Frequently Asked Engineering Questions

In typical handset settings, panels can be struck once concrete cylinder tests or maturity sensors indicate the deck has reached 1,500 to 2,000 PSI (usually 36 to 48 hours depending on cement mix and ambient temperatures). Re-shoring props must remain tightly in location until full design calculations (e.g. 4,000 PSI at 28 days) are crossed.

European EN 1065 standards classify props into Classes A through E. Class D props specify a minimum capacity of 20 kN (approx. 4,500 lbs) at any extension level, whilst Class E props carry 30 kN (approx. 6,700 lbs). Proper class selection is determined by Slabforms CAD laydown calculations based on wet concrete thickness.

OSHA Part 1926.701 dictates that all shoring props placed on raw earth or un-compacted sand must rest on flat timber mudsills. Mudsills disperse axial gravity load across a broader area, preventing individual props from sinking or settling during active concrete placement which leads to deck failures.

For commercial safety, telescopic steel or aluminum props must be plumbed to within 1.5% of overall height (approx. 1 inch of drift over 6 feet). Eccentric loading outside this margin causes prop buckling capacities to fall exponentially and violates ANSI A10.9 specifications.

Yes. Our specialized engineering desk drafts localized CAD setups displaying prop spacing grid lines, timber or aluminum beam calculations, and edge perimeter safety. On request, we provide state-registered Professional Engineer (P.E.) stamps for building department submittals.

We support flexible commercial lease structures fitting your concrete progress schedule. Standard rental terms start at 1 month, with sequential weekly extensions as you climb upper levels.