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Showing 121 - 144 of 170 results:

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The flat retrofit foundation plate is used to connect the concrete foundation to the sill plate from the exterior of the building as part of a seismic retrofit

The flat retrofit foundation plate is used to connect the concrete foundation to the sill plate from the exterior of the building as part of a seismic retrofit
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The flush cut method for seismic retrofit bracing of a cripple wall allows the plywood sheathing to be attached directly to both the cripple studs and the notched section of the mudsill

The flush cut method for seismic retrofit bracing of a cripple wall allows the plywood sheathing to be attached directly to both the cripple studs and the notched section of the mudsill
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The national risk of earthquake in the United States as of 2023.

The national risk of earthquake as of 2023.
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The polyethylene ground cover in the crawlspace is continuous at interior posts and piers

The polyethylene ground cover in the crawlspace is continuous at interior posts and piers
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The post-and-pier foundation of this home failed in an earthquake

The post-and-pier foundation of this home failed in an earthquake
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The reverse block method for seismic retrofit bracing of a cripple wall uses a 2x4 attached to the sill plate to provide a means to attach the plywood cripple wall sheathing to the sill plate

The reverse block method for seismic retrofit bracing of a cripple wall uses a 2x4 attached to the sill plate to provide a means to attach the plywood cripple wall sheathing to the sill plate
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The universal retrofit foundation plate is used to connect the concrete foundation to the sill plate as part of a seismic retrofit

The universal retrofit foundation plate is used to connect the concrete foundation to the sill plate as part of a seismic retrofit
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The walls of this unreinforced masonry house crumbled in an earthquake.

The walls of this unreinforced masonry house crumbled in an earthquake.
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These State of California-approved seismic gas shutoff valves (also known as earthquake valves) are installed on the fuel line from the meter to the home to stop the flow of natural gas if the sensor detects ground movement above about 5.4 (Richter)

These State of California-approved seismic gas shutoff valves (also known as earthquake valves) are installed on the fuel line from the meter to the home to stop the flow of natural gas if the sensor detects ground movement above about 5.4 (Richter)
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This brick chimney was damaged during an earthquake.

This brick chimney was damaged during an earthquake.
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This chimney was not adequately attached to the structure and fell away during an earthquake

This chimney was not adequately attached to the structure and fell away during an earthquake
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This fuel tank sits at grade but is anchored through its concrete base to the ground beneath with helical earth anchors

This fuel tank sits at grade but is anchored through its concrete base to the ground beneath with helical earth anchors
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This house slid off its post-and-pier foundation in an earthquake.

This house slid off its post-and-pier foundation in an earthquake.
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This masonry chimney completely crumbled in an earthquake

This masonry chimney completely crumbled in an earthquake
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This State of California-approved seismic gas shutoff valve will stop the flow of natural gas from the meter into the home if significant seismic activity is detected.

This State of California-approved seismic gas shutoff valve will stop the flow of natural gas from the meter into the home if significant seismic activity is detected.
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This underground fuel tank is anchored to a concrete base to resist buoyancy forces

This underground fuel tank is anchored to a concrete base to resist buoyancy forces
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This wood-framed wall is connected with framing anchors, metal strapping and ties, and anchor bolts to secure the roof to the walls and walls to the foundation

This wood-framed wall is connected with framing anchors, metal strapping and ties, and anchor bolts to secure the roof to the walls and walls to the foundation
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Three different anchoring methods are shown for making the home more resistant to getting moved off its foundation in an earthquake.

Three different anchoring methods are shown for making the home more resistant to getting moved off its foundation in an earthquake.
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Three types of foundation walls: Stem-plus-wood stud cripple wall, reinforced concrete wall, and reinforced concrete block/masonry wall

Three types of foundation walls: Stem-plus-wood stud cripple wall, reinforced concrete wall, and reinforced concrete block/masonry wall
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To increase a masonry-walled home’s resistance to seismic forces, solid wood blocking is added between the roof rafters, anchors are added to connect the brick wall to the rafters and floor joists, building diaphragms are added, foundation braced

To increase a masonry-walled home’s resistance to seismic forces, solid wood blocking is added between the roof rafters, anchors are added to connect the brick wall to the rafters and floor joists, building diaphragms are added, foundation braced
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Top view showing how the chimney is attached to at least four ceiling joists running parallel to the exterior wall.

Top view showing how the chimney is attached to at least four ceiling joists running parallel to the exterior wall.
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Top view showing how the chimney is attached to ceiling joists that run perpendicular to the exterior wall.

Top view showing how the chimney is attached to ceiling joists that run perpendicular to the exterior wall.
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Tornado, Hurricane, and Earthquake Risk Profile of 379 U.S. Urban Areas

Tornado, Hurricane, and Earthquake Risk Profile of 379 U.S. Urban Areas
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Turn valve clockwise from vertical (aligned with piping) to horizontal (perpendicular to piping) to shut off gas

Turn valve clockwise from vertical (aligned with piping) to horizontal (perpendicular to piping) to shut off gas