Folding container house with bathroom and kitchen:

Design and Function Analysis

I. Folding Structure and Space Layout

• Modular folding design

Adopting double-wing folding box or three-in-one expansion structure, fast unfolding and stowage is realized through hinges and hydraulic rods, 

the volume is reduced to 1/3 of the original size during transportation, and a complete living space (including bathroom, kitchen and bedroom) is formed after unfolding.

Typical size is 20 feet (6 meters) container, after unfolding the area can be up to 18-25 square meters, including independent bathroom, open kitchen and living area.

• Optimized functional zoning

Kitchen design: Compact one-piece layout with integrated hidden induction cooktop, folding sink and multi-storey storage cabinets, 

with fireproof stainless steel panels on the walls to meet basic cooking needs.

Bathroom configuration: wet and dry separation design, with built-in folding shower screen, wall-mounted toilet and waterproof and breathable membrane wall, 

and the drainage system is directly connected to the external septic tank through the pre-buried pipes at the bottom.

II. Materials and energy-saving technologies

• Main Material

Box structure: galvanized steel plate (thickness ≥1.5mm) with polyurethane insulation (thermal conductivity ≤0.025 W/m-K), taking into account the strength and thermal insulation properties.

Interior wall finish: calcium silicate board or bamboo fiber board, coated with low VOC environmentally friendly paint, moisture-proof, fire-resistant and easy to clean.

• Energy and Resource Recycling

Pre-installed solar panels (3-5kW) and a small wind turbine on the roof, together with a lithium battery storage system, support off-grid mode for lighting, water heater and kitchen appliances.

Integrated rainwater collection device (capacity 1-2 tons), purified through sand filtration for toilet flushing and irrigation, reducing reliance on municipal water.

III. Intelligence and Portability Upgrade

Intelligent home system: supports remote control of LED lighting, air conditioning and fresh air system by cell phone APP, 

built-in smoke alarm and water leakage sensor to enhance safety monitoring capability.

Rapid installation technology: no foundation construction is required, fixed by pre-installed ground bolts or counterweight blocks, 

and the whole process from transportation to function enablement is completed within 4 hours.

IV. Typical Application Scenarios and Prices

• Application Scenarios

Temporary residence: construction sites, field exploration camps, supporting batch combination into dormitories or office areas.

Tourist accommodation: beach, lakeside and other landscaped areas, as a movable B&B or vacation home.

• Price range

Basic model (including bathroom and kitchen): ¥5800-10500/set (20-foot standard box).

High-end customized model (integrated photovoltaic, smart home): ¥30,000-50,000/set.

V. Precautions

Compliance: It is necessary to confirm the local fire acceptance standards for container houses (e.g. fireproof coating level, width of escape routes).

Maintenance requirements: regular lubricant is required at the folding joints, and coastal areas are recommended to re-spray the anti-rust coating every 2 years.

Common Failures and Solutions:

I. Electrical system failure

• Equipment can not start (such as induction cooker, water heater)

Failure causes: power cord off, leakage protection plug damage or lithium battery storage system abnormal.

Solution:

Check the power plug connection status, re-plugging or replace the damaged plug;

Use a multimeter to detect the lithium battery voltage, if it is lower than the nominal value need to charge or replace the battery pack.

• Lighting / fresh air system failure

Failure causes: poor contact of the control line, intelligent module (e.g. Zigbee) signal interruption.

Solution:

Reboot the smart home gateway and re-pair the failed devices;

Check the line connectors and reinforce them, and replace the damaged cables if necessary.

II. Folding structure failure

• Unfolding/storing jamming or abnormal noise

Failure causes: rusty hinges, insufficient pressure on the hydraulic lever or deformation of the guide rail.

Solution:

Clean the hinge rust and apply grease (recommended once a month);

Replenish hydraulic oil to the standard pressure value (usually 12-15MPa).

• Deterioration of sealing (water seepage in rainy days)

Cause of fault: Aging or deformation of the waterproof adhesive strip at the folding joints.

Solution:

Replace the EPDM rubber sealing strip, and reapply polyurethane waterproof adhesive at the joints;

Regularly clean up the joints debris (such as leaves, mud and sand) to prevent extrusion and deformation.

III. bathroom and kitchen plumbing system failure

• Drainage pipe blockage

Failure causes: kitchen residue or hair accumulation, insufficient pre-buried pipeline slope.

Solution:

Use pipe unclogging agent (bio-enzyme type is more environmentally friendly) to dissolve the blockage;

Adjust the slope of the pipeline to ≥3° to ensure smooth drainage.

• Interruption of shower hot water supply

Failure causes: scale buildup on the heating pipe of instantaneous water heater, malfunction of water flow sensor.

Solution:

Clean the heating pipe with a citric acid solution cycle (at least 1 time per year);

Calibrate or replace the water flow sensor.

IV. insulation and material problems

• Mold or bulge on the interior walls

Failure causes: moisture in calcium silicate boards, insufficient ventilation in bathrooms leading to condensation buildup.

Solution:

Increase the power of the exhaust fan (recommended air exchange ≥ 50m³/h) and extend the running time;

Shovel out the moldy area, paint anti-mold primer and then repair the finish layer.

• Outer heat preservation layer falling off

Failure causes: polyurethane foam layer and steel plate bonding failure, salt spray corrosion in coastal areas.

Solution:

Remove the hollow drum parts, re-spray polyurethane and cover galvanized steel sheathing;

Check the box coating every year, partially reapply epoxy zinc-rich primer.

V. Intelligent system and safety monitoring

• False triggering of smoke/water leakage alarm

Failure reason: Sensor sensitivity is set too high or improper installation position.

Solution:

Adjust the sensor sensitivity level (kitchen is recommended to be set to mid-range);

Avoid direct steam injection area to install smoke sensor (≥1.5 meters from the cooktop).

VI. Compliance Maintenance Recommendations

Fire Acceptance: Ensure that the fireproof coating reaches A1 standard and the width of the escape route is ≥0.8 meters;

Anti-rust management: fully spray anti-rust coating every 2 years in coastal areas, focusing on folding joint parts.

Why Choose Us

Shijiazhuang Eiffel Steel Structure Co., Ltd.

Shijiazhuang Eiffel Steel Structure Co., Ltd. is an enterprise dedicated to researching and developing new energy-saving and environmentally friendly houses and construction methods. We always adhere to the values of honesty and quality first, and position ourselves as a leader in high-quality steel structure villa construction. We combine emerging foreign technologies with the actual domestic market and provide customers with one-stop services for prefabricated buildings such as design, production, interior decoration, and whole house customization. The prefabricated buildings produced by the company are widely used in office buildings, villas, rural courtyards, estate clubs, tourist attractions, homestays, hotels, public facilities, etc. 

At present, the company is centered in Shijiazhuang, Hebei Province, with products radiating to regions such as Beijing, Tianjin, Hebei, Shanxi, Shandong, Henan, Liaoning, Mongolia, Jiangsu, Sichuan, and Guangxi, and exported to overseas markets. Adhering to the quality demand of "building a century old villa, choose Eiffel", we strive to create an excellent brand of prefabricated buildings.

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