Not all post-installed mechanical anchors are created equal. There are key differences between screw and expansion anchor types — differences that include how they gain their holding strength, installation requirements, and overall anchor performance. In the following post, field engineers Todd Hamilton, Chris Johnson and Derek Gilbert compare the two anchor types.
Author: Simpson Strong-Tie
For more than 50 years, Simpson Strong-Tie has focused on creating structural products that help people build safer and stronger homes and buildings. Considered a leader in structural systems research, testing and innovation, Simpson Strong-Tie is one of the largest suppliers of structural building products in the world.
The company is committed to helping customers succeed by providing exceptional products, full-service engineering and field support, product testing and training. Simpson Strong-Tie works closely with industry professionals to provide code-listed, field-tested products, and value-engineered solutions. Its product lines include Structural Connectors, Fasteners, Wood and Steel Strong-Wall® prefabricated shearwalls, Anchor Tiedown Systems for multi-story buildings, Quik Drive® auto-feed screw driving systems, and Anchor Systems for concrete and masonry. Simpson Strong-Tie products are known for their consistent quality and availability as well as for helping structures resist high winds, hurricanes and seismic forces.
Simpson Strong-Tie has a national sales force and field engineers that are available to assist with specification and jobsite issues. Products are distributed nationally through an extensive network of distributors and dealers.
How to Accommodate Misplaced Shearwall Anchorage
For several years, the Simpson Strong-Tie Strong-Wall® research and development team has kicked around the idea of developing an “adapter” that would allow for field substitutions or accommodate misplaced Strong-Wall anchorage.
Introducing Two New Connectors for Mass Timber Construction: E20/3 Angle Bracket and MTWS Washer Strap
We’ve added two new connectors to our expanding lineup of brackets and straps for mass timber / CLT manufacturers, specifiers and contractors. Introducing the E20/3 angle bracket and MTWS mass timber washer strap.
Both connectors are pre-engineered and code listed for a variety of applications in cross-laminated timber (CLT) and other mass timber projects. Designed to simplify and speed installation, the E20/3 angle bracket and MTWS washer strap are widely available to buy off the shelf, making them a more cost-effective and convenient solution than expensive, custom-fabricated components.
Field-Adjustable Sloped and Skewed Hangers — Introducing New LSSR Sizes
With the recent introduction of our new LSSR rafter hangers for 2x lumber, we thought we’d provide some background on how these new hangers were developed and why.
How a Top US Homebuilder Turbocharged Market Growth and Managed the Job Start Process with the Scalable LotSpec Solution from Simpson Strong-Tie
As one of the top 10 private homebuilders in the US (and one of the top 25 overall), Gehan Homes has explored its fair share of technologies promising efficiency and productivity gains. When it came to pulling home designs, plans, elevations, and options into full job start packets (JSPs), the Texas-based homebuilder managed to generate about 400 JSPs per year before the productivity cost of eight hours each began to limit growth.
Yield-Link® Moment Connections in the Great White North
Resiliency is a term which is becoming more commonplace within the field of structural engineering, not just in North America but worldwide. As part of a nation that prides itself on being progressive, engineers in seismic zones of Canada are already exploring innovative solutions that may help create economic structures with resiliency in mind. But what do we mean by resiliency?
In the fields of engineering and construction, resiliency is the ability of a structure to absorb or avoid damage without suffering complete failure. Structural resiliency is the ability of a building or structure to remain sufficiently sound and intact following a shock event as to allow rapid resumption of normal use.
Case Study: Gruening Middle School’s Seismic Damage Repair Solution
It can be a challenge to repair an earthquake-damaged structure.
During the 7.1-magnitude 2018 Anchorage earthquake, Gruening Middle School in Eagle River sustained more damage than any other school in the Anchorage School District. Review of the school showed the existing masonry walls suffered damage and separation from the roof. During the retrofit design, the Reid Middleton structural engineering team (Anchorage) determined the masonry walls weren’t adequately reinforced to meet current code requirements. They were seeking an easy-to-install strengthening solution that wouldn’t add significant weight to the building.
Building Safe and Strong with Flood-Resistant Construction Workshops
Flooding is one of the few natural disasters that occur commonly throughout all regions of North America. The causes of floods can differ depending on the region, but the impact is nearly always the same. Recent floods have caused billions of dollars in damage annually to structures near the coast as well as inland.
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Introducing Excellence in Engineering Fellow: Juan Carlos Restrepo
We’re excited to introduce the recipient of the 2018–2019 Excellence in Engineering Fellowship: Juan Carlos Restrepo.
This is the second year of the fellowship, a successful partnership between Build Change, a Denver-based international nonprofit social enterprise, and Simpson Strong-Tie, a global leader in innovative structural solutions.
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Happy Independence Day 2018
Thank you for stopping by! We’re taking a brief break today so Simpson Strong-Tie team members can celebrate the Fourth of July with family and friends.
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