HVAC Gravity Ventilators Cost Estimating Tips

Cost Estimating Resources from RSMeans

2013 Mechanical Cost Data Book
Enables you to handle every kind of mechanical estimating problem and make accurate price comparisons between various mechanical components.
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2013 Building Construction Cost Data Book
Thousands of unit costs for building components, arranged in the new CSI MasterFormat® 2010 classification system
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ManuSpec 3-part specs available for download MANU-SPEC 3-part Specs
SpecData datasheets available for download SPEC-DATA Datasheets
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MasterFormat® Categorization
02 00 00 - Existing Conditions
03 00 00 - Concrete
04 00 00 - Masonry
05 00 00 - Metals
06 00 00 - Wood, Plastics, & Composites
07 00 00 - Thermal & Moisture Protection
08 00 00 - Openings
09 00 00 - Finishes
10 00 00 - Specialties
11 00 00 - Equipment
12 00 00 - Furnishings
13 00 00 - Special Construction
14 00 00 - Conveying Equipment
21 00 00 - Fire Suppression
22 00 00 - Plumbing
23 00 00 - HVAC
23 30 00 - HVAC Air Distribution
23 37 00 - Air Outlets & Inlets
23 37 23 - HVAC Gravity Ventilators
    25 00 00 - Integrated Automation
    26 00 00 - Electrical
    27 00 00 - Communications
    28 00 00 - Electronic Safety & Security
    31 00 00 - Earthwork
    32 00 00 - Exterior Improvements
    33 00 00 - Utilities
    34 00 00 - Transportation
    35 00 00 - Waterway & Marine Construction