Application: ‘D2C-type’ Powered Davit CarriagesSite: Los Angeles Convention Center

1201 South Figueroa StreetLos Angeles, CA - ref.: 9636

Customer: George Hyman Construction Company

Equipment: 4 - ‘D2C-type’ Powered Davit Carriages

Technical Data:

Maximum suspension height : South Lobby Tower units - 131’-6” (40 m) West Lobby Tower units - 91’-6” (28 m)

Load capacity: 500 lbs (225 kg)Lifting speed: 20 ft./min. (6m/min.)Traversing system: AC powered drive motorOperators required: 2 per unit

Track type: dual WF steel (supplied & installed by

others)

productinformation

access references

POWERED DAVIT CARRIAGES

ref.: M 4765rev. no.:date: 10/98page: 1/1

Description of the application:

During the L.A.. Convention Center’s expansion from 1993to 1994, Tractel supplied a variety of access solutions forthis nearly completely glazed complex.

Access to the entire exterior of two towers was required.

Powered Davit Carriages were supplied for the upper &lower levels of both the South and West Lobby Tower.

The four D2C units support two TRACMOD poweredplatforms used to service each tower.

Other systems supplied on the L.A. Convention Center:

TRACMOD Powered Platforms, TRACMOD single userplatform, Davits & Bases, Safety tieback anchors, Rollingladder (powered vertically), Rolling Ladder (rolling beam),Monorail (interior), Transfer trolleys, Intermittent tie-ins.‘D2C-type’ Powered Davit Carriage

Primary & secondarysuspension lines connect

to powered platfrom

Rotatingbooms forplatform

launching

Poweredtraversing

Line of WFtrack

.

productinformation

ref.: M 4768rev. no.:date: 03/99page: 1/1

Standard D2C ref. “A” below Standard D2C ref. “B” below

Tractel provided many different access systems for thisproject, including davit bases, TRACMOD modularpowered platforms, rolling gantries and tieback anchors, aswell as the davit carriages described here.

“A”

“A”

“B”

“B”

“A”

“A”

“B”

“B”

Ronald Reagan State Office Building:Schematic Roof Plan showing Davit Carriages and Track

Application: D2C Model Davit Carriages

Site: Ronald Reagan State Office Building,

300 South Spring Street, Los Angeles, CA ref.: 9956

Customer: The Clark Construction Group, Inc.

Equipment: 4 - D2C Davit Carriages 16’-6” (5.0m) ht. 4 - Special D2C Davit Carriages 19’-3” (9.1m) ht.

Associated Equipment: 600 ft. (185m) – dual pipe track 8 – 26 ft. (8m) lg. TRACMOD powered platforms

Description of the application:

The Ronald Reagan State Office Building, located in downtownL.A., is owned by the Los Angeles State Building Authority anddesigned by Architect Richard Faulkner.

This application required taller davit masts to overcome veryhigh parapets at the roof level. Both the standard D2C DavitCarriages and the special D2C units allow the Davit Arms tobe lowered out-of-view.

Technical Data:Maximum suspension height : 205’ (62 m)

Load capacity: 1150 lbs (525 kg)Lifting speed: 20 ft./min. (6m/min.)Traversing system: AC powered drive motorOperators required: 2 per unitBoom reach: 8’6” (2.59 m) all unitsWeight (per D2C): std. unit “A”: 3550 lb (1600 kg)

special unit “B”: 4500 lb (2050 kg) Track type: 6” diameter aluminum dual

pipe track

Davit Arm

AccessLadder

Riggingplatform

TRACMOD modularpowered platform

Dual PipeTrack

D2C DavitCarriage

N

access references

DAVIT CARRIAGES

productinformation

access references

BMU Track

ref.: M 4769rev. no.: 1date: 01/01page: 1/3

Application: BMU Track

Site: San Francisco Int’l Airport, Area “A”.San Jose, CA – ref. 9923

Customer: Hensel Phelps Construction Co.

Equipment: 4400’ (1350 m) dual-pipe track

Technical Data:

Track type: Galvanized steel tube,Dual-pipe

Track size: 8” (400 mm) nominal diameter

Gauge: 4’ 3-3/8” (1.305 m)

Track support height.: 4’-10” (1,475 m) nominal

Track support spacing.: 13’-0” (3,960 m) typical

Description of the application:

The access systems for the expansion of the San FranciscoInternational Airport were carried out under three differentcontracts with two different General Contractors.

Powered Davit Carriages were used throughout the airport,with different types of track to suit these BuildingMaintenance Units (BMU).

The Project Architect for area ‘A’ was Gerson Overstreet,who elected to use dual-pipe track for this area.

BMU Track

Track Support

BMU Track

Tractel provided many different access systems for thisproject, including permanent davit bases with portable davitarms, TRACMOD modular powered platforms, tiebackanchors and TRAVSAFE horizontal lifelines as well as theD2C powered rolling davit carriages for use with the BMUtrack described here..

