PPF System
Overview and Features
1. PPF SYSTEM Overview
DIS system, a lightweight assembly frame, is almost standardized and widely used for factory/storehouse structures below the width of 18M.
However, for structures of widths ranging between 18~30M, H-steel and PEB structures are compositely used.
DIS system, a lightweight assembly frame, is not up for application in mid scale according to thickness or material form. H-shaped steel and PEB
SYSTEM are inadequate for appropriately responding to the customer’s demands. Therefore, we have developed a product that is applicable for widths between 18~30M.
The recently developed Portal Frame and DIS system were grafted to introduce PPF system, a medium and large scaled new frame system.
2. PPF SYSTEM Composition
3. PPF SYSTEM Design
The flange is designed as a pentagon to guarantee stability, while the WEB material aesthetically expresses the nature to escape from the monotony of structural materials and display an aesthetic appearance.
4. PPF SYSTEM Features
New Form and High Strength
- Varied flange and WEB width to reduce weight and achieve sectional efficiency.
- Developed in the close-shaped form in compliance with the portal structural system.
- High strength such as SN490 and SPA-H were applied.
Economical efficiency through member decrease
- Cold-formed flange with 6T, set WEB as 4.5T to control WEB height, minimized member weight and maximized the rigidity.
Environment-friendly material
- Minimized work on-site to minimize construction wastes and to make recycle possible
Reduction in field erection time and constructability
- Minimized joint parts and applied end-plate for easy joint.
- Used only bolts and the construction became easy and precise.
Credible quality
- Obtained credibility by 100% automated production line.
- Acquired structural stability through the structural calculation program.
Material and Shape
1. Material
1) Main beam
| Material |
Yield strength |
Tensile strength |
Elongation |
Mark |
| N/mm² |
kg/mm² |
N/mm² |
kg/mm² |
(%) |
| SPA-H |
Min. 345 |
Min. 35 |
Min.480 |
Min. 49 |
Min. 22 |
| SN490 |
Min. 325 |
Min. 35 |
Min. 480 |
Min. 50 |
Min. 17 |
2) Sub beam(Purlin, Girt)
| Material |
Yield strength |
Tensile strength |
Elongation |
Mark |
| N/mm² |
kg/mm² |
N/mm² |
kg/mm² |
(%) |
| SGH400 |
Min. 295 |
Min. 30 |
Min. 400 |
Min.41 |
Min. 18 |
| SN490 |
Min. 325 |
Min. 35 |
Min. 480 |
Min. 50 |
Min. 17 |
2. Main Material Shape and Product Type
| Size |
shape |
Web(H) |
Flange(W) |
Web thickness |
Flange thickness |
| (mm) |
(mm) |
(mm) |
(mm) |
| PF 450 |
 |
450 |
450 |
4.5 |
6.0 |
| PF 500 |
500 |
| PF 550 |
550 |
| PF 600 |
600 |
| PF 650 |
650 |
| PF 700 |
700 |
| NOTE : FIRST PRODUCT PF500~PF650/ORDER MADE PRODUCT PF450,PF700 |
| Shape |
Hole location |
| 400 |
 |
 |
| 450 |
 |
 |
| 500 |
 |
 |
| 550 |
 |
 |
| 600 |
 |
 |
| 650 |
 |
 |
| 700 |
 |
 |
Structural Experiment and Analysis
1. PPF SYSTEM structural experiment [Testing by: Research Institute of Industrial Science & Technology (RIST), Pusan National University]
- Certified structural stability through structural capacity evaluation on base joint, eaves joint and ridge joint
- Acquired certifying data on evaluation of factory-manufactured end plate joint fixation
Experiment on joint
|
|
|
|
Measure organization
|
BB test piece
|
|
|
|
Longitudinal support by  -channel |
BB test piece experiment
|
Experiment of repetitively applying force
|
|
|
|
Eaves joint
|
Base joint
|
|
|
|
|
Displacement equipment of Eaves joint
|
Displacement equipment of base joint
|
|
|
|
End-plate test piece
|
|
|
|
Displacement equipment of end-plate test piece
|
Test
piece |
Load
