Summary Bar Chart

alligatorsavoryΠολεοδομικά Έργα

26 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

73 εμφανίσεις






IV.A.
1

|
P a g e

Summary Bar Chart

MACH 5

AE 472


Schedule Submission








IV.A.
2

|
P a g e

Schedule

Summary

MACH 5

AE 472


Schedule Submission



Assumptions


In the design, fabrication, and delivery stage of the Materials and Life Science II building
systems, MACH 5 assumed one

month duration.
On similar projects of this magnitude, MACH
5 has experienced a
30
day mobilization period
in which activities such as excavation can begin
concurrently.


Similarly, our historical data as well as previous experience allows us to estimate
the durations of
the design/fab/deliver portions to be approximately one month.
MACH 5 has
also applied our experience in estimating the Furniture, Fixtures, and Equipment to assume a
duration of 30 days. Furthermore, the Start Up and Testing activity required a similar
prediction
and based on the nature of th
e activity MACH 5 selected one month
duration. Furthermore,
MACH 5 Scheduling Department added logic to the schedule to best represent

our construction
sequencing.
Below we have included the detailed calculation des
criptions of the key activities in
our summary schedule. Each calculation is based on the most recent RS Means Cost Data.


Excavation


MACH 5 has determined from industry experience that it will be most efficient to use two 3CY
Bulk Excavators,
each with a dail
y output of 2080 CY/day. T
he total volume of earth to be
excavated is

104,445 CY
. Based on calculations the detailed schedule duration will be 26 days.


Backfill


For the safety of the workers in the building footprint the excavation will be sloped back to
prevent cave
-
ins. Therefore, once the foundations are in place the ground will need to be
replaced. In accordance with the provided documentation no dozing equi
pment will be allowed
within eight feet of the foundation walls. With a daily output of 800 CY/day, the dozer will take
3 days to replace 1718 CY. The last eight feet to the foundation wall will be back filled by hand.
Calculations show that with a prod
uctivity of
285 CY/day backfilled by hand and with a total of
6170 CY, the fill will be replaced in 22 days. Total duration for all backfill will be 25 days.


Piles


Design documents call

each pile’s depth to be 35 feet,

resulting in a total

of 21,240 ve
rtical feet.
At 680 feet per day
, the piles will be placed in 73

days.


Foundation Concrete & Slab on Deck


The duration for concrete was separated into foundation and decking because the two activities
will occur at different points in the construction

process. Furthermore, foundation concrete
includes slab on grade, foundation walls, piles and pile capes. Based on MACH 5’s industry
experience the foundation concrete and slab on deck will take
83 and 80

days, respectively.








IV.A.
3

|
P a g e


MACH 5


Schedule Risks



AE 472


Schedule Submission



MEP Package


With the Mat
erials & Life Sciences Building II being a state of the art research facility MACH 5
expects the intricate MEP system to take additional time for installation and will result in
duration of 100 days.


Fenestration


Based on the percentage of fenestration

façade, RS Means declar
ed the daily output for window
glass to be 480 SF
/day. Fenestration represents 25% of the total façade
, a total of 31,167 ft
2

of
w
indow
glass,
and will have a duration time of 65 days.


Precast Panel


Precast represents
75% of t
he total fa
çade area or 93,501
ft
2
.
At a daily output of 1024
ft
2
/day
the total duration will be 92 days.


Steel



The duration for the Steel design, fabricate and deliver was determined by utilizing information
lectured in an AE 475 Steel Procurement
Seminar. The duration of erection has been determined
utilizing RS Means Cost Data for columns and beams. To develop the durations the average
column size and beam size were used for daily outputs. The most common column size is a
W14x90. The daily out

from RS M
eans Cost Data is 960 linear ft
/day. The total length of all
columns adds to 12,506 linear f
ee
t. Therefore, the duration for erecting steel columns is 14 days.
The most common beam size is a W21x44. The daily out from RS Mea
ns Cost Data is 1,
064
linear ft
/day. The total length of all the beams adds to 51,715 linear f
ee
t. Therefore, the duration
for erecting steel beams is 49

days.
Due to possible hold ups often resulting in schedule delays
and allowance of 10 additional days have been added
to the steel erection. In
total
the duration
for steel
erection is
7
3 days.


Additional Assumptions


The rest of the activities required use of MACH 5 historical data and previous similar buildings
to obtain approximate durations. These include
activities such as interior metal stud framing,
drywall, and finishes. Durations for these are based on similar buildings in the area, resulting in
similar trade productivities and resulting durations.




References


The majority of the unit
productivities

for labor were obtained using RS Means Cost Data. All
other
productivities
were taken from previou
s buildings and historical data. Revit Structures was
also used for
quantity take
-
offs for use in duration calculations.




IV.A.
4

|
P a g e

Schedule Risks

MACH 5

AE 472


Schedule Submission



Unforeseen Site Conditions


The
most threatening
risk
s

to the

MACH 5 schedule are
complications which can cause
delays
that will affect o
u
r c
ritical path. To minimize the e
ffects of
these
delays
,

MACH 5

plans to
adhere to the attached schedule and
to
avoid out of sequence work.

The first risk MACH 5 could

face
is the possibility of

any unforeseen
site
con
ditions exposed by excavation; however, MACH
5 has done extensive site investigation and analysis an
d is confident that this will not be an issue.
MACH 5 has performed numerous tests and made the results available to the owner as proof of
our confidence that there will be no obstacles to overcome during excavation. Because of this,
there is a clause in

our contract stating that any unexpected complications will be taken care of
by MACH 5 at the owner’s expense.


MEP System


Another
aspect of the project which has the potential to cause serious complications is the
coordination

of the
MEP
system
.

If c
oordination is not properly planned, there is a good
possibility that such a complex MEP system will result in many clashes during installation.

Luckily,
MACH 5 Modeling Department
specializes in BIM clash detection. The Modeling
Department
will
incorpor
ate

the MEP plans into the 3D model and run clash detection software
to find and correct any clashes

prior to construction. This will eliminate complications which
arise when a contractor discovers clashes during installation. While MACH 5 will prepare a

clash report, any redesign will be the responsibility of the mechanical contractor.


Structural System


Additionally, t
he complex design of the structural system
will require extensive
coordination and
communication. The greatest risk will occur during

the connection construc
tion of the
cantilevered floors. MACH 5 will do everything possible to prevent clashes and complications
by running clash detection software prior to construction. Like the MEP system arrangement,
MACH5 will be responsible for pro
viding a clash report, and the structural consultant will be
expected to develop acceptable solutions to the clashes.


Spatial Planning



Furthermore,
many complications can be caused by poor spatial planning. In such a complex
building, special clashes
could cause serious delays and a lot of rework. T
o avoid congestion
,

the work force has been separated to work in separate
zone
s of the building so the contractors
can perfo
rm at their maximum efficiency. MACH 5 will also

use a 4D space loaded model

to
prevent spatial clashes. This will allow for a much smoother
flow of work. Because MACH5 is confident in our spatial planning abilities, we will take
responsibility for any spatial clashes that due arise, assuming that all contractors are abiding by
the
schedule and space plan.








IV.A.
5

|
P a g e


MACH 5


Schedule Risks



AE 472


Schedule Submission



Weather


Central Pennsylvania weather poses a serious threat to the schedule of the Materials and Life
Sciences II building. MACH 5 has coordinated the schedule and the estimate, allowing
additional time and money for winter

weather protection so that the project can continue to run
smoothly through the cold winter months. As long as all activities remain on schedule and take
the appropriate precautions as outlined by MACH5, we will assume responsibility for any
complication
s which arise due improper preparations for winter weather conditions.


Equipment


As is the case with any construction project, equipment breakdowns can cause serious delays in
the schedule. Because some equipment is owned by contractors and some equipment is rented, it
can be difficult to ensure that all equipment is running properly.

MACH 5 has developed a plan
to overcome this obstacle. Equipment problems must be immediately logged so that contracted
mechanics can fix malfunctioning equipment at the end of each day. In addition to this, MACH
5 is taking a proactive approach by mon
itoring equipment function. Mechanics will also be
hired to randomly inspect equipment on the jobsite. Although this will cause a higher upfront
cost, MACH 5 believes that preventative maintenance is the best way to eliminate schedule
delays caused by f
aulty equipment. Contractors using each piece of equipment are responsible
for tracking its performance, and the contracted mechanics will be responsible for ensuring that
the equipment is running properly.


Materials


Complications could arise
because of long lead time items and fabrication complications;
however, MACH 5 is confident that the project was well planned, allowing plenty of time for
fabrication and delivery of materials. All subcontractors and suppliers are also prepared to
deliver

goods and services on time as scheduled. Subcontractors will be held responsible for
their materials and services.


Site Security and Safety


Site security and safety always pose serious threats to construction projects. Construction sites
are especiall
y dangerous on highly populated college campuses. Safety issues could cause
serious threats to workers, students, visitors, and ultimately, affect the schedule. MACH 5 will
be responsible for overall job site safety. We will take all possible precaution
s to protect
workers and everyone on campus.





IV.B.
6

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission









IV.B.
7

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission







IV.B.
8

|
P a g e


MACH 5


Section Divisions



AE 472


Schedule Submission





Column Line Separators


Section A


Column Lines BB


W (including)

Section B


Column Lines W


R (including)

S
ection C


Column Lines R


L (including)

Section D


Column Lines L


F


Section E


Column Lines F


11


(45


line from K6
-
F10)

Section 1


Column Lines 21


16 (in
cluding)

Section 2


Column Lines 16


11 (including)

Section 3


Column Lines 11


6 (including)

Section 4


Column Lines 6
-
1 (including)

Section
A

Section
B

Section
C

Section
D

Section
3

Section
2

Section
1

Section
4

Section
E





IV.B.
9

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission








IV.B.
10

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission








IV.B.
11

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission








IV.B.
12

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission








IV.B.
13

|
P a g e


MACH 5


Detailed CPM Schedule



AE 472


Schedule Submission







IV.B.
14

|
P a g e


MACH 5


Cash Flow Projection



AE 472


Schedule Submission




Cash flow projection is a valuable tool for a Construction Management Agency such
as MACH
5. By understanding the amount of cash being received and spent by a project in a defined period
of time, we can better manage the project. Cash flow can be used as an incentive for good
performance or a penalty for poor performance

as well as to o
rganize a
payment

schedule

tool

for a
30 day cycle. Cash Flow
can

also be an asset for an owner. Retainage can be calculated
using a cash flow chart. For this project we propose using cash flow for many construction
management purposes. We will develop a s
chedule of values and integrate that into a cost loaded
schedule. As tasks are being completed, we will use the cost
-
loaded schedule to determine th
e

amount the subcontractor needs to get paid for the completion of that specific task. These
payments will b
e on a monthly basis. Below is our preliminary month cash flow projects and
project cash flow project. These will be used to analy
ze

whether the project is on schedule and
on budget based on the amount of payment received in and paid out.



This graph
shows the monthly cash flow for the Material and Life Sciences II Building.



This graph shows the cumulative cash flow for the Material and Life Sciences II Building.
$0
$1,000,000
$2,000,000
$3,000,000
$4,000,000
$5,000,000
$6,000,000
$7,000,000
$8,000,000
Sep-08
Dec-08
Mar-09
Jul-09
Oct-09
Jan-10
May-10
Aug-10
Monthly Cash Flow

Monthly Cash Flow In
Monthly Cash Flow Out
$0
$10,000,000
$20,000,000
$30,000,000
$40,000,000
$50,000,000
$60,000,000
$70,000,000
$80,000,000
$90,000,000
Sep-08
Dec-08
Mar-09
Jul-09
Oct-09
Jan-10
May-10
Aug-10
Cumulative Cash Flow

