Estimating Labor Unit Data for Concrete Construction

8/13/2019 Estimating Labor Unit Data for Concrete Construction

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Much has been said about concrete and its widerange of usage in the construction field, but all toolittle has been said of the cost of labor for the installa-tion of this important material. It is absurd simply to saythat a unit or block of work is worth so many dollars be-cause it cost your company a certain price for the sametype of work on a previous project of the same nature.

To the limited field of literat u re on the subject of la-bor units for the placement of concrete, a comprehe n-s i ve new book has been added: E s t i m a t o rs Ge n e ra lCo n s t ruction Manhour Ma n u a l , compiled by John S.Page, and published by the Gulf Publishing Company ofHouston, Texas. It covers, among other things, the place-ment of concrete in va rious forms and under va ri o u sco n d i ti o n s. This compre hen s i ve information provi d e s

an authori t at i ve source of data on labor units in man-hours that will prove valuable to the general constru c-tion contractor, as well as architectural, engineering andplant personnel concerned with construction labor cost.

As an estimating tool there are two features which par-ticularly contribute to this book: (1) It covers practicallyevery type of concrete construction that will be encoun-t ered on residential, commercial and industrial build-ing including form s, re i n f o rcing steel, and concre t eplacement. (2) Each table of manhour units contains ad-equate explanations of the specific operations covered.

By special permission of the publishers, Co n c re t eCo n s t ruction is privileged to present a portion of the

manhour unit data relating to its field.

PRODUCTIVITY FACTORS

To intelligently use the manhour unit data presentedin these tables, the user must give consideration to sev-eral factors that tend to affect the productive efficiencyof his crews as compared to the productive efficiency ofthe crews upon whose efforts the table units are based.

To assist the user in making these adjustments, the au-thor reports that the tables are based upon a productiv-ity efficiency rate of 70 percent, which he considers av-erage. As a guide to the basis he used in arriving at thispercentage, he classifies productivity efficiency into five

ranges as follows:

1. Very Low 10- 40%

2. Low 41- 60%

3. Average 61- 80%

4. Very Good 81- 90%

5. Excellent 91-100%

Bef o re an overall productivity efficiency is obtained,the estimator must first arrive at estimates of six impor-tant production elements that will affect the efficiency of

the crews The six classifications of production elementsa re: general economy, project supervision, labor re l a-tions, job conditions, equipment conditions and weath-er conditions.

Using the scale indicated by the five numbered rangesabove, the estimator evaluates each of the six factors inp e rcentages and obtains t he ave rage of these six per-centages in order to determine the ove rall pro ductivityefficiency of his crews on the particular project underconsideration.

As an example let us assume that the estimator ra t esthese six production elements as follows:

1. General Economy 75%

2. Project Supervision 70%

3. Labor Relations 65%

4. Job Conditions 60%

5. Equipment 70%

6. Weather 50%

Total 390%

Since there are six elements involved, we must now di-vide the total percentage by the number of elements toar rive at an average percentage of productivity: 390 per-cent 6 = 65 percent average productivity efficiency.

As previously mentioned, the manhour tables arebased on an ave rage productivity efficiency of 70 per-cent; thus these units would have to be increased 5 per-

cent above the tabulated values in order to be applicableto the project under consideration.

EVALUATING THE DATA

Instead of increasing each of the manhour units by 5percent and then multiplying by the hourly compositerate of the crew, it is much simpler to increase the hourlycomposite pay rate of the crew by 5 percent (that is, mul-tiply it by 1.05) in order to obtain the adjusted rate, andthen to apply this figure directly to the various manhourunits which appear in the tables for a given operation.

For example, let us assume that our considered pro-

ject has a certain amount of formwork and that we willneed four (4), eight-man crews and that only one gener-al foreman will be needed to head the four crews:

General Carpenter Foreman $3.94 per hour

Carpenter Foreman $3.69 per hour

Journeyman Carpenter $3.44 per hour

Laborer $1.95 per hour

Truck Driver $2.03 per hourNote: General foreman and foreman are dea d w eightsince they do not work with their tools; however theymust be considered and charged to the compositecrews.

