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.