Construction Scheduling BOLIVIAN BRIDGE DESIGN CE 142 S pring 2009 Q - - PowerPoint PPT Presentation

▶
construction scheduling
SMART_READER_LITE
LIVE PREVIEW

Construction Scheduling BOLIVIAN BRIDGE DESIGN CE 142 S pring 2009 Q - - PowerPoint PPT Presentation

Aug 22, 2022 320 likes •528 views

O brajes b ridge tO M arket D uke u niversiTy P raTT s chool of e ngineering D eParTmenT of c ivil anD e nvironmenTal e ngineering c ivil e ngineering 142 s Pring 2009 D esign T eam : T homas B urklanD m aria g iBBs r ussell g lorioso T homas h

slide-1
SLIDE 1

Obrajes bridge tO Market

Design T

eam:

Thomas BurklanD maria giBBs russell glorioso Thomas haDzor

Duke universiTy PraTT school of engineering DeParTmenT of civil anD environmenTal engineering civil engineering 142 sPring 2009

slide-2
SLIDE 2

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

exisTing conDiTions

slide-3
SLIDE 3

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

siTe

Project Site

slide-4
SLIDE 4

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

Design alTernaTives

Floating Bridge

Utilizing the bouyant force of water, this bridge would respond to a fmooded river by simply rising on

  • it. Inspired by pontoon boats, and

potentially recycling oil drums, this bridge would be simple to maintain, if not to cross. Major concerns about durability, safety, and reliability shelved this untested concept.

slide-5
SLIDE 5

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

Design alTernaTives

Culvert Bridge

The culvert bridge is a standard rural design. It is durable, easily crossed, and relatively simple to construct. Large round pipes

  • culverts - allow water to fmow

through, leaving the bridge nearly untouched. Major drawbacks are the uncertainty

  • f

availability

  • f

appropriate culverts,

  • r

the manpower needed to construct such a bridge.

slide-6
SLIDE 6

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

Design alTernaTives

Hardened Roadway

The simplest option by far, the hardened roadway is little more than a slab on grade. It is easy to build and maintain and potentially extremely

  • durable. However, in times of fmooding,

this solution becomes impassable. In the times of high water that make this bridge project necessary, this

  • ption will be unusable. While it would

become passable faster than mud could dry, the signifjcant problem of fmooding makes this option less than

  • ptimal.
slide-7
SLIDE 7

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

Design Decision

We utilized a spreadsheet of values, scoring each bridge out

  • f ten for eight useful categories.

Our results indicated that the culvert design was the best

  • ption, so we moved forward

with a design for a culvert bridge.

slide-8
SLIDE 8

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

1 2 3 4 A B C D E F 10 x 20 10 x 20 10 x 20 10 x 20 10 x 20 10 x 20 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 14 x 25 12' - 0" 12' - 0" 12' - 0" 12' - 0" 1 2 3 4 A B C D E F 2' - 9" 1' - 8" 1' - 0" 5' - 0" 5' - 0" 20' - 0" 20' - 0" 20' - 0" 20' - 0" 20' - 0" 4' - 0" 4' - 0" 4' - 0" 1 2 3 4 A B C D E F 12' - 0" 1/4" = 1'-0" 1 03 - DECK 1/4" = 1'-0" 2 01 - FOUNDATION 1/4" = 1'-0" 3 02 - BANKS

Plans

slide-9
SLIDE 9

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

elevaTions

02 - BANKS 0' - 0" 03 - DECK 1' - 6" 01 - FOUNDATION
  • 7' - 0"

1 2 3 4

02 - BANKS 0' - 0" 03 - DECK 1' - 6" 01 - FOUNDATION
  • 7' - 0"

1 2 3 4

02 - BANKS 0' - 0" 03 - DECK 1' - 6" 01 - FOUNDATION
  • 7' - 0"

A B C D E F

THIS AREA TO BE FILLED IN WITH SOIL THIS AREA TO BE FILLED IN WITH SOIL 02 - BANKS 0' - 0" 03 - DECK 1' - 6" 01 - FOUNDATION
  • 7' - 0"

