Mechanical Estimating Manual Episode 6 pps

Supply registers, single defl ection dampers .... Collectors are rated by the size of particles they can remove, by percentage effi ciency of removal of different size particles, and

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Estimating Fire Dampers

Curtain Type Blades, Vertical Installation

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4 22 ga U.L sleeve, free area 1.60 1.25

5 Cap for blades out of air stream 1.25 1.25

6 Multiblade type fi re dampers, parallel

blades Material factor of 1.1 times MULTIBLADE CONTROL DAMPER prices

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HVAC Units and Air Distribution Equipment 89

Estimating Louvers

Extruded Aluminum, 4” Deep, Fixed Blade, Storm Proof with Screens, Mill Finish

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Labor based on scaffold height installation in basement or on 1st fl oor or man height installation

in penthouse wall

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2 Finishes: baked enamel add $3.51 /sq ft

anodized, add 4.41 /sq ft duranodic, add 7.90 /sq ft

fl uoropolymer coating, add 12.17 /sq ft

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Estimating Registers

Return Air Registers, Fixed 450 Vanes, Opposed Blade Dampers, Commercial Grade

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CORRECTION FACTORS—Commercial Grades Material Labor

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1 Supply registers, single defl ection dampers 1.10 1.00

2 Supply registers, double defl ection dampers 1.25 1.00

3 Transfer grille, single defl ection, no dampers 0.63 0.60

4 Relief grille in ceiling, lay in, single defl ection, no dampers 0.63 0.40

5 Aluminum construction instead of steel 1.10 1.00

6 Lay in type grilles 1.00 0.50

7 Side wall screw in 1.00 0.65

8 Residential light commercial grade 0.60 0.95

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Ceiling Diffusers

Round, Fixed Pattern, Steel, With Opposed Blade Dampers, Commercial Grade

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DIAMETER MATERIAL COST LABOR MATERIAL & LABOR

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Inches Each of Dia Hours Cost 30% O&P

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Round, Adjustable Pattern, Steel, W/OBD, Commercial Grade

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Rectangular, Adjustable Pattern, Steel, w/OBD, Commercial G

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VAV Terminal Boxes

Cooling Only with Pneumatic or Electric Motor, Controls

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VAV Terminal Boxes

With Reheat Coils, Pneumatic or Electric Motor, Controls

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VAV System Components

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1 For Buensod or Tutle and Baily CAV boxes

up to 1,000 CFM $370

2 Titus kits for Titus boxes

0 - 500 CFM $266

500 - 1,000 CFM $370 CARRIER VAV UNITS

1 Moduline cooling only VAV boxes

with 3 slot diffusers $252 VAV CONTROL PANELS

1 Controls and monitors supply fans, return fans, static pressure sensor, supply and return air, air monitoring stations, transmitters, outside air control $8,880 to $14,800

2 Static pressure regulator $222

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VAV Ceiling Diffusers

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Self contained variable volume ceiling diffusers with thermal sensors for discharge air and warm-up,

built in volume controls and built in pressure sensor for automatic switch-over between cooling and heating

Manufacturers

1 Therma-Fuser by Acutherm, Novato, CA

Direct labor costs are $39.00 per hour

Inlet Vane Dampers

For Centrifugal Fans

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DIA AREA MATERIAL COST LABOR MATERIAL & LABOR

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Fixed Pitch Sheaves

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FIXED, SINGLE GROOVE, NO BUSHING

FIXED, DOUBLE GROOVE, BUSHINGS

FIXED, TRIPLE GROOVE, BUSHINGS

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Direct labor costs are $39.00 per-hour

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Variable Pitch Sheaves

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VARIABLE PITCH SINGLE GROOVE

VARIABLE PITCH, DOUBLE GROOVE

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V-Belts

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Filter Labor

THROW AWAY AND PERMANENT FILTERS Slid Into Channels, I” or 2” thick 0.1 Assembled Into Filter Bank 0.5

(Laid in place in kitchen hood)

BAG TYPE CARTRIDGES WITH FRAME (Shipped Unassembled)

HEPA FILTER CARTRIDGES

CHARCOAL FILTER CARTRIDGES

ROLL TYPE FILTER UNITS (Shipped Unassembled)