ESTIMATING LABOR UNIT DATA

FOR CONCRETE CONSTRUCTION


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Foot ing & Heavy Mat FormsMANHOURS PER SQUARE FOOT

Footing form ma nhours are based onusing 2-inch by 12-inch material pro p-erly braced and anchored. If footingheight is to be greater than one foot, addt we n t y- f i ve percent to manhours for

each additional foot or fraction.Assume heavy mat forms to be made

of 2-inch material at least 3 feet high. Ifmats are to be greater than 3 feet inheight, add 10 percent for each addi-tional foot or fraction.

Manhours in all of these tables are forinitial set-up of one use. If forms are tobe re-used, eliminate manhours for fab-rication and apply Re-Use Factor man-hours on page 5.

Manhours in these tables do not everinclude the placement or setting of an-chor bolts or miscellaneous embeddedsteel items. See re s p e c t i ve tables forthese charges.

CREW FOR COMPOSITE RATE:

One General Foreman 2 hours @ $3.94$ 7.88

One Foreman 8 hours @ $3.69$ 29.52

Five Carpenters 8 hours @ $3.44$137.60

Two Laborers 8 hours @ $1.95$ 31.20

One Truck Driver 4 hours @ $2.03$ 8.12

Total for 60 hours $214.32

$214.32 60 = $3.572 co mpos ite ma nhour rateFor the project under consideration, with the produc-

tivity efficiency rated a t 65 percent, the manhour ra t ewould be evaluated by multiplying $3.572 by 1.05, whichequals $3.75: composite rate for 65 percent productivity.

Simply by multiplying the number of manhours esti-mated for a given block or item of work by the arrived atcomposite ra t e, a total estimated direct labor cost, indollar va l u e, can easily and accurately be obtained,

whether it be now or ten years from now and for any ge-ographical location in the world.

WHAT THE TABLES COVER

The author of these manhour tables points out specif-ically what has been taken into account in determiningthese va l u e s. The user should study the notes that ac-company each table. Also, it is to be especially noted thatthe tables presented include allowances for labor in-vo l ved for handling, hauling and installing where ap-p lica bl e, but do not cover the cost of the materials andequipment itself; nor do they include any allowance for

overhead cost or profit.

The labor unit tables on this and the following pagesa re reprinted from Es t i m a t o r s Ge n e ral ConstructionManhour Ta b l e s copyrighted 1961 by Gulf Pu b l i s h gCompany, Box 2608, Houston 1, Texas.

Manhours

Item Carpenter Laborer Truck TotalDriver

Continuous Wall TypeFabricate .030 .008 .038

Erect .026 .008 .001 .035Strip & clean .008 .015 .001 .024

Total .064 .031 .002 .097

Spread TypeFabricate .038 .008 .046Erect .029 .015 .001 .045Strip & clean .008 .015 .001 .024

Total .075 .038 .002 .115

Heavy Mat or Pile CapFabricate .035 .010 .045Erect .054 .022 .001 .077

Strip & clean .008 .023 .001 .032Total .097 .055 .002 .154


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Manhours


Grade BeamsFabricate .023 .008 .031Erect .036 .011 .001 .048Strip & clean .008 .015 .001 .024

Total .067 .034 .002 .103

Foundation or Basement WallsFabricate .038 .007 .040Erect .042 .011 .001 .054Strip & clean .007 .015 .001 .023

Total .082 .033 .002 .117

Tilt-Up WallsFabricate .030 .008 .038Erect .026 .008 .001 .035Strip & clean .008 .015 .001 .024

Total .064 .031 .002 .097

Manhours


Using 2X4 Lumber ClampsFabricate .030 .008 .038Erect .026 .008 .001 .035Strip & clean .008 .015 .001 .024

Total .064 .031 .002 .097

Using Metal ClampsFabricate .038 .008 .046Erect .029 .015 .001 .045Strip & clean .008 .015 .001 .024

Total .075 038 .002 .115

Foundation, Tilt-Up Walls&Grade Beams

MANHOURS PER SQUARE FOOTManhours are based on the use of ply-form material with studs and whalers of2-inch material properly placed and the

n e c e s s a ry holes drilled for form tieswhere required.

Grade beamf o rm manhours are forside forms only, with the assumptionthat ground will form the bottom ofbeam.

Tilt-upwall forms are based on beingf a b ricated and placed on level accessi-ble location.

Wood Pier FormsMANHOURS PER SQUARE FOOT

Manhours are for the use of plywoodf a b ricated forms with 2-inch by 4-inch

wood clamps or metal clamps as thecase may be and include all necessary

bracing and anchoring.

Metal Wall Forms forCont inuous Foundat ionsMANHOURS PER SQUARE FOOT

Manhours are based on the installationof prefabricated metal panel forms withthe necessary whalers, bracing and an-chors made of 2-inch materials.

Re-use Factor for re-oiling of f orm sshould be applied for each re-use offorms.

Manhours


Foundation Walls to 8' High

Erect & brace .053 .021 .002 .076Strip & clean .011 .023 .002 .036

Total .064 .044 .004 .112

Foundation Walls 8' to 12' High

Erect & brace .051 .020 .002 .073Strip & clean .010 .022 .002 .034

Total .061 .042 .004 .107


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Manhours


12" RoundFabricate & erect .050 .008 .001 .059Strip .008 .008 .001 .017

Total .058 .016 .002 .076

24" RoundFabricate & Erect .052 .008 .001 .061Strip .008 .008 .001 .017

Total .060 .016 .002 .078

30" RoundFabricate & Erect .054 .008 .001 .063Strip .008 .008 .001 .017

Total .062 .016 .002 .080

30" RoundFabricate & Erect .056 .008 .001 .065

Strip .008 .008 .001 .017Total .064 .016 .002 .082

Manhours


Walls Ground to 8' HighErect & Brace .059 .023 .003 .085Strip & clean .012 .031 .003 .046

Total .071 .054 .006 .131

Walls 8' to 16' HighErect & Brace .066 .026 .003 .095Strip & clean .014 .035 .003 .052

Total .080 .061 .006 .147

Walls 16' to 20' HighErect & Brace .078 .031 .003 .112Strip & clean .017 .041 .003 .061

Total .095 .072 .006 .173

Fiber Tube Pier FormsMANHOURS PER LINEAR FOOT

Manhour units cover the complete in-stallation of fiber tubing as listed, in-cluding the fabrication and installation

of necessary 1- and 2-inch planking forbracing and anchoring and the strippingof all items after initial concrete set.

Metal Wall Forms forContinuous Above Grade Walls

MANHOURS PER SQUARE FOOTManhours are based on the installation

of prefabricated metal panel forms withthe necessary whalers, bracing and an-chors made of 2-inch materials.

Re-use Factor for re-oiling of form sshould be applied for each re-use offorms.

Manhours in this and following tablesdo not include scaffolding allowance.


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Continuous Wood Wall FormsMANHOURS PER SQUARE FOOT

Manhours are based on the use of ply-wood panels with 2-inch studs andwhalers properly placed and the neces-

s a ry drilled holes for form ties as re-quired.If forms are to be re-used, eliminate

fabrication manhours and apply Re-useFactor manhours.

Re-Use FactorsRe-use factor manhours are average forthe minor replacement or repair of alltypes of wood forming.

The manhours shown should be sub-stituted for the initial fabrication man-hours for all form work, in accordan c ewith its estimated re-uses.

If major repairs are re q u i red for re -use of form work, it should be charg edat initial fabrication cost for that partic-ular type of form work.

FootingsMANHOURS PER CUBIC YARD

Manhours include complete placementand vibration of concrete for the itemslisted.

Manhours in this and following ta-bles do not include necessar y cra f ts t a n d - by time, fabrication of specialramps or finishing of concrete.

