Construction Joint In Mat Foundation

My question is as follows.

Construction joint in mat foundation.

Construction joints are normally required in construction works because there is limited supply of fresh concrete in concrete batching plants in a single day and the size of concrete pour may be too large to be concreted in one go. First of all you need to identify the location of the construction joint for raft foundations aci 224 3 explains that the desirable locations for joints placed perpendicular to the main reinforcement are at points of minimum shear or points of. Technical extra 17 minimum foundation depths in clay soils. Rule of thumb is the joints spacing 24x slab thickness up to 36x slab thickness.

All shuttering should be removed before work continues beyond the construction joint. The number of construction joints in concrete structures should be minimized. Make sure to have a joint connecting into any re entrant corners. 36 0 225 m 8 1 m.

Thus you want control joints spaced between the construction joints by no more than 8m. The diameter of the dowel bar could be t25 or t20. Since the raft foundations are constructed on the ground and it could be using as the ground floor or basement floor slab a water bar will be provided at the construction joint. The construction joint increased the 100 kpa permeability of 100 rh conditioned material by a factor of three compared to the control specimen and a factor of 70 compared to the pristine material.

I am going to study it via finite element analysis. Lay out the pours first then lay out the control joints. I have a mat foundaiton 40m 20m lxb with several extreme equipment load on top settlement in each point is asked to be consist since those equipments are connectted by rigid large size pipe. The nature and type of the construction joint of the raft foundations are more similar to that of the slab.