Mat & Raft Foundations
MAT & RAFT FOUNDATIONS FOR HEAVY COMMERCIAL LOADS
Mat (raft) foundations are thick, heavily reinforced concrete slabs that spread building loads across the entire footprint — used when soil bearing capacity is low or when individual footings would overlap. We pour mat foundations for commercial buildings, industrial facilities, elevator pits, and mechanical equipment bases. Mat design includes engineered reinforcement schedules, proper concrete placement sequencing for large pours, and temperature control during curing.
Key Highlights
Full-footprint slab
distributes building loads across the entire foundation area.
Heavy reinforcement
engineered rebar mats for structural load distribution.
Large pour management
proper sequencing, vibration, and temperature control for mass concrete.
Why Choose Our Mat & Raft Foundations
Mat foundations are engineered for situations where individual footings would overlap or where soil bearing capacity requires load distribution across the maximum area. We pour mat foundations for commercial buildings, elevator pits, and heavy equipment bases with engineered reinforcement, proper concrete placement sequencing, and temperature management for large pours.
Signs You Need Mat & Raft Foundations
1. Heavy concentrated loads
Building loads require more footing area than individual footings can provide, necessitating a continuous slab foundation.
Our Process
Step 1 — Engineering
Structural engineer designs mat thickness, reinforcement, and placement sequence.
Step 2 — Excavation and prep
Excavate to design depth, prepare subgrade, and install waterproofing and drainage.
Step 3 — Reinforcement and pour
Install heavy rebar mats, pour concrete in engineered sequence, vibrate, and cure.
Brands & Materials
- Cemstone mass concrete mixes
- Harris rebar
FAQs About Mat & Raft Foundations
How thick is a mat foundation?
Mat foundations typically range from 12 inches to 6+ feet thick depending on building loads and soil conditions. The design is site-specific, based on structural engineering calculations using actual soil bearing data and building load distribution.
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You Get More Than a Guarantee
When you choose Legacy General Services for your concrete project in the NW Metro, you're choosing a partner committed to quality that lasts.
Reputation
MN-registered contractor since 2023. Insured and trusted by homeowners across the NW Metro.
Transparency
No hidden fees or surprise charges. Upfront pricing on every concrete project—big or small, start to finish.
Efficiency
On-time scheduling and reliable project timelines. We show up when we say we will and finish on schedule.
Quality
Air-entrained, freeze-thaw resistant concrete built for Minnesota winters. Every pour meets or exceeds code.