Cash Flow In
Cash Flow Out




IV.B.
15

|
P a g e


MACH 5


Payment Schedule


AE 472


Schedule Submission




Monthly Payment Schedule


Month

Paid Out

Cash Flow In

Oct
-
08











General
Requirements

-
$170,888.23



Excavation

-
$263,894.32



Concrete

-
$715,139.21



Total

-
$1,149,921.76











Net Cash Flow

-
$1,149,921.76







Nov
-
08











General
Requirements

-
$85,444.11



Excavation

-
$1,055,577.28



Concrete

-
$1,841,247.67



Total

-
$2,982,269.06



Owner



$1,248,558.89









Net Cash Flow

-
$1,733,710.17







Dec
-
08







General
Requirements

-
$85,444.11



Concrete

-
$2,252,216.91



Steel

-
$1,154,895.02



Total

-
$3,492,556.04



Owner



$3,080,906.19









Net Cash Flow

-
$411,649.85







Jan
-
09











General
Requirements

-
$85,444.11



Concrete

-
$2,347,858.58



Steel

-
$1,796,503.35



Total

-
$4,229,806.04



Owner



$3,591,193.16









Net

Cash Flow

-
$638,612.88







Feb
-
09











General
Requirements

-
$85,444.12



Concrete

-
$1,514,253.94



Steel

-
$2,694,755.00



Total

-
$4,294,453.06



Owner



$4,328,443.16









Net Cash Flow

$33,990.10


Month

Paid Out

Cash Flow In

Mar
-
09











Backfill

-
$659,735.80



Concrete

-
$807,737.22



Steel

-
$2,053,146.67



Electrical

-
$3,932,259.38



Total

-
$7,452,879.07



Owner



$4,393,090.19









Net Cash Flow

-
$3,059,788.88







Apr
-
09











Backfill

-
$659,735.80



Concrete

-
$143,462.50



Electrical

-
$3,495,341.67



Precast

-
$590,911.89



Elevator

-
$126,852.92



Drywall

-
$412,519.69



Total

-
$5,428,824.47



Owner



$7,551,516.20









Net Cash Flow

$2,122,691.73







May
-
09











General
Requirements

-
$427,220.57



Electrical

-
$3,058,423.96



Precast

-
$1,181,823.78



Window

-
$664,389.69



Elevator

-
$126,852.92



Drywall

-
$701,283.47



Total

-
$6,159,994.39



Owner



$5,527,461.60









Net Cash Flow

-
$632,532.79







Jun
-
09











General
Requirements

-
$170,888.23



Precast

-
$1,181,823.78



Window

-
$1,181,137.23



Elevator

-
$126,852.92



Drywall

-
$701,283.47



Total

-
$3,361,985.63



Owner



$6,258,631.52









Net Cash Flow

$2,896,645.89





IV.B.
16

|
P a g e


MACH 5


Payment Schedule


AE 472


Schedule Submission





Month

Paid Out

Cash
Flow In

Jul
-
09











General
Requirements

-
$170,888.23



Precast

-
$1,181,823.78



Window

-
$1,328,779.38



Elevator

-
$126,852.92



Drywall

-
$742,535.44



Total

-
$3,550,879.75



Owner



$3,460,622.76









Net Cash Flow

-
$90,256.99







Aug
-
09











General
Requirements

-
$170,888.23



Precast

-
$1,181,823.78



Window

-
$664,389.69



Elevator

-
$126,852.92



Mechanical

-
$3,169,315.25



Drywall

-
$701,283.47



Backfill

-
$45,814.99



Total

-
$6,060,368.33



Owner



$3,649,516.88









Net Cash Flow

-
$2,410,851.45







Sep
-
09











General
Requirements

-
$170,888.23



Elevator

-
$126,852.92



Mechanical

-
$5,387,835.93



Drywall

-
$577,527.56



Backfill

-
$77,885.48



Total

-
$6,340,990.12



Owner



$6,159,005.46









Net Cash Flow

-
$181,984.66







Oct
-
09











General
Requirements

-
$85,444.11



Elevator

-
$126,852.92



Mechanical

-
$5,387,835.93



Drywall

-
$701,283.47



Backfill

-
$77,885.48



Total

-
$6,379,301.91



Owner



$6,439,627.25









Net
Cash Flow

$60,325.34


Month

Paid Out

Cash Flow In

Nov
-
09











General
Requirements

-
$85,444.11



Elevator

-
$126,852.92



Mechanical

-
$5,387,835.93



Drywall

-
$701,283.47



Backfill

-
$77,885.48



Total

-
$6,379,301.91



Owner



$6,477,939.04









Net Cash Flow

$98,637.13







Dec
-
09











General
Requirements

-
$85,444.11



Elevator

-
$126,852.92



Mechanical

-
$5,070,904.40



Drywall

-
$701,283.47



Backfill

-
$77,885.48



Total

-
$6,062,370.38



Owner



$6,477,939.04









Net Cash Flow

$415,568.66







Jan
-
10











Elevator

-
$126,852.92









Mechanical

-
$950,794.57



Drywall

-
$660,031.50



Paint

-
$79,537.80



Backfill

-
$77,885.48



Total

-
$1,895,102.27



Owner



$6,161,007.52









Net Cash Flow

$4,265,905.25







Feb
-
10











General
Requirements

-
$85,444.11



Elevator

-
$126,852.92



Paint

-
$318,151.20



Backfill

-
$77,885.48



Total

-
$608,333.71



Owner



$1,993,739.41









Net Cash Flow

$1,385,405.70





IV.B.
17

|
P a g e


MACH 5


Payment Schedule


AE 472


Schedule Submission





Month

Paid Out

Cash
Flow In

Mar
-
10











Elevator

-
$126,852.92



FF&E

-
$896,300.67



Backfill

-
$73,303.97



Total

-
$1,096,457.56



Owner



$706,970.85









Net Cash Flow

-
$389,486.71







Apr
-
10











FF&E

-
$448,150.33



Commissioning

-
$563,181.50



Backfill

-
$73,303.97



Total

-
$1,084,635.80



Owner



$1,195,094.70









Net Cash Flow

$110,458.90







May
-
10











General
Requirements

-
$683,552.91



Commissioning

-
$563,181.50



Total

-
$1,246,734.41



Owner



$1,183,272.95









Net Cash Flow

-
$63,461.46








Month

Paid Out

Cash Flow In

Jun
-
10











General
Requirements

-
$598,108.80



Total

-
$598,108.80



Owner



$1,345,371.55









Net Cash Flow

$747,262.75







Jul
-
10











General
Requirements

-
$512,664.68



Total

-
$512,664.68



Owner



$696,745.94









Net Cash Flow

$184,081.26







Aug
-
10











Owner



$611,301.82









Net Cash Flow

$611,301.82