A 6 hour storm has 6 cm of rainfall and the resulting runoff was 3 cm. If φ = index remains at the same value, which one of the following is the runoff due to 12 cm of rainfall in 9 hours in the catchment?
Which of the following pairs regarding the defects in timber are correctly matched ? 1. Upsets....due to overmaturity and unventilated star age of wood. 2. Fwciness....due to crushing of fibres running transversel. 3. Star shakes....radial splits widest at the circumference and diminishing towards the centre. 4. Heart shakes....cracks widest at the centre and diminishing towards the outer circumference. Select the correct answer using the codes given below.