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What is hollowcore plank?


Hollowcore is a prestressed concrete plank that is produced in quality controlled environment to your specifications ready to be delivered to your jobsite. Hollowcore plank consist of circular cores running the full length of the slab which reduces the weight as compared to a solid concrete slab. The concrete slabs are used in commercial and industrial markets as well as residential applications.

The manufacturing process consists of pouring a zero slump concrete mix that is extruded along a bed in a single slab. After the concrete has cured, usually between 2500-3000 psi in 12 hours, the prestressed strands are detensioned and the plank are cut to length and stored until they are loaded for delivery to the jobsite.

Advantages of hollowcore:

 

* These load charts are for estimates only. Please contact our engineering department for specific loading requirements.

8" x 48" Hollowcore Load Table - No Concrete topping

Strand Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
8S38-1.75
257
186
137
102
75
55
40
-
-
-
-
-
-
8S48-1.75
350
258
194
148
113
87
67
51
38
-
-
-
-
8S58-1.75
369
314
241
186
146
114
90
71
55
42
32
-
-
8S68-1.75
381
325
281
232
184
146
117
94
76
60
48
37
-
8S78-1.75
393
335
290
255
214
172
140
113
92
75
61
49
38

 

8" x 48" Hollowcore Load Table - 2" Concrete topping

Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
T8S38-1.75
343
248
182
134
99
72
51
31
-
-
-
-
-
T8S48-1.75
451
346
260
198
151
116
88
62
38
-
-
-
-
T8S58-1.75
465
395
335
259
202
159
125
91
65
43
-
-
-
T8S68-1.75
478
406
351
307
242
193
154
120
89
64
44
-
-
T8S78-1.75
491
417
361
316
279
238
187
146
113
85
62
42
-

10" x 48" Hollowcore Load Table - No Concrete topping

Strand Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
10S68-1.75
492
420
364
320
261
210
170
139
113
92
75
60
48
37
-
-
-
-
10S78-1.75
507
433
376
330
294
249
204
167
138
114
94
78
63
51
41
32
-
-
10S88-1.75
521
445
386
340
302
271
236
195
162
135
113
94
78
65
53
43
34
-
10S98-1.75
535
457
397
350
311
279
252
221
185
155
130
110
92
78
65
54
44
35
10S108-1.75
551
471
410
361
321
288
261
237
205
173
146
124
105
89
75
63
53
43

 

10" x 48" Hollowcore Load Table - 2" Concrete topping

Strand Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
T10S68-1.75
585
498
431
378
328
263
213
172
140
113
90
67
48
31
-
-
-
-
T10S78-1.75
601
512
443
389
344
308
256
210
173
142
114
89
67
49
33
-
-
-
T10S88-1.75
615
524
454
398
353
316
285
247
205
170
137
109
86
66
49
34
-
-
T10S98-1.75
630
537
465
409
363
325
292
265
235
193
158
129
104
82
64
48
34
-
T10S108-1.75
647
552
478
420
373
334
301
273
249
216
178
147
120
97
78
61
46
34

12" x 48" Hollowcore Load Table - No Concrete topping

Strand Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
50'
52'
54'
12S68-1.75
602
514
446
393
338
273
222
182
150
123
101
82
67
53
42
32
-
-
-
-
-
12S78-1.75
620
530
460
405
360
324
266
220
183
152
127
105
87
72
58
47
37
-
-
-
-
12S88-1.75
637
544
473
417
371
333
301
257
215
180
152
127
107
90
75
62
50
41
32
-
-
12S98-1.75
653
559
486
428
381
342
310
282
245
207
176
149
126
107
91
76
64
53
43
34
-
12S108-1.75
673
576
501
442
394
354
320
291
266
233
198
169
145
124
106
90
76
64
53
44
36

 

12" x 48" Hollowcore Load Table - 2" Concrete topping

Strand Designation
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
50'
52'
54'
T12S68-1.75
691
588
510
447
397
326
265
216
177
144
117
95
76
59
45
32
-
-
-
-
-
T12S78-1.75
709
604
524
460
408
365
319
263
217
180
149
123
101
83
66
50
35
-
-
-
-
T12S88-1.75
726
619
537
472
419
375
338
307
257
215
180
151
126
105
87
68
52
38
-
-
-
T12S98-1.75
743
634
550
483
429
385
347
315
287
249
210
178
150
127
104
84
67
52
39
-
-
T12S108-1.75
763
651
565
497
442
396
357
325
296
271
240
204
174
146
121
100
82
66
51
39
-

16" x 48" Hollowcore Load Table - No Concrete topping

Strand Designation
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
50'
52'
54'
56'
58'
16S78-1.75
392
332
282
241
206
177
152
131
113
96
82
70
58
49
40
-
16S88-1.75
455
387
330
284
245
212
183
159
138
120
104
89
77
66
56
47
16S98-1.75
518
441
378
326
282
245
214
187
163
143
125
109
95
82
71
61
16S108-1.75
579
494
425
368
320
279
244
214
188
166
146
128
113
99
86
75
16S118-1.75
639
547
471
409
356
312
274
241
213
188
166
147
130
115
101
89

 

16" x 48" Hollowcore Load Table - 2" Concrete topping

Strand Designation
28'
30'
32'
34'
36'
38'
40'
42'
44'
46'
48'
50'
52'
54'
56'
58'
T16S78-1.75
446
378
321
275
201
173
149
129
109
93
80
66
56
46
-
-
T16S88-1.75
519
441
376
324
279
242
209
181
157
137
119
101
88
75
64
54
T16S98-1.75
590
503
431
372
321
279
244
213
185
163
143
124
108
94
81
70
T16S108-1.75
660
563
485
420
365
318
278
244
214
189
166
146
129
113
98
86
T16S118-1.75
728
624
537
466
406
356
312
274
243
214
189
168
148
131
115
101