Concrete Documentation Estimating 
Job Order Contracting
SEPTEMBER 21, 2022
NEVER accept a lump sum estimate for a workorder/project without a full detailed line-item estimate and review of line-times and quantities. Fully audit cost estimate and actual cost information. RSMeans Cost Data, This document is for construction cost reference information. Verify all aspects of the direct work (e.g.,
The Constructor
NOVEMBER 8, 2011
Cracks in concrete beams due to increased shear stress 2. Cracks in concrete beams due to corrosion or insufficient concrete cover 3. Cracks parallel to main steel in case of corrosion in beams 4.
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The Constructor
MARCH 21, 2012
The size of movement depends upon the change in temperature and the coefficient of thermal expansion o f concrete. The size of movement depends upon the change in temperature and the coefficient of thermal expansion o f concrete.
The Constructor
MARCH 25, 2012
Use of Precast Concrete in frames: There are two main types of precast building frame. Use of Precast Concrete for Floors: Each year the industry makes about 5 million square meters of precast floor slabs. Structural frames are mainly used for offices, car parks and retail developments.
The Constructor
MARCH 20, 2012
When the formwork is erected the concrete can be poured. When the concrete has reached the required strength the formwork can be poured. If the steel had been placed too close to the surface and the concrete had been poured then over time the steel may become exposed to moisture and corrosion will commence.
The Constructor
NOVEMBER 8, 2011
Upon wetting, concrete tends to expand. These moisture-induced volume changes are a characteristic of concrete. If the shrinkage of concrete could take place without any restraint, the concrete would not crack.
The Constructor
JANUARY 1, 2012
The benefits of using steel fibres in concrete are as follows: 1. It is generally not possible to achieve the same area of reinforcement to area of concrete using steel fibres as compared to using a network of reinforcing bars of wires.
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