condition |
End-plate |
H.T.Bolt
(F10T) |
max. Moment
(KNm) |
Breaking mode |
| CCB1 |
CYCLNG |
220 X 22 |
8 - M24 |
287.78(Tension) |
287.78(Tension) |
| CCB2 |
CYCLNG |
220 X 22 |
4 - M24 |
284.73(Tension) |
Compression bucking of column flange
+ Web bucking of beam |
| CCB3 |
CYCLNG |
220 X 16 |
8 - M24 |
330.12(Tension) |
Compression bucking of column flange
+ Web bucking of beam
+ Breaking welding zone of beam compression flange |
Experiment Results of repetitively applying force
| Step |
Radius |
Cycle |
Step |
Radius |
Cycle |
| 1 |
0.0037 RED |
6 |
5 |
0.0015 RED |
2 |
| 2 |
0.005 RED |
6 |
6 |
0.02 RED |
2 |
| 3 |
0.0075 RED |
6 |
7 |
0.03 RED |
2 |
| 4 |
0.01 RED |
4 |
8 |
0.04 RED |
2 |
Experiment on welding joint
|
2 Pieces welded
|
2 Pieces welded
|
|
2mm gap
|
5mm gap
|
|
|
|
|
|
3mm gap
|
7mm gap
|
|
|
|
|
2. PPF SYSTEM Structural Analysis
- Developed PPF™, the 3D-based structural designing program, so that the efficiency of structural designing to be maximized
- Integrated structural analysis, structural designing and drawing composition (Performed detailed analysis per member → Concluded the structural calculation)
Design load condition
|
Sample building Design
- Factory : 1,200 m²
- Wind condition and wind region : 35(C) region
- Building size(DxWxH) : 24x50x9(m)
- SPAN : 24m
- Column distance : 5m
Design Load
- Dead Load 50kg/m²
- Live Load 50kg/m²
- Wind Load 35m/sec(C)
|
 |
Register project and Modeling
Selection Main beam and sub beam
Structural analysis and Design
Analysis results
Analysis results of element
Section Properties and Allwable Span
1. PPF SYSTEM Section Properties
| Standard |
PF 450 |
PF 500 |
PF 550 |
PF 600 |
PF 650 |
PF 700 |
| SHAPE |
 |
| WEB THICKNESS(mm) |
4.5 |
FLANGE THICKNESS |
6.0 |
| WEIGHT(kg) |
52.40 |
54.17 |
55.93 |
57.70 |
59.46 |
61.23 |
| SECTION AREA A(mm²) |
6,675.14 |
6,900.14 |
7,125.14 |
7,350.14 |
7,575.14 |
7,800.14 |
| SECTION AREA A(mm²) |
6,675.14 |
6,900.14 |
7,125.14 |
7,350.14 |
7,575.14 |
7,800.14 |
CENTER
AXIS |
X(mm) |
74.79 |
74.72 |
74.66 |
76.60 |
74.55 |
74.50 |
| Y(mm) |
225 |
250 |
275 |
300 |
325 |
350 |
INERTIA
MOMENT |
Ixx(cm4) |
18,954.98 |
24,653.09 |
31,213.71 |
38,664.98 |
47,035.01 |
59,351.93 |
| Iyy(cm4) |
1,360.38 |
1,360.51 |
1,360.63 |
1,360.75 |
1,360.86 |
1,360.97 |
SECTION
MODULOUS |
Zxx(cm²) |
842.44 |
986.12 |
1,135.04 |
1,288.83 |
1,447.23 |
1,610.06 |
| Zyy(cm²) |
180.88 |
180.73 |
180.60 |
180.48 |
180.36 |
180.25 |
RADIUS OF
GYRATION |
Rxx(mm) |
168.51 |
189.02 |
209.30 |
229.36 |
249.18 |
268.78 |
| Ryy(mm) |
45.14 |
44.40 |
43.03 |
43.03 |
42.38 |
41.77 |
2. PPF SYSTEM Allowable Span
|
Load Condition
- Dead Load(D.L) : 50kg/m²
- Live Load(S.L) : 50kg/m²
- Wind Load(W.L)
- Design Wind velocity Speed : 35m/sec
- Wind region : C region
- Building height : 6.0M
- Roof Slope : 15°
- Foundation Condition : fix conditionFIX)
|
 |
Column distance : 4.0M
| SPECIFICATION |
18M |
20M |
22M |
24M |
26M |
28M |
30M |
| PF 450 |
o |
o |
o |
o |
x |
x |
x |
| PF 500 |
o |
o |
o |
o |
o |
x |
x |
| PF 550 |
o |
o |
o |
o |
o |
o |
x |
| PF 600 |
o |
o |
o |
o |
o |
o |
o |
| PF 650 |
o |
o |
o |
o |
o |
o |
o |
| PF 700 |
o |
o |
o |
o |
o |
o |
o |
NOTE : Standard product - PF500, PF550, PF600 / order-made product -PF450, PF700
Column distance : 6.0M
| SPECIFICATION |
18M |
20M |
22M |
24M |
26M |
28M |
30M |
| PF 450 |
o |
o |
x |
x |
x |
x |
x |
| PF 500 |
o |
o |
o |
x |
x |
x |
x |
| PF 550 |
o |
o |
o |
o |
x |
x |
x |
| PF 600 |
o |
o |
o |
o |
o |
x |
x |
| PF 650 |
o |
o |
o |
o |
o |
x |
x |
| PF 700 |
o |
o |
o |
o |
o |
x |
x |
NOTE : Standard product - PF500, PF550, PF600 / order-made product -PF450, PF700