Manhours

Item Carpenter Laborer Total

Repairs First Re-use .01 .003 .013Repairs Second Re-use .02 .004 .024Repairs Third Re-use .03 .006 .036Repairs Subsequent Re-uses .04 .007 .047

Oiling after each use .005 .005

Manhours

Item Laborer Carpenter Oper. Oiler TotalEngr.

Continuous Wall TypeChute .46 .03 .49Buggies .60 .03 .60Crane & bucket .81 .03 .03 .87Conveyor & buggy .70 .03 .73

Spread Type FootingsChute .53 .04 .57Buggies .70 .70Crane & bucket .88 .03 .06 .94Conveyor & buggy .79 .03 .82

Heavy Mat or Pile CapChute .35 .05 .40Buggies .75 .75Crane & Bucket .38 .06 .06 .50

Manhours


Walls Ground to 8' HighFabricate .030 .008 .038Erect .045 .012 .002 .059Strip & clean .007 .029 .002 .038

Total .082 .049 .004 .135

Walls 8' to 16' HighFabricate .030 .008 .038Erect .051 .013 .002 .066Strip & clean .009 .033 .002 .044

Total .090 .054 .004 .148

Walls 16' to 20' HighFabricate .030 .008 .038Erect .060 .016 .002 .078Strip & clean .010 .039 .002 .051

Total .100 .063 .004 .167


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Foundation Walls &Grade Beams

MANHOURS PER CUBIC YARDManhours include necessary set-up,placement and vibration of concrete.

Piers

MANHOURS PER CUBIC YARDManhours include set-up time and theplacement and vibration of concrete forsquare and round piers as described.

Additional allowance has been givento the placement of concrete in ro u n dpiers due to the fact that additional caremust be taken in this type of formwork.

Above Grade WallsMANHOURS PER CUBIC YARD

Manhours are for the placing and vibra-

tion of concrete for the described walls.Manhours do not include the fabri-

cation, erection or dismantling of hoistor the finishing of concrete.

Manhours


Grade BeamsChute .55 .04 _ .59Buggies .91 .91Crane & bucket .94 .03 .03 1.00

Conveyor & buggy .91 .07 .98

Foundation or Basement WallsChute .55 .04 .59Buggies 1.00 1.00Crane & bucket .99 .04 .04 1.07Conveyor & buggy 1.00 .07 1.07

Manhours


Square PiersChute .70 .05 _ .75Buggies .96 .96Crane & bucket 1.02 .06 .06 1.14Conveyor & buggy .96 .10 1.06

Round PiersChute .74 .05 .79Buggies 1.00 1.00Crane & bucket 1.07 .06 .06 1.19Conveyor & buggy 1.00 .11 1.11

Manhours


Walls Ground to 8' High

Hoist & buggies .88 .16 1.04Crane & bucket .62 .07 .07 .76Crane, bucket & buggies .68 .09 .09 .86Conveyor & buggies .59 .07 .66

Walls 8' to 16' High

Hoist & buggies 1.17 .16 1.33Crane & bucket .83 .07 .07 .76Crane, bucket & buggies .91 .09 .09 1.09

Walls 16' to 20' HighHoist & buggies 1.46 .16 1.62Crane & bucket 1.04 .07 .07 1.18Crane, bucket & buggies 1.14 .09 .09 1.32


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Radial & RetainingWood Wall Forms

MANHOURS PER SQUARE FOOTManhours are based on the use of ply-

wood panels with 2-inch studs andwhalers properly placed and the neces-s a ry drilled h oles for form ties as re-quired.

ColumnsMANHOURS PER CUBIC YARD

Manhours are for the placing and vibrat-ing of the listed types of columns.

Additional allowance has been give nto the placement of round columns dueto the fact that additional care must betaken in this type of formwork.

Manhours do not include craft stand-

by time, the fabrication, installation anddismantling of hoist or the finishing ofconcrete.

Tilt-Up Concrete PanelsMANHOURS PER SQUARE FOOT

Manhours include the placement andv ib ration of concrete and the finishing,

curing and erection of panels.Manhours are based on the placing ofc o n c rete in pre - e rected forms on a flatle vel location easily accessible for bothplacing and erection operations.

