Page 161 - 2018_IRC

FLOORS

SUBFLOOR OR
BOTTOM WALL STUDS FLOOR SHEATHING– JOISTS–SEE TABLES
SEE SECTION R503
PLATE R502.3.1(1) AND R502.3.1(2)

SILL PLATE
WOOD STRUCTURAL
OPTIONAL FINISH
FLOOR

GIRDER-SEE
SECTION R502.5

BAND, RIM OR
HEADER JOIST

2 IN. CLEARANCE TRIMMER JOIST
SEE SECTION
R1001.11

HEADER-DOUBLE IF
MORE THAN 4 FT. SPAN
FIREPLACE
USE HANGER IF HEADER
SPANS MORE THAN
6 FT.

SOLID
BLOCKING–SEE
SECTION R502.7 LAP JOIST 3 IN. MIN. OR
SPLICE–SEE SECTION
R502.6.1

SILL PLATE

FOUNDATION BRIDGING BETWEEN
JOISTS–SEE SECTION
R502.7.1

PROVISION FOR PIPES
AND VENTS
DOUBLE JOISTS UNDER BEARING
PARTITIONS. IF JOISTS ARE
SEPARATED FOR PIPES, BLOCK
4 FT. ON-CENTER MAXIMUM

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
FIGURE R502.2
FLOOR CONSTRUCTION

136 2018 INTERNATIONAL RESIDENTIAL CODE ®
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