×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

H-3 Occupancy Class Ventilation

H-3 Occupancy Class Ventilation

H-3 Occupancy Class Ventilation

(OP)
First time here!
So I have a room that is designated as H-3 occupancy. Room size: 50' long x 35 wide x 24'High. I am using 1 CFM per sq. ft. for ventilation rate.
Room has 2 fire rated doors with fuseable links in case of fire. Doors will remain open during occupancy and while the plant is running.
Doors are 12'x12'=144 x 2 = 288 sq. ft. No way to maintain room negative pressure realistically. I am using an 8 ton 100% O/A roof top unit for
supply, room design temp is 85 degrees DBF, and (2) exhaust fans for exhaust. Duct for exhaust will be down low for floor sweep to pick up contaminants which are heavier than air.
Room has fire rated walls and containment floor trench. Can I just forget about the room pressure and just add a little extra exhaust and pull air from
adjoining rooms through roll up doors or does the H-3 room have to be under negative pressure?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources

eBook - Efficient and Effective Production Support with 3D Printed Jigs and Fixtures
Jigs and fixtures offer manufacturers a reliable process for delivering accurate, high-quality outcomes, whether for a specific part or feature, or for consistency across multiples of parts. Although the methodologies and materials for producing jigs and fixtures have evolved beyond the conventional metal tooling of years past, their position as a manufacturing staple remains constant due to the benefits they offer. Download Now
Overcoming Cutting Tool Challenges in Aerospace Machining
Aerospace manufacturing has always been on the cutting edge, from materials to production techniques. However, these two aspects of aerospace machining can conflict, as manufacturers strive to maintain machining efficiency with new materials by using new methods and cutting tools. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close