Dr means design is required in accordance with the applicable building code or where there is no code in accordance with aci 318.
Nominal thickness irc concrete walls.
Minimum nominal wall thickness inches 8 10 12 8 10 12 8 10 12 8.
An 8 foot high flat concrete foundation wall of nominal 10 inch thickness is subjected to 6 feet of unbalanced backfill.
Foam plastic panels are 1 45 pcf nominal density 2 75 in thick and the concrete wall thickness is 4 6 8 10 or 12 inches.
Quick reference to pages of guide.
See table r608 3 for tolerance from nominal thickness permitted for flat walls.
Concrete walls constructed in accordance with these provisions shall comply with the shapes and minimum concrete cross sectional dimensions of table r608 3.
R608 3 1 flat wall systems.
The appropriate depth of the wall depends on several factors and there is no single standard for every home.
The thickness or depth of concrete basement walls plays an integral role in their long term strength and durability.
Concrete foundation walls shall comply with the following.
Anchor bolts are generally required to anchor the wood framing of the superstructure to the concrete elements of the foundation.
Stronghold stay in place concrete forms conform to astm e 2634 standard specification for ice as referenced in irc r404 1 3 3 6 1 irc r r608 4 4 and ibc 1903 4.
D no vertical reinforcement required.
Concrete wall forms set for residential foundation showing a nominal 8 in.
Concrete masonry is used to construct various foundation wall types including full basement walls crawlspace walls stem walls and piers.
The thickness shall comply with the requirements of table 1807 1 6 2.
The irc minimum is 6 in.
Wall thickness with an actual thickness set at 7 5 8 in.
Concrete masonry is well suited for below grade applications because of its strength durability economy and resistance to fire insects and noise.
R608 3 concrete wall systems.
Concrete foundation walls support the home standing above so any weakness can undermine the stability of the house.
C 6 at 43 o c.
B 5 at 47 o c.
If the soil class is gp what is the minimum vertical reinforcement required.
Wood in contact with concrete is generally required to be preservative treated against decay as concrete tends to wick soil moisture.
A 4 at 38 o c.
Vertical reinforcement with a minimum yield strength of 40 000 psi 276.
The size and spacing of vertical reinforcement shown in table 1807 1 6 2 is based on the use of reinforcement with a minimum yield strength of 60 000 pounds per square inch psi 414 mpa.
The irc provides three examples of wall systems that are commonly used and the minimum parameters for each in section r608 3.
