In each location where a contraction joint
or header is planned, cut forming material, set it on edge, place flush with the top of the forms, and connect.
In addition to these predictive abilities, the software developers added modules for predicting the potential of early-age damage to JPCP and bonded concrete overlays, guidelines for timing contraction joint
sawing, guidelines for early traffic loading of JPCP, and evaporation rate guidelines to predict the potential for moisture loss in portland cement concrete pavements.
Formulas are provided for calculating the heights of objects, quantities of rip-rap, the length of French drains, edge restraint, contraction joint
spacing in concrete, and wood material calculations.
In this proposal, an expansion and contraction joint
would be provided at the crown interface of the barrel and groined arches along the entire length around the perimeter of each basin.
MasterFiber MAC 2200 CB imparts tighter crack control; extends joint spacing; improves load transfer at contraction joints
; and, justifies slab thickness reduction.
This can result in vertical cracks appearing in the internal and external walls if expansion and contraction joints
are not correctly installed during the construction of the building.
The slab-on-ground is 6 1/2 inches thick (reinforced with welded-wire fabric) with contraction joints
at 20 feet on center each way.
It also can be used to cut expansion joints or contraction joints
to improve the appearance of the slabs.
For these improvements, it is essential to place transverse contraction joints
(typical sawed joints, either doweled or undoweled depending on the thickness) that match any existing joints or cracks in the adjacent pavement.