BOAF Interpretations

Interpretations Request Input

Original Request

Request ID: 8565
Requested By: David Toth
Requester E-Mail: david_tntbuilders@comcast.net
Code Version: 2021
Code: RESIDENT
Code Description:
Chapter:
Section: R606.3.4
Topic: Clearnce of rebar and masonry
Question: In a masonry filled cell, can the dowel or down bar rest against the cement block and still have minimal clearance required ?
Comment: None

Existing Interpretations and/or Declaratory Statements Related to this request

Input Received:

Based upon the language - no. Bars shall be completely embedded in mortar or grout. Joint reinforcement embedded in horizontal mortar joints shall not have less than 5/8-inch (15.9 mm) mortar coverage from the exposed face. Other reinforcement shall have a minimum coverage of one bar diameter over all bars, but not less than 3/4 inch (19 mm), except where exposed to weather or soil, in which case the minimum coverage shall be 2 inches (51 mm).

Larry Schneider on 09/14/2021 at 6:19 PM

I agree with Mr. Schneider.

Thomas Allen on 09/15/2021 at 6:05 PM

Answer:

On 09/30/2021 at 1:28 PM

Commentary:

None.

Comments on Draft:

Agreed

Thomas Allen on 09/30/2021 at 2:08 PM

I am not so sure, what about R606.3.5.3(4.) " 4.The thickness of grout or mortar between masonry units and reinforcement shall be not less than 1/4 inch (6.4 mm), except that 1/4-inch (6.4 mm) bars shall be permitted to be laid in horizontal mortar joints not less than 1/2 inch (12.7 mm) thick, and steel wire reinforcement shall be permitted to be laid in horizontal mortar joints not less than twice the thickness of the wire diameter." It appears to me that it cannot rest against the inner wall of the cmu but only requires a minimum of 1/4"

Michael Grimm on 09/30/2021 at 4:48 PM

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