Prefabricated multi storey steel structure construction apartment building

The project is located in the Atlantic Ocean near Ghana, Africa The function of the ground floor is garage. Floor height is 3.3 m, for two to five storey are apartments, floor height are 3.3 m, the top plate modeling based floating roof garden, layer height of 3.0 meters. On the second floor is a ladder one household , with a separate dining room. Divided into big and small , large sets of 290 square meters, a small set of 226 square meters.

This project for three to five layer with a ladder two households , is divided into large and small sub-family, small household area of 78.8 square meters, large household area of 147.42 square meters . According to the overall plan design apartment owners, the design made on the basis of the corresponding improvement and modification to meet the original design features and appearance.

The ground floor is car parking, Steel structure beam economic column spacing in 6 ~ 9 m , the original design of column distance is 11.4 m , larger span, using steel girder section height of at least 800mm ~ 900mm, Not only affect the layer using the height, but it is not economic, high cost , so this program adds two row column column in height and increased use of more economical and reasonable. The design of parking can park 24 domestic small cars, Due to space limitation parking space is small, if the site allows advice increase bay dimensions, for 5400mm is better. In addition, according to the requirements of national standard staircase four angle must set the load-bearing column, the original design has two corners no column which is not conform to the requirements of the specification. This design have four columns.

The first storey is single-family apartments, A public platform and corridors, increase the function room , this layer of all rooms are in accordance with the requirements of customers design scheme, only partial according to structural grid to micro adjustment of the size of the room, designed for ease of use and implementation of the service function of Architecture . Also in the original design platform side wall local prominent 300mm, the present design scheme flush with stairwell wall design, in order to make the structure more reasonable, save the external retaining wall , the room is also convenient to use.

The second layer to the fourth layer is a staircase two households apartment buildings, two buildings are independent of each other, each ladder divided into large household and small household, basic function rooms are according to the original design, but for some of the local position of the room to do some corresponding adjustment, due to the original design with water room on the lower level of the bedroom , this is a serious violation of the provisions of building codes, we design have changed adjustment. In addition, kitchen design should have the external ventilation is good, now in the small kitchen is located in the medial can only adopt indirect ventilation design . Individual room need according to the needs of structure column grid size make some micro adjustment. This floor two buildings in the original design are cantilever outward 600 mm, this proposal does not revealing, because after revealing individual columns in the room will affect the use, also not economic .Need to increase the pillars in balcony place, the original design scheme is no pillars cantilever balcony is unsafe, implementation difficulties.

The basic information of function design

1.The lightning protection design in this design, lightning arrester is arranged around the roof parapet and lightning protection and grounding, connected by the flat iron and steel columns in the base.

2. The solar water heater is set on the roof of this project to supply every bathroom.

3. All the living room, kitchen and bedroom with socket and switch, equipped with cable TV, Internet, telephone line.

4. All room lamp is an LED lamp, water room lights for waterproof lamp.

5. Living room and bedroom need to install hybrid solar air conditioning .

6. The phone box located in a layer in the garage, and each apartment kitchen, living room and bedroom connected .

7. Each apartment have living water tank on the roof, a water pump house under buildings, fire water tank is located in the ground, Saturday Sunday from the local municipal water supply.

8. Each building with a room, set to supply each building electricity generator.

9. Solar / wind energy to provide electric hybrid system for each apartment.

Introduces the design of engineering structure

According to the basic geological data provided by the customer survey report and design, the following basic parameters of the engineering design and load value : 1. Structural safety grade two level, site classification is II, surface roughness B class ； 2. Seismic intensity of 7 degrees, the basic design earthquake acceleration is 0.15g, the third group of the design earthquake, seismic Class C. 3. Load value : Basic wind load: 0.4KN/M2； Floor dead load: (considered as part of the load of the floor slab) 6.0KN/M2； Floor live load :2.0KN/M2； Roof dead load: 6.0KN/M2； Roof live load: 2.0KN/M2( Roof can bear people)； Roof live load: 0.5KN/M2 ( Roof can’t bear people)；

Through the analysis of the structure : 1. Structural column using Q345B low alloy steel square pipe, hot-rolled steel pipe . 2. Structure beam used in hot rolling of Q345B low alloy or welded H steel . 3. The floating roof plate shape using H type steel or rectangular steel pipe. Every square steel to be used for: 63Kg/m2

The basic material of the project for the first : 1. Main body structure and using Q345B low alloy steel pipe, hot rolled steel pipe. Welding of H steel hot rolling or, wall keel use of C type steel cold-formed steel 2. Floor and roof panel adopts steel composite floor. 3. Wall panel use cement foam board or fiber cement board compound wall . 4. Roofing with coiled material waterproof material SBS (3+3). 5. Roof floating panels with gray white aluminum plate. 6. Wall curtain wall with hidden frame glass curtain wall. 7. The exterior wall uses waterproof paint and real stone paint decoration.

Qingdao Yidongxiang Steel Structure Co., Ltd.founded in 2002,The company is an innovative enterprise focusing on the steel structure construction industry which has been engaged in steel structure construction industry for more than 20 years. We are one of the biggest manufacturers of steel buildings in China with capacity over 10000 tons monthly,we have complete engineering team to provide customers with integrated system solutions from  technical construction,engineering design,program customization,manufacturing,installation and construction. We have successfully completed overseas projects in North America, South America, Asia and South Asia, Africa etc, and exported products to more than 80 countries and regions.

Based on the principles of innovation, cooperation, and integrity,our company is committed to providing our high-quality products and after-sales services to worldwide clients. We have unique competitive advantages in steel structure construction and we can provide customized solutions for customers.

Our company has obtained CE certification(EN 1090 certificate),ISO9001,ISO14001,ISO45001 certification. we also have got class one for the steel structure engineering professional contracting,class one for building decoration engineering professional contracting, class two for building engineering construction general contracting ,class two for municipal public Engineering construction general Contracting , class two for fire fighting facilities engineering professional contracting,class two for building curtain wall engineering professional contracting , class three for Urban and road lighting engineering professional contracting , class GB1, GB2, GC2 for special equipment pressure pipeline Installation , construction labor and other qualifications.Our company has been rated as a national AAA level credit enterprise in terms of quality, service and reputation.

 In recent years, our company has continuously introduced professional and technical talents, with engineering team for more than 50% of the total number of employees. we have strong technical and good business philosophy. At present, our company is a member unit of China Steel Structure Association, Qingdao Municipal Association, and Qingdao Heating Association.After 20 years of development, the company has established an excellent team integrating research and development, technology, sales, production, quality inspection and logistics. From product design to project work, we can provide professional and high-quality services. We look forward to working with you.