Knauf Seismic Design

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Knauf partitions such as the wooden panel partitions and the metal stud partitions can be used as shear walls for horizontal loads from wind and earthquakes for both new buildings and the renovation of buildings. Shear walls are well-known building methods in the USA and New Zealand where wooden constructions are mainly used. The values and application guidelines of non-load bearing partitions can be applied to lateral loads. No resonance effects should be expected for in-plane loads due to the high natural frequency in case of shear loads. Consequently, no dynamic effects need to be taken into consideration, and structural loads can be assumed accordingly. Table 9 shows the permissible in-plane Knauf Seismic Design Shear Walls Table 9: Horizontal load capacity of wooden panel partitions according to „Allgemeinen bauaufsichtlichen Zulassungen“ (General Building Supervisory Permits) Z-9.1-339 (Knauf gypsum fiber boards) and Z-9.1-199 (Knauf gypsum boards) Cladding both sides one side Stud spacing Standard b S Spacing of nails / staples e R Gypsum fiber boards perm. F H in kN for panel height h in m Gypsum boards perm. F H in kN for panel height h in m mm mm ≤ 2.60 ≤ 3.00 ≤ 2.60 ≤ 3.00 600-625 1200- 1250 1200- 1250 min. 50 3.3 max. 75 3.3 max. 150 1.3 min. 50 6.0 5.5 max. 75 7.5 6.3 max. 150 2.7 2.7 min. 50 3.3 max. 75 4.4 2.8 max. 150 1.5 1) Linear interpolation is allowed for values of perm. F H between e R = 50 mm and 150 mm, likewise between h = 2.60 m and 3.0 m. loads for Knauf wooden panel partitions according to the “Allgemeine bauaufsichtliche Zulassung Z-9.1-199” (The General Building Supervisory Permit) [10] (Further information about reduction factors is cited Half panel F H e R F V Full size panel e R F V here). The German Standard for wooden constructions DIN 1052 (08/2004) includes detailed information for the dimensioning of wooden panel partitions with gypsum boards and in-plane loading. Bernd Naujoks (TU Darmstadt, Institut für Stahlbau und Werkstoffmechanik/ Technical R e R R e R h 2600 mm F H R M R e R max. e M = 150 e R h 3000 mm (only with double sided cladding and b 1200) s University of Darmstadt) did a report on me- e R e R tal stud constructions, “Tragverhalten von Wandtafeln mit Kaltprofi len unter horizontalen Lasten“ [11]. Among other tests me- Z A b = 600 to 625 mm s Z A bs 625 to 1250 mm tal stud partitions with gypsum fi ber board Figure 21: Loading set-up for Table 9 application under in-plane load (horizontal, and combined with vertical load) ... Continuation on page 15 14
Table 10: Collapse loads for metal stud shear walls from [9] Cladding 1 Cladding 2 Spacing of screws s r [mm] at perimeter Horizontal load F H at collapse [kN] Vertical load F V at collapse [kN] Number of tests Continuation from page 14 ...by varying the spacing of the screw attachment were tested for this research paper. A dimensioning calculation has been Gypsum fi ber board (e.g. Knauf Vidiwall) Cementous fi ber board (e.g. Knauf Aquapanel) Gypsum fi ber board (e.g. Knauf Vidiwall) 100 39.8 0 3 150 33.1 0 3 150 43.6 0 3 Chipboard 150 39.9 0 3 Trapezoid metal sheet 172/150 39.0 0 3 none 200 12.2 30 1 also developed by Bernd Naujoks. The test results shown in table 10 are not dimensioning values ; these are breaking loads with defi ned collapse criteria without statistical consideration or safety factors. The collapse of wooden panel partitions is usually caused by the connections between the board and the wooden framing members. For metal stud partitions, however, the col- 1 3 1 3 1 3 F V F V F V F H lapse can be caused by the buckling of the lower end of the pressure-impacted stud if the spacing of screws is small enough. [11] Additional reinforcements in this area, e.g. corner bracing components increase the load capacity of metal stud shear walls. 260 cm It should, however, be borne in mind that the fi gures stated do not take into account Figure 22: Load set-up for Table 10 125 cm any effects of creeping under permanent loads. Hence, it should be ensured that no permanent loads occur through plastic deformations or the restraint of fl anking components. Drywall shear walls can be used up to 5 stories. Table 11: Comparison of shear capacity of masonry walls and Knauf shear walls Wall type (l=5m, h=3m) Total capacity kN Capacity kN/m Weight of wall kg/m² 120 mm masonry 1) 9 1.8 194 180 mm masonry 1) 15 3.0 299 240 mm masonry 1) 20 4.0 405 ≥ 75 mm Knauf W 111 2) 12 2.4 25 ≥ 100 mm Knauf W 112 2) 19 3.8 50 1) Strength of bricks = 15.0 N/mm² 2) Studs c/c 600 mm. Screw spacing around perimeter 200 mm in both layers. In table 11 the shear load capacity of masonry and Knauf shear walls is stated for walls 3 m high and 5 m long. It shows that the shear capacity of Knauf partitions is comparable to the capacity of conventional masonry with a signifi cantly lower weight. Material values for dimensioning are stated in tables 12 and 13, pg 17. 15
Page 1 and 2: Knauf Seismic Design Edition 08/200
Page 3 and 4: Soft Buildings Advantages: Appropri
Page 5 and 6: Knauf Seismic Design Seismic Zones
Page 7 and 8: Knauf Seismic Design Less Weight -
Page 9 and 10: Knauf Seismic Design Applications N
Page 11 and 12: Table 6: Maximum Resistible Horizon
Page 13: Table 8: Knauf Suspenders 0.25 kN A
Page 17 and 18: Knauf Seismic Design Material Value
Page 19 and 20: Table 14: Selected international st

Knauf Seismic Design

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