One section up to 5 ft wide 12.0

ELECTRO-STATIC FILTER UNITS

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Chapter 7

Plumbing Fixtures and Specialties

This chapter contains labor tables for plumbing fi xtures such as:

• Lavatories and Sinks

• Toilets and Urinals

• Drinking Fountains

• Tubs and Showers

• Kitchen Products

• Fire Protection Equipment

• Water Meters

• Carriers and Supports

In addition, this chapter covers labor tables for plumbing specialties such as:

• Drains: Floor, Roof, Scupper and Gutter types, Floor Cleanouts

• Back Flow Preventers Current and local prices for bidding purposes are to be gotten through quotations from suppliers or from a suppliers pricing manual.

Plumbing Fixtures

Labor Only

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Lavatories Labor

Wall Hung 3.26

Comer 4.15

Counter Top 3.05

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Sinks

Counter Top 4.46

Floor 5.95

All Purpose 5.28

Instrument 6.75

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Toilets

One Piece Toilet 3.05 Two Piece Toilet 4.00 Wall Hung 4.76

Bidet 3.05

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Urinals

Wall Hung 4.76

Floor Mounted 5.95

Trough 6.75

Women’s w/FV 5.35

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Labor Only

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Wall Hung 2.96

Wall Recessed 3.27

Freeze Proof 3.78

Free Standing 4.47

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Tubs

Cast Iron Comer 7.48 Cast Iron Recessed 7.48 Cast Iron Square 7.48

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Showers

One Piece Fiberglass Shower and Tub 8.94 32” Square Shower Stall 7.35 36” Square Shower Stall 7.48 36” Comer Shower Stall 7.48

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Kitchen Products

Dishwashing Machine, 45 inch 23.95 Dishwashing Machine, 54 inch 27.90 Dishwashing Machine, 64 inch 32.50 Dishwashing Machine, 80 inch 35.50 Garbage Disposal, 1-1/2 BP 5.95 Garbage Disposal, 5 Bp 9.95 Ice Maker, 225 lbs, 24 hours, Air Cooled 5.95 Ice Maker, 225 lbs, 24 hours, Water Cooled 5.95

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Labor Only

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Fire Hose Cabinet w/Valve & 75’ Hose 3.00 Hose Valve with Cap & Chain 2.80

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500 GPM 50.80

750 GPM 53.35

1000 GPM 62.20

1500 GPM 69.00

2000 GPM 95.00

2500 GPM 104.80

3000 GPM 131.50

3500 GPM 140.00

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Manual Pull Station 1.25

CO2 High Pressure System

75 Lb Cylinder 2.45

100 Lb 2.95 FM200 System

25 Lb Container 1.85

45 Lb 2.15

65 Lb 2.45

100 Lb 2.95

200 Lb 2.75

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Wall Hydrant 4.20

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Plumbing Fixtures and Specialties 99

Labor Only

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Commercial / Residential—Bronze 1/2” to 1” 0.55 1-1/4” to 2” 1.08 3” 5.00 4” 9.80 6” 15.05 8” 18.60

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Carriers / Supports

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Adjustable Siphon Jet Single Water Closet 4”-5” 1.80 Adjustable Siphon Jet Double Water Closet

4”-6” 3.20 Offset Single Blowout Water Closet

4” 1.80 Offset Double Blowout Water Closet

4” 3.20 Floor/Wall Mount Urinal 1.80 Lavatory 1.55

Sink 1.55

Drinking Fountain 1.55

Water Coolers 1.55

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Plumbing Specialties

Labor Only

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2” Dia 1.32 3” Dia 1.42 4” Dia 1.58 5” Dia 1.79 6” Dia 2.00

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2” - 4” Dia 0.95 5” - 6” Dia 1.10

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Labor Only

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2” Dia 0.86 3” Dia 0.92 4” Dia 1.09 5” Dia 1.51 6” Dia 1.70 8” Dia 1.89

2” Dia 0.50 3” Dia 0.53 4” Dia 0.56 5” Dia 0.59 6” Dia 0.61 8” Dia 0.65

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Backfl ow Preventers

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3/4” 1.23 1” 1.46 1-1/4” 1.93 1-1/2” 2.16 2” 2.84

