Page 49 - Building Regulation and Design Guidelines - Structural (Grey Code)

SECTION: 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS) SECTION: 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS)

P
P T = sin0 cos
Y
0 P
P H =
yc tan0
Z
c.g.

P T T P (a) Four Points With Two Cranes
Y
P V P V
e
y t y c
y X
c.g. b
M x = P H y c
P yc
M x =
tan0
M z = P e
v
P e
M z =
tan0
Fig. (3.14c) Moment caused by eccentric lifting
(b) Eight Points with two Cranes
and Two Spreader Beams
Fig. (3.14e) Hook lifting
Spreader
Beam

Rolling
c.g.
Block
Force Equal
Equal Equal on All Lines

All Reactions a) Four points with Spreader Beam b) Eight Points with Spreader Beam
Equal
R R R R
Fig. (3.14f) Use of spreader beam
Fig. (3.14d) Arrangement for equalizing lifting loads

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