A B C D E F

THIS AREA TO BE FILLED IN WITH SOIL THIS AREA TO BE FILLED IN WITH SOIL 1/4" = 1'-0" 1 EAST ELEVATION 1/4" = 1'-0" 2 WEST ELEVATION 1/4" = 1'-0" 3 NORTH ELEVATION 1/4" = 1'-0" 4 SOUTH ELEVATION
slide-10
SLIDE 10

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

connecTions

5 #4 BARS @ 14" O.C. 4 #8 BARS #3 TIES @ 1'-0" O.C. 1 '
  • 8
" 0' - 10" 1 '
  • "
1 '
  • "
1 '
  • "
0' - 2" 0' - 2" #3 TIES @ 1'-0" O.C. 4 #8 BARS 2 LONGITUDINAL #8 BARS 3" = 1'-0" 2 02 - COLUMN INTO FOOTING 3" = 1'-0" 1 01 - COLUMN INTO PRIMARY BEAM
slide-11
SLIDE 11

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

reBar Plan

1 '
  • 2
" 1 '
  • 2
" 2 LONGITUDINAL #8 BARS IN PRIMARY BEAM COLUMN BARS BEND AND EXTEND ALONG PRIMARY BEAM 2 #8 BARS EXTEND INTO BOTH SECONDARY AND PRIMARY BEAMS THE DEVELOPEMENT LENGTH '
  • 2
1 / 2 " '
  • 2
1 / 2 " '
  • 1
5 / 8 " 4 LONGITUDINAL #8 BARS IN EACH SECONDARY BEAM 1 '
  • "
1 '
  • "
0' - 3 1/2" 0' - 3 1/2" 2 '
  • 9
" 3" = 1'-0" 1 03 - REBAR PLAN VIEW
slide-12
SLIDE 12

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

DeTails

02 - BANKS 0' - 0" 03 - DECK 1' - 6" 01 - FOUNDATION
  • 7' - 0"

A

0' - 3" 2' - 9" 1' - 8" 7' - 0" 1' - 0" 1' - 0" 2 #8 BARS 2 #8 BARS 3" = 1'-0" 1 04 - PRIMARY AND SECONDARY BEAMS 3/4" = 1'-0" 2 05 - RETAINING WALL
slide-13
SLIDE 13

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

PracTical consiDeraTions

courTesy of WooDy kloesel, Pe Optimal water/cement ratio ≤ 0.55 Reinforcing steel: Fy = 40 ksi Concrete: fc’ = 2500 psi (EWB recommended for site-mixed) Allowable soil bearing pressure: 2000 psf Suggested Rho value: ρ= 0.0045

slide-14
SLIDE 14

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

final Design

Deck

0.6C24 Deck 2.5” Deep WWF= 6x6 W2.1 x W2.1 (As=0.042)

Primary Beam

10 x 20 with 2-#8 bars Tops each of the four sets of columns and the retaining wall.

Secondary Beam

14 x 25 with 4-#8 bars Runs with the fmow of traffjc, @ 4’ O.C.

Column

10 x 12 reinforced concrete 4 #8 bars with #3 ties @ 1’-0” O.C.

Spread Footing

60 x 60 x 8 5 #4 bars @ 1’-2” O.C. in each direction Major materials used

Concrete: 1846 ft3 Metal Decking: 1200 ft2 WWF: 12 csf #3 bars: 140 ft #4 bars: 400 ft #8 bars: 2259 ft

slide-15
SLIDE 15

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

concreTe mix Design

Goals: water/cement ratio ≤ 0.55 concrete fc’ ≥ 2500 psi Concrete Mix: Water: 0.5 lb/ft3 Cement: 25.38 lb/ft3 Coarse Aggregate: 73.89 lb/ft3 Fine Aggregate: 48.9 lb/ft3

