FAKULTI KEJURUTERAAN AWAM DAN ALAM SEKITAR
BFC31602 CONTRACT AND ESTIMATION SEKSYEN 2 TITTLE: Project “Cadangan pembangunan 620 unit Perumahan Rakyat 1 Malaysia with 300 unit of terrace house type A, 192 unit type B and 128 unit type C, 1 unit Kindergarten, 1 unit Mosque and 1 unit Multi-Purpose Hall located at Kg. Lumat Beaufort, Sabah.”
GROUP 7 NAME
MATRIX NO
JACKSMITH L’DRECKSSON CLAUDIUS CLAUDIUS
CF150117
MUHAMAD HAZIQ B SAIPOLBAHRI
DF140034
MUHHAMAD SHAFIQ BIN ABDUL
DF140072
JALIL MU’IZZUDDIN BIN HERMAN HERMAN
DF140001
SAMI MARESH ABDO SAIF AL-
AF140189
SHARABI
LECTURER: ENCIK SYED BURHANUDDIN HILMI BIN SYED MOHAMAD
TABLE OF CONTENT
PAGE `1.0
INTRODUCTION
1
2.0
BACKGROUND 2.1 CASE STUDY
2
3.0
OBJECTIVE
3
4.0
METHODOLOGY
4
5.0
CALCULATION
5.1 5.2 5.3 6.0
PRELIMINARY COST ESTIMATING BUILD UP RATE TAKING – OFF
CONCLUSION
APENDIX
5 7 9 16
1.0
INTRODUCTION
Estimation knowledge is one of the crucial part in being a good engineer instead of accountability and integrity. Estimation in developing a contract document consists three major steps which are preliminary, build-up rate and taking off. So, upon the completion of this estimation project where we need to estimate the total cost of a building, our group has chosen a building which is multi- purpose hall for construction project of “Pembangunan PR1MA terrace house”. Preliminary means a description of a project that allows the contractor to assess costs. Generally, the purpose of preliminaries is to describe the works as a whole, and to specify general conditions and requirements for the project. The costs attached to preliminaries may also be referred to as preliminaries or prelims or site overheads or general cost items or expenses. The cost of administering a project and providing general plan, site staff, facilities, and site based services and other items not included in the rate. By completing the task, we could know the method to determine the early cost by using volume method and floor area method. While build-up rate means the method of formulating budgets or projections by estimating the cost of performing or achieving predetermined tasks or objectives. By completing the build-up rate task, we could gain the knowledge to calculate the cost of excavation. Last but not least, taking off which means a detailed measurement of materials and labour needed to complete a construction project. By completing the taking-off task, we are able to calculate the cost of every element in the drawing and the general c ost.
2.0
BACKGROUND
2.1
CASE STUDY
The project title is Cadangan pembangunan 620 unit Perumahan Rakyat 1 Malaysia with 300 unit of terrace house type A, 192 unit type B and 128 unit type C, 1 unit Kindergarten, 1 unit Mosque and 1 unit Multi-Purpose Hall located at Kg. Lumat Beaufort, Sabah. The main contractor for this project is Stone EPC (Sabah) Sdn Bhd. With a lot of building type in this housing project, our Project is only estimating the taking off, build up rate and method estimating of Multi Purpose Hall. The Multi Purpose Hall is using IBS (interlocking brick system) brick and has 2 level of building. The Foundation type that we are using is F8 shows in drawing with size 2.5 x 2.5 x 0.45 and ground beam GB14 with size 150 x 500. The Multi Purpose Hall drawing and detail were attached in appendix including beam detailing, footing plan, ground beam and slab drawing.
Type C
Office SEPC
Type B
Surau Dewan Tadika
Type A
Site Plan PR1MA Woodford Estate, Beaufort 3.0
OBJECTIVE
1. To estimate project cost using preliminary estimating techniques (floor area and building volume method). 2. To calculate build-up rate for specific work. 3. To perform the taking off quantities for specific work elements of the project.
4.0
METHODOLOGY
START
FIND A DRAWING OF PROJECT
TAKING OUT ALL OF INFORMATION OF STRUCTURE MEASUREMENT
MAKE A CALCULATION OF 1. PRELIMINARY (FLOOR AREA AND VOLUME METHOD) 2. BUILD UP-RATE 3. TAKING OFF
END
5.0
CALCULATION
5.1
PRELIMINARY COST ESTIMATING
Information 1) This building we open in 3 parts A,B,Cand D the measurement of this 3 parts i s :
(PART A AND B) WIDTH – 30125 MM or 30.125 M
HEIGHT – 3600 MM or 3.6 M
LENGTH – 28125 MM or 28.125 M
PART C WIDTH – 20000 MM or 20 M
HEIGHT – 3000 MM or 3 M
LENGTH – 20125 MM or 20.125 M
PART D WIDTH – 20000 MM or 20 M
HEIGHT – 3000 MM or 3 M
LENGTH – 20125 MM or 20.125 M 2) A building multipurpose hall with 250 mm thick block wall (measure centre to centre) 3) A similar building multipurpose hall was built with a price rate of RM 250/m 3 and RM 150/m2
Calculation: Building volume method (SUM ALL PART A, B, C AND D) =lxwxh = 2 ([28.125+ (0.250)] X [30.125 + (0.250)] X[3.600+ (0.250)] +[(20.125+ (0.250)] X [20.000+ (0.250)] X [3.000+(0.250)] + ([20.125+(0.250)] X [20.000+(0.250)] X [3.000+(0.250)] = 6636.56+1340.93+1340.93 = 9318.42 m 3 Total cost = 9318.42 m 3X RM250/M3 = RM 2329605
Floor area method (SUM ALL PART A, B, C AND D) =lXW = 2[28.125-(0.250)]X [30.125-(0.250)] + [(20.125-(0.250)] X [20.000-(0.250)] + [20.125-(0.250)]X [20.000-(0.250)] =1665.53+392.53+392.53 =2450.59 m 2 Total cost = 2450.59 m 2X RM 150/M 2 =RM 367588.5
5.2
BUILD UP RATE
Item
Rate
Worker salary (8 hours working/day)
RM 50.00/day
Soil excavation not exceeding 1.5m depth
1.50 hour/m 3
Soil excavation exceeding 1.50m but not exceeding 3.00m depth
1.60 hour/m 3
Spreading up soil in making up level (surface to receive pad footing)
0.12 hour/m 2
Filling in and ramming soil
0.60 hour/m 3
Carting away remainder load
1.20 hour/m3
Typical soil expansion Profit
25% 20%
1. Cost of excavation out Total depth of excavation
= 0.05 + 0.45 + 0.65 + 0.50 =1.65m
Volume of excavation (not exceed 1.50m): V
=lxwxd = 2.5 x 2.5 x 1.5 = 9.375m3
Volume of excavation (exceed 1.50m) V
=lxwxd = 2.5 x 2.5 x 0.15 = 0.938m3
Cost:
= 9.375m3 x 1.50 hour x (RM50.00/8 hour) + 0.938m 3 x 1.60 hour x (RM50.00/8 hour) = 87.89 + 9.38 = RM97.27
2. Cost spread up in making up level (surface to receive pad footing)
= (2.5m x 2.5m) x 0.12 hour x (RM50.00/8hour) = RM 04.70
3. Cost of filling and ramming Cost: = [10.313m 3 - (2.5m x 2.5m x 0.45m ) – (0.25m x 0.375m x 0.65m) – (1.06 x 0.15 x 0.5) x 2 x 0.60 hour x (RM50.00/8hour) = (10.313m 3 – 2.810m 3 – 0.061m 3 – 0.160m3) x 0.60 hour x RM6.25 = RM27.31
4. Cost of carting away remainder load
= [10.313m 3 – (7.282m3 x 1.25)] x 1.20 hour x RM6.25/hour = RM09.08
5. Profit
= 20% x [RM97.27 + RM04.70 + RM27.31 + RM09.08] / 10.313 = 20% x RM13.42 = RM02.68/m3
5.3 TIMES
TAKING-OFF
DIM
RESULT
DESCRIPTION
UNIT
QTY
W.B.L.F.F. Excvt. top soil length 5.375 Add fdn. spr. 2.500 0.450 2.050 7.425
7.43 7.43
55.20
[ Excvt. top soil for preservn. avg.
100
M2
55.20
M3
5.52
m3
13.05
m3
9.409
[ mm deep
7.43 7.43 0.10
9.00 14.50 0.10
[Dep. preserved top soil in temp. spoil heaps avg. 10.000 m dist. 5.52
13.05
Surc. excvn. Depth conc. bed Hardcore 0.150
0.125
0.275 Less top soil excvn.
0.100 0.175
7.23 7.23 0.18
9.409
[ Exvct. to red. lev. max. depth n.e. [& Rem. excvt. mat. from site.
250mm
pitexcvn. depth lean 0.05 ftg. 0.450 stump 0.650 1.15 Less excvn. top soil
0.100 red lev 0.175 0.275 1.425
6/
2.50 2.50 1.425
[ Excvt. pit to rec. col. bases startg. from red. lev. [ max. depth n.e. 1.00 m [ (In No. 6) [& [ Fillg. to excvn. w. mat. arising from excvn. 6 53.44
m3
53.44
m3
5.340
[ E.o pit excvn. for excvtg. in rock [ (Prov.) 10 100 6/
2.50 2.50 1.425
5.340
EXCAVATION W.B.LF.F TR.excvn Length 5.375 Less col. st. 2/0.450 0.490 4.4750 Depth 0.500 Add ln con 0.050 0.550 Less excvn Top soil 0.100 Red.lev 0.175
0.275 0.275
Excvt. Tr.to rec.grd. bm. Starting from red. Lev depth n.e 0.25m & Rem excvtd. Mat from site 6/
4.48 0.25 0.25
10 100/ 6
6/
4.48 0.25 0.25
2.5 2.5 0.45
1.68
m3
1.68
m3
0.168
M3
16.88
M3
14.06
E.otr.excvn.forexcvtg. In rock (prov) 0.168 BLINDING AND CONCRETE col.bases 16.88 (Conc. Gr 7 blinding n.e 10 mm thk. Laid on earth & rem. Excvtd. Mat from site& (ddt. Filg to excvn .w. mat. Arising from excvn.
6/
2.5 2.5
(reinfdinsituconc gr 30 in soil fdn bases in no 6 & rem excvtd mat from site &ddtfillg to excvn w. mat arising from excvn
0.45 6/
0.250 0.375 0.650
14.06 Reinfdinsituconc gr 30 in soil col stump M3 0.37
Red. Lev.
6/
0.25 0.375 0.38
W.B.L.F.F. Vol. of stump in pit Ht 0.650 Lessexcvn Top soil 0.100 0.175 0.275 0.375
(rem. Excvtd. Mat from site &ddtfillg to excvn .w. mat arising from excvn 0.214
2.25 0.65
m3
0.214
m2
8.78
Stump Gth 2.250
6/0.375 6/
0.370
8.78 Reinft bars in soil col stump Stump Length Fdn. 0.450 Stump 0.650 Lap In col. 0.450 1.55
Less Conc.cov 0.04 Fdn bars 2/0.012
0.0240.064 1.486
Add bend
0.250 1.736
6/4
1.74
41.76
(20 mm diah.t.steel reinft in strt& bent bars in iso. Col stump
m2
41.76
m
51.12
m3
0.34
(fwk to edges & faces of fdn exceeding 250 mm and n.e. 500 mm high
m
90.00
(fwk to edges & faces of fdn exceeding 250 mm and n.e. 500 mm high
m
53.76
Width con. cov.
