popular modern prefab houses

All prefabricated modular type buildings are constructed on the reinforced concrete foundations. After completion of the erection of all external – internal walls, roof and suspended ceiling; leveling concrete (screed) must be prepared to install floor covering materials.

Foundation and leveling works should be prepared by the client.

STEEL STURCTURE   

Foundation: Design of concrete foundation with steel re-enforcement will be provide by HEYA.

Details of Steel Structure: Connected using galvanized bolts and nuts.

Design Loads:

Floor load: 250 kg/m²

Roof load: 100 kg/m²

Wind load: 50 kg/m²

Earthquake Resistance – Level 8

Specification of Steel Works:

1. Material: Cold-rolled steel profile with hot dipped galvanized finishes

2. Manufacture of joint plate: Using steel plate welded. Hot-dip galvanized after adjustment.

3. Column connection: Using M12 to connect column with joint plates.

4. Roof beam connection: Using M12 high tensile bolt and nut to connect roof beam and joint plates.

5. Bracing: Bracing made with thread tapping and hot-dipped galvanizing finishes.

6. Main elements and typical connection details:

WALL AND ROOF PANEL

Exterior Walls: Prefabricated sandwich panel made up from pre-colored galvanized steel plate of 0.5 mm. in thickness at inner/outer face and EPS (R Value 33.30) insulation of 100mm in thickness and 12kg/m3 in density. Wall frame will be constructed of steel profiles.

Interior Walls : Prefabricated sandwich panel made up from pre-colored galvanized steel plate of 0.5 mm. in thickness at inner/outer face and EPS (R Value 33.30) insulation of 75mm in thickness and 12kg/m3 in density. Wall frame will be constructed of steel profiles.

Polystyrene foam sandwiched panel constructed by 2 layers of pre-painted steel plate and high density polystyrene foam jointed by strong adhesive, under high compressed process to form solid panel.

EXTERNAL COATING (Optional Item)

Specification of Texture Coating (Grey stone appearance):

Elastic exterior coating is flexible coating used to help protect and maintain the appearance of exterior masonry walls. It is designed to bridge existing and future cracks in masonry by stretching and shrinking as exterior walls expand and contract with changes in temperature. Use of elastic exterior coating is an excellent way to help prevent wind driven rain, acid rain and freeze-thaw conditions from damaging a building’s appearance and structural integrity.

Application Reference:

a) Surface preparation: Previously unpainted surface clean of dust, grease and loose matter. Remove unstable old film by high pressure wash or scraper. The substrate should be clean, dry and stable, ensure the surface moisture < 10%,PH<9.5.

b) Primer: sealer. Theoretical spreading rate: 6-8m2 /kg.

c) Finish: Stir well before use, brush 1-2 elastic coating. Theoretical spreading rate: 1-1.5m2 /kg (two coats). Interval: ≥6h. The temperature of application environment and substrate should ≥5oC.

CEILING

1. For Dry Area: 9.5mm thick gypsum board suspended ceiling of with galvanized concealed grid.

2. For Wet Area: PVC suspended ceiling of 8 mm. in thickness with concealed grid.

INSULATION of Wall and Roof

External Wall: EPS (R Value 33.30), 100mm. in thickness, 12-15 kg/m3 density.

Internal Wall: EPS (R Value 33.30), 75mm. in thickness, 12-15 kg/m3 density.

Roof: EPS (R Value 33.30), 100mm. in thickness, 12-15 kg/m3 density.

FLOORING

Flooring for dry area: Gray colored PVC roll of 1.8 mm. in thickness with flat PVC skirting.

Floor Covering for wet area: Ceramic tiles (33 x 33 cm or .) with flat PVC skirting (gray). 

DOORS

External Door: White colored galvanized steel sheet on both faces and EPS foam of 50mm in thickness in between. Doorframe will be produced from shaped alum. sheet of 1.2 mm in thickness.

Exterior door hardware will include 3 hinges per door leaf, lockset and weather-stripping.
Door locks will be cylindrical.

Internal Door: White colored galvanized steel sheet on both faces and EPS foam of 50mm in thickness in between. Doorframe will be produced from shaped alum. sheet of 1.2 mm. in thickness.

Interior door hardware will include 2 hinges per door leaf with lockset. Door-lock will be cylindrical type.

WC Door: White colored galvanized steel sheet on both faces and EPS foam of 50mm in thickness in between. Doorframe will be produced from shaped alum. sheet of 1.2 mm. in thickness.

WINDOWS

External Window: Windows will be flashed and caulked all around on both sides to be weatherproof. PVC windows will be sliding unit with weather stripping and hardware. Window will be prefixed into wall panel.

Double glazing of 5 + 9 + 5 mm. in thickness and Flynet

Internal Window: Windows will be flashed and caulked all around on both sides to be weatherproof. PVC windows will be sliding unit with weather stripping and hardware. Window will be prefixed into wall panel.

Double glazing of 5 + 9 + 5 mm. in thickness

ELECTRICAL INSTALLATION

1 unit of wall-mounted type electrical panel will be provided for each building. System Voltage will be 220 V and the frequency will be 50 Hz. All related equipment inside the panel like circuit breaker are chosen according to international standards. In the panels, lighting outputs MCB’s will be 1x10 A, socket output MCB’s will be 1x16 A. All electrical panels will have 3 poles earth current leakage relays for protection.

For indoor lighting compact fluorescent lighting fixtures will be provided. (4x18 W)

1 power socket outlet (1x16 A) will be provided for each 10-12 m². All power socket outlets will be European type.

Our manufacturing workshop show: