G-2 ICI

Question 1

1. Design for formwork for concrete

Answer 1

safety
architectural design
type of concrete member being cast
efficiency
environmental conditions

Question 2

2. Tall architectural concrete wall

Answer 2

rate of placement will have to be moderate and the stud spacing close

Question 3

3. Sub-grade is important to what formwork.

Answer 3

slab-on-ground

Question 4

4. Increase formwork efficiency

Answer 4

Use modular panel sizes, uniform tie spacing, and prefabricated components.

Question 5

5. Required the strongest forms

Answer 5

Columns require the strongest forms because they are often tall and the concrete is placed all in one placement.

Question 6

6. Carry the load of fresh concrete + equipment

Answer 6

Falsework

Question 7

7. Temperature falls while placing concrete

Answer 7

Rate of placement should be reduced if temperature falls

Question 8

8. Formwork pressure -factors

Answer 8

Dependent on the rate of placement and the rate at which the concrete gains strength

Question 9

9. Concrete slump

Answer 9

The slump of the concrete is a measurement of the concrete’s consistency. Low slump concrete is stiff and had to work, high slump will be fluid and easy to place.

Question 10

10. Type of form to make/create a textured face

Answer 10

specialized formwork or

sandblasted and tooled concrete

Question 11

11. Architectural concrete designed with max deflection in formwork

Answer 11

1/400 Canadian max deflection 1/360 American standard

Question 12

12. BCBC Requirements on air temperature

Answer 12

mortar shall be used and placed in final position
a) within 1.5 h after mixing when the air temperature is 25°C or higher, or
b) within 2.5 h after mixing when the air temperature is less than 25°C.