Placing concrete manhours are basedon placing concrete direct from re a d ymix truck into forms.

Manhours do not include the fabrica-tion, erection or stripping of forms.

Manhours


Radial Walls to 4' HighFabricate .049 .010 .059Erect .064 .017 .001 .082Strip & clean .010 .022 .001 .033

Total .123 .049 .002 .174

Radial Walls 4' to 12' HighFabricate .059 .012 .071Erect .077 .020 .001 .045Strip & clean .012 .026 .001 .024

Total .148 .058 .002 .115

Retaining Wall to 10' HighFabricate .036 .007 .043Erect .047 .013 .001 .061Strip & clean .007 .016 .001 .024

Total .090 .036 .002 .128

Manhours

Item Laborer Oper. Oiler TotalEngr. r

Exterior Square ColumnsHoist & buggies 1.43 .14 1.57Crane, bucket & buggies .99 .08 .08 1.15

Interior Square ColumnsHoist & buggies 1.79 .16 1.95

Crane, bucket & buggies 1.24 .10 .10 1.44

Round Columns (Interior)Hoist &buggies 1.87 .17 2.04Crane, bucket & buggies 1.30 .11 .11 1.52

Column CapsHoist & buggies 2.40 .15 2.55Crane, bucket & buggies 1.95 .12 .12 2.19

Manhours

Item Laborer Cement Iron TotalFinisher Worker

Pre-Cast Panels 6" ThickPlace Concrete .147 .147Finish & Cure .002 .015 .017Erect Panels .120 .120


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Wood Beam & Girder Forms

MANHOURS PER SQUARE FOOT

Manhours are based on the use of ply-wood and 1- and 2-inch planking ma-t e rials all properly braced and an-chored.

Sufficient time has been allowed tocover the outlined operations and nec-essary items of labor operations.

Radial & Retaining WallsMANHOURS PER CUBIC YARD

Manhours include set-up time and theplacement and vibration of concrete forthe items outlined.

Manhours do not include craft stand-by time, the fabrication of chutes or the

finishing of concrete.

Floor Slabs, Beams & GirdersMANHOURS PER CUBIC YARD

Manhours include set-up time andplacement and vibration of concrete asoutlined.

Manhours do not include hoist orchute fabrication or hoist erection orfinishing of concrete.

Manhours


Square BeamsFabricate .038 .011 .049Erect .071 .026 .001 .098Strip & clean .008 .023 .001 .032

Total .117 .060 .002 .179

Shored Beam & GirderFabricate .032 .013 .045Erect .088 .035 .001 .124Strip & clean .017 .045 .001 .063

Total .137 .093 .002 .232

Hung from Steelbeam & GirderFabricate .027 .011 .038Erect .073 .029 .001 .103Strip & clean .014 .037 .001 .052

Total .114 .077 .002 .193

Manhours


Radial Walls to 4' HighChute .55 .04 .59Crane & bucket .65 .07 .07 .79

Radial Walls 4' to 12' HighCrane & bucket .85 .09 .09 1.03Conveyor .70 .07 .77

Retaining Wall to 10' HighCrane & Bucket 1.10 .10 .10 1.30Conveyor .90 .09 .99

Manhours


Square Beams & Girder

Hoist & buggies 1.88 .19 2.07Crane ,bucket & buggies 1.43 .11 .11 1.65

Elevated Floor SlabsHoist & buggies 1.56 .16 1.72Crane ,bucket & buggies 1.09 .10 .10 1.29

Ground Floor SlabChute .41 .04 .45Buggies .87 .87Crane & Bucket 1.10 .10 .10 1.30


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Wood Forms forElevated Slabs

MANHOURS PER SQUARE FOOT

Manhours are based on the use of ply-

wood and properly sized timbers as re-quired for bracing and supporting.

Sufficient time has been allowed tocover the outlined operations and neces-sary items of labor operations.