2-1/2” 4.00 3” 4.39 4” 5.80 6” 8.52 8” 10.33 10” 12.35

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Labor Only

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3/4” 1.23 1” 1.46

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Double Check Valve Threaded 3/4” 0.78 1” 0.95 1-1/2” 1.14 2” 1.39

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Double Check Valve Flanged 2-1/2” 2.41 3” 4.02 4” 5.55 6” 8.07 8” 9.99 1001 12.16

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AIR POLLUTION EQUIPMENT

There are four basic types of collectors, each with its own

variations These are: centrifugal cyclones, baghouses,

scrubbers, and electrostatic precipitators Collectors

are rated by the size of particles they can remove, by

percentage effi ciency of removal of different size particles,

and by permissible temperature ranges, pressure drops,

air volumes, and water usage.

Cyclones are dry centrifugal collectors that remove particles

down to approximately 10 microns at effi ciencies in the 80

to 90 percent region Particles are removed by centrifugal

force and drop down into a hopper while the cleaned air

goes out the top of the unit There are three variations of

cyclones The fi rst is the large diameter, low resistance type,

which is most effi cient in the 40 to 60 micron particle size

range The second is the medium effi ciency cyclone, which

has a smaller diameter housing and is generally used for 20

to 30 micron sized particles The third cyclone is the high

effi ciency, small diameter model, which is very effi cient in

the 10 to 15 micron range.

Baghouses are dry collectors that clean like a vacuum

cleaner, incorporating a number of tubular, stocking-like

fabric fi lter bags They can collect dry particulates such

as dust and fumes only and cannot be used for gases or

liquids They are highly effi cient, reaching a 99.9 percent

level on 1 micron size particles, and operate best in

the 0.25 micron size range Pressure losses are higher,

around 3 to 8 inch WG, and are dependent on the

air-to-Chapter 8

Air Pollution and Heat Recovery Equipment

cloth ratios involved There are two basic types of fabric collectors, distinguished by the method of bag cleaning and direction or air fl ow The mechanical baghouse has motorized shakers to remove dust from the insides of the vertical tubes The dust laden air fl ows up and into the tubes, then out through the fabric The other type of baghouse is pneumatically cleaned-air is used to clean the bags rather then mechanical shakers-and there are three variations: reverse air fl ow, reverse jet, and pulse jet.

Wet scrubbers can be used for particulates, gases,

and liquids Liquid droplets in a scrubber capture particulates mechanically while gases are removed through absorption There are a number of different types of scrubbers such as packed towers, venturi, wet centrifugal, wet dynamic, orifi ce types, and fog towers Effi ciencies range from 90 to 99 percent for particles in the 1 to 5 micron range Mgh energy scrubbers remove particles in the 0.25 to 1 micron range Wet scrubbers are often divided into three groups according to pressure losses, theses being 4 to 8, 8 to 25, and 25 to 60 inch WG, respectively.

Electrostatic precipitators are used primarily to

collect particulates such as welding fumes and some mists Effi ciencies are in the 98 to 99 percent range for 0.25

to 1 micron particles A precipitator employs an ionization process whereby incoming particles are made negative and then collected on a positive plate through magnetic attraction The collector plate is periodically cleaned by rapping, causing the particles to fall away by gravity.

Four basic types of collectors

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High Effi ciency Centrifugal

Cyclone Collectors

Includes Fan

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1 Medium effi ciency cyclone

2 Low effi ciency cyclone

Mechanical Bag House Collectors

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1 Pneumatic Bag House 0.90 times value for mechanical type (labor)

2 Pneumatic Bag House 0.71 material multiplier for pneumatic bag house

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Air Pollution and Heat Recovery Equipment 103

Wet Scrubber Collectors

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Electrostatic Precipitator Collectors

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Industrial Exhaust Fans

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2 For DWDI fan, +10%

3 For split centrifugal housing, knocked down, +50%

4 For inlet vane control, +10%

5 For crane hoist, with fan set directly on pad, -20%

Gas Fired Makeup Air Units

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