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Hollowcore

Hollowcore

Hollow Core Planks are used as horizontal structural members for floor and roof applications such as podiums, mid-rise buildings, Controlled Atmosphere Apple Storage, parking structures and storm water detention vault lids. The benefits of Hollow Core Planks include rapid and economical construction, low maintenance, excellent fire resistance and low sound transmission.

Span Length

Hollowcore Load Table - Max Live Load (PSF)

Span (ft)	8" Composite	8" Non-Composite	12" Composite	12" Non-Composite
18	370	270	460	385
20	325	245	400	310
22	285	220	355	295
24	255	195	315	265
26	230	175	285	235
28	205	160	250	200
30	190	145	230	195
32	160	130	210	185
34	140	110	195	165
36	115	100	175	150
38	90	80	160	140
40	70	65	150	130
42	50	50	135	120
44	30	40	125	110
46	-	35	115	105
48	-	25	105	95
50	-	-	95	90

Product Information

Hollow Core is produced in standard 4′-0″ wide planks that can be saw cut to fit the length and width requirements for the project. A topping slab can be used, bot composite and non-composite, depending on the design requirements.

Standard Design Options

Suspended utility hanger assemblies
Hollowcore hangers for larger blockouts
Hollowcore ripping for narrow planks
4′-0″ nominal Widths

3D Viewer

3D Viewer Tools

3D Viewer Functions:
Move, Span, Zoom Assemblies
Isolate Single Components in View
Explode Assembly Single Components
Use Markup to Sketch Details
General Measurements for Concept
Print Views

Need More Info?

We Are Here to Help

Have a question, need a budget or detailed schedule? Knife River sales team is ready to discuss precast solutions for your project. Reach out to our staff below :

Zak Perkerewicz

Outside Sales Representative

[email protected]

(503) 545-3284

Darren Canepa

Commercial Estimator

[email protected]

(503) 440-8830

Product Family

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Span (ft)	8" Composite	8" Non-Composite	12" Composite	12" Non-Composite
18	370	270	460	385
20	325	245	400	310
22	285	220	355	295
24	255	195	315	265
26	230	175	285	235
28	205	160	250	200
30	190	145	230	195
32	160	130	210	185
34	140	110	195	165
36	115	100	175	150
38	90	80	160	140
40	70	65	150	130
42	50	50	135	120
44	30	40	125	110
46	-	35	115	105
48	-	25	105	95
50	-	-	95	90

Span (ft)	8" Composite	8" Non-Composite	12" Composite	12" Non-Composite
18	370	270	460	385
20	325	245	400	310
22	285	220	355	295
24	255	195	315	265
26	230	175	285	235
28	205	160	250	200
30	190	145	230	195
32	160	130	210	185
34	140	110	195	165
36	115	100	175	150
38	90	80	160	140
40	70	65	150	130
42	50	50	135	120
44	30	40	125	110
46	-	35	115	105
48	-	25	105	95
50	-	-	95	90

Span (ft)	8" Composite	8" Non-Composite	12" Composite	12" Non-Composite
18	370	270	460	385
20	325	245	400	310
22	285	220	355	295
24	255	195	315	265
26	230	175	285	235
28	205	160	250	200
30	190	145	230	195
32	160	130	210	185
34	140	110	195	165
36	115	100	175	150
38	90	80	160	140
40	70	65	150	130
42	50	50	135	120
44	30	40	125	110
46	-	35	115	105
48	-	25	105	95
50	-	-	95	90