Low Cost Portable Construction Office Prefabricated Container Building With Modular Design I. Introduction The portable construction office is a kind of portable container house. Introducing advanced modern home design concepts, using steel plates, sandwich panels, bolts, aluminum fittings, concrete, wood, ceramic tiles, glass, paint, and other materials through a standard process to refine the integrated activity room, with ready-to-use, move anytime, anywhere, recycle anytime, anywhere, safe, environmentally friendly, beautiful, economical, fast, efficient and so on. II. Design description  This prefab office prefabricated container house with a double slope steel roof, making it could be placed where there is a lot of rain. There is a big working hall, which could hold more than 80 people inside. There are also 3 smaller rooms designed to separate people from different departments. The toilet room is placed beside the door, making the air very easy to circulate. III. Layout description 1 | Building area | 191.36 sqm | 2 | Office room qty. | 3 | 3 | Storage room qty. | 1 | 4 | Toilet room qty. | 2 | IV. Product show  V. Main material specification Part 1: Roof System (roof plate + roof purlin + roof insulation + ceiling) | I | Roof Plate | Roof tile is 0.5 mm thick steel sheet; Pre-coated and color coated; | Strong and corrosion resistance. | ii | Roof Purlin | 1pc 40x80mm Galvanized Square tube + 2pcs 40x60mm Galvanized Square tube + 5pcs 40x80mm Galvanized Square tube; | Firm, strong corrosion resistance and has a long service life. | iii | Roof Insulation | 50 mm glass wool insulation material; | Fireproof A1 class, non-combustion. | iv | Ceiling | The ceiling is 0.4 mm thickness shaped steel plate; Pre-coated and color coated; | Strong and corrosion resistance. | Part 2: Steel Frame (Corner post + column + beam + bolt) | I | Corner Connection Part | Material: 4 mm Thickness Shaped Steel, surface spray treated by machine after repeatedly polished; | Size: 160* 160* 160 mm (Bottom) &160* 160* 180 mm (Top); | Feather: Safe, strong and corrosion resistance. | The color is glossy and can last for a long time. | ii | Column | Material: 2.3mm Thickness galvanized steel structure, surface spray treated by machine after repeatedly polished; | Size: 160* 160* 2480mm; | Feather: Safe, strong and corrosion resistance. | The color is glossy and can last for a long time. | iii | Top and Floor Long Beam | Material: 2.3mm Thickness galvanized steel structure, surface spray treated by machine after repeatedly polished; | Size 1: 3680* 60* 160 mm; | Size 2: 5680* 60* 160 mm; | Feather: Safe, strong and corrosion resistance. The color is glossy and can last for a long time. | iv | Top & Floor Short Beam | Material: 2.3mm Thickness galvanized steel structure, surface spray treated by machine after repeatedly polished; | Size 1: 2680* 60* 160 mm; | Feather: Safe, strong and corrosion resistance. | The color is glossy and can last for a long time. | v | Bolt | High strength galvanized steel bolt; | To fix the Corner Connection Part and beam, Corner Connection Part and column; | Firm, strong and corrosion resistance. | |