Philippines Steel Structure Warehouse Project Technical & Commercial Summary Report

Philippines Steel Structure Warehouse Project Technical & Commercial Summary Report

 

 

 

This project is a prefabricated steel structure warehouse customized by CBC for Philippine clients, designed to adapt to local extreme wind load and seismic environmental conditions. The overall building adopts double-slope roof design with partial brick wall enclosure, featuring standardized steel frame structure and complete peripheral enclosure system. The detailed basic parameters are as follows:

Project Location: Philippines

Design Wind Pressure: 250 KPH

Seismic Design Grade: Grade 8 Seismic Resistance

Overall Dimension: 50m (Width) × 130m (Length) × 6.05m (Height)

Roof & Wall Enclosure Material: 50mm EPS Sandwich Panel

Base Structure: 1m height concrete brick wall at the bottom of the warehouse wall

Door & Window Configuration: 3 sets of electric rolling shutters (6m width × 4m height); 26 sets of ventilation shutters (4m width × 1.2m height)

 

 

 

The warehouse adopts a single-span steel frame structure with one row of middle columns, realizing large-space storage function. The steel frame layout and component specifications are standardized and optimized for local load conditions:

Steel Frame Quantity & Spacing: Total 22 portal steel frames; the spacing of the first and last frames is 5m, and the spacing of all middle frames is 6m

Middle Column Setting: One row of middle columns runs through the whole length of the warehouse

Side Column Specification: H300-800×200×6×8, column height 5.05m, installed on 1m high concrete base

Roof Beam Specification: The beam is divided into six sections (three sections on the left and three on the right), with variable cross-section design: H850-600×200×6×8, H600×200×6×8, H600-850×200×6×8

Middle Column Specification: H300×200×6×8

Purlin Specification: Z180×70×20×2.0 (applied for both roof and wall purlins)

 

 

No.	Steel Material Category	Detailed Description	Quantity (Ton)
1	Main Steel Frame	Including side columns, middle columns, variable cross-section roof beams	100
2	Purlin System	Z-shaped roof and wall purlins (Z180×70×20×2.0)	48
3	Bracing System	Structural supports, tie rods and auxiliary stabilizing components	23
4	Total Steel Material	All structural steel components	171

Overall Project Cost & Shipping Information

Total FOB Cost (Ningbo Port): USD 350,000

Total Shipping Containers: 18 sets of 40HQ high cubes

 

 

 

The structure is specially optimized for the Philippines' strong wind and high seismic risk environment, with reasonable force transmission path and high structural stability, and the detailed force analysis is as follows:

 

4.1 Wind Load Resistance Analysis (250 KPH Extreme Wind)

250KPH belongs to extreme strong wind load, which brings large horizontal wind pressure and wind suction to the warehouse. The variable cross-section roof beam (H850-600 variable height) is adopted in the roof stress concentration area, which effectively improves the bending resistance and shear resistance of the roof beam. The side columns adopt variable cross-section H300-800 design, with larger section modulus at the bottom of the column where the bending moment is maximum, which perfectly adapts to the horizontal wind load force characteristics of large bottom moment and small top moment. The full set of Z-type purlins forms a continuous enclosure stress system, which disperses the local wind suction of the roof and wall, and avoids local deformation and damage of the enclosure plate under extreme wind load.

 

4.2 Seismic Resistance Analysis (Grade 8 Seismic)

Grade 8 seismic design requires the structure to have good ductility and energy dissipation capacity. The project adopts portal rigid frame + middle column integrated frame structure, which forms a stable spatial frame system. The uniform specification of middle columns ensures vertical force balance and uniform seismic response of the whole warehouse. The flexible connection and cooperative stress of purlins and main frame enhance the overall structural integrity. Under seismic load, the steel frame can produce slight ductile deformation to consume seismic energy, avoid structural collapse, and meet the safety requirements of Grade 8 seismic fortification.

 

4.3 Vertical & Horizontal Overall Force Stability

The main steel frame, purlin system and bracing system form a three-dimensional stress system. The vertical dead load and live load of the roof are transmitted layer by layer from purlins to roof beams, then to columns, and finally to the concrete foundation, with clear and smooth force transmission path. The 23-ton bracing system effectively resists horizontal loads such as wind force and seismic force, limits structural lateral displacement, and ensures the overall rigidity and stability of the 130m long large-span warehouse. The 1m high concrete brick wall at the bottom enhances the bottom restraint stiffness of the structure and avoids bottom stress concentration.

