Table of Contents
What is the maximum distance between expansion joints?
A practical limit between expansion joints for TFR is in the range of 100′ to 200′, when these roofs are attached to light gage cold- formed purlins. Standing seam roofs are limited by the range of the sliding clips. Depending on the manufacturer, it is in the range of 150′ to 200′.
What is the standard width of expansion joints?
2.3 Expansion joint shall cater for a horizontal movement of 25mm & vertical movement of 2mm. This shall be certified by the manufacturer/supplier of the joint. 2.4 The minimum width (in traffic direction) of the joint shall be 500mm and maximum width shall be 750mm.
How far apart should control joints be?
CONTROL JOINT SPACING Space joints (in feet) no more than 2-3 times the slab thickness (in inches). A 4″ slab should have joints 8-12 feet apart. When arranging joints, skilled contractors will often use them to create an attractive diamond pattern.
How do you calculate spacing between expansion joints?
As a general rule-of-thumb, joint spacing should be less than about 24 x slab thickness. Thus, a 230 mm slab (9 inches) should have joints spaced no more than about 5.5 m (18 ft.) apart.
How do you calculate expansion joint movement?
Design Procedure The maximum joint opening is equal to the minimum installation opening plus the movement due to temperature drop and shrinkage, therefore: 0.85W = 0.60W + (cos θ)(KMt + Ms), or W = 4(cos θ)(KMt + Ms) 2.
What is joint spacing?
Joints should be spaced about 10 feet and a maximum of 15 feet. When using joint groove for contraction joints, the joint should be a minimum depth of 1/4 thickness of the slab. Saw-cut joints should be done within four to 12 hours after the concrete has been finished.
What will be the spacing of expansion joint If width of joint is 2.5 cm?
Solution- width of expansion joint = 2.5cm. Now both sides slab starts expand so we have to take (2.5/2) width of expansion for a single slab length. Now expansion due to thermal. 1.25 = 10×10^-6xLx25.