Top-rated structural engineers.

Get matched with top structural engineers in O Fallon, MO

There are 4 highly-rated local structural engineers.

Need a pro for your structural engineering project in O Fallon, MO?

Select your specific project to find the pro for you.

Verified Reviews for Structural Engineering pros in O Fallon, MO

*The Angi rating for Structural Engineering companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

*The HomeAdvisor rating for Structural Engineering companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

Last update on October 06, 2025

Find Structural engineers in O Fallon

No results for Structural Engineering in

Try adjusting your search criteria.
Showing 41-44 of 44
Structural Engineering questions, answered by experts

Many horizontal cracks in home foundations result from water and soil pressure from outside of the building or from a footing that is shifting. Under those circumstances, horizontal cracks are a structural problem that requires repair before they become worse and more difficult to fix. However, in very specific cases, thin horizontal cracks may simply be a cosmetic blemish due to concrete shrinkage.

You should pick steel for your new support beam for a few reasons. While steel is more expensive than other materials, such as laminated veneer lumber or glulam, it offers the following benefits:

  • Fire-resistant

  • Unaffected by pests

  • Longer-lasting

  • Stronger against water damage (when galvanized against rust)

The standard thickness for an LVL beam is between 1.75 inches and 7 inches. However, you can order LVL beams in non-standard sizes as well. When you work with a contractor, they can source beams that are the appropriate size for your project for you after assessing your blueprints.

Precast concrete can be reinforced with rebar, wire mesh, or other materials to improve its strength and add stability. Precast concrete for large construction projects is often pre-stressed as well for greater structural strength. Reinforced concrete is durable and strong, making it an ideal choice for many construction projects.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

By submitting this question, I acknowledge and agree that Angi may publicly display my name, city, state, and question on the website for professionals and others to see.

The O Fallon, MO homeowners’ guide to structural engineering services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles