Brick veneer on shelf angles

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	HOW YOU CAN LAY BRICK VENEER ON AN 8" FOUNDATION WALL.

MOST BUYERS PREFER BRICK . . . and many tract home builders would like to offer brick homes as an option. However, since house foundations in most areas are poured weeks prior to a house sale, usually the most economical, 8" foundation is poured, in lieu of the 12" foundation that is commonly thought necessary for brick veneer.

Now there is another system, that allows the tract or custom builder to pour that economical 8" foundation, and later still decide to put on a brick veneer front, or even an"all-brick"house. He can use that 8" foundation and/or use steel angles and anchor bolts. The following illustrations are three case examples of HOW YOU CAN BRICK VENEER ON AN 8" FOUNDATION WALL.




		CASE #1 6" anchor bolts are installed4' o.c. as foundation wall or cap is poured.




		CASE #2 Anchor bolts are NOT put in as concrete is poured.




	CASE #3 Pour 8" foundation Anchor 2 x 4 still into foundation Frame floor joist in conventional manner Provide 1" air space Project brick veneer approximately 1" beyond foundation edge


	NOTE: Code requirements are the same for flashing, weepholes, ties and spacing. Calculations to allow for the above case examples are shown below:

NOTE: ASSUME WALL HEIGHT IS 30'-0"

CASE EXAMPLE #1

BOLTS INSTALLED AT TIME OF CONCRETE POURING.

(6" 'J' Bolts @ 4'-0" o.c. w/5" Emb.)

W = 0.12k x 30' x 4"/12" = 1.2k/ft.

P = 4(1.2) = 4.8k/bolt

ANGLE: As per AISC

M = [ (1.2(4)^2)/ 8] 12 = 28.8k"

fb = 28.8 / 1.29 = 22.33 ksi<24 ksi: THEREFORE ANGLE O.K.

BOLT: Williams Bolt Catalogue

C = (3.625" /2 ) + (3" /4) + (5 "/ 16) = 2.875"

T = (4.8 (2.875))/(4/2) = 6.9k/bolt<10 8k/bolt THEREFORE BOLT O K

V = 4.8k/bolt< 1 2.0k/bolt

CONCRETE: ACI 531

P'u = 4 (phi) (sqaure root of f''c) Aeff

phi = .85

f'c = 3000psi

P'u = 4(0.85) (3000)^.5 (58.73)

P'u = 10.93k/bolt > 6.9k / bolt : THEREFORE CONCRETE IS OK

CASE EXAMPLE #2

USING 1/2" PHI X 6" HILTI KWlK-Bolt @ 4'-0" o.c. with

5" min. emb. bolts installed after concrete pour.

1. Angle is OK from Case #1

2. Concrete is OK from Case #1

3. By linear interpolation :

V = 9.52k/bolt>4.8k/bolt

T = 9 .7K/bolt~6.9 /holt

4. Assembly is adequate.


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