For preparing a design calculation for the curtain wall system
of the facade of a building,...
For preparing a design calculation for the curtain wall system
of the facade of a building, what is the sequence or step for whole
design calculation? How many elements should be included to be
calculated.
Design an HVAC system for an office building. All of the offices
should be maintained at 72°F.
Model a corner office, 6m by 6m and 2m high. Make the exterior
walls glass and the interior walls are drywall at the ambient
temperature. Model a cold winter day as -5°C with a 10 m/s wind and
a hot summer day at 40°C with a 4 m/s wind. Model a person as a
37°C vertical cylinder with 1 m2 surface area 170...
Design a wall footing to support a 30cm − wide reinforced
concrete wall with a dead load DL =293 KN/m and a live load
LL = 218 KN/m. The bottom of the footing is to be 1. 2m below
the
final grade, the soil weighs 16 KN m3 ⁄ , the allowable soil
pressure, qa = 192 KN m2 ⁄ , and there is no appreciable
sulfur
content in the soil. fy = 420MPa and fc′ = 21MPa, normal-
weight...
Design an elevator control system for an 8 floors building, draw
the logic diagram, and illustrate the system with the following
situations:
1. The car is on the ground floor, John Doe wants to go from
ground floor to 7th floor;
2. The car is on 8th floor, John Doe wants to go from 6th floor
to the ground floor;
3. The car is moving up from 4th floor to 7th floor, John Doe
wants to go from 6th floor...
Example of Mix design proportion calculation
• You need to design the mix proportion of a grade 40 for a column
with workability of 50
mm slump and w/c not more than 0.55. The maximum size of gravel
aggregate is 10 mm
and the fine aggregate is quarry blast sand. The moisture content
of the aggregate is as
follow:
• The gravel aggregate is in moist condition with moisture content
of =3.5%, dry density
= 1700 kg/m3
• The sand...
A wall in a building has a width of 15 m and a height of 3 m. It
is made of several layers — a layer of motionless air with an R
value of 0.12 K m^2 / W, a 12.4 mm thick layer of
gypsum board with a thermal conductivity of 0.17 W/m K, a layer of
brick with an R value of 1.7 m^2/ W, and another layer of
motionless air with an R value of 0.12 K...
Chris has a custom curtain and chair
cover shop. The job-costing system was designed using an
activity-based approach. There are two direct-cost categories
(direct materials and direct labor) and three indirect cost pools.
These three cost pools represent three activity areas of work at
the shop.
Activity Area
Cost Driver Used for Allocation
Cost-Allocation Rate
Materials handling
Number of pieces in the pattern
$2.00 per piece
Stitching
Number of pieces in the pattern
$25.00 per piece
Assambly/Installation
Direct labor hours...
Chris has a custom curtain and chair cover shop. The job-costing
system was designed using an activity-based approach. There are two
direct-cost categories (direct materials and direct labor) and
three indirect cost pools. These three cost pools represent three
activity areas of work at the shop.
Activity Area Cost Driver Used for
Allocation Cost-Allocation Rate
Materials handling Number of pieces in the pattern $2.00 per
piece
Stitching Number of pieces in the pattern $25.00 per piece
Assembly/Installation Direct labor hours...
Do a quick calculation of the thermal conductance (U value)
across a cavity wall consisting of:
1. Outer skin 110mm brickwork (South facing, exposed aspect)
2. 30mm cavity
3. Inner skin of 10mm plasterboard
(Hint: R value and U-values are required)