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Vulcraft Steel Roof and Floor Deck Catalog - University of Maryland ...

Vulcraft Steel Roof and Floor Deck Catalog - University of Maryland ...

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3N ALLOWABLE DIAPHRAGM SHEAR STRENGTH (PLF)<br />

SUPPORT FASTENERS: #12 TEK screws<br />

SIDELAP FASTENERS: #10 TEK screws Factor <strong>of</strong> safety = 2.35<br />

Fastener<br />

SPAN (FT.-IN.)<br />

Layout * 8’-0 8’-6 9’-0 9’-6 10’-0 10’-6 11’-0 11’-6 12’-0 12’-6 13’-0 13’-6 14’-0 15’-0 K1<br />

Type 22 2 127 118 110 0.627<br />

3 160 150 140 132 124 117 111 105 100 0.503<br />

4 194 181 170 160 151 143 135 129 122 117 111 106 102 94 0.420<br />

24/4 5 228 213 200 188 178 168 160 152 145 138 132 126 121 112 0.360<br />

6 259 245 230 217 205 194 184 175 167 160 153 146 140 130 0.315<br />

7 284 270 258 245 232 220 209 199 190 181 174 166 160 148 0.281<br />

8 308 294 280 268 257 246 233 222 212 203 194 186 179 166 0.253<br />

9 330 315 302 289 277 266 256 246 235 225 215 206 198 184 0.230<br />

10 351 336 322 309 297 285 275 265 256 246 236 226 217 202 0.211<br />

11 370 355 341 328 315 304 293 282 273 264 255 246 237 220 0.195<br />

D3N = 653 K2 = 870<br />

Type 20 2 156 145 136 0.691<br />

3 197 184 172 162 153 145 137 130 124 0.554<br />

4 238 223 209 197 186 176 167 158 151 144 138 132 126 116 0.463<br />

24/4 5 279 261 245 231 218 207 196 187 178 170 163 156 149 138 0.397<br />

6 314 299 282 266 251 238 226 215 206 196 188 180 173 160 0.348<br />

7 345 328 313 299 284 269 256 244 233 223 213 204 196 182 0.309<br />

8 374 356 340 326 312 299 286 272 260 249 238 229 220 203 0.279<br />

9 401 383 366 351 337 324 311 300 287 275 264 253 243 225 0.253<br />

10 426 408 391 375 360 347 334 322 310 300 289 277 266 247 0.232<br />

11 450 431 414 398 383 369 355 343 331 320 310 300 290 269 0.214<br />

D3N = 488 K2 = 1056<br />

Type 18 2 211 197 184 0.795<br />

3 265 248 232 219 206 195 185 176 168 0.638<br />

4 319 299 281 264 250 237 225 214 204 195 186 178 171 158 0.532<br />

24/4 5 373 350 329 310 293 278 264 251 240 229 219 210 202 187 0.457<br />

6 416 395 376 356 337 319 304 289 276 264 253 242 233 215 0.400<br />

7 457 435 414 396 379 361 343 327 312 299 286 275 264 244 0.356<br />

8 495 472 451 431 413 396 381 365 348 333 319 307 295 273 0.320<br />

9 531 507 485 465 446 428 412 397 382 368 353 339 326 302 0.291<br />

10 564 540 518 497 477 459 442 426 411 397 384 371 357 331 0.267<br />

11 595 571 548 527 507 488 470 454 438 424 410 397 385 360 0.247<br />

D3N = 321 K2 = 1398<br />

Type 16 2 269 252 236 0.890<br />

3 338 316 297 280 264 250 237 226 215 0.714<br />

4 406 380 358 337 319 302 287 273 261 249 238 228 219 203 0.596<br />

24/4 5 471 445 418 395 374 354 337 321 306 293 281 269 258 239 0.512<br />

6 525 499 475 452 428 407 387 369 352 337 323 310 297 276 0.449<br />

7 576 548 523 499 478 458 436 416 398 380 365 350 337 312 0.399<br />

8 624 595 569 544 521 500 480 462 443 424 407 391 376 349 0.359<br />

9 670 640 612 586 563 540 520 500 482 466 449 431 415 385 0.327<br />

10 712 681 653 627 602 579 557 537 519 501 484 469 454 422 0.300<br />

11 751 720 692 665 639 616 594 573 553 535 518 501 486 457 0.277<br />

D3N = 226 K2 = 1764<br />

* = number <strong>of</strong> sidelap fasteners per span<br />

G' =<br />

K 2<br />

4.31 + 0.3*D 3N + 3*K 1 * SPAN<br />

SPAN<br />

SPAN is in feet<br />

, Kips/inch<br />

84

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