slide-16
SLIDE 16

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

form Design

NOTE: Each design is for one of the objects it specifjes

Footing: 4 - 1” x 8” timbers; two cut at 5’-2”, two cut at 5’-0” Column: 4 - 1” x 12” timbers; cut at 6’-5” Primary Beam: 5 - 1/2” plywood; one cut to 12’-0” x 11”, two cut to 11’-11” x 20”, two cut to 11” x 20” Secondary Beam: 5 - 1/2” plywood; one cut to 12’-0” x 15”, two cut to 1’-3” x 2’-1”, two cut to 19’-11” x 2’-1” Ramp: 4 - 1” x 4” timbers; two cut to 12’-0”, two cut to 12’-2” Retaining Wall Slab: 4 - 1” x 12” timbers; two cut to 5’-5”; two cut to 12’-2” Retaining Wall: 4 - 1/2” plywood; two cut to 6’-5” x 1’-2”, two cut to 6’-5” x 12’-0”

slide-17
SLIDE 17

BOLIVIAN BRIDGE DESIGN CE 142 S

PRING 2009

C OS T E S TIMATION

Materials List 1 U.S. dollar = 7.02000702 Bolivian bolivianos Item Amount per Element Units Multiply by 1.25 Convert to m# of 12m bars # of Elements Cost(BOB) Units Cost (USD) Cost Spread Footing 8 concrete 16.7 cf rebar (8 #4 bars)12.7mm 400 ft 500 152.4 13 135.71 per 12 m bar $19.34 Column 8 concrete rebar (6 #3 bars)9.525mm 140 ft 173.6 52.91328 5 85.26 per 12m bar $12.15 Primary Beam 6 concrete rebar (2 #8 bars) 2259 ft 2823.75 860.679 72 604.55 per 12m bar $86.14 Secondary Beam 20 concrete rebar (4 #8 bars)28.65mm 0 ft 604.55 per 12m bar $86.14 Retaining Wall 2 concrete rebar (2 #8 bars) 1 ft 1.25 0.381 1 604.55 per 12m bar $86.14 $172.28 Welded Wire Fabric 12 csf Deck concrete metal decking 1200 sf 1 15.94 sf $2.27 anchor bolts Form Work plywood $1,000 lumber (i.e. 2 x 4) $1,000 nails (clavos) 1000 18/kg(.35/nail) $0.05 $50.00 Total # 8 re-bar 2259 ft 2823.75 860.679 72 604.55 per 12m bar $86.14 $6,202.08 #4 re-bar 400 ft 500 152.4 13 135.71 per 12m bar $19.34 $251.42 # 3 re-bar 140 ft 175 53.34 5 8.26 per 12m bar $12.15 $60.75 Concrete 1846 ft $8,452 Metal Decking 1200 sf 15.94 sf $2.27 $2,724.00 Welded Wire Fabric 12 csf 15.16 csf $2.16 $25.92 Concrete 1846 cf Portland Cement 23.33 lb/cf Coarse Aggregate(Gravel) 73.89 lb/cf Fine Aggregate (Sand) 48.9 lb/cf Water Welded Wire Mesh 347.49/cfs $49.50

  • Misc. Materials

Trowels(paleta, badilejo) 5 18 $2.56 $12.80 Shovels(pala) 10 85 $12.11 $121.10 Wheelbarrows 5 600 $85.49 $427.45 Concrete Mixer 2 $1,000 $1,000 Stakes 200 1.75 $0.25 $50.00 Tape Measures 5 28 $4.00 $20.00 Levels (nivel) 5 17 $2.42 $12.10 Spray Paint 20 35 $5 $100 Surveying Equipment *brought from Duke $0 $0 Helmets(cascos) 20 30 $0.27 $5.40 Gloves(guantes de cuero) 20 20 $2.85 $57.00 Breathing Masks 10 10 $1.42 $14.20 Safety Glasses(gafas) 10 15 $2.14 $21.40 Wood Saws 10 40 $5.70 $57.00 Hammars (martillo) 10 45 $6.41 $64.10 Total Cost $21,728.72 English Spanish rebar Acero Corrugado

slide-18
SLIDE 18

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

Construction Scheduling

slide-19
SLIDE 19

BOLIVIAN BRIDGE DESIGN CE 142 Spring 2009

QuesTions?