Science and Mathematics for Engineering 6th Edition by John Bird

تمرين 16

Figure RT 5.5 shows a roof truss $\mathrm { PQR }$ with rafter $\mathrm { PQ } = 3 \mathrm {~m}$ Calculate the length of (a) the roof rise $\mathrm { PP } ^ { \prime }$ , (b) rafter $\mathrm { PR }$ , and (c) the roof span $\mathrm { QR }$ .
Find also (d) the cross-sectional area of the roof truss.
Figure RT5.5