ANSWER The sequence is as follows: (i) The brick joints should be raked out to form a key for the…
ANSWER: (i) Reduction in the cost of pumping/evacuation (ii) Reduction in the cost of sewage treatment
ANSWER: (i) A manhole is an inspection chamber exceeding 900mm in depth. There are iron steps or ladder built in…
ANSWER: Tabular scaffolding is preferred because (i) It is lighter in weight. (ii) It is easier to erect and dismantle.…
ANSWER: Gypsum in cement helps to retard the setting time of cement, thus allowing the work for which the cement…
ANSWER (i) Rapid Hardening Portland Cement: This is made by mixing together chalk or limestone, with clay or shale, heating…
ANSWER Advantages of flexible joints over rigid joints include: (i) Flexible joints produce the economy of expansion but rigid joints…
ANSWER Advantages of pitch fibre pipes include: (i) They are used for both domestic and trade wastes. (ii) They are…
(i) Monolithic method. (ii) Separate ANSWER (i) Monolithic method:- This involves laying the screed within three hours of cast-in-situ concrete…
ANSWER Precautions to be taken before laying screed to an old concrete floor. (i) Clean off the surface of the…