Choosing the RIGHT Formwork System

1、1 bcn 3423 - timber/formwork design rinker school of building construction university of florida 2 chek lap kok airport (hong kong) 3 formwork: 50 - 70% petronas tower rebar: 15 - 25% concrete: 15 - 25% 4 labor: 50 - 70% material: 15 - 20% other: 10 - 15% 5 walls slabs columns 6 walls loose framing

2、prefabricated panels crane set gangs 7 8 prefab steel panel prefab alum. panel 9 are durable for many reuses simplify and reduce the labor required studs and sheathing are preassembled in units small enough to be handled panels are set into position and tied together wales, ties, and braces are then

3、 attached made of wood, metal, plywood with metal bracing, or glass fiber and plastic over wood 10 aluminum panel 11 12 ranging up to 30 x50 ft large panels can be assembled flat on the ground where it is easier to work stripping is easier (stripped as a unit) extra bracing is required to withstand

4、the handling stresses are frequently used as “climbing” forms in high wall construction small panels can be ganged together to form larger units 13 aluminum beam gang systems 14 steel panel gang systems 15 steel crane set gangs 16 shearwall roll back system 17 18 vertical slipforms are moved upward

5、by jacks can be used for structures such as silos, and for high rise elevator and stairway cores working decks and finishers scaffolds are attached to and carried up with the forms has shorter construction time appropriate for structures taller than 40 ft not efficient where there are many projectio

6、ns to the direction of slide 19 20 21 22 23 loose wood framing steel or aluminum shoring flying forms 24 25 26 27 28 29 30 forms wall and slab together 31 panelized system for garage beams and slabs 32 columns loose framing hand-set panels crane set gangs 33 hand-set steel panelhand-set aluminum pan

7、el 34 round fiberglass column forms 35 steel column forms 36 aluma beam column forms 37 38 39 nothing else withstanding, the choice is always. gang panels! 40 what you own availability initial price total cost 41 experience of workers what will produce the desired results with the least amount of cost? 42 number of uses desired finish site conditions 43 crane schedule building design 44 history with similar projects engineering expertise support services knowledge of support person