GENERAL42606

• Permit No: C1980004
• IBM Index Class Name: General Documents
• Doc Date: 1/9/1987
• Doc Name: Midterm Review Findings Document
• Permit Index Doc Type: Findings
• Media Type: D
• Archive: No

EARTHWORK ESTIMATING - SCRAPER 'dORK
TASK DESCRIPTION
Touso-L r~u,~oum1 ~ rc=lrstr-r,a i:oH -
DRAFT
HOURLY EQUIPMENT COST: 1
Machine make and model ~a! G/S ECeNZt.,a attachments N(~(~1Q
adjusted Operator Cost Per Nour'

shift
no. hours
oer
day days
oer
week base
rental
rate/h r'`
operating
cost/hr base
wage
rate/hr
overtime
adjustment shift
premium
adj. total
eouio.
cost/hr
1 ~ S g SG_~'/ ~, 9,Y0 $Iti_~( ~/~~+ N/A $ 95.E
-- - ^r~ ~_
3 _ -"- -.`
.~
Sh4S-+~af_~S-f^:~r.,.r~- =>S~AI iut,ai - ~ 7S.>S~ inr.
$ 9$.87 /hr. divided by _~ shift/~/day = $ > S.E'Z average total equip. cost/hr.
MATERIAL QUANTITIES:
~07~.~G,J_"r18CY x 1.~ s:vell factor =
'derificatian method s} used t,~~ i:~-.?,r ;akm, rr~,. Ta!
LCY
gOURlY PRODUCTION:
'gaol distance = 2 O ft., return distance = L,/0 J ft., altitude = ~ ~ t.
Total resistance haul : -t 6 ~` a rolling res. plus i8.3 grade res. *or- =+-~4.?°~
Total resistance (return): t 6 ~ rall;ng res. plus - s.3 ~ grade res. (+or-)=~"
19ote: for grade resistance, (+) = unfavorable, -T ! favorable (downhill)
'~j~b S: TZ Ta c~.rt::,y:(, lauC n~ t°='ta rr=~ -,, aL C~cv-use o4 hoard ~p T~lv~nr~ ~'. ~'u:p.
Cycle time: Load (6278 0.3 min., 637D = 0.9 min., 55-c = 1.0 min) _ .`1 min.
Haul -see distance vs. time tables in Section VII =5•~ min.
A.anevver and spread = • ~ min.
Return - see distance vs. time tables in Section `III =1-~~ min.
total cycle time =?.R 'yin. ~c~ic'e
50 min./hr divided by `? ~ minutes/cycle = 7 ~ `/ cycles /h r,
f ~ LCY bowl capacity (heaeed)x ~G ~' cyclPS/h r. _ /;3-o~LCY/h r. (unadj,l
;.g..7-LCY/hr. x -~3 job efficiency* ~%%F} altitude adj. =!01_i? LCY/hr (adj.)
*average efficiency for all shifts utilized
F1eeL oraduction = / no. scraper used x!0;.!_ LCY/hr/scraper =;;7?./? LCY/hr/fleet
J08 COST:
// j;i' LCY divided by /~ ~_ i' LCY/h r. _ //,~'(, total ,iob hours
total material vol. Fleet prod.
$ ~;._ /hr. avg. scraper cost x i~ scrapers used = $ - '~ fleet cost/hr
hrs x $ 'S. t<.' .'. /h r. _ $ ;, D~ "~ ~' 7 Total Job Cost
tot a-1 joo time hour y r zet cost
unit cost/LCY = $ C-?. ~ divided h_v i l 3 O = $ , 1~ /LCY
total ,job cost total material vol.