Equipment Pad
A concrete slab that carries mechanical or electrical equipment.
Quick Answer
An equipment pad is a concrete slab, often raised above grade, that supports mechanical or electrical equipment such as chillers, generators, transformers or condensing units. In a takeoff it is usually counted by each, with concrete in cubic yards, formwork in square feet of contact area, and reinforcing steel carried separately.
The Full Picture
Equipment pads give heavy or vibrating equipment a level, stable base. They keep equipment out of standing water, hold anchor bolts, and spread the load to the soil or the structure below. Typical pads sit at grade outside a building, or on the roof or an interior slab for rooftop and housekeeping-pad installations.
Who draws the pad varies. Mechanical and electrical drawings show the equipment and its location, while structural or civil sheets usually show pad size, thickness, reinforcing and anchorage. The equipment schedule gives weights and sometimes dimensions, and the Division 03 concrete specification covers the mix and finish. A frequent coordination gap is a pad that appears on one discipline's sheets but not another's, so it ends up in nobody's scope.
For takeoff, each pad is counted as an item, then built up from its dimensions. Concrete volume is length x width x thickness divided by 27 to get CY. Edge forms are measured as contact area in SF (perimeter x height), and rebar, anchor bolts, sleeves, grout, and sealants are carried as their own lines. Pads poured over subgrade also need excavation, base stone or compacted fill, and a vapor barrier if specified.
Pricing pitfalls include pricing small pads at bulk-slab rates, when low volume with high form, rebar and finishing labor makes the per-CY cost much higher. Estimators also miss pads that serve utility-owned equipment, miss the stone base beneath them, or forget that the supplier's equipment pad requirements, which can differ from the pad shown on the plan, must be confirmed before pouring.
Real Examples
Common Misconceptions
People assume: An equipment pad is included in the equipment price.
Actually: Equipment suppliers normally furnish only the equipment. The pad, anchors, grout and often the conduit or pipe connections to it are separate scope.
People assume: Small pads can be priced at general slab-on-grade rates.
Actually: Small quantities carry the same mobilization, forming, rebar and finishing effort, so unit cost per CY is typically higher than for large slabs.
Does MeltPlan Solve This?
Partially — adjacentFinding and counting equipment pads across the mechanical, electrical and structural sheets is a takeoff task. MeltPlan's takeoff service combines AI that pulls quantities from plans with US-based experienced estimators who review and adjust them, so the output is a verified, ready-to-use takeoff. It works from PDF plans, not BIM models.
Find every equipment pad across the plan set →Frequently Asked Questions
How are equipment pads measured in a takeoff?
Count each pad (EA), compute concrete in CY from length x width x thickness / 27, measure edge forms in SF of contact area, and carry rebar and anchors as separate lines.
Where are equipment pads shown on the drawings?
Equipment locations are on the mechanical and electrical plans, and pad dimensions and reinforcing are commonly on structural, civil or architectural site details. Check the equipment schedule too.
What is a housekeeping pad?
A housekeeping pad is a raised concrete pad, typically a few inches high, that lifts interior or rooftop equipment off the floor to protect it from water and ease cleaning.
What else is needed under an exterior pad?
Many exterior pads sit on compacted base or stone over prepared subgrade, so excavation, base material and compaction belong in the pad's price.
Who normally installs the pad?
Usually the concrete subcontractor, though some projects assign it to the mechanical or electrical trade. The bid scope sheets should say which.