 

4.4 Structural Component Rationality

All steel components adopt optimized section design: thickened web and flange (6mm/8mm) improve component rigidity; variable cross-section beams and columns realize material lightweight while ensuring bearing capacity, avoiding material waste. The frame spacing design of 5m at the end and 6m in the middle conforms to the stress law of the end frame bearing larger wind load, realizing the balance of structural safety and economic cost.

 

 

 

Q1: Why is this warehouse specially designed for 250KPH wind speed for Philippine projects?

A1: The Philippines is located in the Pacific typhoon belt and is frequently affected by super typhoons all year round. 250KPH extreme wind speed design is customized for local extreme meteorological conditions, which can effectively resist super typhoon impact, prevent structural overturning, roof tearing and wall damage, and ensure long-term safe operation of the warehouse.

 

Q2: What is the core advantage of Grade 8 seismic design for this warehouse?

A2: The Philippines is in an active seismic zone with frequent crustal movement. Grade 8 seismic design enables the steel structure to have excellent ductility and seismic energy dissipation capacity. It can resist moderate and strong earthquakes, avoid overall collapse or serious deformation of the warehouse, and protect internal goods and personnel safety, meeting local building seismic mandatory standards.

 

Q3: What is the function of the 1m high brick wall at the bottom of the wall?

A3: The 1m high concrete brick wall enhances the bottom structural rigidity and anti-collision ability of the warehouse. It can effectively prevent ground rainwater, dust and small animals from entering the warehouse, avoid bottom corrosion of steel components, and strengthen the bottom restraint of the steel frame to improve overall wind and seismic stability.

 

Q4: Why adopt variable cross-section design for main frame beams and columns?

A4: The variable cross-section design is based on the actual stress law of the structure. The stress and bending moment of beam and column ends are larger, so the section is enlarged, while the middle stress is smaller with reduced section. This design maximizes structural bearing capacity, reduces self-weight of steel structure, saves material cost, and realizes the integration of safety and economy.

 

Q5: What are the advantages of 50mm EPS sandwich panel for roof and wall enclosure?

A5: 50mm EPS sandwich panel has excellent heat insulation, heat preservation, waterproof and wind resistance performance. It can effectively reduce the temperature difference inside the warehouse, avoid internal condensation, adapt to the high-temperature and humid climate in the Philippines, and has light weight, fast installation speed and beautiful overall appearance.

 

Q6: What is the functional purpose of the rolling doors and ventilation shutters configured in the project?

A6: The 6m×4m large electric rolling shutters meet the access requirements of large cargo and handling equipment, improving warehouse operation efficiency. The 26 sets of ventilation shutters realize natural ventilation and air circulation inside the warehouse, reduce indoor humidity, prevent goods moisture and mildew, and adapt to the humid tropical climate of the Philippines.

 

Q7: Why set different frame spacing (5m at ends, 6m in middle)?

A7: The end steel frames of the warehouse bear larger horizontal wind load and end restraint force. The 5m dense spacing enhances the end structural stability and wind resistance. The 6m spacing of middle frames balances structural safety and material economy, which is the optimal layout scheme for large-span warehouses.

 

Q8: What is the role of the Z-type purlin system adopted in the project?

A8: Z180×70×20×2.0 Z-type purlins have high section rigidity and bending resistance. They form a continuous stressed system with the main steel frame, effectively transfer roof and wall loads, fix the sandwich panels, and enhance the overall spatial integrity and wind resistance of the enclosure system.

 

Q9: Is the FOB USD 350,000 cost of the project cost-effective for the Philippine market?

A9: It is highly cost-effective. The project includes complete main frame, purlins, supports, enclosure materials and door and window accessories, with 171 tons of high-quality steel in total. Compared with local Philippine steel structure buildings, CBC's integrated customized solution has standardized design, stable quality and lower comprehensive cost, and the FOB Ningbo price has obvious market competitiveness.

 

Q10: Why do we need 18 sets of 40HQ containers for shipping?

A10: The project involves a large number of steel components, enclosure plates, doors, windows and auxiliary accessories, with a total volume and weight matching 18 40HQ high cube containers. The containerized shipping method realizes standardized packaging, avoids component damage during transportation, and is convenient for port loading and unloading and local customs clearance in the Philippines.