# Structural system span- one way slab

**URL:** <https://community.blackspectacles.com/t/structural-system-span-one-way-slab/6984>\
**Category:** Programming & Analysis\
**Created:** [May 26, 2025, 2:00am UTC](https://community.blackspectacles.com/t/structural-system-span-one-way-slab/6984 "2025-05-26T02:00:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kokate](https://blackspectacles.com/uploads/images/4.png) [@kokate](https://community.blackspectacles.com/u/kokate)\
**Post date:** [May 26, 2025, 2:00am UTC](https://community.blackspectacles.com/t/structural-system-span-one-way-slab/6984/1 "2025-05-26T02:00:16Z")

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Hi, For the “selecting the structural system” video in the PA study resource. There is a chart in the video site -cast concrete one way slab span range. it shows that the span range is more than 100’. Now when I was checking this in the ‘Architect’s studio companion’ 6th edition pg. 117; the maximum span is nowhere near 100’ . Can you please correct this or let me know if I am looking at the wrong reference?

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**Author:** ![kokate](https://blackspectacles.com/uploads/images/4.png) [@kokate](https://community.blackspectacles.com/u/kokate)\
**Post date:** [May 26, 2025, 3:37pm UTC](https://community.blackspectacles.com/t/structural-system-span-one-way-slab/6984/2 "2025-05-26T15:37:37Z")

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Checked on pg. 31 on ASC 6th edition. BS chart is wrong

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**Author:** ![kiaragalicinao](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.blackspectacles.com/kiaragalicinao/32/1607_2.png) [@kiaragalicinao](https://community.blackspectacles.com/u/kiaragalicinao)\
**Post date:** [May 30, 2025, 7:08pm UTC](https://community.blackspectacles.com/t/structural-system-span-one-way-slab/6984/3 "2025-05-30T19:08:04Z")

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Hi @kokate, thank you for bringing this to our attention! I checked your reference to Architect’s Studio Companion and you are correct - there appears to be a discrepancy in the chart. I’ve passed this along to our Learning Team so that they can review and make appropriate adjustments as needed.

Also another heads up - **please do not post screenshots of paid content to this forum**. If you need to reach out with specific screenshots, please do so via [support@blackspectacles.com](mailto:support@blackspectacles.com) or direct message to me. Failure to abide by community rules will affect your ability to use the forum.

Your screenshot has been removed from the post.

Thank you,

Kiara Galicinao, AIA, NCARB  
**Black Spectacles**