Amendment 1 - Pad Guidelines.pdf

TP-5700 1/1324 Section 3 Location

3.2.1 Single-Pad Mounting

The manufacturer recommends a single, level concrete mounting pad as shown in Figure 3-2. This method provides maximum stability for the generator set;

however, draining the oil and servicing the generator set may require raising the set from the pad.

Use an oil drain pump if clearance below the oil drain or extension is insufficient for a pan large enough to hold all the engine’s oil.

TP-5700-3

Figure 3-2 Single-Pad Mounting

3.2.2 Dual-Pad Mounting

The two-pad arrangement shown in Figure 3-3 provides easy access to conveniently drain the oil. Follow the oil draining considerations outlined in Section 3.2.1.

TP-5700-3

Figure 3-3 Dual-Pad Mounting

3.2.3 Four-Pad Mounting

The four-pad arrangement shown in Figure 3-4 provides more room under the engine for service than the previous two methods. Follow the oil draining considerations outlined in Section 3.2.1.

3.2.4 Mounting Pad Specifications

Mounting pad weight. The weight of the single mounting pad or combined weight of multiple mounting pads should equal or exceed the combinedweight of the generator set and attached accessories.

TP-5700-3

Figure 3-4 Four-Pad Mounting

To determine the weight of the mounting pad(s), determine the volume (length x width x height) of each pad in cubic meters (cubic feet). Multiply this result by

2400 kg (150 lb.) to determine a pad’s weight. In multiple-pad installations, add the weights of all pads to determine the total mounting pad weight.

Mounting pad specifications. Mounting pad composition should follow standard practice for the required loading. Typical specifications call for 17238--

20685 kPa (2500--3000 psi) concrete reinforced with eight-gauge wire mesh or No. 6 reinforcing bars on

305 mm (12 in.) centers. The top surface of themounting pad onwhich the generator setmounts should bewithin a flatness of 3 mm (1/8 in.).

The recommended concrete mixture by volume is

1:2:3 parts of cement, sand, and aggregate, respectively. Surround the pad with a 200--250 mm

(8--10 in.) layer of sand or gravel for proper support and isolation of a pad located at or below grade.

Anchor the generator set to the concrete using bolts cast into the surface of the pad. Otherwise, drill holes in the mounting pad and use expansion anchor bolts. Anchor the generator set skid or fuel tank (if equipped) using all of the provided anchor holes on the bottom of the skid.

Note: Refer to the generator set and accessory dimension drawings for conduit and fuel-line placement. The drawings give dimensions for electrical and fuel connection roughins and stubups.

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