Hooks
2/0.040 4/
Links gth. 0.375 less 0.080 0.295 =1.18
Add 24/0.010 0.24 1.42 W.B.L.F.F
6/ 6/
1.42
51.12
(8 mm diam.sreinf in links in soil . col. stump Blindg. To grd. Bm. Length 5.325
6/
4.48
Less 3 stump 3/0.300
0.25 0.05 10 100 2/
10.55 0.13 0.18
0.900 0.34
4.475
Conc gr blindgn.e. 100 mm thk laid on earth 0.50
Fwk to fdns& beds fdn 6/2.515.00
6/
6/2
15
4.48
90.00
53.76
Pad ftg
Length 2.500 LESS Conc. Cover b/s 2/0.0400 0.080 2.420 Add 2 bends
0.300
Less
m3 2 conc cov 0.080 2/0.295
0.590 6/
3.010 6
3.010
0.13
108.36 (mm dia h.t reinft in strt& bent bars in fdn Pad ftg
m
108.36
m
212.22
W.B.L.F.F. Grd beam Length 5.375 Lessconc.cov 2/0.0400.080 5.295 Add 2 bends 2/0.300 0.600 6/
5.895 6
5.895
212.22
(12 mm diaht steel reinft in strt& bent bars in fdn stirupss Grdbm Gth Width 01.50 Less Cov
2/0.040
Ht
0.080 0.070 0.500
Less
Cov
2/0.040
0.080 0.420 2/ 0.490 =0.980
Add Hooks
24/0.008 0.192 1.172
6/
8 mm diam.sreinft in stirups in fdn 28/
1.18
198.24
(grdbms
m
198.24
M2
23.77
M3
3.08
h/c &dpm Length /width 5.375 Less 2 stumps 0.600
2/0.300 4.875
4.875 4.875
W.B.L.F.F. 23.77 Fillg to make up levavg 150 mm thkw.h/c of clean hard broken stones obtained off site &polyetlene not less than 1000 gauge horizdpmlapdd 100 mm at jts laid on h/c
4.875 4.875 0.13
Conc gr 30 ln bed 100mm 150 thk laid on h/c 3.08
6.0
CONCLUSION
The conclusion from this project is that we are able to learn about contract and its relation to estimation of such project. This knowledge can be use in the future upon stepping into carrier environment. From this project, there three type of calculation that has been used which is preliminary that consist floor area method and volume method. Next is build up-rate and the last one is taking off method. All these three methods are very important in completing a project and will benefit to the developer both bef ore and after the project is done. Preliminary calculation is done to predict the overall cost of the project and cost for resources required before starting the project. This will help in forecasting the cost for the project upon completion. From the build-up rate calculation, we are able to determine the cost for excavation work, cost for filling and ramming the soil, cost to carting away remainder load and cost for spreading up soil in making up level. The last method is taking off where the calculation
is
done
to
produce
bill
of
quantity
for
such
project.
Analysis
of drawings and specifications allows the cost consultant to prepare a taking off list, which lists all of the individual elements that comprise the works. These elements can then be measured in number, length, area, volume, weight or time then collated and structured to produce an unpriced bill of quantities. Therefore all this method is very useful for civil engineering students as one of the compulsory knowledge that will be used in the future.
GROUP OF MEMBER PICTURE
FROM LEFT: 1). MUHHAMAD SHAFIQ BIN ABDUL JALIL (DF140072) 2). SAMI MARESH ABDO SAIF AL- SHARABI (AF140189) 3). JACKSMITH L’DRECKSSON CLAUDIUS (CF150117) 4). MU’IZZUDDIN BIN HERMAN (DF140001) 5). MUHAMAD HAZIQ B SAIPOLBAHRI (DF140034)
