How Far and How Fast?Look at the pump manufacturer's spec sheets for the machine's output rate (usually given in cubic yards per hour) and maximum horizontal and vertical pumping distances. Some models are capable of delivering concrete at rates topping 125 cubic yards per hour and distances as far as 1,500 feet horizontally and 400 feet vertically. However, don't waste money buying more pump capacity than you need—or can feasibly handle. A high-capacity pump usually isn't necessary for placing thin cement-based overlays. And to take advantage of a pump with super-fast delivery rates, you must have enough workers on hand during the placement to keep up with the pace. This is especially critical on decorative stamped concrete jobs because you have a limited window of opportunity for finishing and stamping after the concrete hits the ground. For decorative work, consider going with a pump equipped with variable volume control, which lets you adjust the pump output to suit the tempo of the job. This will permit you to slow down concrete delivery if the finishing or stamping crew falls behind. Also keep in mind that the maximum volume output and conveying distances touted by pump manufacturers are only theoretical. These capacities will vary depending on such factors as the mix design, job conditions, and diameter and length of the pipeline used. Return to Concrete Trailer Pump Buyer's Guide Find a Concrete Contractor 23 Services in 200 Metros -- U.S. and Canada © 2008 ConcreteNetwork.com None of this site may be reproduced without written permission |
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