San Francisco International Airport

BMU Track

Boarding Area ‘A”

Internationalbuilding

Boarding Area “G:”BMU Track

productinformation

ref: M4769rev. no.:date: 01/01page: 2/3

Application: 2 D2C type Powered Davits andBMU Track

Site: San Francisco Int’l Airport,Boarding Area “G”.San Jose, CA – ref. 9906

Customer: Tutor-Saliba Corporation

Equipment: 2 D2C-type Powered Davit Carriages1 Power Stage1 Single-man Power Stage5020’ (1530 m) Dual-pipe Track

Technical Data:

D2C window washing units c/w- four wheel assemblies per cart- one davit arm per cart

31’-7” Sectional Power Stage c/w- two power ends with Tirak hoists- three 6’-6” length center sections- one 3’-6” length center sections- one 1’-11” length center sections

3’-6” Dual-line Single-man Power Stage c/w- Tirak hoists with primary and secondary suspension

Track type: Galvanized steel tube, Dual-pipeTrack size: 8” (400 mm) nominal diameterGauge: 4’ 3-3/8” (1.305 m)Track support height.: 3’ to 3’-6” (.92 to 1.1m)Track support spacing.: 13’-0” (3,960 m) typical

Description of Application:To provide access to the new Terminal “G” building Tutor-SalibaCorporation decided to use 2 D2C on 2 parallel tracks runningthe length of the building. With the two permanent davit basesproviding access at the end of the building.

access referencesPowered Davit System/BMU Track

productinformation

ref: M4769rev. no.:date: 01/01page: 3/3

Application: 4 D1C type Powered Davit andBMU Track

Site: San Francisco Int’l Airport,International TerminalSan Jose, CA – ref. 9916

Customer: Tutor-Saliba Corporation & Perini Corporationand Buckley & Company Inc. - a joint venture

Equipment: 4 D1C-type Davit Carriage Assemblies1 Power Stage1 Single-man Power Stage

Technical Data:

D1C window washing units- two with 9’-6” reach- two with 6’-6” reach c/w- 4 electrical power drives- 4 dual-line suspension trolleys

23’-8” Sectional Power Stage 125’ service heightc/w- two 3’-0” power ends with Tirak hoists with dual suspension (4-line stage)- one 9’-10” length center sections- one 3’-6” length center sections- two 1’-11” length center sections- two 2 3/4” removable ends (for the single man cage)

3’-6” Dual-line Single-man Power Stage c/w- Tirak hoists with primary and secondary suspension

Description of Application:To provide access to the new International Terminal at the SanFrancisco International Airport, Tratcel provided four D1C and a23’-8” powered platform to provide coverage to the easilyaccessible areas. While extra heavy duty and heavy duty DavitBases and Davit Arms were required for areas of the buildingwhere the D1C could not gain access. This project also called for3050’ (1066m) of travsafe, 98 Davit bases, 14 Davit Arms, DropThrough Sleeves, 20’ (6M) Aluminum Section Ladder and 3 GenieLifts.

access referencesPowered Davit System/Davits

International Building3rd. floor

International Building6th. floor

International Building6th. floor

productinformation

access references

POWERED DAVIT CARRIAGES

ref.: M 4777rev. no.:date: 06/99page: 1/1

Description of the application:

This ‘D2C’-type davit carriage system, located on the sixth floorsetback, was supplied to replace an existing unit that was nolonger operational. Swingstage Division had previously supplieda D2C unit to retrofit an upper unit.

All WF track was existing on site.

Application: ‘D2C-type’ Powered Davit Carriage

Site: 345 Park Avenue, New York, New York – ref 9994

Customer: R & R Scaffolding Ltd.

Equipment: 1 - ‘D2C-type’ Powered Davit Carriage 1 – 30’-0” (9m) TRACMOD Powered Platform

Technical Data: Suspension height : 150 ft. (m) Load capacity: 500 lbs (225 kg)

Lifting speed: 25 ft./min. (6m/min.) Traversing system: 208v, 3 ph, AC motor

Operators required: 2 Track type: dual WF steel

access referenceD2C - Davit Carriage

product information

ref.: M4796rev. no.: 0date: 04/04page: 1/1

© 2004 Tractel. All rights reserved.

Application: D2C - Powered Davit Carriage

Site: Edith Green Wendal Wyatt FederalBuildingPortland, OR - ref. 8325

Contractor: Skyward Construction

Equipment: 1 -D2C Powered Davit Carriage1 - 40’ Modular Stage Platform1160’ Wide Flange Track

Technical Data:

D2C Powered Powered Davit Carriage:consists of a pair of powered traversing davitcarriages, each with a davit mast and manuallyrotating davit boom reaching 7’-6”. The D2C tra-verse to the required drop locations via electricalmotors operated at the roof level with a pendentcontrol. Davit carriages suspend TracmodPowered Platforms that typically range from 20’- 30’. The platform on this building was a specialcase being 40’ with a weight limitation of 500lbs.

40’ Modular Powered Platform c/w- 2 - 2 Dual suspension Tirak Hoists- 2 - 3M End sections with end panels- 3 - 2M Center sections- 2 Vertical tie-in guide assemblies

Description of the application:Edith Green Wendal Wyatt Federal Building requiredaccess to the exterior of the building for window washingand future building maintenance. The D2C solution wasbecause of the quick access it can provide and toreduce the labor intensive operations of moving portabledavits from location to location.

access reference

D2C and Powered Platformproduct

information

ref.: M4816

rev. no.: 0

date: 02/09

page: 1/1

© 2009�Tractel®� All�rights�reserved.

Application: D2C

Site: Whilshire Federal building

11000 Wilshire Blvd.

Los Angeles, CA - ref. 8401

Customer: West Coast General

Equipment: D2C and Powered Platform