ᐅ Simple Strip Foundation – How to Calculate Material Quantities?
Created on: 11 Aug 2025 14:08
Q
querys_Hello everyone,
my topic might fit here best.
I want to pour two strip foundations for a parking lift that will serve as a permanent parking space for a decommissioned car. Each strip has almost exactly 1m³ (3.6x0.4x0.7m) of concrete.
Online, I found varied information stating that per cubic meter you need 500kg cement + 1800kg aggregate + 200L water.
That corresponds to about 20 bags of cement at 25kg each per cubic meter of concrete.
The building material supplier I trust now said that 10 bags are enough and about 1300kg aggregate, but that doesn’t seem correct?
This was mentioned rather as a side note at the end of the conversation, and I was a bit caught off guard, so I didn’t ask any follow-up questions.
A quick note on the load:
Two strip foundations inside a tent hall on natural soil (mainly clay), with a lifting frame (about 1000kg) resting fully on each foundation to lift a vehicle weighing around 1000kg (Golf I Cabriolet).
PS: Delivery is not possible due to the location (about 60m away from the street across a garden).
my topic might fit here best.
I want to pour two strip foundations for a parking lift that will serve as a permanent parking space for a decommissioned car. Each strip has almost exactly 1m³ (3.6x0.4x0.7m) of concrete.
Online, I found varied information stating that per cubic meter you need 500kg cement + 1800kg aggregate + 200L water.
That corresponds to about 20 bags of cement at 25kg each per cubic meter of concrete.
The building material supplier I trust now said that 10 bags are enough and about 1300kg aggregate, but that doesn’t seem correct?
This was mentioned rather as a side note at the end of the conversation, and I was a bit caught off guard, so I didn’t ask any follow-up questions.
A quick note on the load:
Two strip foundations inside a tent hall on natural soil (mainly clay), with a lifting frame (about 1000kg) resting fully on each foundation to lift a vehicle weighing around 1000kg (Golf I Cabriolet).
PS: Delivery is not possible due to the location (about 60m away from the street across a garden).
Hi,
With this load and function, it really comes down to the right mix. For load-bearing foundations that need to withstand repeated stress, you should plan for at least 350 - 400 kilograms of cement per cubic meter (22 - 25 pounds per cubic foot), preferably more. Where does your building materials supplier’s figure come from? Have they taken the specific demands of the lifting platform into account, or are they only referring to non-structural applications? Have you already decided whether you will use reinforced or plain concrete?
Good luck!
With this load and function, it really comes down to the right mix. For load-bearing foundations that need to withstand repeated stress, you should plan for at least 350 - 400 kilograms of cement per cubic meter (22 - 25 pounds per cubic foot), preferably more. Where does your building materials supplier’s figure come from? Have they taken the specific demands of the lifting platform into account, or are they only referring to non-structural applications? Have you already decided whether you will use reinforced or plain concrete?
Good luck!