Viewing page 24 of 77

This transcription has been completed. Contact us with corrections.

[[on reverse of previous page]]

4070
3730

[[image - drawing of cut-away view of double-walled pipe, with up and down arrows]]

[[image - drawing of cut-away view of pipe bottom, with interior wire basket]]

[[image - drawing of two concentric circles, with inner diameter marked as ' 3 1/2 ']]

[[image - drawing of cut-away view of pipe bottom, as above, but without basket, and surrounded by checkmark-type indications of surrounding soil]]

[[image - drawing of four long vertical parallel lines, with arrown points on bottom of left-most and right-most lines]]

[[long division for 11.00 รท 16:]]
        .69
    ________
 16 ) 11.00
       96
      ---
       140
       144
[[/long division]]