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, both 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 :

Alex Sari

Outside Sales Representative

[email protected]

(509) 992-5614

Zak Perkerewicz

Outside Sales Representative

[email protected]

(503) 545-3284

Product Family

See featured product related to Hollowcore assemblies

All Products

Beams

Precast/Prestressed beams can be fabricated in almost any shape required for your project. The most common shapes are inverted tee, L-shaped and rectangular profiles. Precast/Prestressed beams are commonly used in parking structures, total precast ...

View Product

Column

Precast concrete columns can be designed as single or multi-story units, up to 40+ feet tall depending on project needs. Column length is often dictated by the onsite crane size (stick or tower cranes may be used) and columns can be stacked using spl...

View Product

Double Tee

Knife River’s double tee precast units are designed to maximize span to depth ratios, achieving spans up to 80 feet long. The long span capabilities make them ideal for parking garage drive aisles, industrial/data center floors, and roof system...

View Product

Hollowcore

View Product

Insulated Wall Panel

High Performance CarbonCAST insulated wall panels are typically used in Data Centers, K-12/Higher Education Schools, Distribution Centers, Warehouses or where interior environments and higher thermal efficiencies are required. CarbonCAST panels are f...

View Product

Insulated Wall Panel

View Product

Lite/Shear Wall

Designed to help resist the lateral-loads, precast shear walls are the structural backbone of your project. Precast shear walls can be solid or have centered blockouts to increase interior light (“Lite Wall”). Shear walls typically serve as the fra...

View Product

Solid Wall Panel

Solid precast panels are used in a wide variety of building scenarios both horizontally and vertically orientated. Solid precast panels do not have any voids (typically to reduce weight) or insulation (to optimize thermal performance) included, but ...

View Product

Cookie	Duration	Description
cookielawinfo-checkbox-advertisement	1 year	Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category .
cookielawinfo-checkbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
CookieLawInfoConsent	1 year	Records the default button state of the corresponding category & the status of CCPA. It works only in coordination with the primary cookie.
JSESSIONID	session	The JSESSIONID cookie is used by New Relic to store a session identifier so that New Relic can monitor session counts for an application.
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.

Cookie	Duration	Description
_ga	2 years	The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors.
_gat_gtag_UA_207329799_1	1 minute	Set by Google to distinguish users.
_gid	1 day	Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously.

Hollowcore

Span Length

Hollowcore Load Table - Max Live Load (PSF)

Product Information

Standard Design Options

3D Viewer

3D Viewer Tools

Need More Info?

We Are Here to Help

Product Family

Beams

Column

Double Tee

Hollowcore

Insulated Wall Panel

Insulated Wall Panel

Lite/Shear Wall

Solid Wall Panel

Projects

Commercial

Industrial

Institutional

Residential

Transportation

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