[Equest-users] Input F-Factor for Slab-on-grade floor in eQUEST?

[Nick Caton]

Hi Yu,

 

I would first advise bookmarking and using the mailing list archives in the future ¨C this particular question has been asked and answered many times.  

 

Attached is one such thread for your convenience ;).

 

Briefly, users of eQuest simply define slab materials/properties to match the prescribed F-factor, as defined in 90.1 Appendix A.

 

~Nick

 

 

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of ??
Sent: Wednesday, August 31, 2011 10:02 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Input F-Factor for Slab-on-grade floor in eQUEST?

 

Hi all,

 

ASHRAE 90.1 defines baseline slab-on-grade floor conduction by F-factor, but it seems eQUEST uses U-factor to calculate ground (and perimeter maybe) heat transfer (link to a construction like other surface type). There is a ¡°Slab-on-Grade F-Factor¡± box in <Underground Surface Properties> dialog, but the value is not editable. Does anyone know how to input a known f-factor for slab-on-grade floor in eQUEST? Many thanks.

 

Regards

 

Yu Liu

 

elaneinside at hotmail.com

 

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