ST9801-CS000410~'EL£X'~2OSgO
FAX (214) 352-320!
TELEPHONE (214) 358-6581
ED BELL CONSTRUCTION COMPANY
POST OFFICE SOX 540787 !0605 HARRY HINES
DALLAS. TEXAS 75354-0787 DALLAS. TEXAS 75220
April 10, 2000
Mr. Kevin C. Young, E.I.T.
Freese and Nichols, Inc.
1701 N. Market, Suite 500, LB 51
Dallas, Texas 75201
Re:
Coppell Road Reconstruction
SH 121 to Sandy Lake Road
Coppell Project #: ST 98-01
Dear Mr. Young:
It is our understanding that the City of Coppell intends to issue a change order deleting the lime
stabilization from SH 121 to the vicinity of the box culvert crossing and add ½ sack of cement to the
concrete utilized for the concrete pavement in that area. If the lime stabilization item is deleted from the
contract, then we will need a subgrade preparation item added to the change order. Our price for
subgrade preparation is $1.26 per SY. I have enclosed our basis of estimate sheets for your review.
Additionally, it is our understanding that the sandy material that will ultimately become the subgrade for
the roadway has no PI value. We are aware that several engineers have reviewed that data relevant to
this issue and have approved the proposed course of action; however, we are concerned about the
following issues should the City ultimately decide to pursue this course of action:
1. Placement of a rigid pavement directly on top of an untreated flexible subgrade will create
differential stress loading that could ultimately lead to early failure of the pavement.
2. Based upon testing by the City. the raw subgrade in question has no cohesive value. Any
number of circumstances could cause the subgrade to migrate leading to the formation of voids under the
pavement. A stabilized layer of subgrade will add an additional factor of protection for the pavement
and help to prevent early failure of the pavement.
If you have any questions regarding this information, don't hesitate to contact our office.
rely,
onstructi~Company
Weblr
Project Engineer
Mr. Kent Collins, P.E.~ Engineering and Public Works, City of Coppell
255 Park~vay Blvd., Coppell, Texas 75019-4409
AN EQUAL OPPORTUNITY EMPLOYER
CONTPJ%CTOR~S BASIS OF ESTI~TE
FOR ITE/~S TO BE ADDED BY SUPPLE/4ENT~J~ AGP. EF-~4ENT
PROJECT #: ST 98-01 WORK ITEM:
PROJECT: COPPELL ROAD SUBGPJ~DE PREPAPJ~TION
LIMITS: SH 121 TO SANDY LAKE ROAD ESTI~U~TED QTY: 13,436.000
CITY: CITY OF COPPELL SY
INDEX
LABOR CLASSIFICATION
OPEPJ~TES : HOURLY APPROX. TOTAL
; EQ. ~ RATE ~ NRS i
16' $370.081
SUPERINTENDENT 1 ~ $23.13
FOREMAN i ........
BL~D-E OPERATOR 5 , $14.00 48 $672.00
LO~DER ~PEP~A~OR ..... 3 - --$13.~0 ' 48 ' '~'624.~6
~COM~ACTO~ OPE~TOR 6 $11.50 ~ [ $552
~WATER TRUCK OPE~TOR 4 $11.00 48 $528.00
~ $9.50 48 $456.00
......... ~ 0 $0.00
.... ~o.oo o ~o.oo
............ ~o~ ' o ' ~o. o5-
............ ~0.00--]
..... $0.00
r .... $0.00
.................. ~o. oN
............. ~ $0.00
; i ............ $0.oo i
....................... $0.00
....................... $0,00
............ ~o.oo
...... $0.00
.................. $0. O0
; ............................ ~'RBo~ ~2,a5~'~~
PLUS L~OR BURDEN (T~ES, INSU~NCE, ETC,)
TOTAL LABOR COSTS $6,823'22 ~
SHEET 1 {LABOR)
CONTRACTOR'S BASIS OF ESTIMATE
FOR ITEMS TO BE ADDED BY SUPPLEMENTAL AGi~EEMENT
PROJECT %: ST 98-01 WORK ITEM:
PROJECT: COPPELL ROAD SUBGRADE PREPARATION
LIMITS: SH 121 TO SANDY LAKE ROAD ESTIMATED QTY: 13,436.000
CITY: CITY OF COPPELL SY
' EQUIPMENT-DESCRIPTIO~ ......... H%URLY APPROX.' TOTAL
EQ ~ RATE ~ HRS
SUPERINTENDENT PICKUP 1 L $12.11. 16 $193.76
FOREMAN PICKUP ~ ~- ~ $9.84 32 $314.88
CAT ~0 MOTOR GRADER 5 $53.98 24 $1,295.52
WATER TRUCK 4 $22.83 24 $547.92
3 $37.61
CAT 93~ ~OADER ..... i 24 $902.64
REX 3-40 COMPACTOR
$0.00 0 $0.00
...... T ' $0.00
, $0. O0
$0.00
........... 2o.~o
...... r ~ $o.oo
..................... $o.oo
.................. $ o--. o~
$o.o0
............ ~ ............ w -- $0.00
........ ' $0.00
.................... ~ ~0.00
............. $o.oo
.............. ~ ..... % .- so.o¢~-
$0.00
..................... $--o .~V-
TOTAL EQUIPMENT COSTS*~ff~'040'3~
RENTAL RATE BLUE BOOK =
(MONTHLY RATE X ADJUST FACTOR X REGIONAL FACTOR}
176 + 0PER COSTS
SHEET 2 (EQUIP)
CONTRACTOR'S BASIS OF ESTIMATE
FOR ITEMS TO BE ADDED BY SUPPLEMENTAL AGREEMENT
PROJECT ~: ST 98-01 WORK ITEM:
PROJECT: COPPELL ROAD SUBGRADE PREPARATION
LIMITS: SH 121 TO SANDY LAKE ROAD ESTIMATED QTY: 13,436.000
CITY: CITY OF COPPELL S¥
MATERIAL TOTAL
RENTE[ DUMP TRUCK
UNIT OF EST
MEASURE QTY
HR 80,000
0.000
0.000
0.000
0.000
0.000
UNIT
PRICE
$35.00
$0.00
$0.00
$0.00
$0.00
$0.00
0. 000 $0.00
$2,800.00
$0.00
$0.00
$0.00
$0.00
~o.oo
$0.0o
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
$0.00
TOTAL NATERiAL COSTS $2,800.00
?OTAL COS% DF ~kBOR, EQUIPMENT AND MATE~YkLS $14,663.54
PLUS INDIRECT COSTS )VERHEAD. BOND,-E~C. ~b'.00% ' $1,466.3~-
PLUS PROFIT ' 5.00~' $8067T~-
~OTAL COSTS PF ADDED ITEM $16,936.39
UNIT PRICE $1.26