M etal Floor Pan FormsMANHOURS PER SQUARE FOOT

Manhours are based on the installationof pre f a b ricated metal pan forms withthe necessary size timber supports.

Equipment FoundationsSimple Layout

MANHOURS PER SQUARE FOOTManhours are based on the fabric a t i onand installation of 2-inch materials forf o rm w o rk to 18 inches high, and ply-

wood sheathing for forms to 4 feet high,all properly braced and anchored inplace.

A simple layout is that of a smalls q u a re pad placed either integral withfloor or over preset dowels left purpose-ly in preplaced floor for this reason.

Manhours


Flat Slab with Wood ShoresMake-up & erect .067 .036 .001 .104Strip & clean .004 .036 .001 .041

Total .071 .072 .002 .145

Flat Slab with Adjustable ShoresMake-up & erect .043 .030 .001 .074Strip & clean .004 .036 .001 .041

Total .047 .066 .002 .115

Flat Slab Hung from SteelFabricate &erect .041 .009 .001 .051Strip & clean .005 .020 .001 .026

Total .046 .029 .002 .077

Manhours

Item Carpenter Laborer Truck Total

Driver

Metal Pan with Adjustable ShoresCut & erect lumber .040 .023 .002 .065Erect pans & shores .010 .015 .002 .027Strip & clean .018 .002 .020

Total .050 .056 .006 .112

Metal Pan with Wood ShoresCut & erect lumber .050 .040 .002 .092Erect pans & shores .010 .015 .002 .027Strip & clean .018 .002 .020

Total .060 .073 .006 .139

Manhours


Square Pads 6" to 18" High Ground FloorBuild in place .14 .03 .01 .18Strip & clean .01 .03 .04

Total .15 .06 .01 .22

Square Pads 6" to 18" High Elevated FloorsBuild in place .16 .03 .01 .20Strip & clean .01 .04 .05

Total .17 .07 .01 .25

Square Pads to 4' High Ground FloorFabricate & erect .17 .04 .01 .22Strip & clean .02 .04 .06

Total .19 .08 .01 .28

Square Pads to 4' High Elevated FloorsFabricate & erect .19 .04 .01 .24Strip & clean .02 .05 .07

Total .21 .09 .01 .31


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Equipment FoundationsComplex Layout

Bulky, Offset, Skewed and AngledMANHOURS PER SQUARE FOOT

Complex foundation manhours are av-e rage for all sizes an d shapes and arebased on the use of 1- and 2-inch plank-ing, plywood sheathing and minor sheet

metal cuts and bends.A complex layout is that of a large andbulky foundation with many offsets,skews and angles, such as a foundationfor a turbo-generator.

Rods & M eshMANHOURS PER UNITS LISTED

The manhours cover necessary time forthe various operations listed.

Manhours


Average All Heights & SizesFabricate & erect .20 .08 .02 .30Strip & clean .05 .12 .17

Total .25 .20 .02 .47

Tank Cradle FormsBuild in place .13 .04 .01 .19Strip & clean .01 .03 .01 .04

Total .14 .07 .02 .23

Manhours

Item Per Ton Per cwt

Unload, Sort & Pile Rods 1.75 0.0875

Fabricate Cut and Bend1/2' round and larger 6.00 0.30003/8' round and smaller 11.48 0.5740

Place loose without tieing

3/4" round or larger 7.25 0.36255/8" round and smaller 8.78 0.4390

Place and Tie RodsWalls, columns, etc. 16.50 0.8250Floors 22.10 1.1050

Average All Operations All sizeswithout tieing 18.51 0.9250With tieing 29.79 1.4900

Item Manhoursper 100 sq ft

Welded Wire MeshCut & Place .80


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Hook TypeAnchor Bolt Inst allation

MANHOURS EACHManhours are based on overall length ofanchor bolt from end to end includinghook and are average for all heights.

Manhours are for installation of tem-plate and bolt, or bolt and sleeve, as thecase may be, for the size and length out-

lined.All bolts 78 inch and larger are as-

sumed to be sleeved and those smallerthan 78 inch round are assumed to bewithout sleeves.

