ABSTRACT
After completing this chapter the student should be able to:
State the function and requirements of a centre.
Sketch and explain the construction of the various types of centre described.
Sketch and describe methods of supporting, striking and easing a centre.
Set out the outlines of semi-circular, gothic and segmental arch centres.
Calculate the radius of a segmental centre.
State the main requirements of concrete form work.
Design and draw forms for simple pre-cast concrete units.
Sketch details of in situ forms for simple slabs, lintels and beams.