Project dimension: 64*175*9m with divisions for different function + 12*32*8m cold storage room
Project location: Lima, Peru
Project function: Processing, warehouse and cold storage room
The client is specialises in frozen foods of industry with a branch company in China, and importing and exporting kinds of frozen foods. In order to expand his business, he inquired about a 384m2 small cold rooms and a 11,200m2 of steel structure building to Dorian in October. The small cold room project will be purchased within this year and big project will be ordered next year. In order to discuss the modification details better, and understand the strength and scale of Dorian factory, the client arranged his engineer to came to China.
The project details:
Dorian team took about three days of time to finish layout drawing and quotation after confirm the project details.
The detailed dimension of big project is 64*175*9m, Dorian engineer designed double span for 64m side, with 32m for each span. The whole building is respectly two phase, The first one will construct one span and then second phase. The 7m columns space for 175m side, 8m for 64m side considering the loading and economical issues. Since client mentioned that he prefer insulation materials, Dorian team suggested adopting rock wool sandwich panels as roof and wall, because he didn’t reveal that this project need cold storage rooms inside and other different division areas, so the whole project was designed based on a regular warehouse.
For the small cold storage project of 12*32*8m, Dorian team designed PIR sandwich panels as roof and wall, the layout drawing was finished only and didn’t calculate price, because client’s engineer would come to discuss the further modification details.
The client’s engineer and staff arrived in the Luoyang city on November 1st, Dorian picked up them in the morning and take them to visit factory directly. Firstly, the project details of 64*175*9m project were been talked, during the process of communication, Dorian team learned that the whole building need to be designed into four areas, respectively reception areas, processing area, warehouse area and cold storage area, but the exact dimensions for each area have to be confirmed with their department after backed to Peru. Except the cold storage area adopt 100mm PIR sandwich panels, other area will use rock wool sandwich panels.
For the small cold storage project, the client also requested second proposal to use metal sheet for the exterior roof and 100mm PIR sandwich panels as interior ceiling and wall for comparing.
The definition and function of Rock wool sandwich panel:
Rock wool board, also known as rock wool insulation and decorative board, is an inorganic fiber board made primarily from basalt through high-temperature melting and processing. It is a new type of insulation, fire-retardant, and sound-absorbing material. The artificial inorganic fibers produced through high-temperature melting and processing give rock wool board the characteristics of being lightweight, having low thermal conductivity, absorbing heat, and being non-combustible.
The definition and function of PIR sandwich panel:
Polyisocyanurate (PIR) is used in Sanhemei composite boards. PIR is formed through the trimerization of isocyanurate, introducing a cyclic structure and a high isocyanurate index into the compound, resulting in a dense polyisocyanate. This makes the internal rigid foam more stable and provides high heat resistance and flame retardancy. Experiments have shown that it can withstand temperatures up to 200 degrees Celsius for short periods and up to 160 degrees Celsius for long periods.
PIR foam generally achieves a fire resistance rating of B1, with a water absorption rate of up to 0.9%. Its temperature resistance range is approximately -196℃ to +205℃, all of these performance making PIR composite boards ideal for cold storage applications.
After confirmed all the project details, Dorian team take client to the production workshop, the production process of steel columns and beams, purlines and panels were introduced to the client, because the project is close to the sea and it needs have anti-corrosion effect, so Dorian recommend two kinds of proposals (epoxy zinc rich paint and hot-dip galvanized) for comparing the cost. Both proposals have corrosion prevention effect, but the performance of hot-dip galvanized will be better and cost will be also higher accordingly .
The client’s engineer was amazed that Dorian factory have so many of production workshops, and the quality of product was also highly praised by client’s engineer, the were pretty satisfied with this visiting.
Dorian team have sent update proposal and quotation to client for his small 12*32*8m project already, and the modification details are waiting for client’s feedback.