Manhours in this and following tablesdo not include fabrication of bolts orfield engineering time spent aligningand checking bolts.

For sizes not listed, take the next high-est listing.

Hook TypeAnchor Bolt Inst allation

MANHOURS EACHManhours are based on overall length ofanchor bolt from end to end includinghook and are average for all heights.

All bolts listed are assumed to be

sleeved.For sizes not listed in this and follow-ing tables, take the next highest listing.

Equipment FoundationsMANHOURS PER CUBIC YARD

Manhours are for the placement and vi-

bration of concrete for the items listed.Sq u a re pad manhours are based on

placing of square pads to 4 feet high ei-ther integral with floor or over pre - s e tdowels on pre-placed floor.

Offset, skewed or angled manhoursare based on that of placing a large andbulky foundation with offsets or anglesor both.

Manhours Each For Overall LengthSize

0' 8 1' 0" 1' 6" 2' 0" 2' 6" 3' 0" 3' 6" 4' 0"

14" .15 .15 .20 .20 38" .15 .15 .20 .20 12" .15 .15 .25 .28 58" .15 .20 .25 .28 .30 .33 3

4" .18 .20 .28 .30 .35 .38 78" .40 .43 .45 .48 .50. .53

1" .40 .45 .48 .50 .53 .58

114" .48 .50 .50 .53 .5 .65

112" .50 .55 .55 .58 .60 .70

134" .55 .58 .60 .65 .668 .73

2" .65 .68 .70 .75 .78

214" .70 .73 .75 .78 .80

212" .75 .78 .78 .80 .85

Manhours Each For Overall LengthSize

4' 6 5' 0" 5' 6" 6' 0" 6' 6" 7' 0" 7' 6" 8' 0"

78" .90 .98 1.10 1.15 1.23 1.30 1.35 1.40

1" .93 1.00 1.15 1.25 1.28 1.38 1.40 1.54

114" .95 1.10 1.25 1.28 1.30 1.40 1.45 1.50

112" .98 1.15 1.28 1.33 1.38 1.43 1.48 1.58

134" 1.00 1.25 1.33 1.40 1.43 1.50 1.55 1.60

2" 1.10 1.28 1.40 1.45 1.50 1.58 1.60 1.65

214" 1.15 1.33 1.45 1.48 1.55 1.60 1.63 1.68

212" 1.25 1.40 1.48 1.53 1.60 1.63 1.68 1.70

Manhours

Item Laborer Oper. Oiler Total

Engr. rSquare Pads

Crane & bucket 1.50 .19 .19 1.88Crane, bucket & buggies 2.00 .25 .25 1.50

Offset, Skewed & AngledCrane & bucket 2.44 .38 .38 3.20Crane, bucket & buggies 3.25 .50 .50 4.25


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Topping FinishMANHOURS PER SQUARE FOOT

Manhours are for topping finish and in-

clude mixing and stand-by time whererequired.Manhours do not include the placing

and vibrating of main floors.

Concret e FinishMANHOURS PER SQUARE FOOT

Manhours are for the types of finish not-ed and include all necessary operations.

In most are a s, craft jurisdiction pre-vents laborers from helping cement fin-ishers. Should this be the case, use totalhours as listed for cement finisherhours.

ManhoursItem

Cement Finisher

Integral Topping12" by hand .02912" by machine .018

1" by hand .068

1" by machine .022

Separate Topping12" by hand .03612" by machine .018

1" by hand .068

ManhoursSurface Finish

CementFinisher Laborer Total

Carborundum Rub .045 .045

Remove Fins or Ties Point & Patch .030 .030

Machine Trowel & Hand Burnish .015 .015

Hand Steel Trowel .030 .030

Woodfloat .001 .001

Broom .003 .003

Screeding Off .003 .003 .006

Cure & Protect .002 .002

Grout Column Bases (1") .250 .025 .500

PUBLICATION #C620129Copyright 1962, The Aberdeen Group

All rights reserved

Estimating Labor Unit Data for Concrete Construction

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