Total Live and Dead Load lbs/sq ft
Permissable Spans for Center to Center
Spans
Allowable Total Uniform Load lbs/ft
8"
12"
14"
19-1/5"
24"
100
10'6"
6'1"
579
102
6'3"
563
115
6'5"
548
127
6'7"
535
140
10'2"
6'9"
521
152
9'9"
6'11"
509
165
9'4"
7'1"
497
177
10'1"
9'1"
7'3"
486
190
8'9"
7'5"
474
202
10'5"
9'6"
8'6"
7'7"
464
215
9'2"
8'2"
7'9"
454
227
8'11"
7'11"
444
240
8'8"
7'4"
8'1"
436
252
7'0"
8'3"
426
265
6'8"
8'5"
408
277
10'3"
8'10"
6'4"
8'7"
393
290
10'0"
378
302
364
315
9'7"
8'4"
351
327
9'5"
9'3"
338
340
6'6"
326
352
7'6"
316
365
305
377
9'11"
294
390
285
402
10'4"
276
415
267
427
6'2"
440
8'0"
452
465
477
490
7'2"
502