plaaning and estimation

8/16/2019 Plaaning and estimation

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Sec t i on 2

D E M O L I T I O N ,EXCAVATION,A N D C O N C R E T EThis section covers labor in manhours with reference to channeling, cutting holes throughwalls, excavation and duct encasement and manhole concrete construction.

First of all we cover channeling and cutting holes through various sized walls for the

installation of conduits and cables through same. Next we include manhour tables formachine and hand excavation of duct encasements and manholes.

Before an estimate is made on excavation it is well to know the kind of soil that may beencountered. For this reason, we have divided soil into five groups according to thedifficulty experienced in excavating it. Soils vary greatly in charter and no two areexactly alike.

GROUP 1 : Light Soil — Earth which can be shoveled easily and requires no loosening,such as sand.

GROUP 2: Medium or Ordinary Soil — Type of earth easily loosened by pick. Preliminaryloosening is not required w hen power excavating equipment such a s shovels,dragline scrapers and backholes are used. This type of earth is usually class-ified as ordinary soil and loam.

GRO UP 3: Heavy or H ard Soil — This type of soil can be loosened by pick but is some-times very hard to do. It may be excavated by sturdy power shovels withoutprelimiary loosening. Hard and compacted loam containing gravel, smallstones and boulders, stiff clay or compacted gravel are good examples of thistype.

GROUP 4: Hard Pan or Shale - A soil that has hardened and is very difficult to loosenwith picks. Light blasting is often required when excavating with powerequipment.

GROUP 5: Rock - Requires blasting before removal and transporting. (May be dividedinto different grades such as hard, soft or medium.)

Also covered are forms and ready-mixed concrete for duct entrenchments and manholes.

Usually, excavation and concrete work of this nature are subcontracted. However, acomplete direct labor estimate can be obtained from the following manhour tables ifdesired.


2/12

CHANNELING CONCRETE,BRICK & TILE CONSTRUCTION

MANHOURS PER FOOT

Concrete Brick TileSize

Construction Construction Construction

1/2 1.20 .55 .08

3/4 1.43 .70 .12

1 1.50 .80 .18

2 2.63 .90 .23

3M 3.60 1.36 .30

4 4.88 1.58 .38

Manhours include groving with power tools and is average for all heights of walls for above type

construction.

Add 75% to manhours for overhead channeling.

Manhours do not include scaffolding. See respective table for this charge.


3/12

CUTTING HOLES IN WALLH eig ht s to TBn Fe et

MANHOURS EACH

8 W aIl 12 WaIl 16 WaIl 20 WaIl 24 WaIlSize 1 1 1 1 1

Cone. Brick Cone. Brick Cone. Brick Cone. Brick Cone. Brick

1/2 1.20 .48 1.68 .56 2.40 .68 2,96 .80 3.52 .963/4 1.52 .56 1.76 .72 2.48 .76 3.20 .96 3.84 1.12

1 1.76 .64 2.24 .80 2.80 .88 3.52 1.04 4.16 1.521-1/4 1.96 .68 2.64 .96 3.00 1.00 3.92 1.12 4.48 1.601-1/2 2.16 .72 2.80 1.04 3.20 1.20 4,16 1.32 4.76 1.72

2 2.40 .84 3.20 1.20 4.00 1.32 4.72 1.44 4.96 1.922-1/2 2.52 .92 3.28 1.28 4.24 1.40 4.80 1.56 5.20 2.083 2.88 .96 3.84 1.44 4.80 1.56 5.12 1.64 5.60 2.323-1/2 3.04 1.04 4.16 1.52 5.12 1.68 5.52 1.80 5.80 2.484 3.28 1.20 4.80 1.60 5.76 2.00 5.84 2.08 6.40 2.96

Heights f rom Ten to Fif teen Feet

8 W aIl 12 WaIl 16 WaIl 20 WaIl 24 WaIlSize 1 1 j » ,Cone. Brick Cone. Brick Cone. Brick Cone. Brick Cone. Brick

1/2 1.50 .6 0 2.1 0 .7 0 3.00 .8 5 3.70 1.00 4.4 0 1.203/4 1.90 .7 0 2.20 .90 3.10 .95 4.0 0 1.20 4.8 0 1.40

1 2.2 0 .8 0 2.80 1.00 3.50 1.10 4.4 0 1.30 5.20 1.901-1/4 2.45 .85 3.30 1.20 3.75 1.25 4.9 0 1.40 5.60 2.001-1/2 2.70 .90 3.50 1.30 4.00 1.50 5.20 1.65 5.95 2.152 3.00 1.05 4.00 1.50 5.00 1.65 5.90 1.80 6.20 2.402-1/2 3.15 1.15 4.10 1.60 5.30 1.75 6.00 1.95 6.50 2.603 3.60 1.20 4.80 1.80 6.00 1.95 6.40 2.05 7.00 2.903-1/2 3.80 1.30 5.20 1.90 6.40 2.10 6.90 2.25 7.25 3.104 4.10 1.50 6.00 2.00 7.20 2.50 7.30 2.60 8.00 3.70

Manhours include proper set-up for use of power tools with star drill and the removal of excessmaterial.If koredrill is used on brick, deduct 20 % , and on con crete, deduct 10% from ma nhou rs.Manhours do not include scaffolding. See respective table for this cha rge.


4/12

CUTTING HOLES IN WALLHeights from Fifteen to Twenty Feet

NET MANHOURS EACH

8 Wall 12MWall 16 WaIl 20 W aIl 24 W aIlSize 1 1 [ 1 1


1/2 1.73 .69 2.42 .81 3.45 .98 4.26 1.15 5.06 1.383/4 2.19 .81 2.53 1.04 3.57 1.09 4.60 1.38 5.52 1.61

1 2.53 .92 3.22 1.15 4.03 1.27 5.06 1.50 5.98 2.191-1/4 2.82 .98 3.80 1.38 4.31 1.44 5.64 1.61 6.44 2.301-1/2 3.11 1.04 4.03 1.50 4.60 1.73 5.98 1.90 6.84 2.472 3.45 1.21 4.60 1.73 5.75 1.90 6.79 2.07 7.13 2.762-1 /2 3.62 1.32 4.72 1.84 6.10 2.01 6.90 2.24 7.48 2.993 4.14 1.38 5.52 2.07 6.90 2.24 7.36 2.36 8.05 3.343-1 /2 4.37 1.50 5.98 2.19 7.36 2.42 7.94 2.59 8.34 3.574 4.72 1.73 6.90 2.30 8.28 2.88 8.40 2.99 9.20 4.26

Heights from Twenty to Twenty-Five Feet

8 W aIl 12 WaIl 16 WaIl 20 WaIl 24 WaIlSize 1 1 1 j 1


1/2 1.80 .72 2.52 .84 3.60 1.02 4.44 1.20 5.28 1.443/4 2.28 .84 2.64 1.08 3.72 1.14 4.80 1.44 5.76 1.68

1 2.64 .96 3.36 1.20 4.20 1.32 5.28 1.56 6.24 2.281-1/4 2.94 1.02 3.96 1.44 4.50 1.50 5.88 1.68 6.72 2.401-1/2 3.24 1.08 4.20 1.56 4.80 1.80 6.24 1.98 7.14 2.582 3.60 1.26 4.80 1.80 6.00 1.98 7.08 2.16 7.44 2.88

2-1 /2 3.78 1.38 4.92 1.92 6.36 2.10 7.20 2.34 7.80 3.123 4.32 1.44 5.76 2.16 7.20 2.34 7.68 2.46 8.40 3.483-1/2 4.56 1.56 6.24 2.28 7.68 2.52 8.28 2.70 8.70 3.724 4.92 1.80 7.20 2.40 8.64 3.00 8.76 3.12 9.60 4.44

Manhours include proper set-up for use of power tools with star drill and the removal of excessmaterial.If koredrill is used on brick, deduct 20 % , and on concrete, deduct 10% from manho urs.Manhours do not include scaffolding. See respective table for this charge.

•For heights above 25 feet, add 1% per foot of rise to above manhours.


5/12

EXCAVATION FOR POLESNE T M ANHOURS EACH

Hand ExcavationH o l e D eP t h Sand or I Wet Sticky I m , I n f ? °

w e r

Loam Clay s l a t e H o c k E™ 'J vation

4' Hole Depth 1.95 3.9 0 8.45 9.1 0 .9 15* Hole Depth 2.6 0 5.2 0 9.88 10.4 0 1.046' Hole Depth 4.5 5 9.1 0 12.74 13.78 1.307' Hole Depth 5.20 10.4 0 15.60 16.25 1.568' Hole Depth 6.2 4 12.48 18.2 0 19.5 0 1.95

9' Hole Depth 7.8 0 15.60 20.80 23.4 0 2.3410* Hole Depth 10.40 20 .80 24 .70 27 .30 2.60

Dynamiting(Av. per Hole in Rock) - - - - 8 . 5

Dewatering(Av. per Hole) - - - 8.5

Manhours are for ail labor involved in the above types of excava tion under average conditions and inaccordance with the following typical crews.

Typical Hand Digging Crew-Forem an, truck driver, and 4 workers.Typical Power Digger Crew—Foreman, truck driver, and 2 workers.

Manhours are for maximum hole diameter of 2'C) .Manhours do not include equipment usage.If hole locations are hard to get to and work area is small and limited, add for these factors.


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7/12

HAND EXCAVATION FOR DUCTS M A N H O L E SL A B O R E R M A N H O U R S P E R C U B I C YA R D

TyP e °f So11* I Excavation I ™ « I ^ ̂ I 1 ^

Light General Dry 1.07 1.42 1.89Light General Wet 1.60 2.1 3 2.8 3Light Special Dry 1.34 1.78 2.3 7

Medium General Dry 1.60 2.1 3 2.8 3Medium General Wet 2.1 4 2.8 5 3.7 9Medium Special Dry 1.07 2.4 9 3.3 1

Hard or Heavy General Dry 2.67 3.5 5 4.7 2Hard or Heavy General Wet 3.2 1 4.2 7 5.68Hard or Heavy Special Dry 2.94 3.9 1 5.2 0

Hard Pan General Dry 3.7 4 4.9 7 6.6 1Hard Pan General Wet 4.2 8 5.6 9 7.5 7Hard Pan Special Dry 4.0 1 5 .33 7.0 9

Manhours include picking and loosening where necessary and placing on bank out of way of exca-vation or loading into trucks or wagons for hauling away. Manhours do not include hauling andunloading.*For description of various soils, see Section Introduction.

ROCK EXCAVATION FOR DUCTS AND MANHOLESLabor Hou rs per Cubic YardOperation 1 1

Soft Medium Hard

Hand Drill, Plug and Feathers 15.0 21 .0 30.0

Hand Drill, Blasting 13.0 16.0 22 .0

Machine Drill, Plug and Feathe rs 8. 0 11.0 14.0

Machine Drill, Blasting 4. 0 6.0 7.0

Manhours are for drilling, blasting, and loading per cubic yard of rock in place in ground .For hauling see respective manhour table.Equipment and materials must be added in all cases.

S H O R IN G & B R A C IN G T R E N C H E SNE T MANHOURS per 100 SQUARE F E E T

Operation Laborers Carpenters Truck Dr ivers

Placing 3.0 3.0 0.4

Removing 2.5 - 0.4

Manhours include hauling, erecting and stripping.


8/12

DISPOSAL OF EXCAVATED M ATERIALSMANHOURS PER HU ND RE D (100) CUBIC YARDS

ManhoursTruck Capacity Average Speed Average Speed Average Speed

a n d 10 mph 15 mph 20 mph

Length of Haul Z I ~ ~1 ~ ~~|Truck , . ~* M. * Truck T . _ . t Truck _ . _ . ,

Laborer Total Laborer Total Laborer TotalDriver Driver Driver

3 Cu Yd Truck:

1 Mile Haul 15.0 2.8 17.8 1L6 2.8 14.4 10.5 2.8 13.3

2 Mile Haul 21.8 2.8 24.6 16.2 Z8 19.0 14.0 2.8 16.8

3MileHaul 28.2 3.0 31.2 20.6 3.0 23.6 17.3 3.0 20.3

4 Mile Haul 36.0 3.0 39.0 26.8 3.0 29.8 21.0 3.0 24.0

5 Mile Haul 41.7 2.5 44.2 31.00 2.5 33.5 25.5 2.5 28.0

4 Cu Yd Truck:

1 Mile Haul 11.3 2.1 13.4 8.8 2.0 10.8 7.9 2.1 9.0

2 Mile Haul 16.2 2.1 18.3 12.0 2.0 14.0 10.4 2.1 12.5

3MileHaui 21.6 2.0 23.6 15.8 2.3 18.1 13.2 2.2 15.4

4 Mile Haul 26.4 2.0 28.4 18.7 2.3 21.0 15.6 2.2 17.8

5 Mile Haul 31.3 1.3 32.6 22.2 1.6 23.8 18 5 1.5 20.0

5 Cu Yd Truck:

1 Mile Haul 9.0 1.7 10.7 7.0 1.7 8.7 6.3 1.6 7.9

2 Mile Haul 13.0 1.7 14.7 9.7 1.7 11.4 8.3 1.7 10.0

3 MUe Haul 17.1 1.8 18.9 12.3 1.8 14.1 10.4 L7 12.1

4MileHaul 21.0 2.0 23.0 15.0 2.0 17.0 12.4 1.7 14.1

5 Mile Haul 25.0 1.7 26.7 17.9 1.7 19.6 14 8 1.6 16.4

8 Cu Yd Truck:1 Mile Haul 5.6 1.0 6.6 4.8 1.0 5.8 4.0 1.0 5.02 Mile Haul 8.2 1.0 9.2 6.0 1.0 7.0 5.2 1.0 6.23 Mile Haul 10.5 1.1 1L6 7.8 1.1 8.9 6.5 1.0 7.54 Mile Haul 13.2 1.1 14.3 9.2 1.1 10.3 7.6 1.0 8.65 Mile Haul 15.6 1.3 16.9 10.9 1.3 12 2 9.0 1.1 10.1

IManhours include round trip for truck driver, spotting at both ends, unloading, and labor for minorrepairs.Manhours do not include labor for excavat ion or loading of trucks. See respective tables for thesecharges.


9/12

DISPOSAL OF EXCAVATED MATERIALSMANHOU RS PER HUN DRE D 100) CUBIC YARDS

MANHOURSTruck Capacity Average Speed Average Speed Average Speed

and 20 mph 25 mph 30 mphLength of Haul Truck Truck Truck

Driver Laborer Total Driver Laborer Total Driver Laborer Total

3 Cu Yd Truck:6M ileHa ul 26.0 2.5 28.5 21.4 2.5 23.9 17.6 2.4 20.0

7M ileH au l 27.1 2.3 29.4 22.3 2.3 24.6 18.3 2.2 20.58M ileHa ul 28.7 2.3 31.0 23.6 2.3 25.9 19.4 2.2 21.69M ileHa ul 30.8 2.1 32.9 25.3 2.1 27.4 20.8 2.0 22.8

10 Mile Haul 33.4 2.1 35.5 27.5 2.1 29.6 22.6 2.0 24.6

4 Cu Yd Truck:6M ileH au l 19.3 1.5 20.8 16.0 2.0 18.0 13.4 1.9 15.37M ileH au l 21.0 1.5 22.5 17.4 2.0 19.4 14.8 1.9 16.7

8M ileH au l 23.5 1.5 25.0 19.5 1.8 21.3 16.6 1.8 18.49M ileH au l 26.9 1.3 28.2 22.3 1.8 24.1 19.0 1.8 20.810 Mile Haul 31.1 1.3 32.4 25.8 1.6 27.4 21 .9 1.5 23.4

5 Cu Yd Truck:6M ileH au l 15.6 1.4 17.0 14.1 1.6 15.7 11.7 1.5 13.27M ileH au l 17.3 1.4 18.7 15.5 1.5 17.0 12.9 1.4 14.38M ileH au l 19.8 1.3 21.1 17.5 1.5 19.0 14.5 1.3 15.89M ileH au l 23.2 1.3 24.5 20.3 1.2 21.5 16.8 1.1 17.9

10 Mile Haul 27.4 1.2 28 .o 23 .7 1.2 24 .9 19.7 1.1 20.8

8 Cu Yd Truck:6M ileH au l 9.8 1.2 11.0 9.2 1.0 10.2 7.7 1.0 8.77M ileH au l 11.5 1.2 12.7 10.6 1.0 11.6 8.9 1.0 9.98M ileH au l 14.1 1.1 15.2 12.7 1.0 13.7 10.6 0.9 11.59M ileH au l 17.4 1.1 18.5 15.4 0.9 16.3 12.9 0.9 13.8

10 Mile Haul 21.7 1.0 22.7 19.0 0.9 19.9 15.9 0.8 16.7

Manhours include round trip for truck driver, spotting at both ends, unloading, and labor for minorrepairs.Manhours do not include labor for excavation or loading of trucks. See respective tables for thesecharges.


10/12

MAC HI NE & H AN D BACKF ILLAverage for Sand or Loam, Ordinary Soil, Heavy Soil and Clay

MANHOURS PER UNITS LIST ED

Manhours

U e m U n i t L a b o r e r I ° P e r I O U e r I T o t a lEngr.

Hand Place cu yd .55 - - .55

Bulldoze L oo se Material 100 cu yd s - 3.32 - 3.32

Clamshell

1 cub ic yard bucket 100 cu yd s - 1.60 1.60 3.203/4 cub ic yard bucket 100 cu yds - 2.00 2.00 4.001A cub ic yard bucket 100 cu yds - 2.75 2.75 5.50

Hand SpreadStone or gravel fill cu yd .40 — - .40Sand fill cu yd .35 - - .35Cinder fill cu yd .40 - - .40

Tamp by Hand cu yd .60 — — .60

Pneumatic Tamping cu yd .25 — — .25

Hand Place units include p lacing by hand with shovels loose earth w ithin hand -throwing distance of

stockpiles. This unit does not include compaction.Bulldoze Loose Material units include the moving of prestockpiled loose earth over an area . l mshell units include the placemen t of ma terials from reachable stockpiles.Stone Sand and Cinder Spread units include the hand placing, with shovels, these materials fromstrategically located stockp iles.Tamp By Hand and Penumatic Tam ping units include the compacting of prespread materials in 6layers. Manhours for this type work are show n a s laborer hours. Should air tool operator be requiredfor this work, substitute his time for laborer hours.Manhours do not include trucking or fine grading. See respective tables for these charges.


11/12

D UC T E N C A S E M E N T M A N H O L E F O R M SMANHOURS PER HUNDRED SQUARE FE ET

ManhoursDescription I I T r u c k I

Carpenter Laborer Drive r T o t a l

WOOD FORMS

Duct Encasementor Manhole Footings:

Fabricate 2 .50 .75 - 3 .25Erect 2 .00 1.00 .08 3.08Strip & Clean . 5 0 JU50 108 2.08

TOTAL 5 .00 3.25 .16 8.41

Manhole Walls:

Fabricate 2 .50 .75 - 3 .25Erect 3 .50 1 .00 .10 4 .60Strip & Clean 1 .00 2.50 .1 0 3.60

TOTAL 7 .00 4.25 .2 0 11.45

METAL FORMS

Metal Wall Forms:

Erect & Brace 4 .5 0 1.75 .15 6.40Strip & Clean . 50 2.0 0 .2 5 2.75

TOTAL 5 .00 3 .75 .4 0 9 .15

FACTORS FOR RE-USEOF WOOD FORMS

Repairs 1st Re-Use 1.25 .5 0 - 1.75Repairs 2nd Re-Use 1 .50 .5 0 - 2 .00Repairs 3rd Re-Use 2 .00 .75 - 2 .75Oiling after each Re-Use - 1.00 - 1.00

Manhours include a ll operations as outlined above.For reuse of wood forms add factors as appear above.Manhours do not include excavation, the installation of ducts or the placement of concrete. S eerespective tables for this charges.


12/12

DUCT ENCASEMENT MANHOLE CONCRETE

M A N H O U R S P E R C U B I C YA R D

ManhoursDesc r ip t i on 1 1Laborer Carpenter Total

Duct Enc asem ent & Manhole F oot ing s:

Ready-Mix from Truck .50 - .50

Ready-Mix with Wood Chute .60 .1 0 .70

Manhole Walls :

Ready-Mix from Truck .60 - .60

Ready-Mix with Wood Chute .75 .1 2 .87

Manhours include the placement of ready-mix con crete , vibrating, and p uddling.

If wood chutes are used, ample carpenter t ime has been allowed for the fabrication and repairs orminor chutes.Manhours do not include m ixing or hauling or finishing of concrete.

plaaning and estimation

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