCM soft stone may not be a "disruptive revolutionary material" – but it is a choice that strikes a practical balance between cost and quality.
VII. Material Selection Is More Than Just Numbers
All the calculations above rest on one core premise: the product itself must be of reliable quality. If material performance falls short – leading to hollow spots, detachment, or fading – actual maintenance costs will far exceed estimates, and may even lead to safety incidents.
OlinMat MCM Soft Stone is manufactured from premium inorganic raw materials, offering excellent weather resistance, freeze‑thaw resistance, and anti‑aging properties – ensuring long‑term stable performance on high‑rise building facades. In addition, OlinMat provides professional installation guidance and dedicated matching adhesives – helping project teams maintain quality control from material selection through to installation, ensuring every yuan is well spent.
We have a showroom and in‑stock warehouse in Egypt – customers can visit to view samples and experience product quality and flexibility firsthand. Whether for large‑scale projects or commercial applications, OlinMat delivers professional product solutions and technical support.
📩 Interested in project collaboration? Let's talk!
Please reach out to us through our official website or social media channels – we'll respond promptly. OlinMat looks forward to partnering with you to deliver cost‑effective, high‑quality solutions for every project.
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