New Mexico Administrative Code
Title 14 - HOUSING AND CONSTRUCTION
Chapter 7 - BUILDING CODES GENERAL
Part 4 - 2021 NEW MEXICO EARTHEN BUILDING MATERIALS CODE
Section 14.7.4.26 - LINTELS
Current through Register Vol. 35, No. 18, September 24, 2024
A. General. Lintels of wood or concrete are allowed. The bearing length of any lintel shall not be reduced by an angled or splayed window or door opening. Other lintel designs are accepted providing that engineering is submitted for review by the building official.
B. Wood lintels. When an engineer's drawing and seal is not provided for lintels, all wood lintels shall conform to Table 5 and have a fiber stress rating of at least 850 psi.
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Table 5 CEB WALL WOOD LINTEL SCHEDULE |
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MINIMUM FIBER STRESS 850 PSI |
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|
Wall Width |
Max. Span |
Size |
Bearing length on earth wall |
Load Capacity |
|
10" |
4'-0" |
10" x 6" |
12" |
860 PLF |
|
6'-0" |
10" x 8" |
12" |
1020 PLF |
|
|
8'-0" |
10" x 10" |
18" |
1150 PLF |
|
|
10'-0" |
10" x 12" |
24" |
1000 PLF |
|
|
12'-0" |
10" x 14" |
24" |
1000 PLF |
|
|
12" |
4'-0" |
10" x 6" |
12" |
860 PLF |
|
6'-0" |
10" x 8" |
12" |
1020 PLF |
|
|
8'-0" |
10" x 10" |
18" |
1150 PLF |
|
|
10'-0" |
10" x 12" |
24" |
1000 PLF |
|
|
12'-0" |
10" x 14" |
24" |
1000 PLF |
|
|
14" 14" |
4'-0" |
12" x 6" |
12" |
950 PLF |
|
6'-0" |
12" x 8" |
12" |
1150 PLF |
|
|
8'-0" |
12" x 10" |
18" |
1300 PLF |
|
|
10'-0" |
12" x 12" |
24" |
1300 PLF |
|
|
12'-0" |
12" x 14" |
24" |
1200 PLF |
|
C. Concrete lintels. When an engineer's drawing and seal is not provided for lintels, all concrete lintels shall conform to table 6 and have a minimum strength of 3000 psi.
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Table 6 CEB WALL CONCRETE LINTEL SCHEDULE MIN. 3000 psi |
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|
Maximum Span |
Minimum depth* |
Reinforcing |
Maximum Capacity per linear foot |
Bearing length on earth wall |
|
Less than 6' - 0" |
8" |
2 - # 4 |
1500 lbs. |
12" |
|
6' - 0" to 10'- 0" |
12" |
3 - # 5 |
1500 lbs. |
18" |
|
11' - 0" to 16'- 0" |
16" |
3 - # 6 |
1500 lbs. |
24" |
|
* SIZE Wall width X depth of lintel |
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