Steel Strong-Wall® Shearwalls: Two-Story Stacked on Concrete Foundations

Simpson Strong-Tie offers a complete stacked-wall solution for two-story applications. This Steel Strong-Wall® Shearwall option combines simplified installation with superior performance.

Some of the highest loads in the industry, and design procedures that account for cumulative overturning, see Cumulative Overturning for more information.
Complete concrete-anchorage designs for two-story applications (foundation design by Designer)
No bearing plates to install, walls can now be placed flush against a corner.
Uses the same anchor bolt template as single-story installation.
Compression loads transferred by nut/rod — reducing wood crushing under load.

Complete kit available to simplify the connection between the walls.

See Installation Information.

Two-Story Stacked Installation

U.S. Patent 8,281,551; 8,689,518
Canadian Patent 2,489,845

Two-Story Stacked Wall Product Data - Bottom Walls
Model No.	W (in.)	H (in.)	T (in.)	Anchor Bolts		Number of Screws in Top of Wall
Model No.	W (in.)	H (in.)	T (in.)	Qty.	Dia. (in.)	Number of Screws in Top of Wall
SSW15x8-STK	15	93 1/4	3 1/2	2	1	6
SSW18x8-STK	18	93 1/4	3 1/2	2	1	9
SSW21x8-STK	21	93 1/4	3 1/2	2	1	12
SSW24x8-STK	24	93 1/4	3 1/2	2	1	14
SSW15x9-STK	15	105 1/4	3 1/2	2	1	6
SSW18x9-STK	18	105 1/4	3 1/2	2	1	9
SSW21x9-STK	21	105 1/4	3 1/2	2	1	12
SSW24x9-STK	24	105 1/4	3 1/2	2	1	14
SSW15x10-STK	15	117 1/4	3 1/2	2	1	6
SSW18x10-STK	18	117 1/4	3 1/2	2	1	9
SSW21x10-STK	21	117 1/4	3 1/2	2	1	12
SSW24x10-STK	24	117 1/4	3 1/2	2	1	14
SSW15x11-STK	15	129 1/4	5 1/2	2	1	6
SSW18x11-STK	18	129 1/4	5 1/2	2	1	9
SSW21x11-STK	21	129 1/4	5 1/2	2	1	12
SSW24x11-STK	24	129 1/4	5 1/2	2	1	14
SSW15x12-STK	15	141 1/4	5 1/2	2	1	6
SSW18x12-STK	18	141 1/4	5 1/2	2	1	9
SSW21x12-STK	21	141 1/4	5 1/2	2	1	12
SSW24x12-STK	24	141 1/4	5 1/2	2	1	14
SSW18x13-STK	18	153 1/4	5 1/2	2	1	9
SSW21x13-STK	21	153 1/4	5 1/2	2	1	12
SSW24x13-STK	24	153 1/4	5 1/2	2	1	14