The timing of your slump window is critical to make sure you work the concrete at the right time. The vibration has similar benefits and drawbacks to that of the truss screed. Due to their one-man ...

wide), striking off the concrete form-to-form by hand screed, vibratory truss screed, or laser screed. (Tolerances on these types of floors can range from Fmin 50 to 125; See excerpt Table 1.1 ...