【Weekly Topic】【Civil Engineering Version 20170615】
Thread Content
Participation reward: 2 Wealth. Correct reward: 6 wealth. Regarding the technical requirements for the installation of roof waterproofing membranes, which statement is correct? ( ) a When the roof slope is less than 3%, the roofing membrane should be laid parallel to the ridge.b When the roof slope is greater than 15%, the asphalt waterproof membrane should be laid perpendicular to the ridge.
c When the substrate undergoes significant deformation, the loose-laying method, spot-adhesion method, strip-adhesion method, or mechanical fixing method should be preferred.
d When constructing the roof membrane waterproofing layer, work should proceed from the highest point on the roof downward.
e The joints perpendicular to the ridge should be aligned with the direction of the wind with the highest frequency throughout the year. 【Answer】abce
Regarding the technical requirements for the installation of roof waterproofing membranes, the correct statements are (ABCE). a When the roof slope is less than 3%, the roofing membrane should be laid parallel to the ridge.
b When the roof slope is greater than 15%, the asphalt waterproof membrane should be laid perpendicular to the ridge.
c When the substrate experiences significant deformation, the air-laying method, spot-adhesion method, strip-adhesion method, or mechanical fixing method should be preferred.
d When constructing the roof membrane waterproofing layer, work should proceed from the highest point on the roof downward.
e The joints perpendicular to the ridge should be aligned with the direction of the wind with the highest frequency during the year
b When the roof slope is greater than 15%, the asphalt waterproof membrane should be laid perpendicular to the ridge.
c When the substrate experiences significant deformation, the air-laying method, spot-adhesion method, strip-adhesion method, or mechanical fixing method should be preferred.
d When constructing the roof membrane waterproofing layer, work should proceed from the highest point on the roof downward.
e The joints perpendicular to the ridge should be aligned with the direction of the wind with the highest frequency during the year
Regarding the technical requirements for the installation of roof waterproofing membranes, the correct statements are (ABCE). a When the roof slope is less than 3%, the roofing membrane should be laid parallel to the ridge.
b When the roof slope is greater than 15%, the asphalt waterproof membrane should be laid perpendicular to the ridge.
c When the substrate experiences significant deformation, the air-laying method, spot-adhesion method, strip-adhesion method, or mechanical fixing method should be preferred.
d When constructing the roof membrane waterproofing layer, work should proceed from the highest point on the roof downward.
e The joints perpendicular to the ridge should be aligned with the direction of the wind with the highest frequency during the year
b When the roof slope is greater than 15%, the asphalt waterproof membrane should be laid perpendicular to the ridge.
c When the substrate experiences significant deformation, the air-laying method, spot-adhesion method, strip-adhesion method, or mechanical fixing method should be preferred.
d When constructing the roof membrane waterproofing layer, work should proceed from the highest point on the roof downward.
e The joints perpendicular to the ridge should be aligned with the direction of the wind with the highest frequency during the year